基于最优PWM策略的三相电流型PFC变换器无差拍控制方案

Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475) Pub Date : 1999-07-27 DOI:10.1109/PEDS.1999.794611

Y. Feng, Y. Konishi, M. Nakaoka

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引用次数: 4

摘要

为改善三相电流型PFC功率变换器的动态性能，提出了一种采用最优PWM模式的无差拍控制方法。为了改善该变换器的公用侧电流THD特性，介绍了在低开关频率条件下可行的大容量应用的最佳PWM模式。通过使用为测量变量提供数字滤波功能的移动平均，可以去除载波频率的纹波分量。本文提出的电流馈电三相PWM变换器的最优PWM无差拍控制方案可成功地用于改善市电线路电流的瞬态响应。仿真结果表明，在单位功率因数下，三相电流源变换器可以实现正弦波线电流整形，并且该控制系统具有快速的瞬态响应。

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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Deadbeat control scheme for three phase current-fed PFC converter with an optimum PWM strategy

A novel deadbeat control of a three-phase current-fed PFC power converter with an optimum PWM pattern is presented to improve its dynamic state performance. In order to improve the utility-side current THD characteristics of this converter, the feasible optimum PWM pattern under conditions of lower switching frequency for large capacity applications is introduced. By using a moving-average that provides a digital filter function for measured variables, the ripple component of carrier frequency can be removed. This deadbeat control scheme with proposed optimum PWM for current-fed three-phase PWM converter could be successfully applied to improve the transient response of utility-power source line current. It is proven from a simulation point of view that sinewave line current shaping can be achieved for a three-phase current source converter operating under unity power factor and proposed control system provides a fast transient response.

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来源期刊

Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)

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