基于VSI的永磁直驱风力发电机模拟器

Simulator of Permanent Magnet Direct-drive Wind Turbine Generator Based on VSI

提出了一种基于三相电压型逆变器(VSI)的风力发电机组模拟方案。该模拟器在建立风力机模型、永磁同步发电机(PMSG)模型和传动模型的基础上,通过控制逆变器输出电压幅值、频率,实现了对永磁直驱风力发电机的电气外特性和机械惯性的等效模拟。采用电压电流双闭环和前馈复合控制来提高逆变器的电压控制精度和跟随速度。实验结果表明,该模拟器的运行特性与风力发电系统的理论特性吻合度高,可满足实验室条件下进行风力发电系统功率变换器/控制器研究的需要。

A novel wind turbine generator simulator using three-phase voltage source inverter（VSI） is proposed based on the characteristics of wind turbine model,permanent magnet synchronous motor（PMSG） model and mechanical mo- del.The simulator can simulate the external electrical and mechanical characteristics of wind turbine generator by con- trolling the voltage amplitude and frequency of the output voltage of the inverter.Based on the voltage current double closed-loop control and feedforward compound control, the proposed simulator can improve the voltage control accu- racy and tracing speed.The experimental results show that the characteristics of the proposed simulator are highly consistent with the theoretical characteristics of the wind turbine generator system, and it can meet the requirements of study on wind turbine generator system converter/controller in laboratory.