期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 38, 期 12, 页码 14930-14941出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2023.3311401
关键词
Synchronization; Inverters; Attenuation; Wireless communication; Inductors; Switches; Topology; Power grids; Control synchronization; direct digital control; division-summation (D-Sigma) process; grid connection; hybrid-frequency parallel converters; three-phase three-wire (3P3W) inverters
This article discusses an extension of the hybrid-frequency parallel inverter system belonging to wide-bandgap/silicon hybrid family. The system consists of two inverters connected in parallel, with the low-frequency high-power inverter achieving high power output and the high-frequency low-power inverter improving output current quality through ripple attenuation. The article presents the design and implementation of a three-phase three-wire topology and introduces ripple compensation models and a wireless carrier synchronization algorithm.
In this article, an extension of the hybrid-frequency parallel inverter system (HbFPIS) belonging to wide-bandgap/silicon (WBG/Si) hybrid family is discussed. HbFPIS contains two inverters connected in parallel, each having a specific function. The low-frequency high-power inverter's primary function is to achieve high power output with low-frequency modulation. The high-frequency low-power inverter, having a high dynamic response, is used to improve output current quality by ripple attenuation. In this article, three-phase three-wire (3P3W) HbFPIS topology is designed and implemented. The ripple compensation in 3P3W HbFPIS topology involves ripple models presented in this article. A wireless carrier synchronization algorithm based on ripple modeling is implemented, resulting in autonomy and increased reliability of the parallel modules. Simulated and experimental results from 20-kVA grid-connected 3P3W HbFPIS have confirmed the analysis and discussion.
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