级联型电力电子变压器不控整流环节仿真分析
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摘要
针对目前常规电力电子变压器输入级功率因数校正环节控制策略复杂、功率因数低的问题,采用增设有源功率因数校正(APFC)单元来保证网端单位功率因数运行的方式,并通过利用MATLAB/Simulink工具搭建了级联串联型电力电子变压器输入级整流环节仿真模型,对输入侧网端有功功率和无功功率情况进行了仿真,并对不控整流端电压波形进行FFT仿真分析,实现输入级功率因数为0.995 5运行、不控整流环节相较于传统的全控型PWM整流环节器件成本降低和控制更为简单。
Aiming at the complex control strategy and low power factor of the input power factor correction in the input stage of conventional power electronic transformer,the APFC unit is used to ensure the unit power factor operation of the network end,and through the use of MATLAB/Simulink. A simulation model for the input stage rectifier circuit of a cascade series power electronic transformer was built to simulate the active power and reactive power conditions at the input side of the power network.The FFT simulation analysis was performed on the voltage waveform of the uncontrolled rectifier terminal to realize the input stage power. The factor is approximately 1,the uncontrolled commutation link is more cost-effective and simpler to control than the traditional fully-controlled device PWM commutation link.
Aiming at the complex control strategy and low power factor of the input power factor correction in the input stage of conventional power electronic transformer,the APFC unit is used to ensure the unit power factor operation of the network end,and through the use of MATLAB/Simulink. A simulation model for the input stage rectifier circuit of a cascade series power electronic transformer was built to simulate the active power and reactive power conditions at the input side of the power network.The FFT simulation analysis was performed on the voltage waveform of the uncontrolled rectifier terminal to realize the input stage power. The factor is approximately 1,the uncontrolled commutation link is more cost-effective and simpler to control than the traditional fully-controlled device PWM commutation link.
引文
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[13]张文文,刘子龙,孙洪武,等.具有APFC功能的AC-DC开关电源设计[J].电子测量技术,2016,39(5):22-26.
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[15]韩晓钢,齐铂金.基于单周期控制的Boost型APFC电路设计及仿真[J].电气技术,2017(1):8-12.
[16]马暖,胡彦奎.单级BOOST型APFC电路控制方法的研究及仿真[J].自动化与仪器仪表,2011(5):33-35.
[2]陈启超,纪延超,潘延林,等.配电系统电力电子变压器拓扑结构综述[J].电工电能新技术,2015,34(3):41-48.
[3]李小栋. H桥级联型电力电子变压器的控制系统研究[D].长沙:湖南大学,2015.
[4]杨韬.配电网模块级联型电力电子变压器研制[D].长沙:湖南大学,2015.
[5]马凡,马伟明,付立军,等.直流侧电流断续时不控整流器的动态大信号数学模型建立与验证[J].中国电机工程学报,2010,30(12):36-42.
[6]黄小凡,刘欣睿.电压型不控整流电路[J].电焊机,2017,47(1):56-62.
[7]漆炜之,刘全景,谢永强,等.基于三相-单相变换的新型同相供电系统方案[J].电力系统保护与控制,2017,45(4):93-98.
[8]赖华.整流装置在某型发电机组中的应用设计[J].电子技术,2017,46(2):52-54.
[9]周念成,魏能峤,王佳佳,等.三相不控整流负荷的谐波功率实测建模[J].中国电机工程学报,2017,37(19):5583-5593,5835.
[10]陈骞,陆翌,裘鹏,等.基于双Boost交联拓扑的三相功率因数校正器[J].电力自动化设备,2017,37(10):153-160.
[11]朱威,阳习党,肖欢,等.基于电压波形分析的三相不控整流装置故障诊断[J].船电技术,2017,37(10):10-16.
[12]蔡逢煌,王武,陈浩龙.倍压Boost-APFC变换器的改进型单周期控制[J].电力自动化设备,2015,35(10):121-126.
[13]张文文,刘子龙,孙洪武,等.具有APFC功能的AC-DC开关电源设计[J].电子测量技术,2016,39(5):22-26.
[14]孙志成,王小鹏,田俊伟.一种三相不控整流电路APFC校正方法[J].微型机与应用,2016,35(20):27-30.
[15]韩晓钢,齐铂金.基于单周期控制的Boost型APFC电路设计及仿真[J].电气技术,2017(1):8-12.
[16]马暖,胡彦奎.单级BOOST型APFC电路控制方法的研究及仿真[J].自动化与仪器仪表,2011(5):33-35.