The Research On Power Control And Variable Pitch Control Of Hydraulic Transmission Wind Turbine

In today’s society,wind energy has become a major source of clean energy.After recent years of development,China’s wind power installed capacity has become the world number one,and the entire wind power industry is still growing rapidly and the installed capacity is increasing by more than 100%.According to data,Gear box motor type wind turbine is the main models in China’s new wind turbine models,there are also a small number of direct drive wind turbines.And the current domestic running wind turbine generators has a large part of the high mechanical failure rate,difficult and low power quality,this situation seriously restricts the development of wind power as a clean energy future.Hydraulic transmission type wind turbine is the object of this article study,it is a kind of innovation type of wind turbine.Comparing with the traditional direct drive or gear box,this type of wind turbines has more safety and reliable maintenance,generators are easier to implement,and higher power quality.Based on the introduction of the structure and working principle of the hydraulic transmission type wind turbine.This paper’s key study is the control strategy research of output power smoothly and pitch control of the hydraulic transmission type wind turbine under sharp fluctuations in wind speed.In order to research the output power steady under the sharp fluctuations wind speed.Using AMESim/Matlab build a wind turbine model,quantitative pumpvariable motor model,variable pitch transmission model,propeller actuator,variable pitch control system model,variable motor control system model and proposing particle swarm optimization variable universe fuzzy PID control strategy on pitch controlling and simulating it.Under the condition of high wind speed fluctuation,the generator power output is controlled smoothly in accordance with expectation.By using the characteristics of the hydraulic transmission type wind power generator,the control of the speed of the motor is realized.Verify excellent control performance of the application of this method in the hydraulic transmission type wind turbine through the software platform.