Energy Output Control Method of Direct-drive Fan Based on PLC Soft Redundancy
In order to improve the control accuracy of energy output,a direct drive fan energy output control method based on PLC soft redundancy is proposed.According to the internal structure of the direct drive fan system,the mathematical model of the direct drive fan is built.Based on the operating state of the direct drive fan,the aerodynamics of the direct drive fan is analyzed under the four wind speed changes of basic wind,gust,gradual wind and random noise wind.According to the dynamic characteristics of the di-rect drive fan at different wind speeds,the PLC soft redundancy system is combined with the reactive pow-er control strategy of the direct drive fan.With the wind speed change and the capacity limit of the energy storage system as constraints,the direct drive fan can implement energy output control.The experimental results show that the maximum frequency deviation of the direct drive fan system in this method is 0.025 Hz,which verifies that this method has strong control accuracy and high reliability.
万方数据
维普
