期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 35, 期 4, 页码 4157-4167出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2019.2933810
关键词
Switches; Inductors; Reactive power; Bridge circuits; Pulse width modulation; Reliability; Modulation strategy; power reversion; single-stage isolated ac-dc converter; voltage spike
资金
- National Natural Science Foundation of China [51877050]
- Natural Science Foundation of Heilongjiang Province, China [E2016031]
In this article, an improved modulation strategy for the single-phase single-stage isolated bidirectional ac-dc converter is proposed. The modulation of ac side cycloconverter is based on the unipolar idea to reduce the switching quantity and the ac side current ripple and provide the bidirectional current flow path. The dc side H-bridge converter is driven by the pulsewidth modulation signals cooperatively to speed up the transformer current and thus to eliminate the voltage spike. Furthermore, the power reversion zone (PRZ) of the converter is verified. The action of the proposed modulation strategy in PRZ is analyzed for the first time. It reveals that the reverse current overshoot is caused in ac-to-dc direction and the voltage spike is caused in dc-to-ac direction. An online switching scheme of the proposed modulation strategies in two power directions is proposed to solve these problems. The detailed experimental results verify the correctness and reliability of the proposed modulation strategy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据