Control and realization of DC/DC converter in direct driven wind power system

摘要

The output voltage of direct-driven wind generator was changing dynamically with environmental wind speed, and the variable range of wind speed was larger. In order to decline or promote DC voltage, the buck/boost converter was needed, so as to becomingly adjust DC voltage inflicted on the input of inverter, and ensure the inverter work normally. The constitution of DC/DC converter in direct-driven wind power system was expatiated, and the operation principle, control strategy of it were analyzed in detail. The wind power system was simulated in Matlab, and the testing equipment was designed and constituted. The experiment and simulation results show that, the converter can implement promoting or declining the input DC voltage, dynamically adjusting the input DC voltage of inverter, and the safety operation of inverter can be guaranteed.