This page has only limited features, please log in for full access.

Unclaimed
Yitao Liu
College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, China

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 14 June 2021 in IEEE Access
Reads 0
Downloads 0

The scattered resistive elements residing in a dual-active-bridge (DAB) dc/dc converter can adversely affect its transient performance especially when the load change is large. Conventional phase-shift methods do not take the resistive impact into account in their modeling and analysis. In this paper, a comprehensive analysis of the detrimental influence on the transient performance of a DAB converter due to resistive elements is presented, based on which a modified phase-shift scheme is proposed to further optimize the transient response of the converter. A DAB prototype is designed to verify the resistive impact discussed and validate the proposed phase-shift scheme. The experimental results confirm that better transient response can be effectively achieved with the proposal.

ACS Style

Jian Yin; Jian Lu; Hui Jiang; Yitao Liu; Jianchun Peng. Modified Phase-Shift Scheme for Optimal Transient Response of Dual-Active-Bridge DC/DC Converters Considering the Resistive Impact. IEEE Access 2021, 9, 1 -1.

AMA Style

Jian Yin, Jian Lu, Hui Jiang, Yitao Liu, Jianchun Peng. Modified Phase-Shift Scheme for Optimal Transient Response of Dual-Active-Bridge DC/DC Converters Considering the Resistive Impact. IEEE Access. 2021; 9 ():1-1.

Chicago/Turabian Style

Jian Yin; Jian Lu; Hui Jiang; Yitao Liu; Jianchun Peng. 2021. "Modified Phase-Shift Scheme for Optimal Transient Response of Dual-Active-Bridge DC/DC Converters Considering the Resistive Impact." IEEE Access 9, no. : 1-1.

Journal article
Published: 31 December 2020 in IEEE Transactions on Industrial Electronics
Reads 0
Downloads 0

EMI filter is an essential part of the inverter system due to the high operative switching frequency of power switch tube. The optimization of EMI filter design has a far-reaching impact on the coming industrial application area. Based on the Silicon carbide (SiC) MOSFET single-phase inverter, this paper investigates a full integration strategy with the UU-type ferrite core and flexible multi-layer foil (FMLF) applied. The FMLF contains electrical-, dielectric- and insulation layers. With the ingenious design of the FMLF windings, the inductance and capacitance can be integrated into the same unit. Based on the special design with double dielectric layer embedded, a novel full integration structure comes into being, with the common-mode (CM) and differential-mode (DM) capacitance designed following with the CM and DM inductance. The magnetic simulation has been conducted for analyzing the structure and ensuring that the core will not reach saturation under full load. A SiC MOSFET single-phase inverter has been designed as the experiment platform, and the conducted EMI noise measurement results have verified the feasibility and validity of the proposed fully integrated structure.

ACS Style

Shiqi Jiang; Yitao Liu; Xin Ye; Xuewei Pan. Design of a Fully Integrated EMI Filter for A Single-Phase Grid-connected Inverter. IEEE Transactions on Industrial Electronics 2020, PP, 1 -1.

AMA Style

Shiqi Jiang, Yitao Liu, Xin Ye, Xuewei Pan. Design of a Fully Integrated EMI Filter for A Single-Phase Grid-connected Inverter. IEEE Transactions on Industrial Electronics. 2020; PP (99):1-1.

Chicago/Turabian Style

Shiqi Jiang; Yitao Liu; Xin Ye; Xuewei Pan. 2020. "Design of a Fully Integrated EMI Filter for A Single-Phase Grid-connected Inverter." IEEE Transactions on Industrial Electronics PP, no. 99: 1-1.

Journal article
Published: 21 December 2020 in IEEE Journal of Emerging and Selected Topics in Power Electronics
Reads 0
Downloads 0

A novel amplitude-domain pulse-width modulation (AD-PWM) technique for three-phase energy stored quasi-Z-source (ES-qZSI) photovoltaic (PV) power system is proposed in this paper. The proposed modulation technique performs switching states and shoot-through behavior based on the relationship of size among three-phase voltages, showing the attractiveness of extreme simplicity and low computation. This paper further investigates the AD-PWM based three-phase PV power system. An active power control method integrated with reactive power compensation for the system in natural coordinate to avoid complicated calculation of trigonometric function. As a result, active power regulation integrated with reactive power compensation is fast and reliable. Compare with the state-of-arts of control schemes for ES-qZSI system utilizing techniques, the proposed control strategy has advantages: 1) The computation is low because there is no shoot-through reference and avoiding complexity vector calculation; 2) there is a reliable capability of ensuring the grid-injected current tracking the grid voltage in phase, owing to the reactive power generated by reactive power equipment is taken into account to control the ES-qZSI’s output current. Simulation and experimental results verify the outstanding features of the proposed AD-PWM and active power control strategy integrated with the reactive power compensation technique for three-phase ES-qZSI PV power system.

