交流电力系统谐波补偿中电流源有源滤波器的新型控制

Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI:10.1109/IAS.1988.25158

Y. Hayashi, N. Sato, K. Takahashi

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引用次数: 98

摘要

提出了一种新的有源电力滤波器控制策略，该控制策略由电流源PWM(脉宽调制)变换器和LC滤波器组成，以消除PWM载波频率分量，从而获得良好的谐波补偿特性。PWM变换器由滤波器输入电流及其导数的反馈回路控制，在不插入阻尼电阻的情况下抑制LC滤波器的瞬态振荡。将控制系统作为采样数据系统进行分析，研究了反馈增益的最优值，即最优设计的截止频率约为PWM载波频率的七分之一，补偿延迟时间为载波周期的两倍。实验验证了采用所提控制策略的有源电力滤波器的性能

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A novel control of a current source active filter for AC power system harmonic compensation

A novel control strategy for an active power filter which consists of a current-source PWM (pulsewidth-modulated) converter and LC filters to eliminate PWM carrier frequency components is proposed in order to obtain good harmonic-compensation characteristics. The PWM converter is controlled by the feedback loops of filter input currents and their derivatives to suppress the transient oscillations in LC filters without inserting damping resistors. Analyzing the control system as a sampled data system, optimum values of feedback gains are investigated, that is, the cutoff frequency of the optimum design is about one-seventh of the PWM carrier frequency, and the compensation delay time is two times as large as the carrier period. The performance of the active power filter with the proposed control strategy is confirmed by experiments.<>

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Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting

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