TY - JOUR
T1 - A Low-Harmonic Control Method of Bidirectional Three-Phase Z-Source Converters for Vehicle-to-Grid Applications
AU - Xu, Wenzheng
AU - Chan, Ka Wing
AU - Or, Siu Wing
AU - Ho, Siu Lau
AU - Liu, Ming
N1 - Funding Information:
Manuscript received October 29, 2019; revised January 31, 2020; accepted March 14, 2020. Date of publication March 30, 2020; date of current version June 19, 2020. This work was supported in part by the Research Grants Council of the Hong Kong Special Administrative Region (HKSAR) Government under Grant R5020-18 and in part by the Innovation and Technology Commission of the HKSAR Government to the Hong Kong Branch of National Rail Transit Electrification and Automation Engineering Technology Research Center under Grant K-BBY1. (Corresponding author: Siu Wing Or.) Wenzheng Xu, Siu Wing Or, Siu Lau Ho, and Ming Liu are with the Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China, and also with the Hong Kong Branch of National Rail Transit Electrification and Automation Engineering Technology Research Center, Hong Kong, China (e-mail: [email protected]; [email protected]; [email protected]; [email protected]).
Publisher Copyright:
© 2015 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/6
Y1 - 2020/6
N2 - Three-phase Z -source inverters provide a solution of voltage boosting by a single-stage topology. They are also capable of bidirectional operation as rectifiers, thus have great potential for applications in the field of transportation electrification such as vehicle-to-grid (V2G) chargers. In this article, three new modulation schemes for three-phase Z -source converters are proposed and investigated. The best performed one is further developed to a closed-loop proportional-integral (PI) control method. Although the voltage conversion ratio is flexible, the output voltage total harmonics distortion (THD) is below 3% within the voltage ratio range 0.5-2.5. The effectiveness of the proposed method has been fully validated in MATLAB/Simulink simulations and RT-Lab hardware-in-loop (HIL) experiments based on the real-time simulator OPAL-RT OP4510. Compared to existing control methods, the proposed one performs better with reduced harmonics, flexible voltage gain, and simpler control algorithm.
AB - Three-phase Z -source inverters provide a solution of voltage boosting by a single-stage topology. They are also capable of bidirectional operation as rectifiers, thus have great potential for applications in the field of transportation electrification such as vehicle-to-grid (V2G) chargers. In this article, three new modulation schemes for three-phase Z -source converters are proposed and investigated. The best performed one is further developed to a closed-loop proportional-integral (PI) control method. Although the voltage conversion ratio is flexible, the output voltage total harmonics distortion (THD) is below 3% within the voltage ratio range 0.5-2.5. The effectiveness of the proposed method has been fully validated in MATLAB/Simulink simulations and RT-Lab hardware-in-loop (HIL) experiments based on the real-time simulator OPAL-RT OP4510. Compared to existing control methods, the proposed one performs better with reduced harmonics, flexible voltage gain, and simpler control algorithm.
KW - Bidirectional converter
KW - closed-loop control
KW - shoot-through states
KW - voltage harmonics
KW - Z-source converter
UR - http://www.scopus.com/inward/record.url?scp=85091081608&partnerID=8YFLogxK
U2 - 10.1109/TTE.2020.2984420
DO - 10.1109/TTE.2020.2984420
M3 - Journal article
AN - SCOPUS:85091081608
SN - 2332-7782
VL - 6
SP - 464
EP - 477
JO - IEEE Transactions on Transportation Electrification
JF - IEEE Transactions on Transportation Electrification
IS - 2
M1 - 9050804
ER -