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Prof. Dinh Hoa Nguyen
he is an Assistant Professor in the International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) and Institute of Mathematics for Industry (IMI), Kyushu University, Japan

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Research Keywords & Expertise

0 Multi-agent Systems
0 iterative learning control
0 cooperative control
0 Robust and Optimal Control
0 Smart grid and energy systems

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Multi-agent Systems
iterative learning control
cooperative control
Smart grid and energy systems
Distributed optimization and control

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Short Biography

Dinh Hoa Nguyen received a Ph.D. degree from The University of Tokyo in 2014. Currently, he is an Assistant Professor at Kyushu University, Japan. His research is interdisciplinary encompassing energy systems, control systems, and optimization. His recent research interests include integration of renewable and distributed energy resources, smart grid, consumer-centric energy systems and markets, grid resiliency and security, artificial intelligence, distributed optimization, multi-agent system.

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Journal article
Published: 26 July 2021 in Sustainability
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The occupancy of residential energy consumers is an important subject to be studied to account for the changes on the load curve shape caused by paradigm shifts to consumer-centric energy markets or by significant energy demand variations due to pandemics, such as COVID-19. For non-intrusive occupancy analysis, multiple types of sensors can be installed to collect data based on which the consumer occupancy can be learned. However, the overall system cost will be increased as a result. Therefore, this research proposes a cheap and lightweight machine learning approach to predict the energy consumer occupancy based solely on their electricity consumption data. The proposed approach employs a support vector machine (SVM), in which different kernels are used and compared, including positive semi-definite and conditionally positive definite kernels. Efficiency of the proposed approach is depicted by different performance indexes calculated on simulation results with a realistic, publicly available dataset. Among SVM models with different kernels, those with Gaussian (rbf) and sigmoid kernels have the highest performance indexes, hence they may be most suitable to be used for residential energy consumer occupancy prediction.

ACS Style

Dinh Nguyen. Residential Energy Consumer Occupancy Prediction Based on Support Vector Machine. Sustainability 2021, 13, 8321 .

AMA Style

Dinh Nguyen. Residential Energy Consumer Occupancy Prediction Based on Support Vector Machine. Sustainability. 2021; 13 (15):8321.

Chicago/Turabian Style

Dinh Nguyen. 2021. "Residential Energy Consumer Occupancy Prediction Based on Support Vector Machine." Sustainability 13, no. 15: 8321.

Journal article
Published: 01 March 2021 in IEEE Transactions on Power Systems
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ACS Style

Dinh Hoa Nguyen. Optimal Solution Analysis and Decentralized Mechanisms for Peer-to-Peer Energy Markets. IEEE Transactions on Power Systems 2021, 36, 1470 -1481.

AMA Style

Dinh Hoa Nguyen. Optimal Solution Analysis and Decentralized Mechanisms for Peer-to-Peer Energy Markets. IEEE Transactions on Power Systems. 2021; 36 (2):1470-1481.

Chicago/Turabian Style

Dinh Hoa Nguyen. 2021. "Optimal Solution Analysis and Decentralized Mechanisms for Peer-to-Peer Energy Markets." IEEE Transactions on Power Systems 36, no. 2: 1470-1481.

Journal article
Published: 13 November 2020 in IET Electrical Systems in Transportation
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This research undertakes an investigation of global fuel cell vehicle (FCV) deployment, cognizant of optimal economic deployment and stakeholder preferences in a case study of Japan out to the year 2050. The model is mathematically formulated as a large-scale linear optimization problem, aiming to minimize system costs, including generation type, fuel, conversion, and carbon reduction, subject to the constraint of carbon dioxide reduction targets. Results show that between ∼0.8 and 2% of global energy consumption needs can be met by hydrogen by 2050, with city gas and transport emerging as significant use cases. Passenger FCVs and hydrogen buses account for most of the hydrogen-based transportation sector, leading to a global deployment of ∼120 million FCVs by 2050. Hydrogen production is reliant on fossil fuels, and OECD nations are net importers – especially Japan. To underpin hydrogen production from fossil fuels, carbon capture and storage is required in significant quantities when anticipating a large fleet of FCVs. Stakeholder engagement suggests optimism toward FCV deployment while policy issues identified include the necessity for large-scale future energy system investment and rapid technical and economic feasibility progress for renewables and electrolysers to achieve a hydrogen economy which is not reliant on fossil fuels.

ACS Style

Andrew Chapman; Dinh Hoa Nguyen; Hadi Farabi‐Asl; Kenshi Itaoka; Katsuhiko Hirose; Yasumasa Fujii. Hydrogen penetration and fuel cell vehicle deployment in the carbon constrained future energy system. IET Electrical Systems in Transportation 2020, 10, 409 -416.

