Zeta模式三电平AC/AC转换器

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI:10.1109/APEC.2009.4802919

Qinglong Zhong, Lei Li

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引用次数: 3

摘要

提出了一种Zeta模式三电平AC/AC变换器，该变换器可用于高输入电压和高功率应用，也可用于需要高质量正弦输出电压的应用。实现了输出滤波器前的三电平电压波形，可以得到更好的频谱，减小了滤波器的体积。与非隔离和低、中频隔离的交-直流-交变换器相比，它是单级变换器。与Buck非隔离AC/AC变换器相比，它可以实现降压和升压输出。其功率开关的电压应力低于两电平Zeta AC/AC变换器。变换器采用非互补控制策略，可以使变换器在不同工作模式之间平稳切换，不产生电压尖峰。它还实现了双向潮流的非互补控制，因此该变换器适用于各种负载。

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Zeta Mode Three-level AC/AC Converter

A Zeta mode three-level AC/AC converter is proposed, the converter is available in high input voltages as well as in high power applications, and it also intended for use in applications where a sinusoidal output voltage of high quality is needed. It realizes the three-level voltage waveforms before output filter, which can get a better spectrum and reduce bulk of the filter. Compared with non-isolation and low or middle frequency isolation AC-DC-AC converter, it is single stage. And compared with Buck non-isolation AC/AC converter, it can realize buck and boost output voltage. The voltage stresses of its power switches are lower than two-level Zeta AC/AC converter. A non-complementary control strategy the converter adopts can make the converter switch smoothly between different operation modes without any voltage spike. It also realizes the non-complementary control in bidirectional power flows, so the converter is suitable to different kinds of loads.

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来源期刊

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition

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