The three-phase PWM converter is widely used due to the advantages of its simple topology

low voltage stress on switching devices and high efficiency.Conventionally

double closed-loop PI (Proportional-Integral) controllers are used for three-phase PWM converters.However

PI controllers have two main problems:difficulty to adjust the parameters of the controller and lack of adaptability to the system parameters variations.To deal with these problems

a load-adaptive control method and a feedback linearization control method are proposed for the voltage outer-loop and current inner-loop control of the three-phase PWM converter

respectively.The proposed method avoids the difficult and time-consuming parameters adjustment problems of the conventional PI controllers design

and improves the performance of the system.The simulation and experiment results show that

compared to the traditional PI control and the existing feedback linearization control method

the proposed control method uses less adjustable parameters which are easy to be chosen

and provides less output voltage perturbation

less recovery time and stronger adaptivity with respect to load variations.