ACS Style

Weihua Liang; Yitao Liu; Runqiu Fang; Jianchun Peng. Investigation on Amplitude-Domain Modulation for Three-Phase Energy Stored Quasi-Z Source Inverter. IEEE Journal of Emerging and Selected Topics in Power Electronics 2020, PP, 1 -1.

AMA Style

Weihua Liang, Yitao Liu, Runqiu Fang, Jianchun Peng. Investigation on Amplitude-Domain Modulation for Three-Phase Energy Stored Quasi-Z Source Inverter. IEEE Journal of Emerging and Selected Topics in Power Electronics. 2020; PP (99):1-1.

Chicago/Turabian Style

Weihua Liang; Yitao Liu; Runqiu Fang; Jianchun Peng. 2020. "Investigation on Amplitude-Domain Modulation for Three-Phase Energy Stored Quasi-Z Source Inverter." IEEE Journal of Emerging and Selected Topics in Power Electronics PP, no. 99: 1-1.

Journal article
Published: 08 December 2020 in IEEE Transactions on Electromagnetic Compatibility
Reads 0
Downloads 0

Harmonics and conducted electromagnetic interference (EMI) are two main issues in grid-connected inverter system. In this article, a modified LCL-LC harmonic filter is structured to strengthen its EMI suppression ability. Considering the common mode and differential mode EMI propagation paths, the traditional LCL-LC filter is split into a symmetrical topology, and with the midpoint of the split filtering capacitors connected to the midpoint of the dc-link capacitor. Compared to the traditional LCL-LC filter, the modified one can maintain the satisfied harmonic attenuation ability and strengthen the EMI suppression. Also, a double closed-loop control strategy is employed to solve the severe resonance problem caused by the harmonic filter. Moreover, a system calibration method is proposed and introduced to design the controller parameters to improve the high-order grid-connected system's stability. A comprehensive analysis and discussions concerning the traditional and modified LCL-LC filters are conducted in simulation and experiment on a 2 kW/220 V/50 Hz single-phase grid-connected inverter. The results have verified the feasibility of the proposed design method, and shown the superiority of the modified LCL-LC filter and active damping strategy in EMI mitigation. Besides, the weight and volume of the harmonic filter can be significantly reduced through this strategy.

ACS Style

Shiqi Jiang; Yitao Liu. EMI Noise Reduction for the Single-Phase Grid-Connected Inverter With A Modified Harmonic Filter Design. IEEE Transactions on Electromagnetic Compatibility 2020, 63, 739 -751.

AMA Style

Shiqi Jiang, Yitao Liu. EMI Noise Reduction for the Single-Phase Grid-Connected Inverter With A Modified Harmonic Filter Design. IEEE Transactions on Electromagnetic Compatibility. 2020; 63 (3):739-751.

Chicago/Turabian Style

Shiqi Jiang; Yitao Liu. 2020. "EMI Noise Reduction for the Single-Phase Grid-Connected Inverter With A Modified Harmonic Filter Design." IEEE Transactions on Electromagnetic Compatibility 63, no. 3: 739-751.

Journal article
Published: 06 August 2020 in IEEE Transactions on Industrial Electronics
Reads 0
Downloads 0

The transient performance during power reversal in a bidirectional dual active bridge (DAB) dcdc converter usually suffers from the issues of current deviation, hard switching, and other induced problems. In this paper, a novel phase-shift method for fast power reversal in a DAB converter is proposed, which can achieve transient zero voltage switching (ZVS) without dc current bias, and therefore shows advanced transient performance. The detailed algorithms and the effective phase-shift ranges based on different voltage conversion ratios are elaborated. An error analysis of the performance of dc bias elimination is provided to evaluate probable errors within allowed tolerances. Extensive and comparative experimental results are provided to support the validity of the proposed phase-shift method. It is shown that smooth, fast, and reliable power reversal can be effectively achieved with the novel method, and there is no need to add snubbers into the circuit by virtue of transient ZVS.

ACS Style

Jian Yin; Jian Lu; Yitao Liu; Jianchun Peng; Hui Jiang. Novel Phase-Shift Method for Fast Power Reversal With Transient Zero Voltage Switching in a Bidirectional Dual Active Bridge DC–DC Converter. IEEE Transactions on Industrial Electronics 2020, 68, 8028 -8038.

AMA Style

Jian Yin, Jian Lu, Yitao Liu, Jianchun Peng, Hui Jiang. Novel Phase-Shift Method for Fast Power Reversal With Transient Zero Voltage Switching in a Bidirectional Dual Active Bridge DC–DC Converter. IEEE Transactions on Industrial Electronics. 2020; 68 (9):8028-8038.

