三相可控整流并联系统环流的抑制研究

三相可控整流并联电路中由于控制与器件不能实时响应、零序开关占空比不同步和器件参数不相同等将导致环流的产生。采用一种统一电压调节器控制方法,即将各并联模块的外环电压调节器独立出来,形成统一电压调节器,通过对并联系统闭环电流的控制实现三相可控整流器的并联均流。对三相PWM整流并联系统进行了小信号建模,分析了其环流产生的原因,通过仿真验证了环流为0.12 mA,输出直流电压纹波电压为输出电压的0.2%;同时负载突变时,0.03s内电压值就恢复到给定值,其输出直流电压的变化量为2.8%,有较好的稳定性。...

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Bibliographic Details
Published in电子技术应用 Vol. 43; no. 4; pp. 157 - 160
Main Author 甘雪 曹太强 林玉婷
Format Journal Article
LanguageChinese
Published 西华大学电气与电子信息学院,四川成都,610039%西华大学电气与电子信息学院,四川成都610039 2017
流体及动力机械教育部重点实验室(西华大学),四川成都610039%流体及动力机械教育部重点实验室(西华大学),四川成都,610039
Subjects
三相可控整流器
并联
环流
电压调节
并联
电压调节
三相可控整流器
three-phase rectifier
flow equalize
unified voltage regulator
环流
parallel connection
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ISSN0258-7998
DOI10.16157/j.issn.0258-7998.2017.04.040

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Summary:三相可控整流并联电路中由于控制与器件不能实时响应、零序开关占空比不同步和器件参数不相同等将导致环流的产生。采用一种统一电压调节器控制方法,即将各并联模块的外环电压调节器独立出来,形成统一电压调节器,通过对并联系统闭环电流的控制实现三相可控整流器的并联均流。对三相PWM整流并联系统进行了小信号建模,分析了其环流产生的原因,通过仿真验证了环流为0.12 mA,输出直流电压纹波电压为输出电压的0.2%;同时负载突变时,0.03s内电压值就恢复到给定值,其输出直流电压的变化量为2.8%,有较好的稳定性。
Bibliography:Gan Xue1, Cao Taiqiang1,2, Lin Yuting2 （ 1 .School of Electric Information, Xihua University, Chengdu 610039, China ; 2.Key Laboratory of Fluid and Power Machinery（Xihua University）, Ministry of Education, Chengdu 610039, China）
In three phase controlled rectifier parallel system, there are several reasons will lead to the generation of circulation, such as control and device can not be real-time response, zero sequence switching duty cycle and device parameters are not the same.This paper puts forward a kind of control method, which using unified voltage regulator, it is to say that outer ring of the parallel modules voltage regulator has been separated, to form a unified common voltage regulator, through the closed loop current control module in the parallel implementation of the three-phase controlled rectifier current, suppress the circulation. This paper sets up a small signal model in three-phase PWM rectifier system in parallel, analyzes the reasons of three-phase PWM rectifier parallel circulation syst
ISSN:0258-7998
DOI:10.16157/j.issn.0258-7998.2017.04.040