Reactive Power Control for Bidirectional Isolated High-Frequency Link Converter

2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) Pub Date : 2022-06-22 DOI:10.1109/speedam53979.2022.9842131

Pietro Emiliani, A. Blinov, D. Peftitsis, A. Giannakis, D. Vinnikov

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Abstract

Single stage dc-ac high-frequency link matrix converters (HFLC) are suitable for numerous applications where dc-ac conversion is required along with voltage matching and/or galvanic isolation. However, when bidirectional and reactive power processing is required, HFLCs lack effective modulation methods that would allow for operation without additional circuits or reduced performance. This paper presents a phase-shift modulation (PSM) method suited for bidirectional operation of HFLC. The proposed modulation can be used for both rectifier and inverter operating modes, with control over the power factor. Zero voltage switching (ZVS) of the dc-side switches and zero current switching (ZCS) of the ac-side switches is achieved in all operating conditions. Furthermore, two switches operate at line frequency, eliminating their switching loss. There is no need for auxiliary circuits and the same commutation principles are used in both power conversion directions. The modulation was verified on a PSIM simulation model

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双向隔离高频链路变换器无功功率控制

单级直流-交流高频链路矩阵转换器(HFLC)适用于需要直流-交流转换以及电压匹配和/或电流隔离的众多应用。然而，当需要双向和无功功率处理时，hflc缺乏有效的调制方法，无法在不增加电路或降低性能的情况下运行。提出了一种适用于HFLC双向工作的相移调制(PSM)方法。所提出的调制可用于整流和逆变两种工作模式，并可控制功率因数。直流侧开关的零电压开关(ZVS)和交流侧开关的零电流开关(ZCS)在所有工作条件下均可实现。此外，两个开关在线频率上工作，消除了它们的开关损耗。不需要辅助电路，并且在两个功率转换方向上使用相同的整流原理。在PSIM仿真模型上验证了调制效果

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2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)

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