| PWM整流器并联系统零序电流研究 |
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| 引用本文： | 倪帅,唐丽娜,刘杰,倪世江.PWM整流器并联系统零序电流研究[J].工矿自动化,2012,38(6):67-71. |
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| 作者姓名： | 倪帅 唐丽娜 刘杰 倪世江 |
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| 作者单位： | 1. 中国矿业大学信电学院,江苏徐州,221008
2. 黄骅市五一机械有限公司,河北黄骅,061100 |
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| 摘 要： | 以两电平PWM整流器并联系统为例,分析了并联模块间零序环流产生的原因:并联模块间零序环流是由2个模块的零序电流占空比差异产生的;并联模块间零序环流的产生与后续的负载大小及类型无关。介绍了基于k控制的PWM整流器并联系统零序电流控制策略的实现,并对该控制策略进行了仿真验证。仿真结果表明,k控制可抑制PWM整流器并联系统零序电流,但尚未达到完美的抑制效果。
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| 关 键 词： | PWM整流器 并联整流器 零序电流 环流 k控制 |
Research of Zero Sequence Current of Parallel System of PWM Rectifier |
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| NI Shuai
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TANG Li-na
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LIU Jie
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NI Shi-jiang.Research of Zero Sequence Current of Parallel System of PWM Rectifier[J].Industry and Automation,2012,38(6):67-71. |
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| Authors: | NI Shuai TANG Li-na LIU Jie NI Shi-jiang |
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| Affiliation: | 1.School of Information and Electrical Engineering of CUMT.,Xuzhou 221008,China. 2.Huanghua Wuyi Mechanical Corporation,Huanghua 061100,China) |
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| Abstract: | Taking two-level parallel system of PWM rectifier as example,the paper analyzed cause of zero sequence circulation in parallel module: the circulation is generated by difference of duty cycle of zero sequence current of two modules;generation of the circulation has no correlation with size and type of load.It introduced implementation of control strategy of zero sequence current of parallel system of PWM rectifier based on k control and made simulation verification for the control strategy.The simulation result showed that k control can inhabit zero sequence current of parallel system of PWM rectifier but has no perfect inhabiting effect. |
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| Keywords: | PWM rectifier parallel rectifier zero sequence current circulation k control |
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