基于非线性控制PWM整流器的锂电池充放电技术  

Research on lithium battery charge and discharge technology based on PWM rectifier with nonlinear control strategy

作　　者：万光芬[1] 梁志珊[1] 

机构地区：[1]中国石油大学(北京)地球物理与信息工程学院,北京102249

出　　处：《电源技术》2013年第7期1140-1143,共4页Chinese Journal of Power Sources

基　　金：中国石油大学(北京)前瞻导向项目资助(2010QZ03)

摘　　要：针对传统采用晶闸管整流的充电机的缺点,设计了基于可逆PWM整流器的一种高效节能、高功率因数的锂电池智能充放电机。并基于整流器的无源性,采用阻尼注入方法设计无源功率控制器,提出采用状态观测器取代交流电压和直流电流传感器的方法,在保持整流器优良性能的前提下减少了传感器数目,降低了充电机成本。仿真结果表明基于状态观测器的充放电机PWM整流器无源控制系统,在输入电流总谐波扰动、直流电压稳态误差、直流电压动态误差、直流电压上升时间及功率因数等方面性能优异。In order to reduce the shortcomings of the traditional charger using thyristor rectifier,a high efficiency,high power factor and energy saving charge and discharge system based on reversible PWM converter was designed.According to the passivity of PWM rectifier,passivity power controller was designed by damp injection.To reduce the number of sensors and the costs while maintaining the high performance of the system,software sensors based on state observer vector was proposed to replace AC-voltage and DC-current sensors.The simulation results show that the system performance of the designed controller is great in input current THD,static DC voltage error,dynamic DC voltage error and DC voltage rising time,and power factor.

关 键 词：充放电机 PWM整流器 状态观测器 无源性 无传感器 

分 类 号：TM461[电气工程—电器]