MATLAB switching problem

Thread Starter

Soo Chin Chong

Joined Aug 24, 2016
HI, I am new in MATLAB. I design an Active power filter (APF) with constant frequency integration control for single phase application. I having some switching problem. Previously I using PSCAD software achieved a good result with current total harmonic distortion less than 4%. However, in MATLAB I getting the result but that had a lot of noise or ripple as shown in the figure below.

May I know why this happen and how can I solve it?

Thank you.APF current.PNG FFT of current.PNG