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An Improved MPPT Converter with Current Compensation Method for Small Scaled PV-Applications  

이동윤 (한양대학교 전기공학과 대학원)
노형주 (한양대학교 대학원 전기공학과)
현동석 (한양대학교 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.8, no.2, 2003 , pp. 143-150 More about this Journal
Abstract
An improved MPPT converter with current compensation method for small-scaled PV-applications is presented in this paper. The proposed method implements maximum power point tracking (MPPT) by variable reference current which is continuously changed during one sampling period. Therefore, the Power transferred to the load is increased above 9% by the proposed MPPT converter with current compensation method. As a result, the utilization efficiency of Photovoltaic (PV)-panel can be increased. In addition, as it doesn't use digital signal processor (DSP), this MPPT method has the merits of both a cost efficiency and a simple control circuit design. Therefore, it is considered that the proposed MPPT method is proper to low power, low cost PV-applications. The concept and control principles of the proposed Un moth()d are explained in detail and its validity of the proposed method is verified through several simulated results.
Keywords
Current compensation method; maximum power point tracking (MPPT); photovoltaic module; digital signal processor (DSP); utilization efficiency;
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