A Hybrid Resonant ZCS PWM Converter for Renewable Energy Sources Connecting to MVDC Collection System

作者：Ning, Guangfu; Chen, Wu^*

来源：IEEE Transactions on Industrial Electronics, 2018, 65(10): 7911-7920.

DOI：10.1109/TIE.2018.2801783

• High power
• insulated-gate bipolar transistors (IGBTs)
• resonant
• zero-current switching (ZCS)

To relieve the tail current effect of insulatedgate bipolar transistors which are preferred in high-power applications, an approach of zero-current-switching (ZCS) for main switches is presented in this paper. Different from the large turn-OFF current of the main switches of the conventional zero-voltage and zero-current-switching (ZVZCS) full-bridge (FB) dc-dc converter, small turn-OFF current of auxiliary circuit is introduced to achieve ZCS for main switches, where the auxiliary circuit also delivers a small portion power and can realize ZVZCS. Hence, high efficiency can be achieved with the switching loss lowered remarkably. Furthermore, a hybrid resonant FB dc-dc converter is proposed, the operation principle and parameters design rules of which are analyzed in detail. A 200 V-2 kV/3 kW experimental platform has been built to verify the feasibility and performance of the proposed ZCS approach, as well as the proposed converter.

• 出版日期2018-10
• 单位东南大学