Chicago/Turabian Style

Jian Yin; Jian Lu; Yitao Liu; Jianchun Peng; Hui Jiang. 2020. "Novel Phase-Shift Method for Fast Power Reversal With Transient Zero Voltage Switching in a Bidirectional Dual Active Bridge DC–DC Converter." IEEE Transactions on Industrial Electronics 68, no. 9: 8028-8038.

Journal article
Published: 09 June 2020 in IEEE Transactions on Power Electronics
Reads 0
Downloads 0

A day and night operational single-phase energy stored quasi-Z-source cascaded H-bridge (ES-qZS-CHB) inverter photovoltaic (PV) power system to achieve the active and reactive power control is proposed in this paper. The ES-qZS-CHB inverter PV power system usually employs the unity power factor control method to ensure the output current tracking the desired reference in phase with the grid voltage, combining with distributed maximum power point tracking (MPPT) to determine the values of shoot-through duty ratios Dn. These cannot operate at night because there is no PV power input. Meanwhile, as multiple combinations of Dn and modulation ratio Mn could achieve the same voltage gain at night operation, but which is optimal has not been addressed. This paper proposes a solution to address these issues. First, a comprehensive control scheme, which not only has the attractiveness of day and night operation but also shows the advantage of active and reactive power control simultaneously, is proposed; then, an optimization control method is proposed for night operational ES-qZS-CHB inverter to achieve optimal combination of Dn and Mn. Simulation and experimental results validate the day and night operational ES-qZS-CHB inverter and the proposed optimal control technique.

ACS Style

Weihua Liang; Yitao Liu; Jianchun Peng. A Day and Night Operational Quasi-Z Source Multilevel Grid-Tied PV Power System to Achieve Active and Reactive Power Control. IEEE Transactions on Power Electronics 2020, 36, 474 -492.

AMA Style

Weihua Liang, Yitao Liu, Jianchun Peng. A Day and Night Operational Quasi-Z Source Multilevel Grid-Tied PV Power System to Achieve Active and Reactive Power Control. IEEE Transactions on Power Electronics. 2020; 36 (1):474-492.

Chicago/Turabian Style

Weihua Liang; Yitao Liu; Jianchun Peng. 2020. "A Day and Night Operational Quasi-Z Source Multilevel Grid-Tied PV Power System to Achieve Active and Reactive Power Control." IEEE Transactions on Power Electronics 36, no. 1: 474-492.

Journal article
Published: 06 March 2020 in Energies
Reads 0
Downloads 0

A patented bidirectional power converter was studied as an interface to connect the DC-bus of driving inverter, battery energy storage (BES), and ultracapacitor (UC) to solve the problem that the driving motor damages the battery life during acceleration and deceleration in electric vehicles (EVs). The proposed concept was to adopt a multiport switch to control the power flow and achieve the different operating mode transitions for the better utilization of energy. In addition, in order to improve the conversion efficiency, the proposed converter used a coupled inductor and interleaved-pulse-width-modulation (IPWM) control to achieve a high voltage conversion ratio (i.e., bidirectional high step-up/down conversion characteristics). This study discussed the steady-state operation and characteristic analysis of the proposed converter. Finally, a 500 W power converter prototype with specifications of 72 V DC-bus, 24 V BES, and 48 V UC was built, and the feasibility was verified by simulation and experiment results. The highest efficiency points of the realized prototype were 97.4%, 95.5%, 97.2%, 97.1%, and 95.3% for the UC charge, battery charge, UC discharge, the dual-energy in series discharge, and battery discharge modes, respectively.

ACS Style

Ching-Ming Lai; Jiashen Teh; Yuan-Chih Lin; Yitao Liu. Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage. Energies 2020, 13, 1234 .

AMA Style

Ching-Ming Lai, Jiashen Teh, Yuan-Chih Lin, Yitao Liu. Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage. Energies. 2020; 13 (5):1234.

Chicago/Turabian Style

Ching-Ming Lai; Jiashen Teh; Yuan-Chih Lin; Yitao Liu. 2020. "Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage." Energies 13, no. 5: 1234.

Journal article
Published: 01 February 2020 in Energy
Reads 0
Downloads 0

Accurate and reliable quantification of uncertainty in wind power forecasting is critical to the economic operation and real time control of the electric power and energy system. To this end, this paper proposes a novel direct method for probabilistic wind power forecasting based on spiking neural network. In this method, a new forecasting framework is firstly formulated to simultaneously calculate the coverage probability and sharpness with associated confidence levels. Then, group search optimizer is introduced and re-designed to optimize the parameters of the forecasting framework and directly generate the prediction intervals, so that the prediction reliability and stability are ensured. The main advantage of the proposed probabilistic forecasting method is that it does not involve any distribution assumption of the prediction errors required by most existing forecasting methods. The wind power datasets from real wind farms in Belgium and China are used in the case studies. Traditional back-propagation neural network (BPNN), support vector machine (SVM) and extreme learning machine (ELM) are selected as the benchmarking algorithms. The simulation results show that the average coverage of the proposed method is improved by 72.0%, 54.9% and 51.3% respectively, when compared to BPNN, SVM and ELM. The improvement rates of sharpness index are 43.1%, 28.1% and 21.0%, respectively. These statistical results show that the proposed method outperforms BPNN, SVM and ELM in terms of forecasting accuracy, demonstrating that this method has high practical applications in real power systems.

