摘要
文中介绍了正弦脉宽调制(SPWM)与空间电压矢量脉宽调制(SVPWM)实现变频电源的基本原理及其异同。用MATLAB/SIMULINK工具箱对两种控制方法分别建立仿真模型。比较分析了在载波频率相同和开关次数相同两种情况下的输出电流波形。结果表明,SVPWM具有直流电压利用率高,开关损耗小,输出电流谐波小的优点。
This paper introduces the theories of Sinusoidal PWM and Voltage Space Vector PWM and differences between them. Then the simulation testing is carried out through MATLAB/SIMULINK. Output current waveform is compared at the same carrier wave frequency and at the same switching loss. The simulation result shows that the SVPWM system has achieved a higher capability, with the high utilization of DC voltage, low switching loss and less harmonics in output current.
出处
《通信电源技术》
2009年第4期4-7,共4页
Telecom Power Technology
关键词
正弦脉宽调制
空间电压矢量
变频
仿真
开关损耗
Sinusoidal PWM
Voltage Space Vector
frequency conversion
simulation
switching loss