AMA Style

Andrew Chapman, Dinh Hoa Nguyen, Hadi Farabi‐Asl, Kenshi Itaoka, Katsuhiko Hirose, Yasumasa Fujii. Hydrogen penetration and fuel cell vehicle deployment in the carbon constrained future energy system. IET Electrical Systems in Transportation. 2020; 10 (4):409-416.

Chicago/Turabian Style

Andrew Chapman; Dinh Hoa Nguyen; Hadi Farabi‐Asl; Kenshi Itaoka; Katsuhiko Hirose; Yasumasa Fujii. 2020. "Hydrogen penetration and fuel cell vehicle deployment in the carbon constrained future energy system." IET Electrical Systems in Transportation 10, no. 4: 409-416.

Journal article
Published: 30 September 2020 in IEEE Access
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This paper investigates the problem of bidirectional energy exchange between electric vehicles (EVs) and road lanes embedded with wireless power transfer technologies called wireless charging-discharging lanes (WCDLs). As such, EVs could provide better services to the grid, especially for balancing the energy supply-demand, while bringing convenience for EV users, because no cables and EV stops are needed. To enable this EV–WCDL energy exchange, a novel decentralized peer-to-peer (P2P) trading mechanism is proposed, in which EVs directly negotiate with a WCDL to reach consensus on the energy price and amounts to be traded. Those energy price and amounts are solutions of an optimization problem aiming at optimizing private cost functions of EVs and WCDL. The negotiation process between EVs and WCDL is secured by a privacy-preserving consensus protocol. Further, to assure successful trading with desired energy price and amounts, an analytical and systematic method is proposed to select cost function parameters by EVs and WCDL in a decentralized manner. Simulations are then carried out to validate the developed theoretical results, which confirm the effectiveness and scalability of the proposed algorithm.

ACS Style

Dinh Hoa Nguyen. Electric Vehicle – Wireless Charging-Discharging Lane Decentralized Peer-to-Peer Energy Trading. IEEE Access 2020, 8, 179616 -179625.

AMA Style

Dinh Hoa Nguyen. Electric Vehicle – Wireless Charging-Discharging Lane Decentralized Peer-to-Peer Energy Trading. IEEE Access. 2020; 8 (99):179616-179625.

Chicago/Turabian Style

Dinh Hoa Nguyen. 2020. "Electric Vehicle – Wireless Charging-Discharging Lane Decentralized Peer-to-Peer Energy Trading." IEEE Access 8, no. 99: 179616-179625.

Journal article
Published: 25 September 2020 in International Journal of Electrical Power & Energy Systems
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This paper studies the optimal energy management in a group of dwellings having micro fuel cell combined heat and power systems. To increase the self-sufficiency and resilience of such local community, a P2P energy trading system between dwellings is proposed in which output powers from fuel cells working under their rated powers can be sold to those already reach their rated outputs but still lack powers. The arising optimization problem from this optimal P2P energy trading system is non-convex due to the nonlinear dependence of power and heat efficiencies on fuel cell output power. Therefore, a linearization method is proposed to convexify the problem. Consequently, a distributed ADMM approach is introduced to solve the convexified optimization problem in parallel at each dwelling. A case study for a group of six dwellings based on realistic electric consumption data is then presented to demonstrate the proposed approach performance and positive impacts of the P2P energy trading system. More specifically, the proposed distributed ADMM approach is reasonably fast in convergence and is scalable well with system size. In addition, P2P electricity trading system helps operate fuel cells at a higher efficiency and increase the self-sufficiency of such dwellings.

ACS Style

Dinh Hoa Nguyen; Tatsumi Ishihara. Distributed peer-to-peer energy trading for residential fuel cell combined heat and power systems. International Journal of Electrical Power & Energy Systems 2020, 125, 106533 .

AMA Style

Dinh Hoa Nguyen, Tatsumi Ishihara. Distributed peer-to-peer energy trading for residential fuel cell combined heat and power systems. International Journal of Electrical Power & Energy Systems. 2020; 125 ():106533.

Chicago/Turabian Style

Dinh Hoa Nguyen; Tatsumi Ishihara. 2020. "Distributed peer-to-peer energy trading for residential fuel cell combined heat and power systems." International Journal of Electrical Power & Energy Systems 125, no. : 106533.

