| 基于电流观测器的三相变流器重复控制方法 |
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| 引用本文： | 梅红明,刘建政. 基于电流观测器的三相变流器重复控制方法[J]. 中国电机工程学报, 2011, 31(27) |
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| 作者姓名： | 梅红明 刘建政 |
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| 作者单位： | 电力系统及发电设备控制和仿真国家重点实验室（清华大学）,北京市海淀区,100084 |
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| 摘 要： | 提出一种基于电流观测器的三相变流器重复控制方法，采用简单的电流观测器模型，通过对每个控制周期中输出电流增量的状态反馈，可有效消除数字延时的影响，并自动补偿由于电压预测偏差、死区时间和模型参数偏差等造成的波形畸变和相位偏移，真正实现在每个控制周期的结束时刻使实际电流跟踪到其给定值，在计算量增加不大的条件下，保持传统无差拍控制快速响应的特点，并对数字延时以及模型参数具有很好的鲁棒性。
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| 关 键 词： | 无差拍 数字延时 电流观测器 重复控制 |
A Repetitive Control Method of Three-phase VSC based on Current State Observer |
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| MEI Hongming,LIU Jianzheng,Haidian District,Beijing ,China). A Repetitive Control Method of Three-phase VSC based on Current State Observer[J]. Proceedings of the CSEE, 2011, 31(27) |
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| Authors: | MEI Hongming LIU Jianzheng Haidian District Beijing China) |
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| Affiliation: | MEI Hongming,LIU Jianzheng(State Key Lab of Control and Simulation of Power Systems and Generation Equipments(Tsinghua University),Haidian District,Beijing 100084,China) |
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| Abstract: | A repetitive control method with a simple current observer was proposed,which can compensate the time delay impact of digital control as well as the output current error caused by predictive error of main voltage,dead-time effect and deviation of model parameters.Deadbeat control is realized by forcing the output current exactly arrive at its reference at the end of each sample period.This method preserves the rapid response of deadbeat control without increasing much computation and is robust against digit... |
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| Keywords: | deadbeat delay of digital control current state observer repetitive control |
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