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Prof. Yuko Hirase
Toyo University

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0 Inverters
0 Motor Control
0 Synchronous Generators
0 microgrid control
0 AC/DC converters

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Inverters
Synchronous Generators

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Short Biography

Yuko Hirase received her M.Eng. degree in mathematical engineering from Osaka Prefecture University, Sakai, Osaka, Japan, in 1996, and her Ph.D. degree in electrical engineering from Osaka University, Suita, Osaka, Japan, in 2016. She was previously engaged in circuit design in the semiconductor field and motor control design in the robot engineering field. Since 2006 to 2019, she had worked for Kawasaki Technology Co., Ltd., Akashi, Hyogo, Japan. She has over 20 years of extensive experience in the industry field and project manager's experience. She is also skilled in prior art research and new patent application. She is currently an Associate Professor at Toyo University. She is involved in designing and development of power inverters for distributed power supplies and system stabilizers. Her research interests include microgrids, distributed generation, synchronous generators, and power conversion systems. She is a senior member of IEEE and a member of CIGRE.

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Journal article
Published: 28 July 2021 in Energies
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In the field of microgrids (MGs), steady-state power imbalances and frequency/voltage fluctuations in the transient state have been gaining prominence owing to the advancing distributed energy resources (DERs) connected to MGs via grid-connected inverters. Because a stable, safe power supply and demand must be maintained, accurate analyses of power system dynamics are crucial. However, the natural frequency components present in the dynamics make analyses complex. The nonlinearity and confidentiality of grid-connected inverters also hinder controllability. The MG considered in this study consisted of a synchronous generator (the main power source) and multiple grid-connected inverters with storage batteries and virtual synchronous generator (VSG) control. Although smart inverter controls such as VSG contribute to system stabilization, they induce system nonlinearity. Therefore, Koopman mode decomposition (KMD) was utilized in this study for consideration as a future method of data-driven analysis of the measured frequencies and voltages, and a frequency response analysis of the power system dynamics was performed. The Koopman operator is a linear operator on an infinite dimensional space, whereas the original dynamics is a nonlinear map on a finite state space. In other words, the proposed method can precisely analyze all the dynamics of the power system, which involve the complex nonlinearities caused by VSGs.

ACS Style

Yuko Hirase; Yuki Ohara; Naoya Matsuura; Takeaki Yamazaki. Dynamics Analysis Using Koopman Mode Decomposition of a Microgrid Including Virtual Synchronous Generator-Based Inverters. Energies 2021, 14, 4581 .

AMA Style

Yuko Hirase, Yuki Ohara, Naoya Matsuura, Takeaki Yamazaki. Dynamics Analysis Using Koopman Mode Decomposition of a Microgrid Including Virtual Synchronous Generator-Based Inverters. Energies. 2021; 14 (15):4581.

Chicago/Turabian Style

Yuko Hirase; Yuki Ohara; Naoya Matsuura; Takeaki Yamazaki. 2021. "Dynamics Analysis Using Koopman Mode Decomposition of a Microgrid Including Virtual Synchronous Generator-Based Inverters." Energies 14, no. 15: 4581.

Journal article
Published: 11 January 2021 in Energies
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As distributed power sources via grid-connected inverters equipped with functions to support system stabilization are being rapidly introduced, individual systems are becoming more complex, making the quantification and evaluation of the stabilizing functions difficult. Therefore, to introduce distributed power sources and achieve stable system operation, a system should be reduced to a necessary but sufficient size in order to enable the quantification of its behavior supported by transient theory. In this study, a system in which multiple distributed power supplies equipped with virtual synchronous generator control are connected is contracted to a two-machine system: a main power supply and all other power supplies. The mechanical torque of each power supply is mathematically decomposed into inertia, damping, synchronization torques, and the governor effect. The system frequency deviations determined by these elements are quantitatively indexed using MATLAB/Simulink. The quantification index displayed in three-dimensioned graphs illustrates the relationships between the various equipment constants of the main power supply, the control variables of the grid-connected inverter control, and the transient time series. Moreover, a stability analysis is performed in both the time and frequency domains.

