Study on the current control strategy of hybrid rectifier based on the PR controller

This paper studyed a new hybrid rectifier applied to the Air Supply. By analyzing the operation principle of the circuit topology and the input current characteristics,we proposed the control target and designed a new strategy based on the PR controller/quasi PR controller to achieve it. It can make the two paralleling outputs including the PWM rectifier and the Diode rectifier and the two parts supply the active power at the same time. The power can be allocated by changing the given input current in the control system. The PWM recitfier part can compensate the harmonic component so well which is produced by the Diode rectifier that the harmonic content can be the least. Compared with the traditonal d/q axis current control and the three phase current control based on the PI controller, the new control strategy based on the PR controller/quasi PR controller has the least harmonic component data in the simulation and is the best control strategy among them..