Journal article
Published: 17 August 2020 in Energy Conversion and Management
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This study used moving line source technique as a practical approach to simultaneously determine effective thermal conductivity, groundwater velocity and borehole resistance. It mainly focused on the applicability of this approach for observing the effect of groundwater extraction, in particular for ungrouted ground heat exchangers. The thermal response tests were carried out for different ground heat exchangers at two sites on the Akita University campus, northern Japan. The test conditions varied, based on different borehole filling condition (grouted/ungrouted), heat loads and presence of an extra pump for groundwater extraction. The hydro-thermal parameters of the ground were determined by a MATLAB code, especially for consideration of the effect of artificial groundwater velocity under a special test, where a water pump extracts the groundwater from the casing of the borehole during the test. This method can estimate the groundwater velocity and the effective thermal conductivity of the soil by reproducing the temperature distribution in the well and minimizing the root mean squared error between the calculated results and the measured data. As a result, the groundwater velocity and thermal conductivity calculated by this method improved to 205.3 cm/day and 7.48 W/m K, respectively, due to presence of the external pump, whereas the undisturbed groundwater velocity in the other cases without pumping was estimated in the range of 15 to 16 cm/day. Furthermore, the minimum groundwater velocity and thermal conductivity were reported for the grouted well as being equal to 10.79 cm/day and 1.16 W/m K, respectively.

ACS Style

Saeid Mohammadzadeh Bina; Hikari Fujii; Hiroyuki Kosukegawa; Hadi Farabi-Asl. Evaluation of ground source heat pump system’s enhancement by extracting groundwater and making artificial groundwater velocity. Energy Conversion and Management 2020, 223, 113298 .

AMA Style

Saeid Mohammadzadeh Bina, Hikari Fujii, Hiroyuki Kosukegawa, Hadi Farabi-Asl. Evaluation of ground source heat pump system’s enhancement by extracting groundwater and making artificial groundwater velocity. Energy Conversion and Management. 2020; 223 ():113298.

Chicago/Turabian Style

Saeid Mohammadzadeh Bina; Hikari Fujii; Hiroyuki Kosukegawa; Hadi Farabi-Asl. 2020. "Evaluation of ground source heat pump system’s enhancement by extracting groundwater and making artificial groundwater velocity." Energy Conversion and Management 223, no. : 113298.

Journal article
Published: 04 August 2020 in IEEE Transactions on Magnetics
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This paper is the first work to carefully investigate the characteristics of iron loss per weight and relative permeability between the flake and spherical powders with the sinusoidal excitation up to a high frequency of 3.5 MHz in experiments using three separate measurement systems. The composition of the considered powder samples contains 0.001 wt% C, 0.012 wt% Si, 0.09 wt% Mn, 0.0004 wt% P, 0.008 wt% S, and 0.06 wt% O. The flake particle has the preferred orientation that the easy axes are normal to the platelet face, and the water atomized iron powder was processed with ball milling with the lubrication. Key objectives of the utilization of the three independent measurement systems with different specialized equipment and probes are to cross-check and overcome unexpected measurement errors of the related devices in use for validating measured results thoroughly. Experimental results demonstrate the much better performances on the iron loss per weight and relative permeability of the flake powder than that of the spherical powder at high frequencies. Physics-based explanations for the measured results are also presented. Furthermore, two estimation functions based on a six-parameter Steinmetz equation for the measured iron loss of the powders are developed by using MATLAB.

ACS Style

Gia Minh Thao Nguyen; Keisuke Fujisaki; Long Ton That; Satoshi Motozuka. Magnetic Comparison Between Experimental Flake Powder and Spherical Powder for Inductor Cores at High Frequency. IEEE Transactions on Magnetics 2020, 57, 1 -7.

AMA Style

Gia Minh Thao Nguyen, Keisuke Fujisaki, Long Ton That, Satoshi Motozuka. Magnetic Comparison Between Experimental Flake Powder and Spherical Powder for Inductor Cores at High Frequency. IEEE Transactions on Magnetics. 2020; 57 (2):1-7.

Chicago/Turabian Style

Gia Minh Thao Nguyen; Keisuke Fujisaki; Long Ton That; Satoshi Motozuka. 2020. "Magnetic Comparison Between Experimental Flake Powder and Spherical Powder for Inductor Cores at High Frequency." IEEE Transactions on Magnetics 57, no. 2: 1-7.

