High-Performance Voltage Controller Design Based on Capacitor Current Control Model for Stand-alone Inverters Byeng-Joo Byen, Jung-Muk Choe and Gyu-Ha Choe--Dept. of Electrical Engineering, Konkuk University, Korea.

High-Performance Voltage Controller Design Based on Capacitor Current Control Model for Stand-alone Inverters Byeng-Joo Byen*, Jung-Muk Choe** and Gyu-Ha Choe†

 † Corresponding Author: Dept. of Electrical Engineering, Konkuk University, Korea. (ghchoe@konkuk.ac.kr) * Dept. of Electrical Engineering, konkuk University, Korea. (cooks321@konkuk.ac.kr) ** Dept. of Electrical Computer Engineering, Virginia Polytechnic Institute and State University, USA. (jmchoe@vt.edu) 

 Abstract – This study proposes high-performance voltage controller design that employs a capacitor current control model for single-phase stand-alone inverters. The single-phase stand-alone inverter is analyzed via modeling, which is then used to design the controller. A design methodology is proposed to maximize the bandwidth of the feedback controller. Subsequently, to compensate for the problems caused by the bandwidth limitations of the controller, an error transfer function that includes the feedback controller is derived, and the stability of the repetitive control scheme is evaluated using the error transfer function. The digital repetitive controller is then implemented. The simulation and experimental results show that the performance of the proposed controller is high in a 1.5 kW singlephase stand-alone inverter prototype. 

Keywords: AC-DC converter, Digital control, Repetitive control, Capacitor current control model

LINK: http://koreascience.or.kr/article/JAKO201525961704096.pdf