期刊论文

Voltage-Differential-Feedback With Integral Control Plus Repetitive Control for PWM Inverters

Xiong, J.

中文

电工技术学报

Diangong Jishu Xuebao/Transactions of China Electrotechnical Society

1000-6753

2007

22

1

85-90

10.3321/j.issn:1000-6753.2007.01.015

国家自然科学基金资助项目(50207003)。；

本校为其他机构

提出一种积分环节电压微分反馈控制和重复控制相结合的逆变器输出电压数字化控制方案。在不使用电流传感器的前提下，本文提出的补偿器内环能在离散域任意配置逆变器极点位置，大大改善逆变器的动态性能；重复控制外环则致力于稳态精度的提高。积分环节的引入能加强逆变器的抗扰动能力，提高补偿器内环的稳态精度，克服电压微分反馈控制结合重复控制方案引起的“瞬态”电压跌落问题。该方案在一台基于DSP TMS320F240控制系统的逆变器上得到验证，实验结果证明在仅使用输出电压反馈的前提下，该方案能得到高质量的输出波形。

A digital control scheme based on output voltage-differential-feedback with integral control and repetitive control is proposed for PWM inverters. With the proposed compensator inner loop, arbitrary pole assignment can be achieved, which improves the dynamic characteristic of inverter without current sensor and also eliminates the dynamic voltage drop phenomenon associated with voltage-differential-feedback control plus repetitive control scheme. The repetitive control outer loop improves the steady state performance of inverter. Analysis and design of such a control system are discussed. Simu...