ACS Style

Huaizhi Wang; Wenli Xue; Yitao Liu; Jianchun Peng; Hui Jiang. Probabilistic wind power forecasting based on spiking neural network. Energy 2020, 196, 117072 .

AMA Style

Huaizhi Wang, Wenli Xue, Yitao Liu, Jianchun Peng, Hui Jiang. Probabilistic wind power forecasting based on spiking neural network. Energy. 2020; 196 ():117072.

Chicago/Turabian Style

Huaizhi Wang; Wenli Xue; Yitao Liu; Jianchun Peng; Hui Jiang. 2020. "Probabilistic wind power forecasting based on spiking neural network." Energy 196, no. : 117072.

Journal article
Published: 29 November 2019 in Energies
Reads 0
Downloads 0

Short-circuit faults are the most critical failure mechanism in power converters. Among the various short-circuit protection schemes, desaturation protection is the most mature and widely used solution. Due to the lack of gate driver integrated circuit (IC) with desaturation protection for the silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (MOSFET), the conventional insulated gate bipolar transistor (IGBT) driver IC is normally used as these two devices have similar gate structure and driving mechanism. In this work, a gate driver with desaturation protection is designed for the 1.2-kV/30-A SiC MOSFET and silicon (Si) IGBT with the off-the-shelf driver IC. To further limit voltage-overshoot at the rapid turn-off transient, the active clamping circuit is introduced. Based on the experiments of switching characterization and short-circuit test, the SiC MOSFET shows faster switching speed, more serious electromagnetic interference (EMI) issue, lower switching loss (half), and higher short-circuit current (1.6 times) than the Si IGBT, even with a slower gate driver. Thus, a rapid response speed is required for the desaturation protection circuit of SiC MOSFET. Due to the long delay time of the existing desaturation protection scheme, it is technically difficult to design a sub- μ s protection circuit. In this work, an external current source is proposed to charge the blanking capacitor. A short-circuit time of 0.91 μ s is achieved with a reliable protection. Additionally, the peak current is reduced by 22%.

ACS Style

Shan Yin; Yingzhe Wu; Yitao Liu; Xuewei Pan. Comparative Design of Gate Drivers with Short-Circuit Protection Scheme for SiC MOSFET and Si IGBT. Energies 2019, 12, 4546 .

AMA Style

Shan Yin, Yingzhe Wu, Yitao Liu, Xuewei Pan. Comparative Design of Gate Drivers with Short-Circuit Protection Scheme for SiC MOSFET and Si IGBT. Energies. 2019; 12 (23):4546.

Chicago/Turabian Style

Shan Yin; Yingzhe Wu; Yitao Liu; Xuewei Pan. 2019. "Comparative Design of Gate Drivers with Short-Circuit Protection Scheme for SiC MOSFET and Si IGBT." Energies 12, no. 23: 4546.

Journal article
Published: 06 September 2019 in IEEE Transactions on Transportation Electrification
Reads 0
Downloads 0
ACS Style

Benfei Wang; Xinan Zhang; Ujjal Manandhar; Hoay Beng Gooi; Yitao Liu; Xiaojun Tan. Bidirectional Three-Level Cascaded Converter With Deadbeat Control for HESS in Solar-Assisted Electric Vehicles. IEEE Transactions on Transportation Electrification 2019, 5, 1190 -1201.

AMA Style

Benfei Wang, Xinan Zhang, Ujjal Manandhar, Hoay Beng Gooi, Yitao Liu, Xiaojun Tan. Bidirectional Three-Level Cascaded Converter With Deadbeat Control for HESS in Solar-Assisted Electric Vehicles. IEEE Transactions on Transportation Electrification. 2019; 5 (4):1190-1201.

Chicago/Turabian Style

Benfei Wang; Xinan Zhang; Ujjal Manandhar; Hoay Beng Gooi; Yitao Liu; Xiaojun Tan. 2019. "Bidirectional Three-Level Cascaded Converter With Deadbeat Control for HESS in Solar-Assisted Electric Vehicles." IEEE Transactions on Transportation Electrification 5, no. 4: 1190-1201.

