摘要
为减少环流、静态误差的影响,在传统电压电流双闭环反馈控制基础上,提出一种新的逆变器并联控制策略。加入重复控制策略对误差信号进行控制,减少系统静态误差,使用一级电压前馈电路加快系统响应速度,简化了控制器设计。阐述了控制策略的工作原理和参数确定方法,通过Matlab仿真和两台30 kVA单相全桥逆变器样机实验表明,该方案在全负载范围内能快速实现高功率因数输出和均流效果,验证了方案的合理性。
A novel control scheme is proposed for parallel inverter control to reduce cross current and static error after analyzing the parallel circuit base on traditional double-loop feedback method.Repetitive control is added into this inverter to regulate error signal and decrease static error.Using the output voltage feed forward control,the process speed is improved and controlling system design is simplified.The principle of the control strategy and the methods of designing parameters are discussed.The rationality of multiple control method is proved by Matlab and two 30 kVA single phase dual-bridge inverters.The results verify that current-sharing and high power-factor output is available.
出处
《电力电子技术》
CSCD
北大核心
2011年第3期102-105,共4页
Power Electronics
关键词
逆变器
中频
重复控制
inverter
medium-frequency
repetitive control
