Abstract：Switching power supply loop design, compensation and parameter tuning have always been difficult research points. A typical double Buck inverter is composed of two Buck circuits. This paper first analyzes the single Buck circuit system model considering the parasitic parameters under continuous current control mode (CCM). The use of classical PI controller through the Bode plot analysis can not reduce the system static error and improve the dynamic response capability. A Type-III digital compensator based on zero-pole compensation is designed, and a bilinear transform method is used to realize digital conversion. The mathematic model was set up under MathCad software for theoretical analysis, and the rationality of the experimental prototype validation control model and loop compensation parameters was made. The results show that the double Buck inverter considering the parasitic parameters under CCM adopts the established Type-III compensator and has good anti-load disturbance performance.
林镇煌, 毛行奎. Type-III数字补偿器在双Buck逆变器中的实现[J]. 电气技术, 2019, 20(2): 7-11.
Lin Zhenhuang, Mao Xingkui. The implementation of Type-III digital compensator in dual-Buck inverter. Electrical Engineering, 2019, 20(2): 7-11.
2019, Vol. 20 