ACS Style

Yuko Hirase; Kazusa Uezaki; Dai Orihara; Hiroshi Kikusato; Jun Hashimoto. Characteristic Analysis and Indexing of Multimachine Transient Stabilization Using Virtual Synchronous Generator Control. Energies 2021, 14, 366 .

AMA Style

Yuko Hirase, Kazusa Uezaki, Dai Orihara, Hiroshi Kikusato, Jun Hashimoto. Characteristic Analysis and Indexing of Multimachine Transient Stabilization Using Virtual Synchronous Generator Control. Energies. 2021; 14 (2):366.

Chicago/Turabian Style

Yuko Hirase; Kazusa Uezaki; Dai Orihara; Hiroshi Kikusato; Jun Hashimoto. 2021. "Characteristic Analysis and Indexing of Multimachine Transient Stabilization Using Virtual Synchronous Generator Control." Energies 14, no. 2: 366.

Short communication
Published: 22 December 2020 in Energy Reports
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To achieve a sustainable energy supply, the expectations are increasing for autonomous decentralized microgrids (MGs) that effectively combine renewable and fossil-fuel-based energies. When a power imbalance occurs in an MG, based on the governor free control (GFC), the output sharing and frequency of the MG are first determined by the inertial force and synchronization between distributed generators (DGs). Next, desired power-sharing and frequency recovery are performed by secondary frequency control (LFC) in the control mechanism of the MG. However, in interconnected microgrids (IMGs), not only loads (LDs) but also DGs are connected/disconnected arbitrarily, and it is difficult to analyze the synchronization forces and tie-line power accurately. Therefore, in this research, we constructed a frequency response model (FRM) of MG composed of various DGs with different inertias and time constants and applied the extended virtual synchronous generator (E-VSG) model to it. It was confirmed by the simulation that frequency nadir and recovery time could be significantly shortened by properly setting the parameters of E-VSG without interfering with those of the existing DGs. Furthermore, in a system in which three MGs are interconnected, even if there is no E-VSG in the MG where the power disturbance occurs, the similar effects by the EVSG in other MGs were confirmed due to the tie-line powers.

ACS Style

Yuko Hirase; Yuki Ohara; Hassan Bevrani. Virtual synchronous generator based frequency control in interconnected microgrids. Energy Reports 2020, 6, 97 -103.

AMA Style

Yuko Hirase, Yuki Ohara, Hassan Bevrani. Virtual synchronous generator based frequency control in interconnected microgrids. Energy Reports. 2020; 6 ():97-103.

Chicago/Turabian Style

Yuko Hirase; Yuki Ohara; Hassan Bevrani. 2020. "Virtual synchronous generator based frequency control in interconnected microgrids." Energy Reports 6, no. : 97-103.

Research article
Published: 01 August 2019 in IET Energy Systems Integration
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Grid-tied inverters have become required to equip the function that supports electrical grids stable. So-called ‘smart inverters’ have also been shown to provide load distribution under steady state. Similarly, other types of advanced inverters that contribute to transient grid stability have recently attracted attention. Combining a battery with an inverter not only enables the use of renewable energy (RE) regardless of time or season but also increases the system inertial and synchronising forces due to its high responsiveness. However, the use of these grid-supportive features in inverters is commonly not disclosed by manufacturers; thus, a system administrator must uniformly regulate and verify the effects. Although the requirements for smart inverters' are being established, those for advanced inverters with transient contributions have not yet been formulated. Furthermore, these requirements must confirm the transient-supportive functions regardless of the inverter control method. Therefore, this work proposes a set of guidelines for establishing these requirements based on stabilisation/disturbance theory. Furthermore, it was confirmed by simulation that inverter control satisfying these requirements can be realised, for example, by a control method that simulates a virtual inertial force.

ACS Style

Yuko Hirase. Guidelines for required grid‐supportive functions in grid‐tied inverters with distributed energy resources. IET Energy Systems Integration 2019, 1, 236 -245.

AMA Style

Yuko Hirase. Guidelines for required grid‐supportive functions in grid‐tied inverters with distributed energy resources. IET Energy Systems Integration. 2019; 1 (4):236-245.

