基于双PWM变换器的能馈型交流电子负载研究Study on energy-feedback AC electronic load based on dual PWM converter
王洪希,鲁长贺,田伟
摘要(Abstract):
为了替代传统负载和能耗型电子负载,研究一种基于双PWM变换器的能量回馈型交流电子负载。主电路采用双PWM变换器构成背靠背系统的拓扑结构,负载模拟变换器采用滞环的电流单闭环控制策略,并网变换器采用直流电压外环和电网侧交流电流内环的双环闭控制策略。通过Matlab/Simulink仿真试验,证明了该方案可以实现对负载模拟侧电流精确控制,模拟所需负载特性的功能,同时将测试电能回馈电网,并网逆变侧功率因数接近于1。仿真结果表明该方案可行且有效。
关键词(KeyWords): 双PWM变换器;负载特性模拟;能量回馈;交流电子负载;滞环控制;双环控制
基金项目(Foundation): 吉林省科技发展计划项目(20150519023JH);; 吉林省教育厅科学技术研究项目(2012153)~~
作者(Author): 王洪希,鲁长贺,田伟
DOI: 10.16652/j.issn.1004-373x.2018.02.014
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