Comparison of five different approaches for real time digital feedback control of PWM inverters

A. Kawamura, T. Yokoyama
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引用次数: 57

Abstract

The five schemes are resistive-load-based deadbeat (DB) control, disturbance-observer-based DB control I. disturbance-observer-based DB control II, internal-model-principle-based pole placement, and digital proportional-integral (PI) control. The control schemes are applicable to single-phase and three-phase balanced-load inverter systems because the balanced three-phase system can be converted to two decoupled single phase systems. The modification of the control law from a single-phase to a three-phase system is explained. Simulations were performed in both systems, and experiments were carried out in the three-phase PWM inverter system. The disturbance-observer-based I and the digital PI control schemes yielded the best overall performance. The former is better in terms of total harmonic distortion for a nonlinear load, but the latter is based on a much simpler algorithm.<>
PWM逆变器实时数字反馈控制的五种不同方法的比较
这五种方案分别是基于电阻负载的无差beat (DB)控制、基于干扰观测器的DB控制i、基于干扰观测器的DB控制II、基于内部模型原理的极点放置和数字比例积分(PI)控制。该控制方案适用于单相和三相平衡负载逆变系统,因为平衡三相系统可以转换为两个解耦的单相系统。说明了从单相系统到三相系统控制律的修改。在两种系统中进行了仿真,并在三相PWM逆变系统中进行了实验。基于扰动观测器的I和数字PI控制方案获得了最佳的综合性能。对于非线性负载,前者在总谐波畸变方面表现较好,而后者基于更简单的算法。
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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