Chicago/Turabian Style

Yuko Hirase. 2019. "Guidelines for required grid‐supportive functions in grid‐tied inverters with distributed energy resources." IET Energy Systems Integration 1, no. 4: 236-245.

Journal article
Published: 27 July 2018 in Applied Energy
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When numerous inertia-less distributed power supplies (DPSs) are connected to a microgrid (MG), the inertial force of the entire system may be insufficient. The lack of inertial force will cause the system frequency and voltage to be transiently unstable; thus, parallel operation of multiple inverters may be difficult. As a means of solving these problems, the use of virtual synchronous generator (VSG) control, in which the inverter has a virtual inertial force and simulates the inertial behaviour of a synchronous generator (SG), is attracting interest. In residential applications, photovoltaics (PVs) and fuel cells (FCs) are examples of home DPSs that are connected to grids via inertia-less inverters. The virtual inertial force in a VSG is produced by a storage battery (BAT). Therefore, when using a VSG-controlled BAT as the main power supply in the islanded MG of a residential building, FCs can be employed as stable charging power sources for BATs instead of PVs, which are weather- and time-dependent. In addition, FCs and BATs are complementary in the sense that BATs transiently compensate for the slow responsiveness of FCs. In this paper, an autonomous power management (APM) approach, in which electric power is interchanged within an islanded MG, is proposed, where an MG consists of a set of nanogrids (NGs), meaning residential units. The power sources in the NG are FCs and BATs connected via conventional current- and VSG-controlled inverters, respectively. Both the VSG and conventional current controls are primary controls, while APM acts as a secondary control. As a VSG provides an autonomous governor-free function, interlinks between the NGs and centralised control in a higher layer are not required, and all of the abovementioned controls are installed in each NG. The advantages of communication-less, decentralised autonomous power interchange among NGs are easy operation and improved flexibility and scalability of stable MGs.

ACS Style

Y. Hirase; O. Noro; H. Nakagawa; E. Yoshimura; S. Katsura; K. Abe; K. Sugimoto; K. Sakimoto. Decentralised and interlink-less power interchange among residences in microgrids using virtual synchronous generator control. Applied Energy 2018, 228, 2437 -2447.

AMA Style

Y. Hirase, O. Noro, H. Nakagawa, E. Yoshimura, S. Katsura, K. Abe, K. Sugimoto, K. Sakimoto. Decentralised and interlink-less power interchange among residences in microgrids using virtual synchronous generator control. Applied Energy. 2018; 228 ():2437-2447.

Chicago/Turabian Style

Y. Hirase; O. Noro; H. Nakagawa; E. Yoshimura; S. Katsura; K. Abe; K. Sugimoto; K. Sakimoto. 2018. "Decentralised and interlink-less power interchange among residences in microgrids using virtual synchronous generator control." Applied Energy 228, no. : 2437-2447.

Conference paper
Published: 01 May 2018 in 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)
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ACS Style

Yuko Hirase; Hidehiko Nakagawa; Eiji Yoshimura; Shogo Katsura; Kensho Abe; Osamu Noro; Kazushige Sugimoto; Kenichi Sakimoto. Stable Power Supply Method for Household Appliances via Virtual Synchronous Generator in Single-Phase Three-Wire Microgrid. 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) 2018, 1 .

AMA Style

Yuko Hirase, Hidehiko Nakagawa, Eiji Yoshimura, Shogo Katsura, Kensho Abe, Osamu Noro, Kazushige Sugimoto, Kenichi Sakimoto. Stable Power Supply Method for Household Appliances via Virtual Synchronous Generator in Single-Phase Three-Wire Microgrid. 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia). 2018; ():1.

Chicago/Turabian Style

Yuko Hirase; Hidehiko Nakagawa; Eiji Yoshimura; Shogo Katsura; Kensho Abe; Osamu Noro; Kazushige Sugimoto; Kenichi Sakimoto. 2018. "Stable Power Supply Method for Household Appliances via Virtual Synchronous Generator in Single-Phase Three-Wire Microgrid." 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) , no. : 1.