Journal article
Published: 04 September 2019 in Energy
Reads 0
Downloads 0

Information and communication technologies (ICTs) introduce many Internet-based entry points that pose potential risks to cyber physical energy system (CPES). Therefore, it is significant to enhance the cybersecurity of CPES from cyber-attacks. In this paper, a new dynamic attack model that takes into account the dynamic characteristics of energy systems is developed based on traditional false data injection attack. The proposed attack model can be used to describe the attack behaviors of a malicious attacker over time. Then, we propose a new generalized interval state estimator to quantify the normal fluctuations of all CPES state variables. In this state estimator, the Unscented Kalman Filter (UKF) is used to predict the real-time operating level of the state variables. Copula theory is introduced to model the prediction uncertainty of sustainable energy and load as a set of conditional quantiles. We then model the normal fluctuation range of each CPES state as a bilevel nonlinear programming problem based on the worst case analysis. Consequently, an anomaly detection method is developed to detect whether there is an attack or not in the CPES. In this method, any state variable that falls outside its estimated interval is considered an abnormal point. Finally, the feasibility of the dynamic attack model and the effectiveness of the anomaly detection method have been extensively validated on test systems in power and energy society of the Institute of Electrical and Electronics Engineers (IEEE).

ACS Style

Huaizhi Wang; Anjian Meng; Yitao Liu; XueQian Fu; Guangzhong Cao. Unscented Kalman Filter based interval state estimation of cyber physical energy system for detection of dynamic attack. Energy 2019, 188, 116036 .

AMA Style

Huaizhi Wang, Anjian Meng, Yitao Liu, XueQian Fu, Guangzhong Cao. Unscented Kalman Filter based interval state estimation of cyber physical energy system for detection of dynamic attack. Energy. 2019; 188 ():116036.

Chicago/Turabian Style

Huaizhi Wang; Anjian Meng; Yitao Liu; XueQian Fu; Guangzhong Cao. 2019. "Unscented Kalman Filter based interval state estimation of cyber physical energy system for detection of dynamic attack." Energy 188, no. : 116036.

Journal article
Published: 27 August 2019 in IEEE Journal of Emerging and Selected Topics in Power Electronics
Reads 0
Downloads 0

Harmonic and electromagnetic interference (EMI) filters are two important parts in the grid-connected inverter for the harmonic and EMI noise suppression. This paper investigates the combined magnetic integration of the harmonic and EMI filters with the volume and weight reduction, which is defined as the integrated LCL-EMI filter in this paper. Both common-mode (CM) and differential-mode (DM) models of the integrated inductor with EE-type magnetic core are built and analyzed. By designing the air gap of the center leg and arranging the windings properly, the distribution of magnetic flux on the magnetic branch can be controlled. As a result, harmonic inductors and a CM inductor can be effectively designed in the center leg and side leg, respectively. A symmetrical LCL filter is designed instead of the traditional asymmetrical structure with an integrated magnetic core. The current harmonic distortion analysis and EMI measurement results based on simulation and experiment results verify the effectiveness of the proposed integration method in the silicon carbide (SiC) MOSFET based grid-connected inverter. Moreover, weight and volume comparisons between the integrated inductor and the traditional discrete inductors also reflect the superiority of the magnetic integrated LCL-EMI filter.

ACS Style

Shiqi Jiang; Yitao Liu; Zhaozhao Mei; Jianchun Peng; Ching-Ming Lai. A Magnetic Integrated LCL–EMI Filter for a Single-Phase SiC-MOSFET Grid-Connected Inverter. IEEE Journal of Emerging and Selected Topics in Power Electronics 2019, 8, 601 -617.

AMA Style

Shiqi Jiang, Yitao Liu, Zhaozhao Mei, Jianchun Peng, Ching-Ming Lai. A Magnetic Integrated LCL–EMI Filter for a Single-Phase SiC-MOSFET Grid-Connected Inverter. IEEE Journal of Emerging and Selected Topics in Power Electronics. 2019; 8 (1):601-617.

Chicago/Turabian Style

Shiqi Jiang; Yitao Liu; Zhaozhao Mei; Jianchun Peng; Ching-Ming Lai. 2019. "A Magnetic Integrated LCL–EMI Filter for a Single-Phase SiC-MOSFET Grid-Connected Inverter." IEEE Journal of Emerging and Selected Topics in Power Electronics 8, no. 1: 601-617.

Journal article
Published: 19 August 2019 in IEEE Transactions on Energy Conversion
Reads 0
Downloads 0

A new three-level bidirectional DC-DC converter configuration for the battery and supercapacitor (SC) energy storage systems in DC microgrids is presented in this paper. The PI-based control method is implemented to operate the proposed converter with hybrid energy storage system. Furthermore, joint control is utilized to obtain rapid DC-link voltage restoration and effective power sharing between battery and SC based on their respective characteristics. The system operating principle, controller design, stability analysis, simulation studies and experimental studies are presented in this paper. The proposed three-level bidirectional DC-DC converter configuration can effectively integrate the battery and SC with the bidirectional power flow. The proposed control method provides the effective participation of the SC system which reduces the stress on the battery system. The presented converter configuration is effective in reducing the stress on the power semiconductors and provides better performance with smaller passive components. The experimental platform is built to test and validate the three-level bidirectional DC-DC converter and proposed control method for the HESS.

