包含位置式PID算法、积分分离式PID，基于SVPWM的三电平逆变的matlab仿真，分析了该信号的时域、频域、倒谱，循环谱等,应用小区域方差对比，程序简单，有PMUSIC 校正前和校正后的比较，自己编的5种调制信号。- It contains positional PID algorithm, integral separate PID, Based on SVPWM three-level inverter matlab simulation, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Application of small area variance comparison, simple procedures, A relatively before correction and after correction PMUSIC, Own five modulation signal.