Journal article
Published: 01 January 2018 in Applied Energy
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ACS Style

Yuko Hirase; Kensho Abe; Kazushige Sugimoto; Kenichi Sakimoto; Hassan Bevrani; Toshifumi Ise. A novel control approach for virtual synchronous generators to suppress frequency and voltage fluctuations in microgrids. Applied Energy 2018, 210, 699 -710.

AMA Style

Yuko Hirase, Kensho Abe, Kazushige Sugimoto, Kenichi Sakimoto, Hassan Bevrani, Toshifumi Ise. A novel control approach for virtual synchronous generators to suppress frequency and voltage fluctuations in microgrids. Applied Energy. 2018; 210 ():699-710.

Chicago/Turabian Style

Yuko Hirase; Kensho Abe; Kazushige Sugimoto; Kenichi Sakimoto; Hassan Bevrani; Toshifumi Ise. 2018. "A novel control approach for virtual synchronous generators to suppress frequency and voltage fluctuations in microgrids." Applied Energy 210, no. : 699-710.

Journal article
Published: 31 March 2017 in Journal of the Japan Institute of Power Electronics
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To prepare for potential power outages, an increasing number of homes have been equipped with emergency power supplies. Although a grid-disconnected inverter with a battery is promising as an emergency power supply, in order to use home appliances continuously in the same manner as in normal times, the inverter needs to build a single-phase three-wire system as well as the commercial grid. To solve this problem, we propose the theory of virtual synchronous generator (VSG). This control method is developed expanding the previous method for a single-phase two-wired system to a single-phase three-wire system.Because the VSG can supply unbalanced power as same as the commercial grid, there is no need to reconnect home appliances to dedicated outlets, and it is possible to realize uninterruptible power supply to home appliances for daily use at the sudden power failure.

ACS Style

Yuko Hirase; Kensho Abe; Kazushige Sugimoto; Kenichi Sakimoto. Power Supply to Home Appliances and Cooperation with Other Generators in Single-phase Three-wired System by Virtual Synchronous Generator. Journal of the Japan Institute of Power Electronics 2017, 43, 50 -58.

AMA Style

Yuko Hirase, Kensho Abe, Kazushige Sugimoto, Kenichi Sakimoto. Power Supply to Home Appliances and Cooperation with Other Generators in Single-phase Three-wired System by Virtual Synchronous Generator. Journal of the Japan Institute of Power Electronics. 2017; 43 ():50-58.

Chicago/Turabian Style

Yuko Hirase; Kensho Abe; Kazushige Sugimoto; Kenichi Sakimoto. 2017. "Power Supply to Home Appliances and Cooperation with Other Generators in Single-phase Three-wired System by Virtual Synchronous Generator." Journal of the Japan Institute of Power Electronics 43, no. : 50-58.

Journal article
Published: 01 January 2017 in IEEJ Transactions on Industry Applications
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ACS Style

Yuko Hirase; Osamu Noro; Shogo Katsura; Kensho Abe; Eiji Yoshimura; Kazushige Sugimoto; Kenichi Sakimoto. Virtual Synchronous Generator Control for Single-Phase Three-Wire Systems. IEEJ Transactions on Industry Applications 2017, 137, 546 -552.

AMA Style

Yuko Hirase, Osamu Noro, Shogo Katsura, Kensho Abe, Eiji Yoshimura, Kazushige Sugimoto, Kenichi Sakimoto. Virtual Synchronous Generator Control for Single-Phase Three-Wire Systems. IEEJ Transactions on Industry Applications. 2017; 137 (6):546-552.

Chicago/Turabian Style

Yuko Hirase; Osamu Noro; Shogo Katsura; Kensho Abe; Eiji Yoshimura; Kazushige Sugimoto; Kenichi Sakimoto. 2017. "Virtual Synchronous Generator Control for Single-Phase Three-Wire Systems." IEEJ Transactions on Industry Applications 137, no. 6: 546-552.

