Analysis of the Influence of Multi-pump Switching on Working Characteristics of Digital Hydraulic Driven Wind Turbine
The multi-pump digital hydraulic drive wind turbine can make the corresponding displacement hydraulic pump participate in the work according to the wind speed,so that the hydraulic wind turbine always keeps high efficiency in the whole working wind speed range.However,when different displacement hydraulic pumps participate in the work switch,the flow rate of the hydraulic transmission system of the wind turbine will change and the pressure impact will occur,which will affect the working characteristics of the wind turbine and the wind turbine's absorption of wind energy.Based on the analysis of the working principle of the multi-pump digital hydraulic drive wind turbine,the scheme of the 5 MW multi-pump digital hydraulic drive wind turbine is designed and modeled by AMESim.The simulation study of hydraulic pump working switch under constant wind speed and variable wind speed was carried out,and the variation rules of wind energy utilization coefficient,A hardware-in-the-loop simulation platform of 5 kW wind energy multi-pump digital hydraulic transmission was built to verify the simulation results.The results provide theoretical basis and technical reference for wind energy efficient utilization and stable operation of multi-pump digital hydraulic drive wind turbine.
万方数据
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