摘要
在分析单相逆变器结构及比例谐振控制算法基础上,根据逆变器的谐波特点,提出一种比例谐振与重复控制相结合的控制策略。通过重复控制的内模原理抑制逆变器输出波形的谐波畸变,与传统的比例谐振控制相比,重复控制引入能有效提高逆变器输出电压电流波形质量,降低系统谐波总畸变率。实验结果验证了所提控制策略的正确性和有效性。
Based on the analysis of single-phase inverter structure and proportional-resonant and repetitive control algorithm, the paper puts forward an improved control strategy which combines proportional-resonant control with repetitive control according to the characteristics of inverter harmonic. The harmonic distortion of inverter output waveform is suppressed by repetitive control internal model principle. Compared to conventional proportional-resonant control, the waveform qualities of inverter output voltage and current are improved by the proposed repetitive control strategy, and the total harmonic distortion of the system is also reduced. The experiment results verify the correctness and effectiveness of the proposed control strategy.
出处
《电气自动化》
2013年第4期51-53,62,共4页
Electrical Automation
基金
国家自然科学基金项目(51207002)
陕西省教育厅科学研究计划项目(2013JK1017)
陕西省科技计划工业攻关资助项目(2013K07-12)
宝鸡文理学院重点科研计划项目(ZK11068)
关键词
逆变器
比例谐振
重复控制
谐波补偿
控制器设计
inverter
proportional-resonant （PR）
repetitive control
harmonic compensation
controller design
