Dead-time compensation method and device of inverter and inverter

The invention proposes a dead-time compensation method and device of an inverter and the inverter, and relates to the field of motor control. The dead-time compensation method of the inverter comprises the steps of acquiring a sampling current according to an output current of a three-phase inverter; determining a rotor position angle of the sampling current; determining a current vector phase angle of the sampling current; determining phase delay compensation quantity for compensating filtering delay; determining a phase of the sampling current according to the rotor position angle, the current vector phase angle and the phase delay compensation quantity; determining a phase dead-time compensation value by a predetermined compensation strategy according to the phase of the sampling current; and compensating a driving current of the three-phase inverter according to the phase dead-time compensation value. The acquired phase of the sampling current, acquired by the method, is more accurate, the determined phas