Research on rectifier control strategy of power system

By taking PWM rectifier as an example, the paper analyzes the relationship between power factor and harmonic. By designing the direct power control strategy of sliding film variable structure, the three voltage type PWM rectifier is adjusted to improve the power factor. The simulation results show that the proposed method can effectively improve the power factor and has good fast response. It can effectively improve the efficiency of equipment and greatly improve the impact of substation equipment on power supply network and power supply equipment.