具有瞬时电流控制能力的电流源PWM逆变器[交流电机]

Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI:10.1109/IAS.1988.25171

P. Enjeti, P. Ziogas, J. Lindsay

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引用次数: 11

摘要

提出了一种电流源型脉宽调制逆变器的瞬时电流控制方法。该方案通过改变电流源PWM模式的调制指数，在交流电机中提供瞬时电流响应。为了实现这一任务，使用了具有选择性消除电机线路电流中低阶谐波的最佳编程PWM模式。输出滤波电容器用于旁路逆变器输出中的电流谐波，并允许线路电流的瞬时变化。这种控制方法在交流电机中提供正弦输出电压和正弦电流。该方案保证了快速响应特性与高性能稳态行为的结合。给出了电流源型PWM的设计过程，以及变速情况下程控PWM电流模式的选择。所选结果经实验验证。

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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A current source PWM inverter with instantaneous current control capability [AC motors]

A novel approach for the control of a current-source PWM (pulsewidth-modulated) inverter is proposed to achieve instantaneous current control capability. The scheme provides instantaneous current response in the AC motor by altering the modulation index of the current-source PWM patterns. To achieve this task, optimum programmed PWM patterns with selective elimination of lower-order harmonics in the motor line currents are used. Output filter capacitors are provided to bypass the current harmonics in the inverter output and allow for the instantaneous changes in line currents. This method of control provides sinusoidal output voltages and sinusoidal currents in the AC motor. The scheme guarantees fast response characteristics combined with high-performance steady-state behavior. A design procedure for the current-source PWM and selection of programmed PWM current patterns for a variable-speed situation are illustrated. Selected results are verified experimentally.<>

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Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting

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