输入串联输出并联DC_AC逆变器系统的控制策略.pdf
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第 30 卷 第 15 期 中 国 电 机 工 程 学 报 Vol.30 No.15 May 25, 2010 16 2010 年 5 月 25 日 Proceedings of the CSEE ?2010 Chin.Soc.for Elec.Eng.
文章编号:0258-8013 2010 15-0016-08 中图分类号:TM 74 文献标志码:A 学科分类号:470·40 输入串联输出并联 DC/AC 逆变器系统的 控制策略 陈武,阮新波,庄凯 航空电源航空科技重点实验室 南京航空航天大学 ,江苏省 南京市 210016 Control Strategy for Input-series and Output-parallel Connected Inverter System CHEN Wu, RUAN Xin-bo, ZHUANG Kai Aero-Power Science-Technology Center Nanjing University of Aeronautics and Astronautics , Nanjing 210016, Jiangsu Province, China ABSTRACT: Input-series and output-parallel ISOP inverter 感电流反馈的方法相比,采用负载电流反馈时,即使输出滤
system is very suitable for high input-voltage and high 波电容不匹配,也不影响输出均流效果。同时,还分析输入
output-current power conversion applications. Input voltage 均压环与系统输出电压环的关系,给出输入均压环和系统输
sharing IVS and output current sharing OCS among the 出电压环的设计准则。最后以一台由 2 个模块组成的输入串
constitutional modules of the ISOP inverter system are required 联输出并联逆变器原理样机验证该控制策略的有效性以及
for its proper work. A control strategy with load current 环路设计的正确性。
controlled was proposed for ISOP inverter system to achieve 关键词:输入串联输出并联;负载电流反馈;均压/均流
IVS and OCS. The output current magnitudes were regulated
based on the error of the input voltages of the modules, i.e., 0 引言
increasing the output current of the module with higher input
voltage and decreasing the output current of the module with 在高输入电压的功率变换场合,可以将多个变
lower input voltage. Compared with the control strategy with 换器模块在输入侧串联来构成变换器系统,以降低
output filter inductor current controlled, the unmatched filter 开关器件电压应力。如果输入串联的变换器模块数
capacitors have no influence on the OCS with the proposed 为 n ,则每个模块承受的电压仅为总输入电压的
control strategy. Meanwhile, the relationship between the IVS 1/n ,因此可以选择到合适的开关器件。根据变换器
loop and output voltage loop was analyzed and their design 模块输出侧的连接方式,多变换
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