空间矢量三相PWM整流器仿真  

Simulation on Three Phase PWM Rectifier Using Space Vector Pulse Width Modulation(SVPWM)

作　　者：王崇武[1] 李宏[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《鱼雷技术》2010年第2期146-151,共6页Torpedo Technology

摘　　要：空间矢量调制(SVPWM)是三相PWM整流器中应用最广泛的控制方法。该文针对在同步旋转坐标系中采用电流解耦控制的PWM整流器,建立了基于SVPWM的三相PWM整流器的Matlab/Simulink模型,SVPWM采用相邻的离散矢量跟踪连续变化的参考矢量,其跟踪过程只对矢量作用时间有限制而对矢量的组合顺序没有要求,分析了SVPWM的不同空间矢量组合对三相PWM整流器的谐波和功率因数的影响。分析结果表明,三相SVPWM调制的交流侧具有良好的电流波形品质,且无功分量低,而两相SVPWM调制具有开关次数少,动态响应快,适合于大功率整流场合应用。Space vector pulse width modulation（SVPWM） is one of the most widely used control methods for three phase pulse width modulation（PWM） rectifiers because of its simple configuration and fixed switching frequency.We establish a three phase PWM rectifier model based on SVPWM by using Matlab/Simulink in synchronous rotary coordinates.The SVPWM adopts adjacent discrete vectors to track the continuous reference vector with only restraint to vectors working time rather than vectors sequence in one period during the tracking process.We also analyze the influences of different space vector sequences of the SVPWM on the harmonic wave and power factor of three phase PWM.The results indicate that the three phase SVPWM can output high quality waveform with lower reactive power component,while the two phase SVPWM has low switching frequency and fast response to be suitable for large power rectifiers.

关 键 词：PWM整流器 空间矢量调制(SVPWM) 电流解耦控制 Matlab/Simulink模型 

分 类 号：TJ631.2[兵器科学与技术—武器系统与运用工程] TM46[电气工程—电器]