Abstract
This paper proposes a novel photovoltaic water pumping system (PVWPS) with an improved performance and cost. This system doesn’t contain a DC-DC converter, batteries nor rare-earth motors. Removing the aforementioned components will reduce the whole cost and increase the reliability of the system. For enhancing the performance of the PVWPS, a ferrite magnet synchronous reluctance motor (FMSynRM) is employed. Besides, the motor inverter is utilized to drive the motor properly and to extract the maximum available power of the PV system. This is performed using a suggested control strategy that controls the motor inverter. Furthermore, to show the effectiveness of the proposed PVWPS, the performance of the proposed system is benchmarked with a PVWPS that is employing a pure SynRM. Moreover, the complete mathematical model of the system components and the control is reported. It is proved that the flow rate employing the proposed system is increased by about 29.5% at a low irradiation level (0.25 kW/m2) and 15% at a high irradiation level (1 kW/m2) compared to the conventional solar system using a pure synchronous reluctance motor (SynRM). An experimental laboratory test bench is built to validate the theoretical results presented in this research work. Good agreement between the theoretical and the experimental results is proved.
Highlights
Due to increasing CO2 and the global warming problem, as a result of using traditional energy sources, renewable energy has been receiving a great attention in the current decade
To combine the advantages of permanent magnet and reluctance motors, this paper proposes to use a ferrite magnet synchronous reluctance motor (FMSynRM) to enhance the efficiency, cost and reliability of the solar pumping system
At rated speed (i.e., IV region), the motor output power is similar to the maximum power point at the rated conditions in Figure 3, which proves that the motor is successfully working at the desired point
Summary
Due to increasing CO2 and the global warming problem, as a result of using traditional energy sources, renewable energy has been receiving a great attention in the current decade. In [11], an induction motor is used in a photovoltaic pumping system without considering batteries Such system uses a DC-DC converter for increasing the generated power from the solar array, which increases the total cost and losses of the system. DC-DC converter, removing motor speed and solar array currents sensors and using a permanent magnet motor This type of motors has the advantages of high power/volume, which is required in submersible pumps, high efficiency and good power factor. To combine the advantages of permanent magnet and reluctance motors, this paper proposes to use a ferrite magnet synchronous reluctance motor (FMSynRM) to enhance the efficiency, cost and reliability of the solar pumping system. The proposed system is not reported before through the literature
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