A novel control strategy research to reduce the effects of inverter dead-time

The switching lag-time, which prevents the phase shortage of inverter arms, causes serious distortions of the output voltage and current of the inverter. This effect is well known as dead-time effect. Several compensation methods were proposed to improve the inverter's output voltage and current waveforms. Almost of the methods consider from voltage compensation, and the methods realization are complicate. This paper gives a new control strategy to reduce the effects of inverter dead-time. The dc-link voltage decreases with the motor speed, which can reduce not only the distortion of inverter output voltage, but also the zero current clamping. The method is very simple. Simulation is given to prove the effectiveness and feasibility of the method.