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Maximum Power Point Tracking without Current Sensor for Small Scale Photovoltaic Power system
Nobuyuki Kasa,Takahiko Iida,Gourab Majumdar 전력전자학회 2001 ICPE(ISPE)논문집 Vol.2001 No.10
This paper presents a maximum power point tracking without a current sensor for a small scale photovoltaic power system. The small scale photovoltaic power systems are used in parallel, and so the cost and the reliability are strongly demanded. In the proposed inverter, the current is controlled with open loop, and then the power of photovoltaic array is calculated by the equation using the voltage of the photovoltaic array. Therefore, the system can obtain the power by detecting only the voltage of the photovoltaic array. As a result, we may obtain the performance of the MPPT with a current sensor as well as with a current sensor.<br/>
Nobuyuki Kasa,Takahiko Iida 전력전자학회 1998 ICPE(ISPE)논문집 Vol.- No.-
This paper presents a newly developed transformer-less single phase inverter for a photovoltaic (PV) power system In the proposed system, there is no earth-leakage current at all in the theoretical base, and the main circuit of this system is rather simple and it is expected the higher efficiency will be teahzed The system is operated by a digital signal processor (DSP) which makes it more flexible in the control. From the experimental results, it is found that this new inverter supplies the AC power to utility grid line with the power factor of nearly unity.<br/>