Proceedings article
Published: 01 September 2016 in 2016 IEEE 17th Workshop on Control and Modeling for Power Electronics (COMPEL)
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Because of the increasing use of renewable energy technology, distributed power sources and greatly varying loads can be critical factors in power system destabilization. This problem has hampered the adoption of renewable energy; thus, researchers have studied various control method types that enable an inverter to be operated as a synchronous generator (SG). Some of these methods, referred to as Virtual Synchronous Generators (VSGs), are designed to provide virtual inertia. Using VSG technology, we can decrease the introduction of fossil fuel-based power, which allows a variety of energy sources to be combined. In this study, we derived and analyzed the frequency system dynamics of microgrids, and show that a VSG expressed as a first-order equation can stabilize the frequency of a grid without causing resonance among the generators and loads. Furthermore, we derived excitation system dynamics, and observed that a VSG applying constant impedance can reduce the voltage fluctuations in the system. The results were verified in laboratory experiments and through a simulation using EMTP-RV. The simulation test results, which were generated using data acquired from an actual photovoltaic facility, indicated that the VSG could effectively suppress system deviations caused by sudden weather change.

ACS Style

Yuko Hirase; K. Abe; O. Noro; K. Sugimoto; K. Sakimoto. Stabilization effect of virtual synchronous generators in microgrids with highly penetrated renewable energies. 2016 IEEE 17th Workshop on Control and Modeling for Power Electronics (COMPEL) 2016, 1 -8.

AMA Style

Yuko Hirase, K. Abe, O. Noro, K. Sugimoto, K. Sakimoto. Stabilization effect of virtual synchronous generators in microgrids with highly penetrated renewable energies. 2016 IEEE 17th Workshop on Control and Modeling for Power Electronics (COMPEL). 2016; ():1-8.

Chicago/Turabian Style

Yuko Hirase; K. Abe; O. Noro; K. Sugimoto; K. Sakimoto. 2016. "Stabilization effect of virtual synchronous generators in microgrids with highly penetrated renewable energies." 2016 IEEE 17th Workshop on Control and Modeling for Power Electronics (COMPEL) , no. : 1-8.

Journal article
Published: 16 June 2016 in IEEE Journal of Emerging and Selected Topics in Power Electronics
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In order to reduce greenhouse gases, distributed generators such as wind turbines and photovoltaic facilities have been adopted in many parts of the world. These sources are assumed to be connected to an infinite bus. Thus, if the total capacity of the grid-connected inverters is approximately equal to or greater than that of conventional synchronous generators (SGs), conventional methods such as simple current control cannot maintain power grid stability. In particular, this problem becomes conspicuous in isolated islands and small communities where large commercial power systems do not exist. On the other hand, if we use supervisory control, system flexibility and scalability will be reduced. Therefore, nonsupervisory autonomous control methods are desired. For this reason, many researchers have already studied, which enables an inverter to be operated as an SG. Some of them are called virtual SG (VSG) control, and the common point of them is to provide virtual inertia. In this paper, we have derived and analyzed a formula for the dynamic stability of microgrids and shown that the VSG expressed in the first-order equation can realize a stable grid without causing resonance among the generators and the loads. The results were verified in laboratory experiments and through a simulation using electro-magnetic transient program restructured version (EMTP-RV).

ACS Style

Yuko Hirase; Kazushige Sugimoto; Kenichi Sakimoto; Toshifumi Ise. Analysis of Resonance in Microgrids and Effects of System Frequency Stabilization Using a Virtual Synchronous Generator. IEEE Journal of Emerging and Selected Topics in Power Electronics 2016, 4, 1287 -1298.

AMA Style

Yuko Hirase, Kazushige Sugimoto, Kenichi Sakimoto, Toshifumi Ise. Analysis of Resonance in Microgrids and Effects of System Frequency Stabilization Using a Virtual Synchronous Generator. IEEE Journal of Emerging and Selected Topics in Power Electronics. 2016; 4 (4):1287-1298.

Chicago/Turabian Style

Yuko Hirase; Kazushige Sugimoto; Kenichi Sakimoto; Toshifumi Ise. 2016. "Analysis of Resonance in Microgrids and Effects of System Frequency Stabilization Using a Virtual Synchronous Generator." IEEE Journal of Emerging and Selected Topics in Power Electronics 4, no. 4: 1287-1298.

