有源滤波器死区的脉冲直接补偿

s the presence of the dead time of switching device ,the compensation current of the inverter will have errors , and the compensation effect of active power filter becomes poor. For the fixed switching cycle of space vector current control and symmetrical PWM pulse, proposed a direct pulse compensation method of dead-time without zero-crossing detection circuit .It offsets the impact of dead time by superimposed a square wave on the triangular carrier which compared to the IGBT switching time, the triangular carrier and the square wave have the same frequency ,and the amplitude of square wave is equal to dead time. The method is very simple and effective. MATLAB simulation shows that the method basically achieves full compensation of dead time.