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Title: | A low-harmonic control method of bidirectional three-phase Z-source converters for vehicle-to-grid applications | Authors: | Xu, W Chan, KW Or, SW Ho, SL Liu, M |
Issue Date: | Jun-2020 | Source: | IEEE transactions on transportation electrification, June 2020, v. 6, no. 2, 9050804, p. 464-477 | Abstract: | 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. | Keywords: | Bidirectional converter Closed-loop control Shoot-through states Voltage harmonics Z-source converter |
Publisher: | Institute of Electrical and Electronics Engineers | Journal: | IEEE transactions on transportation electrification | EISSN: | 2332-7782 | DOI: | 10.1109/TTE.2020.2984420 | Rights: | © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The following publication W. Xu, K. W. Chan, S. W. Or, S. L. Ho and M. Liu, "A Low-Harmonic Control Method of Bidirectional Three-Phase Z-Source Converters for Vehicle-to-Grid Applications," in IEEE Transactions on Transportation Electrification, vol. 6, no. 2, pp. 464-477, June 2020 is available at https://doi.org/10.1109/TTE.2020.2984420 |
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Xu_Low-Harmonic_Control_Method.pdf | Pre-Published version | 6.12 MB | Adobe PDF | View/Open |
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