Compound robust control of permanent magnet synchronous motor based on quasi‐Z source inverter

In this study, a compound control strategy for motor side and quasi-Z source is proposed to improve the robustness of permanent magnet synchronous drive system subjected external disturbance. method, complementary sliding mode as feedback controllers are combined with disturbance observer technology feed-forward compensator achieve fast tracking suppression PMSM system. Firstly, signal models inverters motors established. Secondly, by introducing state variables, composite controller designed strong based on matched disturbances. Then, in order further performance, estimate mismatched disturbances Finally, global asymptotic stability Lyapunov criterion proved. The simulation experimental results show that has advantages convergence, small speed pulsation