Speed Sensorless Vector Control of Cascaded H-Hridge Inverter Drive PMSM Based on MRAS and Two-Level SVPWM

In order to improve the utilization of Dc, voltage, a control method of cascaded H-bridge inverter based on two-level SVPWM is proposed in this paper, which is equivalent to injecting zero-sequence components into carrier phase-shifted SPWM produce saddle wave. At the same time, this paper also studies the PMSM model reference adaptive speed Sensorless control method, in which the current loop design based on the direct design of complex vector regulator, the speed loop design of the traditional PI regulator, finally, In this paper, the above research is effectively combined, and the simulation results show that the expected results are achieved.