PR控制在抑制逆变器输出变压器直流偏磁中的应用  

Application of PR control in restraining DC magnetic bias for output transformer of inverter

作　　者：张海钰[1] 王正仕[1] 陈辉明[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《机电工程》2011年第8期986-990,共5页Journal of Mechanical & Electrical Engineering

摘　　要：逆变器输出变压器的直流偏磁会对逆变器、输出变压器以及交流负载产生不良的影响,严重威胁逆变器的可靠运行。针对逆变器输出变压器直流偏磁问题,提出了一种简单、实用的基于PR控制策略的数字信号处理器(DSP)实现方案,并在理论研究的基础上,通过一台50 Hz/3 kW单相逆变器验证了该方案的有效性。实验结果表明,该方案不但可以实现对直流偏磁的良好抑制,还可以实现控制系统良好的动、静态特性,具有很好的实用性。The inverter itself,output transformer and AC loads would be influenced greatly by DC magnetic bias for output transformer of inverter which threatens the reliable operation of inverter seriously.Thus,aiming at DC magnetic bias for output transformer of inverter,a simple and applied approach involving PR control achieved by digital signal processor（DSP） was proposed,and according to theoretical researches,the effectiveness was verified by a 50 Hz/3 kW single phase inverter.The experimetal results show that,the effectual restraint of DC magnetic bias for output transformer of inverter can be accomplished successfully.The good performances of dynamic and steady characteristics of the control system are ralized.Its effectiveness is demonstrated through both of them.

关 键 词：逆变器 变压器 PR控制 直流偏磁 数字信号处理器 

分 类 号：TM464[电气工程—电器]