离网型直驱式风力发电模拟系统设计与实现

The Study and Design of Direct-driven Off-grid Wind Power Analog System

为促进风力发电技术的推广和人才培养,研制实验室条件下的风力发电模拟系统,用以模拟变速恒频风力发电的全过程。在此采用变频器、异步电动机、永磁同步发电机构成模拟直驱式风力发电机组,设计基于TMS320F2812的AC/DC/AC变换器系统,功率主电路部分采用三相不控整流+直流稳压+三相可控逆变拓扑结构,数字控制系统实现逆变电路的闭环控制、SPWM输出控制、装置保护等功能。通过实验证明,该模拟系统电路结构合理,控制策略正确,能够达到设计要求。

In order to promote the spread of wind power technology and talent education,it is very important to design an analog system in the condition of laboratory to simulate the process of variable speed constant frequency wind power.The paper makes the combination of frequency-converter,asynchronous motor and permanent-magnet syn-chronous generator to simulate direct-driven wind turbine generator system and designs a AC/DC/AC convertor which uses TMS320f2812 as controller.The main circuit is composed by three-phase full-bridge rectifier,voltage-stabilizer and three-phase full bridge inverter.The digital control system can carry out closed-loop control,SPWM control for in-verter and the function of protect.Through the experiment,the device＇s circuit structure is reasonable,control strategy is right,this system can meet the design requirements.