Journal article
Published: 29 July 2020 in International Review of Economics & Finance
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The Fukushima nuclear disaster in March 2011 drastically changed the energy consumption pattern of Japan. Not being able to rely on nuclear energy, the country turned to fossil fuels and attempted to increase the share of renewable energy in its electricity generation mix. This paper will explore why geothermal energy is stagnating in Japan, despite the availability of resources and technologies. The paper first analyzes the various barriers to geothermal energy deployment in Japan from social, legal, economic, financial and technical viewpoints. The major contribution of this study is the quantification of the magnitude each barrier and supportive policy has on the development of geothermal power, with a special focus given to energy finance measures. The analysis is performed using a Vector Error Correction Model (VECM) using data from 1974 to 2017 and identifies the existence of a long-term relationship between variables, public research and development expenditures and the Feed-in-Tariff scheme. The latter appears to be the most efficient stimuli to foster geothermal power generation. Subsidies in their current form, on the other hand, have mixed results both in the long and short term. Environmental concerns and social opposition, on the other hand, appear to be among the major barriers in both the short and long term. Keywords: Geothermal Enermed; Energy Finance, Vector Error Correction Model.

ACS Style

Farhad Taghizadeh-Hesary; Aline Mortha; Hadi Farabi-Asl; Tapan Sarker; Andrew Chapman; Yosuke Shigetomi; Timothy Fraser. Role of energy finance in geothermal power development in Japan. International Review of Economics & Finance 2020, 70, 398 -412.

AMA Style

Farhad Taghizadeh-Hesary, Aline Mortha, Hadi Farabi-Asl, Tapan Sarker, Andrew Chapman, Yosuke Shigetomi, Timothy Fraser. Role of energy finance in geothermal power development in Japan. International Review of Economics & Finance. 2020; 70 ():398-412.

Chicago/Turabian Style

Farhad Taghizadeh-Hesary; Aline Mortha; Hadi Farabi-Asl; Tapan Sarker; Andrew Chapman; Yosuke Shigetomi; Timothy Fraser. 2020. "Role of energy finance in geothermal power development in Japan." International Review of Economics & Finance 70, no. : 398-412.

Journal article
Published: 23 June 2020 in International Journal of Greenhouse Gas Control
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In order to achieve the Paris Agreement target of well below 2-degrees centigrade goal, developed countries have committed to reducing their emissions considerably during the coming decades. In order to achieve the ambitious target of an 80 % CO2 emission reduction in Japan by 2050 (compared to 2013 levels), various energy efficient and low-carbon technologies on the supply and demand sides of the energy system must be deployed at reasonable cost. In this study, we investigate the possibility of achieving the emission reduction targets in Japan using the TIMES-Japan framework, which employs a least cost optimization approach. The contribution of carbon capture and storage (CCS) in achieving the emission reduction targets is studied in various scenarios as alongside the evaluation of two important emission reducing technologies in the same energy sector as CCS. Results of the analysis reveals the importance of hydrogen import on the supply side and the electrification of steel-making furnaces (EAF) on the demand side in order to obtain “feasible” scenarios. The minimum amount of CCS capacity is calculated for each scenario and the results vary between 5 and 150 million tons of CO2 by 2050. The range of minimum CCS capacity is wide and affected by the availability of hydrogen imports and EAF for steelmaking in various scenarios; while extremely low CCS capacity results in a very high energy system cost. Based on the results of our analysis, policy implications for appropriate levels of CCS, hydrogen import and EAF deployment are discussed.

ACS Style

Hadi Farabi-Asl; Kenshi Itaoka; Andrew Chapman; Etsushi Kato; Atsushi Kurosawa. Key factors for achieving emission reduction goals cognizant of CCS. International Journal of Greenhouse Gas Control 2020, 99, 103097 .

AMA Style

Hadi Farabi-Asl, Kenshi Itaoka, Andrew Chapman, Etsushi Kato, Atsushi Kurosawa. Key factors for achieving emission reduction goals cognizant of CCS. International Journal of Greenhouse Gas Control. 2020; 99 ():103097.

Chicago/Turabian Style

Hadi Farabi-Asl; Kenshi Itaoka; Andrew Chapman; Etsushi Kato; Atsushi Kurosawa. 2020. "Key factors for achieving emission reduction goals cognizant of CCS." International Journal of Greenhouse Gas Control 99, no. : 103097.

Journal article
Published: 20 May 2020 in Systems & Control Letters
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This paper studies the formation control problem in clustered network systems composing of linear agents that are subjected to state constraints. In each cluster, there exists an agent called a leader who can communicate with other leaders outside of its cluster at some specific discrete instants. Moreover, the continuous-time communication structure in each cluster is represented by a fixed and undirected graph. A robust formation control protocol is proposed to deal with the hybrid communication described above and the constraints on states of agents. It is next shown that the hybrid robust formation control design for clustered multi-agent networks can be indirectly solved through the robust stabilization design of an equivalent system obtained by matrix theory and algebraic graph theory. Then, a robust controller is designed for the initial clustered network system in terms of linear matrix inequalities. Finally, a formation design for unmanned aerial vehicles is carried out and simulated to illustrate the effectiveness of the proposed hybrid formation control design method.

