一种在线自调整死区补偿策略  

An Online Self-regulation Dead-time Compensation Strategy

作　　者：李林珏[1] 邓焰[1] 

机构地区：[1]浙江大学,电气工程学院,浙江杭州310027

出　　处：《电力电子技术》2013年第4期1-2,16,共3页Power Electronics

基　　金：863计划(2011AA050202)~~

摘　　要：根据逆变器死区产生机理分析电感电流过零区域和非过零区域对死区效应的影响。推导出空间矢量脉宽调制(SVPWM)三相并网逆变器电感电流纹波实时计算公式,并使用坐标系变换法获取电感电流基波分量,从而在线确定电感电流过零区域和非过零区域,对这两个区域采用不同的死区补偿电压以达到最佳死区补偿效果。通过实验证明并网电流谐波含量得到了降低,电流波形得到了改善。Based on the dead-time effect principle, the impacts of zero current zone and none zero current zone of the output inductor are analyzed.The real-time current ripple of the output inductor of a three-phase space vector pulse width modulation （SVPWM） inverter is calculated and rotation reference frame is used to get inductor fundamental cu- rrent, so the zero current zone and none zero zone can be acquired online.Then different dead-time compensation voltages are used on these two zones to get the best performance of dead-time compensation.The experimental results demonstrate that the harmonic of grid-connected is reduced and the current waveform is improved.

关 键 词：死区补偿 三相逆变器 电感电流纹波 

分 类 号：TM307[电气工程—电机]