单相Z源逆变器控制策略

张 瑾; 齐铂金; 张少如

单相Z源逆变器控制策略

1.
北京航空航天大学机械工程及自动化学院, 北京 100191
2. 河北师范大学物理科学与信息工程学院, 石家庄 05001

基金项目: 国家863计划资助项目(2006AA11A145)

详细信息

作者简介:
张瑾 (1980-),男,北京人,博士生,zhangjin_ntu@hotmail.com.

中图分类号: TM 464
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出版历程
- 收稿日期: 2009-03-23
- 网络出版日期: 2010-03-31

Control strategy for single-phase Z-source inverter

1.
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2. College of Physics and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China

摘要

摘要: 提出了一种单相Z源逆变器控制策略,该策略由Z源网络电压控制环、交流侧电压瞬时控制环和直流侧电压纹波前馈控制环3部分组成.由于Z源阻抗网络存在非最小相位效应,因此在Z源网络电压闭环控制基础上引入了交流侧瞬时控制,使逆变器获得了较快的响应速度.针对负载较重时Z源网络输出电压波动大的问题,通过电压纹波前馈控制修正调制比,有效抑制了直流侧电压纹波对交流侧的影响, 提高了输出交流电压的波形质量.仿真及实验结果均证实了所提出的控制策略的有效性.
- Z源逆变器 /
- 瞬时值控制 /
- 前馈控制 /
- 正弦脉宽调制
Abstract: The control strategy for single-phase Z-source inverter, which consisted of Z-source network voltage feedback, ac-side instantaneous feedback and voltage ripple feed-forward loop, was presented. Due to the non-minimum-phase effect of Z-source network, an ac-side instantaneous controller was incorporated based on the Z-source network voltage feedback loop to guarantee fast dynamic response. The Z-source network has voltage ripple during operating with the heavy load, which decreases the performance of the output voltage. The proposed voltage ripple feed-forward controller could modify the modulation index, thus the effects were prevented from propagating into the ac-side and hence the quality of the output ac voltage waveform was improved. Both computer simulation and experimental results verify the effectiveness of the proposed strategy.
- Z-source inverter /
- instantaneous control /
- feed-forward control /
- sinusoidal pulse width modulation

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参考文献(1)

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