IMPROVEMENT OF SYNCHRONOUS AND ASYNCHRONOUS MOTOR DRIVE SYSTEMS SUPPLIED BY PHOTOVOLTAIC ARRAYS WITH FREQUENCY CONTROL
Laid Zarour - Rachid Chenni - Abdelhalim Borni - Aissa Bouzid
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 a 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.
Keywords: solar energy, optimization, photovoltaic arrays, pumping, modelling, efficiency