ACS Style

Van Thiem Pham; Nadhir Messai; Dinh Hoa Nguyen; Noureddine Manamanni. Robust formation control under state constraints of multi-agent systems in clustered networks. Systems & Control Letters 2020, 140, 104689 .

AMA Style

Van Thiem Pham, Nadhir Messai, Dinh Hoa Nguyen, Noureddine Manamanni. Robust formation control under state constraints of multi-agent systems in clustered networks. Systems & Control Letters. 2020; 140 ():104689.

Chicago/Turabian Style

Van Thiem Pham; Nadhir Messai; Dinh Hoa Nguyen; Noureddine Manamanni. 2020. "Robust formation control under state constraints of multi-agent systems in clustered networks." Systems & Control Letters 140, no. : 104689.

Journal article
Published: 08 January 2020 in International Journal of Hydrogen Energy
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Decarbonization of the energy system is a key goal of the Paris Agreements, in order to limit temperature rises to under 2° Celsius. Hydrogen has the potential to play a key role through its versatile production methods, end uses and as a storage medium for renewable energy, engendering the future low-carbon energy system. This research uses a global model cognizant of energy policy, technology learning curves and international carbon reduction targets to optimize the future energy system in terms of cost and carbon emissions to the year 2050. Exploring combinations of four exploratory scenarios incorporating hydrogen city gas blend levels, nuclear restrictions, regional emission reduction obligations and carbon capture and storage deployment timelines, it was identified that hydrogen has the potential to supply approximately two percent of global energy needs by 2050. Irrespective of the quantity of hydrogen produced, the transport sector and passenger fuel cell vehicles are consistently a preferential end use for future hydrogen across regions and modeled scenarios. In addition to the potential contribution of hydrogen, a shift toward renewable energy and a significant role for carbon capture and storage is identified to underpin carbon target achievement by 2050.

ACS Style

Andrew Chapman; Kenshi Itaoka; Hadi Farabi-Asl; Yasumasa Fujii; Masaru Nakahara. Societal penetration of hydrogen into the future energy system: Impacts of policy, technology and carbon targets. International Journal of Hydrogen Energy 2020, 45, 3883 -3898.

AMA Style

Andrew Chapman, Kenshi Itaoka, Hadi Farabi-Asl, Yasumasa Fujii, Masaru Nakahara. Societal penetration of hydrogen into the future energy system: Impacts of policy, technology and carbon targets. International Journal of Hydrogen Energy. 2020; 45 (7):3883-3898.

Chicago/Turabian Style

Andrew Chapman; Kenshi Itaoka; Hadi Farabi-Asl; Yasumasa Fujii; Masaru Nakahara. 2020. "Societal penetration of hydrogen into the future energy system: Impacts of policy, technology and carbon targets." International Journal of Hydrogen Energy 45, no. 7: 3883-3898.

Journal article
Published: 01 January 2020 in IFAC-PapersOnLine
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A novel fully distributed proportional-integral (PI) formation controller design approach is proposed in this paper for general linear multi-agent systems (MASs) with model uncertainties and disturbances. First, an edge dynamics is developed for uncertain and perturbed linear MASs, based on which the formation control problem for the initial MAS is shown to be equivalent to a decentralized stabilizing problem for the obtained edge dynamics. Afterward, a necessary and sufficient condition for the PI controller gains is derived. A corollary of this condition shows that for integrator agents, PI controller gains can be any positive scalars. This result is then applied to the formation control of autonomous four-wheel vehicles described by nonlinear models, of which the efficiency of the proposed method is demonstrated in presence of both uncertainties and disturbances.

ACS Style

Dinh Hoa Nguyen. Distributed PI Formation Control Design for Autonomous Vehicles Using Edge Dynamics. IFAC-PapersOnLine 2020, 53, 3162 -3167.

AMA Style

Dinh Hoa Nguyen. Distributed PI Formation Control Design for Autonomous Vehicles Using Edge Dynamics. IFAC-PapersOnLine. 2020; 53 (2):3162-3167.

Chicago/Turabian Style

Dinh Hoa Nguyen. 2020. "Distributed PI Formation Control Design for Autonomous Vehicles Using Edge Dynamics." IFAC-PapersOnLine 53, no. 2: 3162-3167.

