Lyapunov Redesign 기법을 이용한 태양광 발전 시스템의 안정한 적응형 컨버터 제어기법

• Published in: 전기학회 논문지 P권, 61(4) Vol. 61; no. 4; pp. 161 - 167
• Main Authors: 조현철(Hyun-Cheol Cho), 박지호(Ji-Ho Park), 김동완(Dong-Wan Kim)
• Format: Journal Article
• Language: Korean
• Published: 대한전기학회 2012
• Subjects: 전기공학; Adaptive control; Lyapunov redesign; Converter control method; Photovoltaic power system
• ISSN: 1229-800X; 2586-7792
• DOI: 10.5370/KIEEP.2012.61.4.161

Energy conversion systems such as power inverters and converters are basically significant in establishing photovoltaic power systems to enhance power effectiveness. This paper proposes a new converter control method by using the Lyapunov redesign approach. We construct the proposed control mechanism linearly composed of nominal control and auxiliary control laws. The former is generally designed through a well-known power electronic technology and the latter is implemented to compensate real-time control error due to uncertain natures of converter systems in practice. For realizing adaptive control capability in the proposed control mechanism, a control parameter vector is estimated by utilizing a steepest descent based optimization method. We carry out numerical simulation with Matlab(c) software to demonstrate reliability of the proposed converter control system and conduct a comparative study to prove its superiority by comparing with a generic converter control methodology.