基于DSP与CPLD的矩阵变换器间接SVPWM控制

Implementation of indirect SVPWM for the matrix converter based on DSP and CPLD

文章研究了基于虚拟直流环节的间接空间矢量调制策略,分别在仿真和实验中验证了该控制策略;实验利用具有实时处理能力的DSP并结合CPLD实现4步换流,输出了正弦的交流电压和输入电流,取得了良好的效果。

The matrix converter （MC） has attracted considerable attention due to its several good features. However,the MC needs a lot of power switches, which leads fo the complex topology and control,so the development of the MC has been limited to some extent. In this paper, the ＇ indirect SVPWM＇ modulation method based on the ＇fictitious dc link＇ is researched and verified by simulation and experiment. The experiment is implemented with DSP and CPLD to complete the four-step commutation strategy. The resultant output voltages and input currents are sinusoidal and good effect is achieved.