电流矢量调制的动力电池组充电系统  

Power battery charging system based on current SVPWM

作　　者：刘和平[1] 曾启才[1] 郭强[1] 任发[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《电力自动化设备》2013年第7期81-85,91,共6页Electric Power Automation Equipment

基　　金：中央高校基本科研业务费资助项目(CDJXS11151156)~~

摘　　要：针对动力电池组三段式充电特性,设计了用于动力电池组充电的三相电流型PWM整流器的主电路,采用了电流空间矢量调制的间接电流控制策略和PI控制器实现网侧单位功率因数运行和直流侧电流稳定输出。为了避免传统电流矢量调制所需要的坐标轴系变换,给出了在三相静止坐标系下的电流矢量调制算法。在此基础上给出了由TMS320F2808芯片控制的电流型PWM充电器控制系统。详细介绍了PI控制器、三相电压调理电路及二/三值逻辑转换的设计方法。该装置省去了网侧电流检测,能在较宽范围内输出纹波较小的充电电流,动、静态性能良好。计算机仿真与动力电池组充电实验结果表明,所提设计方案是可行的。The main circuit of three-phase current-source PWM rectifier is designed for the charging of power battery according to its three-stage charging pattern. Indirect current control strategy based on current SVPWM（Space Vector Pulse Width Modulation） and PI controller are adopted to achieve the unity power factor at grid side and the stable current output at DC side. The algorithm of SVPWM in three-phase stationary frame is applied to avoid the coordinate transform of traditional current space vector modulation, based on which,the TMS320F2808-based control system of current source PWM charger is designed. The design of PI controller,three-phase voltage conditioning circuit and two/three logic transform is introduced in detail. Without the detection of grid current,the charging set has excellent steady-state and dynamic performance ,providing the charging current with low ripple in wider range. Results of computer simulations and experiments demonstrate the feasibility of the introduced design.

关 键 词：整流器 动力电池组 电流控制 空间矢量调制 单位功率因数 

分 类 号：TM46[电气工程—电器]