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Design Considerations and Performance Improvement of a Photovoltaic Pumping System Based on a Synchronous Reluctance Motor
Research Areafaculty-of-engineering
Year2012
AuthorsM.N.Ibrahim
Journal
Volume
Month
ISSN
AbstractThis paper presents the performance analysis of a photovoltaic (PV) energy source driving a Synchronous Reluctance (SyncRel) motor. The design considerations of the PV array, suitable for driving a centrifugal pump, are studied. Three design approaches are proposed at an average insolation of 0.5 kW/m2. These approaches depend upon determining the system operating point firstly and then maintaining this point on the PV generator characteristics. Either starting current, maximum power point or pre-specified voltage regulation is taken into account in each design approach. It has been found that the minimum number of cells can be achieved using the second design approach. A simple control strategy is presented to improve the system performance based on the PV generator parameters estimated from the second design approach. The proposed control strategy has mainly three functions; ensuring a successful motor starting, maintaining the motor voltage within a permissible range and forcing the PV array to operate at the Maximum Power Point (MPP) as possible. A sample of simulation results is introduced using the SyncRel motor measured parameters and the estimated parameters of the PV array
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