A multikilowatt polyphase AC/DC converter with reversible power flow and without passive low frequency filters

1979 IEEE Power Electronics Specialists Conference Pub Date : 1979-06-18 DOI:10.1109/PESC.1979.7081058

F. Schwarz, Willem L. Moize de Chateleux

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引用次数: 10

Abstract

An efficient ac to dc converter with reversible power flow, which embodies an active, low frequency filter, is presented. A non-dissipatively controlled, nonlinear resonant oscillator is used to extract electric energy directly from the phase pairs of the polyphase supply line and to generate a mixed amplitude and frequency modulated carrier. The demodulated carrier and the therefrom resulting 20 kHz pulse train produces, after being processed by a high frequency filter, an active, low frequency filtering effect for attenuation of the 360 Hz ripple of the apparently "rectified" three phase supply line.The system is governed by means of a pulse area control mechanism with a verified response time of one 10 kHz cycle, or 100 micro-seconds. The customary dc link between the three phase line and the converter's 20 kHz pulse processing mechanism in the form of a common rectifier-filter is completely eliminated. Data obtained from the test of a 3 kW feasibility model are analyzed in support of presentation of the significant aspects of design and technology.

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具有可逆潮流的多千瓦多相AC/DC变换器，无被动低频滤波器

提出了一种具有可逆潮流的高效交直流变换器，该变换器采用有源低频滤波器。采用非耗散控制的非线性谐振振荡器，直接从多相供电线路的相位对中提取电能，产生调幅调频混合载波。解调载波和由此产生的20khz脉冲序列在经过高频滤波器处理后，产生有源低频滤波效果，用于衰减明显“整流”三相供电线路的360 Hz纹波。该系统由脉冲面积控制机制控制，验证响应时间为一个10khz周期，或100微秒。在三相线和转换器的20khz脉冲处理机制之间的惯常直流链路以普通整流滤波器的形式被完全消除。从3kw可行性模型测试中获得的数据进行了分析，以支持设计和技术的重要方面。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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1979 IEEE Power Electronics Specialists Conference

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