Journal article
Published: 21 November 2019 in IEEE Transactions on Sustainable Energy
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This article proposes a distributed consensus-based demand response control for permanent magnet synchronous generator (PMSG)-based wind turbines using standalone distributed battery energy storage systems (BESSs). The proposed controller cooperatively regulates the output power of individual wind turbines and BESSs in a wind farm to deliver active and reactive powers to the load in varying wind speed conditions. Capability curves of the wind turbines and BESSs are considered in the design. In addition, a virtual leader is designed to regulate the voltage and frequency of the combined PMSG-BESS units at the point of common coupling. Simulations on modified IEEE 14-bus power system are performed to validate the proposed design.

ACS Style

Javad Khazaei; Dinh Hoa Nguyen; Arash Asrari. Consensus-Based Demand Response of PMSG Wind Turbines With Distributed Energy Storage Considering Capability Curves. IEEE Transactions on Sustainable Energy 2019, 11, 2315 -2325.

AMA Style

Javad Khazaei, Dinh Hoa Nguyen, Arash Asrari. Consensus-Based Demand Response of PMSG Wind Turbines With Distributed Energy Storage Considering Capability Curves. IEEE Transactions on Sustainable Energy. 2019; 11 (4):2315-2325.

Chicago/Turabian Style

Javad Khazaei; Dinh Hoa Nguyen; Arash Asrari. 2019. "Consensus-Based Demand Response of PMSG Wind Turbines With Distributed Energy Storage Considering Capability Curves." IEEE Transactions on Sustainable Energy 11, no. 4: 2315-2325.

Conference paper
Published: 01 October 2019 in 2019 IEEE Vehicle Power and Propulsion Conference (VPPC)
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This research details a global model for the estimation of future hydrogen penetration into the carbon constrained energy system out to 2050. Results show that approximately 2.2% of global energy consumption needs can be met by 2050, with significant contributions in the city gas network and transportation sector. Notably, passenger FCVs dominate the transportation sector contribution, leading to a global deployment of over 100 million FCVs by 2050 across North America, Western Europe, South East Asia, China and Japan. Hydrogen production is focused in non- OECD nations, and derived mainly from fossil fuels. As a result, CCS has a strong role to play in the future energy system in order to underpin the deployment of a significant fleet of FCVs. Policy issues identified include the need for significant additional investment in the energy system and technological progress in renewables and electrolyzers to realize a shift away from a fossil fuel dominated hydrogen economy.

ACS Style

Andrew Chapman; Hadi Farabi-Asl; Dinh Hoa Nguyen; Kenshi Itaoka. Global Modelling of Hydrogen Penetration: Fuel Cell Vehicles and Infrastructure in a Carbon Constrained Future. 2019 IEEE Vehicle Power and Propulsion Conference (VPPC) 2019, 1 -4.

AMA Style

Andrew Chapman, Hadi Farabi-Asl, Dinh Hoa Nguyen, Kenshi Itaoka. Global Modelling of Hydrogen Penetration: Fuel Cell Vehicles and Infrastructure in a Carbon Constrained Future. 2019 IEEE Vehicle Power and Propulsion Conference (VPPC). 2019; ():1-4.

Chicago/Turabian Style

Andrew Chapman; Hadi Farabi-Asl; Dinh Hoa Nguyen; Kenshi Itaoka. 2019. "Global Modelling of Hydrogen Penetration: Fuel Cell Vehicles and Infrastructure in a Carbon Constrained Future." 2019 IEEE Vehicle Power and Propulsion Conference (VPPC) , no. : 1-4.

Journal article
Published: 11 September 2019 in Applied Energy
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The issue of climate change and the development of international agreements around carbon targets such as the Paris agreement have engendered the prospect of a carbon constrained future. As a result, individual nations who are signatory to the Paris Agreement have developed ambitious carbon reduction targets in order to restrict temperature rises to two degrees Celsius compared to pre-industrial levels. To achieve these ambitious goals, nations have a variety of policy approaches at their disposal including feed in tariffs, fossil fuel restrictions, carbon capture and storage, renewable portfolio standards and carbon trading regimes. This study investigates carbon trading, and, using Japan as a case study assesses the economic feasibility and environmental efficiency of a carbon trading scheme underpinned by renewable energy deployment. The model employed uses an optimization approach, cognizant of technological, geographic and economic constraints. Findings identify that such an approach incorporating the 47 prefectures of Japan could engender a 42% reduction in emissions without resilience constraints and 34% incorporating a best-mix, resilient approach. Both approaches prove feasible at moderate carbon prices, considering international norms. The findings underpin policy implications for a future national Japanese emission trading scheme to improve previous single prefecture attempts which did not engender carbon trading.

