Zhang Kai, Kang Yong, Xiong Jian, Zhang Hui, Chen Jian
摘 要
A way to synthesize a repetitive controller directly with SPWM
inverters is presented. It combines the advantages of repetitive control
(low THD with nonlinear loads) and SPWM technique (easy implementation,
low cost, reliable operation, etc). To cancel out the high resonant peak
of the SPWM inverter, the repetitive controller incorporates a notch
filter. Design of the controller is discussed in detail, and a case
design is presented. Low THD (1.4%) is achieved with nonlinear load,
this proves the method to be a cost-effective upgrading technique for
SPWM inverter products