高频串联谐振直流链路功率转换

Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI:10.1109/IAS.1988.25149

Y. Murai, T. Lipo

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引用次数: 131

摘要

提出了一种交流/直流转换方案，该方案消除了对自整流器件的需要，只需12个晶闸管即可实现全双桥交流到交流的功率转换。该系统利用AC/DC和DC/AC转换器之间的串联谐振直流链路。这种串联谐振方案实际上是并联直流谐振变换器的对偶。直流谐振电路本质上可以看作是一个整流电路，它通过提供必要的零电流瞬间来确保所有十二个晶闸管的关断。与传统的高功率变换器相比，通过使用高频脉冲密度调制，可以在输入和输出处获得显着改善的正弦电流波形。

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High frequency series resonant DC link power conversion

An AC/DC conversion scheme is presented which eliminates the need for self-commutated devices and requires only 12 thyristors for full double bridge AC to AC power conversion. The system utilizes a series resonant DC link between the AC/DC and DC/AC converters. This series resonant scheme is, in effect, the dual of the parallel DC resonant converter. The DC resonant circuit can be essentially considered as a commutating circuit which ensures turn-off of all twelve thyristors by providing the necessary zero-current instants. A significantly improved sinusoidal current waveform can be obtained at both the input and output compared to conventional high-power converters by the use of high-frequency pulse density modulation.<>

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Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting

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