Conference paper
Published: 01 November 2015 in IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society
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When a greatly varying load is connected to a weak system, stability of the system becomes a problem. In these days, because the use of renewable energy is accelerating, not only the loads but also the distributed power sources can be critical factors in destabilizing the system. The virtual synchronous generator (VSG) control allows a static inverter to behave similar to a synchronous generator (SG). Using this VSG technology, we can decrease the introduction ratio of SGs with fossil fuels, and thus, we can combine various types of power sources. At the same time, if the combination of governor and rotor inertia is represented in a first-order lag element, the VSG can suppress the frequency fluctuations in microgrids. In this paper, we present a design guideline of a VSG. The simulation results by EMTP-RV confirmed that the parallel-connected VSG can suppress the frequency fluctuation. In addition, the results were almost consistent with the experimental test results.

ACS Style

Yuko Hirase; O. Noro; K. Sugimoto; K. Sakimoto; Yuji Shindo; T. Ise. Effects and analysis of suppressing frequency fluctuations in microgrids using virtual synchronous generator control. IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society 2015, 000043 -000049.

AMA Style

Yuko Hirase, O. Noro, K. Sugimoto, K. Sakimoto, Yuji Shindo, T. Ise. Effects and analysis of suppressing frequency fluctuations in microgrids using virtual synchronous generator control. IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society. 2015; ():000043-000049.

Chicago/Turabian Style

Yuko Hirase; O. Noro; K. Sugimoto; K. Sakimoto; Yuji Shindo; T. Ise. 2015. "Effects and analysis of suppressing frequency fluctuations in microgrids using virtual synchronous generator control." IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society , no. : 000043-000049.

Journal article
Published: 01 January 2015 in IEEJ Journal of Industry Applications
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Several virtual synchronous generator (VSG) controls for three-phase inverters have been proposed in order to extend the advantages of synchronous generators to inverters. The VSG controls facilitate smooth transitions between the grid-connected mode and the island mode. The governor and the automatic voltage regulator (AVR) realized in the VSG stabilize the frequency and the voltage respectively in the island mode. In addition, they can control the active and reactive power of the inverter in the grid-connected mode. The objective of this paper is to extend these useful properties of VSG to single-phase inverters. The proposed single-phase inverter with a VSG is based on two synchronous d-q reference frames, i.e., the positive and negative sequences. The double decoupled synchronous reference frame (DDSRF) theory is applied to generate these two reference frames. The simulation and experimental results indicate that the properties of a three-phase inverter with a VSG can be extended to a single-phase inverter effectively.

ACS Style

Yuko Hirase; Osamu Noro; Eiji Yoshimura; Hidehiko Nakagawa; Kenichi Sakimoto; Yuji Shindo. Virtual Synchronous Generator Control with Double Decoupled Synchronous Reference Frame for Single-Phase Inverter. IEEJ Journal of Industry Applications 2015, 4, 143 -151.

AMA Style

Yuko Hirase, Osamu Noro, Eiji Yoshimura, Hidehiko Nakagawa, Kenichi Sakimoto, Yuji Shindo. Virtual Synchronous Generator Control with Double Decoupled Synchronous Reference Frame for Single-Phase Inverter. IEEJ Journal of Industry Applications. 2015; 4 (3):143-151.

Chicago/Turabian Style

Yuko Hirase; Osamu Noro; Eiji Yoshimura; Hidehiko Nakagawa; Kenichi Sakimoto; Yuji Shindo. 2015. "Virtual Synchronous Generator Control with Double Decoupled Synchronous Reference Frame for Single-Phase Inverter." IEEJ Journal of Industry Applications 4, no. 3: 143-151.

Conference paper
Published: 01 May 2014 in 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)
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We have proposed the Virtual Synchronous Generator control (VSG control) and have tested it using the demonstration equipment [1]. By using the VSG control, three-phase inverters of current control type are able to run both in grid-connecting operation and in grid-disconnecting operation. Furthermore, in order to control a single-phase inverter like a three-phase inverter using the VSG control, we have applied the technique called “Double Decoupled Synchronous Reference Frame” (DDSRF). In this paper, we will show you the simulation results and experimental results of the single-phase inverter using the VSG control with DDSRF.