ACS Style

Ujjal Manandhar; Benfei Wang; Xinan Zhang; Gooi Hoay Beng; Yitao Liu; Abhisek Ukil; Hoay Beng Gooi. Joint Control of Three-Level DC–DC Converter Interfaced Hybrid Energy Storage System in DC Microgrids. IEEE Transactions on Energy Conversion 2019, 34, 2248 -2257.

AMA Style

Ujjal Manandhar, Benfei Wang, Xinan Zhang, Gooi Hoay Beng, Yitao Liu, Abhisek Ukil, Hoay Beng Gooi. Joint Control of Three-Level DC–DC Converter Interfaced Hybrid Energy Storage System in DC Microgrids. IEEE Transactions on Energy Conversion. 2019; 34 (4):2248-2257.

Chicago/Turabian Style

Ujjal Manandhar; Benfei Wang; Xinan Zhang; Gooi Hoay Beng; Yitao Liu; Abhisek Ukil; Hoay Beng Gooi. 2019. "Joint Control of Three-Level DC–DC Converter Interfaced Hybrid Energy Storage System in DC Microgrids." IEEE Transactions on Energy Conversion 34, no. 4: 2248-2257.

Journal article
Published: 31 July 2019 in IEEE Transactions on Power Electronics
Reads 0
Downloads 0

Renewable energy generations have been attracting sustained attentions in academic and industry. Current-fed isolated bidirectional DC/DC converters (CF-IBDCs) are widely adopted in low voltage high current applications such as solar photovoltaic, fuel cell and energy storage. This paper gives an overview and a comprehensive comparative evaluation of CF-IBDCs. The active clamped, dual half-bridge, L-L type dual active bridge, resonant type, naturally clamped and other type topologies of CF-IBDCs are investigated, analyzed and compared regarding their circuit topological structures, characteristics, modulation methods and soft-switching technologies. In addition, component cost models and loss models of converters are deduced and presented. On this basis, quantitative and comprehensive performance comparison of six typical CF-IBDC topologies selected from each type are conducted in terms of costs, losses, weight, volume and power density for the given system specifications and design constraints.

ACS Style

Xuewei Pan; Hongqi Li; Yitao Liu; Tianyang Zhao; Chenchen Ju; Akshay Kumar Rathore Gae. An Overview and Comprehensive Comparative Evaluation of Current-Fed-Isolated-Bidirectional DC/DC Converter. IEEE Transactions on Power Electronics 2019, 35, 2737 -2763.

AMA Style

Xuewei Pan, Hongqi Li, Yitao Liu, Tianyang Zhao, Chenchen Ju, Akshay Kumar Rathore Gae. An Overview and Comprehensive Comparative Evaluation of Current-Fed-Isolated-Bidirectional DC/DC Converter. IEEE Transactions on Power Electronics. 2019; 35 (3):2737-2763.

Chicago/Turabian Style

Xuewei Pan; Hongqi Li; Yitao Liu; Tianyang Zhao; Chenchen Ju; Akshay Kumar Rathore Gae. 2019. "An Overview and Comprehensive Comparative Evaluation of Current-Fed-Isolated-Bidirectional DC/DC Converter." IEEE Transactions on Power Electronics 35, no. 3: 2737-2763.

Journal article
Published: 15 May 2019 in IEEE Journal of Emerging and Selected Topics in Power Electronics
Reads 0
Downloads 0

The conventional Z-Source inverter (ZSI) has the following disadvantages: unidirectional power flow, high start-up inrush current, presence of undesirable mode operation, and low boost factor. To solve aforementioned shortcomings, an enhanced-boost bi-directional Quasi-ZSI (QZSI) with novel active switched inductor (SL) cells (named as Active-SLs QZSI) is proposed. The proposed active SL cell replaces three diodes in the conventional SL cell of the QZSI with two capacitors and one active switch, thus allowing bi-directional power flow and achieving higher boost factor. Besides, the Z-Source Network (ZSN) diode is also replaced by an active switch. Compared with existing ZSIs, the proposed Active-SLs QZSI has less current stress of ZSN, higher efficiency and higher boost factor. A modified Space Vector Modulation (MSVM) is introduced to reduce the switching frequency of active switches of ZSN. Both simulation and experimental results validate theoretical analysis of the proposed Active-SLs QZSI.

