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首页> 外文期刊>IEE Proceedings. Part B >Novel four-bridge PWM static VAr compensator
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Novel four-bridge PWM static VAr compensator

机译：新型四桥PWM静态VAr补偿器

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摘要

A novel four-bridge PWM static VAr compensator is presented. Theoretical analysis shows that the harmonic pairs of [(2k + l)fs ± f] and [(4k + 2)fs ±f)] generated in each bridge are effectively eliminated through appropriate phase shift control. To satisfy the same 5'K, total harmonic distortion requirement, this new compensator can work at 200Hz, which is much lower than the previously reported 1.9kHz of a single-bridge PWM static VAr compensator. The efficiency is increased and reliability is enhanced. The fairly low switching frequency and multiple- bridge structure facilitate its use in a high-power VAr compensator since GTO can be employed as the power switch. Theoretical analysis was verified through simulations and experimental results.
机译：提出了一种新颖的四桥PWM静态VAr补偿器。理论分析表明，通过适当的相移控制，有效消除了每个桥中产生的[（2k + l）fs±f]和[（4k + 2）fs±f）]谐波对。为了满足相同的5'K总谐波失真要求，这种新型补偿器可以在200Hz下工作，该频率远低于先前报道的单桥PWM静态VAr补偿器的1.9kHz。效率提高，可靠性提高。由于GTO可以用作电源开关，因此相当低的开关频率和多桥结构有助于将其用于大功率VAr补偿器。通过仿真和实验结果验证了理论分析。

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