ACS Style

Yuko Hirase; Osamu Noro; Eiji Yoshimura; Hidehiko Nakagawa; Kenichi Sakimoto; Yuji Shindo; Hirase Y.; Noro O.; Yoshimura E.; Nakagawa H.; Sakimoto K.. Virtual Synchronous Generator control with Double Decoupled Synchronous Reference Frame for single-phase inverter. 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA) 2014, 1552 -1559.

AMA Style

Yuko Hirase, Osamu Noro, Eiji Yoshimura, Hidehiko Nakagawa, Kenichi Sakimoto, Yuji Shindo, Hirase Y., Noro O., Yoshimura E., Nakagawa H., Sakimoto K.. Virtual Synchronous Generator control with Double Decoupled Synchronous Reference Frame for single-phase inverter. 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA). 2014; ():1552-1559.

Chicago/Turabian Style

Yuko Hirase; Osamu Noro; Eiji Yoshimura; Hidehiko Nakagawa; Kenichi Sakimoto; Yuji Shindo; Hirase Y.; Noro O.; Yoshimura E.; Nakagawa H.; Sakimoto K.. 2014. "Virtual Synchronous Generator control with Double Decoupled Synchronous Reference Frame for single-phase inverter." 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA) , no. : 1552-1559.

Journal article
Published: 17 June 2013 in Electrical Engineering in Japan
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This paper presents experimental results on a grid‐connected inverter. The control of the inverter is based on a virtual synchronous generator model of algebraic type. When using the virtual synchronous generator model of algebraic type, there is no evidence for satisfactory operation with unbalanced load and nonlinear load, because the generator models are constructed under the assumption that the load is linear and balanced. By choosing the feedback control loop gain appropriately, satisfactory operation is achieved even if an unbalanced and nonlinear load is connected. Experimental results show that the power controls, active and reactive, are achieved preferably in grid‐connecting mode. Smooth transitions are also achieved from the connected mode to the island mode. The inverter can operate satisfactorily when the unbalanced load is connected. Harmonic analysis is performed with a three‐phase full‐wave rectifier connected as a nonlinear load. The harmonic current is supplied by the inverter and its output LC filter. It is shown that the harmonic current is supplied mainly by the inverter and that the voltage waveform is acceptable for practical use. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 184(4): 10–21, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22428

ACS Style

Yuko Hirase; Kazuhiro Abe; Kazushige Sugimoto; Yuji Shindo. A grid-connected inverter with virtual synchronous generator model of algebraic type. Electrical Engineering in Japan 2013, 184, 10 -21.

AMA Style

Yuko Hirase, Kazuhiro Abe, Kazushige Sugimoto, Yuji Shindo. A grid-connected inverter with virtual synchronous generator model of algebraic type. Electrical Engineering in Japan. 2013; 184 (4):10-21.

Chicago/Turabian Style

Yuko Hirase; Kazuhiro Abe; Kazushige Sugimoto; Yuji Shindo. 2013. "A grid-connected inverter with virtual synchronous generator model of algebraic type." Electrical Engineering in Japan 184, no. 4: 10-21.

Journal article
Published: 01 January 2012 in IEEJ Transactions on Power and Energy
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ACS Style

Yuko Hirase; Kazuhiro Abe; Kazushige Sugimoto; Yuji Shindo. A Grid Connected Inverter with Virtual Synchronous Generator Model of Algebraic Type. IEEJ Transactions on Power and Energy 2012, 132, 371 -380.

AMA Style

Yuko Hirase, Kazuhiro Abe, Kazushige Sugimoto, Yuji Shindo. A Grid Connected Inverter with Virtual Synchronous Generator Model of Algebraic Type. IEEJ Transactions on Power and Energy. 2012; 132 (4):371-380.

Chicago/Turabian Style

Yuko Hirase; Kazuhiro Abe; Kazushige Sugimoto; Yuji Shindo. 2012. "A Grid Connected Inverter with Virtual Synchronous Generator Model of Algebraic Type." IEEJ Transactions on Power and Energy 132, no. 4: 371-380.