摘要
针对传统交直交变换器功率密度低,谐波污染严重等不足,本文研究了一种直流侧无电容交直交变换器及其控制策略。电容的弃用提高了网侧性能;输出电流闭环控制的采用,提高了系统负载适应性;前馈补偿控制的引入,有效抵御了非正常输入对输出性能造成的影响。搭建了以TMS320F2812DSP为内核的实验样机对上述控制策略进行了验证,优良的实验结果表明采用文中控制策略的新型拓扑在具有同传统拓扑相同输出性能的基础上,更具有优良的输入性能。
As single-phase voltage-source inverters have the drawbacks,which output voltage magnitude and phase always lag the reference.This paper uses a multiple loop control and forward channel feed forward compensatory control scheme,which makes output voltage follow the reference without steady-state error.The application of multiple feedback loops made the system having excellent voltage regulation performance,fast dynamic response and high nonlinear load compatibility.The validity of proposed scheme has been verified by experimental results on a 2kVA experimental prototype.
出处
《电测与仪表》
北大核心
2011年第1期42-45,共4页
Electrical Measurement & Instrumentation
关键词
逆变
闭环控制
前向反馈补偿
inverter
closed loop control
feed forward compensatory
