Abstract
Pump storage systems are an emerging technology in the field of hydropower. Pump turbines are considerably useful for the run-off-type hydropower. Pump turbines can be used to generate power and regulate water from the lower reservoir to the upper reservoir using a single unit. Pump turbines allow to maintain stable and renewable power generation. Unfortunately, there are no appropriate pump turbine designs because it is considerably difficult to maintain the performance of the pump turbine in both turbine and pump modes. In this study, the design and experimental investigation of the pump turbine have been discussed. A 3-kW-class pump turbine model was designed using a discharge gradient to head the gradient method, and the performance of the pump turbine was experimentally investigated. In addition, the cavitation test was performed for the 3-kW-class pump turbine model.
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