Control System for Synchronous Battery-Less Solar-Powered Series Water Pumps
2018
This study proposes the optimal solar energy control system for solving the problem of unstable power for multi-levels water tanks. Due to the unreliable on weather and cloud, solar energy system is supposed to have the appropriate energy source which can support the system continuously. The solar photovoltaic system contains various solar panels that based on the direct current grid for a large quantity input current. Moreover, water tanks are placed in the multiple-levels and connected for water stream flow. The solar panels are connected to each water pump and provided the power separately. The water pump will fulfill water from the first level tank until it is full, and then close-down before going to next level tank. Also, when sunlight is obscured due to different weather or clouds, the system will bring water from nearby tanks to supply the other tanks. However, when the system is out of energy, it will pump water from the highest altitudes to the plant-field, and get lower to the lowest altitudes tank, respectively. Consequently, the plant-fields will be circulated the water regularly and sufficiently until the water in the whole tanks is empty because of no internal energy. Therefore, the system model of this study is appropriate for implementing in any weather and planting field, especially the rural region without an electrical system.
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