Power transfer and time-domain analysis of a wind-turbine water-pumping system

We analyzed a wind-turbine water-pumping system, which consists of a wind turbine with a permanent magnet generator electrically coupled with a water pump via a motor-generator configuration. Following system´s steady-state analysis, we discuss how the success of the start-up process depends on the system´s start-up dynamics as related to a proper choice of water pump characteristics. We studied the dependence of the water pump start-up process on the kinetic energy stored in the wind turbine rotor. We also discussed the cut-in and cut-out process in the wind-turbine water-pumping system. Our analysis is supported with the simulation results.