ACS Style

Dinh Hoa Nguyen; Andrew Chapman; Hadi Farabi-Asl. Nation-wide emission trading model for economically feasible carbon reduction in Japan. Applied Energy 2019, 255, 113869 .

AMA Style

Dinh Hoa Nguyen, Andrew Chapman, Hadi Farabi-Asl. Nation-wide emission trading model for economically feasible carbon reduction in Japan. Applied Energy. 2019; 255 ():113869.

Chicago/Turabian Style

Dinh Hoa Nguyen; Andrew Chapman; Hadi Farabi-Asl. 2019. "Nation-wide emission trading model for economically feasible carbon reduction in Japan." Applied Energy 255, no. : 113869.

Chapter
Published: 08 February 2019 in Numerical Methods for Energy Applications
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This chapter studies the output power regulation in wind farms consisting of doubly-fed induction generator wind turbines, one of the most popular generator configurations in modern multi-MW wind industry, equipped with on-site battery energy storage systems. Traditionally, wind farms were operated as standalone units or were equipped with a central, large-scale, energy storage system. In fact, most of the existing control designs for hybrid wind-storage applications are centralized, where the central unit collects the measured data from all wind turbines and storage systems (if they exist) and compares with the load demand to generate the reference power for each wind turbine controller. Those centralized setups or control structures do not fully exploit the flexibility and locality of the on-site energy storage systems in a wind farm. Moreover, the storage functionality is lost if the central storage system is broken down, while in a distributed architecture, a failure only affects individual on-site storage systems and the others will still operate. Therefore, on-site storage systems and distributed control designs need to be developed for wind farms to provide regulation services for the grid. An approach to tackle that challenge will be presented in this chapter.

ACS Style

Dinh Hoa Nguyen; Javad Khazaei; Susan W Stewart; Jennifer Annoni. Distributed Cooperative Control of Wind Farms with On-site Battery Energy Storage Systems. Numerical Methods for Energy Applications 2019, 41 -66.

AMA Style

Dinh Hoa Nguyen, Javad Khazaei, Susan W Stewart, Jennifer Annoni. Distributed Cooperative Control of Wind Farms with On-site Battery Energy Storage Systems. Numerical Methods for Energy Applications. 2019; ():41-66.

Chicago/Turabian Style

Dinh Hoa Nguyen; Javad Khazaei; Susan W Stewart; Jennifer Annoni. 2019. "Distributed Cooperative Control of Wind Farms with On-site Battery Energy Storage Systems." Numerical Methods for Energy Applications , no. : 41-66.

Journal article
Published: 01 February 2019 in Energy Procedia
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Ground source heat pump (GSHP) systems are energy-efficient technologies to provide low-carbon heating and cooling demands for the buildings. However, deployment of the GSHP systems in Japan is limited mainly due to the relatively high drilling costs for placement of the ground heat exchangers (GHEs), in comparison with EU and North American countries. This study is providing the historical data of deployment of different types of the GSHP systems in Japan, the supportive public policies and incentives for installation of GSHP systems. Finally, the barriers for the further utilization of the GSHP systems in Japanese buildings are discussed and solutions are suggested.

ACS Style

Hadi Farabi-Asl; Andrew Chapman; Kenshi Itaoka; Younes Noorollahi. Ground source heat pump status and supportive energy policies in Japan. Energy Procedia 2019, 158, 3614 -3619.

AMA Style

Hadi Farabi-Asl, Andrew Chapman, Kenshi Itaoka, Younes Noorollahi. Ground source heat pump status and supportive energy policies in Japan. Energy Procedia. 2019; 158 ():3614-3619.

Chicago/Turabian Style

Hadi Farabi-Asl; Andrew Chapman; Kenshi Itaoka; Younes Noorollahi. 2019. "Ground source heat pump status and supportive energy policies in Japan." Energy Procedia 158, no. : 3614-3619.

Journal article
Published: 01 February 2019 in Energy Procedia
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Considerable amount of energy is being consumed in the buildings worldwide. Space and water heating have big share in building energy consumption, account for 53.2% and 28.1% in Japanese residential and commercial buildings at 2015, respectively. Solar heating is a reliable and mature technology that experienced its remarkable success in Japan during late-1970s and early-1980s. However, during last 30 years, the number of installations in Japan is decreased, even after 2011 Fukushima nuclear disaster and energy challenge in Japan. This study is presenting a historical review on the solar heating market status, policy, and research trends in Japan with focus on the Japan’s glorious solar heating market at 1980’s. The reasons and barriers for further deployment of solar thermal technology are investigated and suggestions are presented.

