Research On Xingan Meng Small Wind Power System

At the present stage,with the continuous development of the economy,if we still use the traditional energy consumption structure,it can not meet the basic human needs,so the development and utilization of new energy has been imminent.Wind power generation has many advantages,not only rich in resources,coupled with the in-depth reform of power generation technology,will have an important impact on the sustainable development of electricity.Due to the distance between isolated islands and remote areas from cities,it is very difficult to use electricity.Therefore,this paper designs a small wind power generation system.According to the concept of integrated control,this study divides the system into three modules and seven different operating states.The former can include:power generation module,power storage module and power consumption module.It takes integrated control,enabling the system to switch between the seven different operating states.Each module will have the corresponding control strategy.In the power generation module,the output power of the system should be maximized,which can be controlled by variable step climbing method.The system can automatically collect information and adjust the duty cycle of Buck circuit.In the storage module,the running state of the battery can be analyzed,and then the corresponding decision can be made.In the process,the residual capacity of the battery and the output voltage can be detected.When carrying out load tracking control,it is necessary to apply PID control strategy to generate PWM pulse width modulation signal,so as to adjust the duty ratio of Buck circuit and promote the system to track the running state of the load.Of this study is to design the main circuit of the system,and the power consumption of a rural family,calculates the load of the average daily power consumption,combined with the data results and regional wind resource condition,select suitable for application of small wind turbines,used for agricultural production and life,etc,the capacity can reach1000 w,the rated wind speed reached eight m.s^-1.In this study,based on the consideration of load consumption,the appropriate battery is adopted,with a capacity of400Ah and an output voltage of 48V.This paper builds a simulation model based on matlab.When modeling the wind speed,the method of four components superposition is used.By adopting this method,it can not only play a positive role in the formation and simulation,but also carry out a more in-depth exploration of the wind speed model.After each part of the simulation system,it is proved that under the action of small wind power generation system,integrated control can be generated for the whole system,and the feasibility of the design is also proved.When the three-phase ac load is supplied directly to the wind turbine,harmonic interference will occur.Finally,a solution to this problem is proposed.