Comparative study of photovoltaic pumping systems using a permanent magnet synchronous motor (PMSM) and an asynchronous motor (ASM)
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Abstract
The dynamic performances of a permanent magnet synchronous motor (PMSM) and an asynchronous motor (ASM) connected to a photovoltaic (PV) array through an inverter are analyzed. The mathematical models of PV array, inverter/motor and controller are developed. The photovoltaic array is represented by an equivalent circuit whose parameters are computed using experimentally determined current-voltage I-V characteristics. The necessary computer algorithm is developed to analyze the performance under different conditions of the solar illumination for pump load. The study also examines the effectiveness of the drive system both for starting and DC link voltage fluctuations caused by varying solar illumination.
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