ACS Style

Hadi Farabi-Asl; Andrew Chapman; Kenshi Itaoka; Farhad Taghizadeh-Hesary. Low-carbon water and space heating using solar energy, Japan’s experience. Energy Procedia 2019, 158, 947 -952.

AMA Style

Hadi Farabi-Asl, Andrew Chapman, Kenshi Itaoka, Farhad Taghizadeh-Hesary. Low-carbon water and space heating using solar energy, Japan’s experience. Energy Procedia. 2019; 158 ():947-952.

Chicago/Turabian Style

Hadi Farabi-Asl; Andrew Chapman; Kenshi Itaoka; Farhad Taghizadeh-Hesary. 2019. "Low-carbon water and space heating using solar energy, Japan’s experience." Energy Procedia 158, no. : 947-952.

Journal article
Published: 12 December 2018 in IFAC-PapersOnLine
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In Dual-Active-Bridge converter control system, high frequency terminal current is usually measured then fed-back to the current mode controller. However, the measurement requires wide bandwidth sensors, fast and precise operational amplifier, and high sampling rate Analog to Digital conversion. This paper proposes a Proportional Integral Observer to estimate such the current to eliminate the need of current sensors. A combined feedforward-feedback control system is then developed to enhance the system dynamics and to regulate the output voltage. The control system needs only the information of terminal voltages. Simulation and experiment results show that the observer performs fast and accurately with acceptable observation error; and the output voltage is well regulated regardless of load changes.

ACS Style

Duy-Dinh Nguyen; Dinh-Hoa Nguyen; Minh C. Ta; Goro Fujita. Sensorless Feedforward Current Control of Dual-Active-Bridge DC/DC Converter for Micro-Grid Applications. IFAC-PapersOnLine 2018, 51, 333 -338.

AMA Style

Duy-Dinh Nguyen, Dinh-Hoa Nguyen, Minh C. Ta, Goro Fujita. Sensorless Feedforward Current Control of Dual-Active-Bridge DC/DC Converter for Micro-Grid Applications. IFAC-PapersOnLine. 2018; 51 (28):333-338.

Chicago/Turabian Style

Duy-Dinh Nguyen; Dinh-Hoa Nguyen; Minh C. Ta; Goro Fujita. 2018. "Sensorless Feedforward Current Control of Dual-Active-Bridge DC/DC Converter for Micro-Grid Applications." IFAC-PapersOnLine 51, no. 28: 333-338.

Journal article
Published: 03 December 2018 in IEEE Transactions on Industrial Electronics
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This paper studies the automated DR problem in smart grids equipped with ICT networks, where power generating and consuming units can exchange information as an MAS, and a RTP scheme is proposed. When the communication graph among agents is connected, a novel parallel and distributed consensus-based algorithm is proposed to derive an RTP scheme to facilitate DR, and when communication uncertainties exist, a robust consensus algorithm is proposed to cease the effect of uncertainties. Next, this paper proposes a novel control mechanism to tackle the problem of disconnected communication among agents, e.g., under cyber-attacks, by employing the so-called mixed communication-broadcast control architecture where the underlying ideas are twofold. First, each area in the grid associated with a connected sub-graph is controlled by a MAS to guarantee the power balance and to reach consensus on the local electric price for that area. Second, a supervisory unit observes those local electric prices to calculate the global electric price for the whole grid and then broadcasts to all units so that they can properly adjust their output powers. Simulations are carried out on the IEEE 39-bus system to validate the proposed control mechanisms.

ACS Style

Dinh Hoa Nguyen; Shun-Ichi Azuma; Toshiharu Sugie. Novel Control Approaches for Demand Response With Real-Time Pricing Using Parallel and Distributed Consensus-Based ADMM. IEEE Transactions on Industrial Electronics 2018, 66, 7935 -7945.

AMA Style

Dinh Hoa Nguyen, Shun-Ichi Azuma, Toshiharu Sugie. Novel Control Approaches for Demand Response With Real-Time Pricing Using Parallel and Distributed Consensus-Based ADMM. IEEE Transactions on Industrial Electronics. 2018; 66 (10):7935-7945.

Chicago/Turabian Style

Dinh Hoa Nguyen; Shun-Ichi Azuma; Toshiharu Sugie. 2018. "Novel Control Approaches for Demand Response With Real-Time Pricing Using Parallel and Distributed Consensus-Based ADMM." IEEE Transactions on Industrial Electronics 66, no. 10: 7935-7945.