ACS Style

Xuewei Pan; Zhicong Pang; Yitao Liu; Shan Yin; Chenchen Ju. Enhanced-Boost Bidirectional Quasi-Z-Source Inverter With Novel Active Switched Inductor Cells. IEEE Journal of Emerging and Selected Topics in Power Electronics 2019, 8, 3041 -3055.

AMA Style

Xuewei Pan, Zhicong Pang, Yitao Liu, Shan Yin, Chenchen Ju. Enhanced-Boost Bidirectional Quasi-Z-Source Inverter With Novel Active Switched Inductor Cells. IEEE Journal of Emerging and Selected Topics in Power Electronics. 2019; 8 (3):3041-3055.

Chicago/Turabian Style

Xuewei Pan; Zhicong Pang; Yitao Liu; Shan Yin; Chenchen Ju. 2019. "Enhanced-Boost Bidirectional Quasi-Z-Source Inverter With Novel Active Switched Inductor Cells." IEEE Journal of Emerging and Selected Topics in Power Electronics 8, no. 3: 3041-3055.

Journal article
Published: 09 May 2019 in IEEE Transactions on Power Electronics
Reads 0
Downloads 0

A magnetic integration method of single- and multi-stage electromagnetic interference (EMI) filters is presented. Common-mode (CM) and differential-mode (DM) inductors are integrated into a single magnetic core unit to significantly reduce the filter volume. A 500 W Silicon Carbon (SiC) single-phase inverter is used as an experimental platform. The magnetic integration model is designed, and the magnetic circuit analysis is conducted in a simulation to ensure that the core will not reach magnetic saturation under full load conditions. The feasibility of the proposed method is verified by an EMI test in a simulation and an experiment. Compared with a traditional discrete passive EMI filter (DPEF), the proposed integrated EMI filters can reduce 40% of the total volume and 69% of the inductor volume in integrated single-stage EMI filter (ISSEF) with satisfactory EMI suppression ability. Although the weight of integrated inductor of integrated multi-stage EMI filter (IMSEF) has 23.8% increment, the IMSEF shows a better EMI suppression ability and 4.6% inductor volume reduction.

ACS Style

Yitao Liu; Shiqi Jiang; Weihua Liang; Huaizhi Wang; Jianchun Peng. Modeling and Design of the Magnetic Integration of Single- and Multi-Stage EMI Filters. IEEE Transactions on Power Electronics 2019, 35, 276 -288.

AMA Style

Yitao Liu, Shiqi Jiang, Weihua Liang, Huaizhi Wang, Jianchun Peng. Modeling and Design of the Magnetic Integration of Single- and Multi-Stage EMI Filters. IEEE Transactions on Power Electronics. 2019; 35 (1):276-288.

Chicago/Turabian Style

Yitao Liu; Shiqi Jiang; Weihua Liang; Huaizhi Wang; Jianchun Peng. 2019. "Modeling and Design of the Magnetic Integration of Single- and Multi-Stage EMI Filters." IEEE Transactions on Power Electronics 35, no. 1: 276-288.

Journal article
Published: 13 February 2019 in IEEE Transactions on Vehicular Technology
Reads 0
Downloads 0
ACS Style

Yitao Liu; Dianheng Jin; Shiqi Jiang; Weihua Liang; Jianchun Peng; Ching-Ming Lai. An Active Damping Control Method for the LLCL Filter-Based SiC MOSFET Grid-Connected Inverter in Vehicle-to-Grid Application. IEEE Transactions on Vehicular Technology 2019, 68, 3411 -3423.

AMA Style

Yitao Liu, Dianheng Jin, Shiqi Jiang, Weihua Liang, Jianchun Peng, Ching-Ming Lai. An Active Damping Control Method for the LLCL Filter-Based SiC MOSFET Grid-Connected Inverter in Vehicle-to-Grid Application. IEEE Transactions on Vehicular Technology. 2019; 68 (4):3411-3423.

Chicago/Turabian Style

Yitao Liu; Dianheng Jin; Shiqi Jiang; Weihua Liang; Jianchun Peng; Ching-Ming Lai. 2019. "An Active Damping Control Method for the LLCL Filter-Based SiC MOSFET Grid-Connected Inverter in Vehicle-to-Grid Application." IEEE Transactions on Vehicular Technology 68, no. 4: 3411-3423.

