PWM逆变器的双环数字控制研究

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI:10.1109/APEC.2009.4802646

Shiying Tang, Li Peng, Yong Kang

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引用次数: 2

摘要

本文主要研究PWM逆变器的双环数字控制。提出了一种基于极点配置的控制参数整定方法。为了避免数字处理器的采样和计算时间造成的一阶延迟，引入了状态观测器和干扰观测器的设计。由于直流电压的波动和死区时间的影响，状态观测器会出现不可忽视的预测误差。为了克服预测误差，在状态观测器中加入了重复补偿器，仿真和实验证明了其良好的性能。实验结果表明，该控制系统具有良好的稳态特性和快速的瞬态响应。

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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Research on Dual-Loop Digital Control for PWM Inverters

This paper focuses on the research of dual-loop digital control for PWM inverters. A method based on pole assignment is proposed to tune the control parameters. To avoid one-timestep delay caused by the sampling and calculating time of digital processors, design of state observer and disturbance observer are brought in. Due to the ripples of DC voltage and dead time effect, an un-neglected predict error of state observer will presents. To overcome the predict error, a repetitive compensator is added to the state observer, and its nice performance is proved by both simulations and experiments. The experiment results are presented also to show nice steady state characteristics and fast transient response of the proposed control system.

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2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition

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