摘要
提出一种电网电压不平衡时PWM整流器的控制方法,该方法采用自抗扰理论,将PWM整流器模型中耦合项和参数扰动视为系统扰动,采用扩张状态观测器(ESO)进行观测并补偿。建立了基于Matlab/simulink的PWM整流器仿真模型,通过仿真给出了电网电压不平衡时PWM整流器的输入电压波形,输出直流电压波形以及频谱分析结果等。仿真结果表明提出的自抗扰控制方法效果显著。
This paper investigates a control method for the PWM rectifier under unbalanced voltage condition. The proposed approach is based on ADRC, cross-coupling and parameter variation of the PWM rectifier, which can be estimated and compensated by an extended state observer （ESO）. The simulation model of the PWM rectifier is built by Matlab/simulink, and its input voltage waveform, DC side output voltage waveform and the result of spectral analysis are given. The results show that the control method based on ADRC has remarkable effect.
出处
《水力发电学报》
EI
CSCD
北大核心
2008年第5期172-176,共5页
Journal of Hydroelectric Engineering
基金
国家科技攻关计划(2005BA901A33)
霍英东高校青年教师基金(101076)