Research article
Published: 14 January 2019 in IET Power Electronics
Reads 0
Downloads 0

Grid-connected inverters are essential equipment for DC–AC energy conversion between renewable energy generation and power grids, and their performance directly affects the stability of the operation of the power grid. Compared to the traditional L or LC filter, LCL filter is widely used in the grid-connected inverter due to its harmonic attenuation performance and system stability. Because of the requirements for higher switching frequency to increase the power density and reduce the cost of the inverter. Compared to the traditional silicon (Si) insulated gate bipolar transistor (IGBT) power device, the silicon carbide (SiC) metal–oxide–semiconductor field-effect transistor (MOSFET) has shown apparent advantages in high-power density inverters with a high switching frequency. This study first analyses and compares the suppression effects of passive damping methods on the resonance peak of the LCL filter; then, a double-current closed-loop control strategy as the active damping control is applied in the LCL filter three-phase grid-connected inverter; finally, the experimental platforms of IGBT inverter and SiC MOSFET inverter are built, and the filtering performances of the two inverters are compared. The experimental results show that the double-closed-loop control method significantly reduces the system harmonics and confirms the feasibility of the control strategy.

ACS Style

Yitao Liu; Shiqi Jiang; Dianheng Jin; Jianchun Peng. Performance comparison of Si IGBT and SiC MOSFET power devices based LCL three‐phase inverter with double closed‐loop control. IET Power Electronics 2019, 12, 322 -329.

AMA Style

Yitao Liu, Shiqi Jiang, Dianheng Jin, Jianchun Peng. Performance comparison of Si IGBT and SiC MOSFET power devices based LCL three‐phase inverter with double closed‐loop control. IET Power Electronics. 2019; 12 (2):322-329.

Chicago/Turabian Style

Yitao Liu; Shiqi Jiang; Dianheng Jin; Jianchun Peng. 2019. "Performance comparison of Si IGBT and SiC MOSFET power devices based LCL three‐phase inverter with double closed‐loop control." IET Power Electronics 12, no. 2: 322-329.

Conference paper
Published: 01 November 2018 in 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)
Reads 0
Downloads 0

The mathematical model of three-phase LCL inverter has coupling term in dq coordinate system. At the same time, the traditional proportional integrate (PI) controller can only realize the no steady-state error control of the sinusoidal AC current in dq coordinate system. This requires highly accurate phase angles and complex coordinate transformations. This paper proposes a control strategy which uses the Quasi-proportional resonant (QPR) controller in the αβ coordinate system. Using the capacitor current as the inner loop realizes active damping and inhibits the resonance peak of LCL filter. The grid-connected current external loop control sine AC current non-static tracking. Design capacitance current feedback coefficient, the proportional coefficient of QPR controller and resonance gain coefficient with frequency domain analysis and zero-pole assignment. The parameter design method and the effectiveness of the control strategy are proved in the simulation and experiment.

ACS Style

Zuxun Huang; Yitao Liu; Huaizhi Wang; Guibin Wang; Jian Yin; Jianchun Peng. Dual Closed-Loop Control Strategy of LCL Filter Grid-Connected Inverter Based on the αβ Coordinate System. 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) 2018, 1 -6.

AMA Style

Zuxun Huang, Yitao Liu, Huaizhi Wang, Guibin Wang, Jian Yin, Jianchun Peng. Dual Closed-Loop Control Strategy of LCL Filter Grid-Connected Inverter Based on the αβ Coordinate System. 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC). 2018; ():1-6.

Chicago/Turabian Style

Zuxun Huang; Yitao Liu; Huaizhi Wang; Guibin Wang; Jian Yin; Jianchun Peng. 2018. "Dual Closed-Loop Control Strategy of LCL Filter Grid-Connected Inverter Based on the αβ Coordinate System." 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) , no. : 1-6.

Conference paper
Published: 01 November 2018 in 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)
Reads 0
Downloads 0

This paper presents an effective design method of the electromagnetic interference (EMI) based on single-phase SiC MOSFET inverter. To ensure the design is targeted and effective, the equivalent noise source impedance of common mode (CM) EMI and differential mode (DM) EMI has been measured and calculated at some specific frequencies according to proper model. Then the parameters of CM part and DM part can be respectively design based on the source impedance. The EMI attenuation ability of the filter designed by this method has been compared to a traditional one in simulation and experiments. The simulation and experiment results have verified the effectiveness of the proposed method.

ACS Style

Shiqi Jiang; Yitao Liu; Huaizhi Wang; Guibin Wang; Jian Yan; Jianchun Peng. Effective EMI Filter Design Method of Single-phase Inverter Based on Noise Source Impedance. 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) 2018, 1 -6.

AMA Style

Shiqi Jiang, Yitao Liu, Huaizhi Wang, Guibin Wang, Jian Yan, Jianchun Peng. Effective EMI Filter Design Method of Single-phase Inverter Based on Noise Source Impedance. 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC). 2018; ():1-6.

Chicago/Turabian Style

Shiqi Jiang; Yitao Liu; Huaizhi Wang; Guibin Wang; Jian Yan; Jianchun Peng. 2018. "Effective EMI Filter Design Method of Single-phase Inverter Based on Noise Source Impedance." 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) , no. : 1-6.