离网型风力发电系统逆变器控制技术研究

针对离刚型风力发电系统中负载侧逆变器的运行需求,实现不平衡与非线性负载下逆变器输出稳定幅值和频率的电压,提出了两相同步旋转坐标系下基于比例积分谐振控制的电压闭环控制技术,以解决传统的比例积分控制器由于带宽限制而引起输出电压性能下降的问题,进而建立了基于DSP2812的数字系统.实验结果表明,所提控制方案可实现输出电压在不平衡与非线性负载下的稳定输出,具有较强的负载适应能力.

Research on Inverter Control Technique for Stand-alone Wind Energy Generation System

To satisfy the operation requirement of load-side inverter in the stand-alone wind energy generation system,the voltage closed-loop control technique based on the proportional integral plus resonant controller is proposed to obtain the inverter output voltage with the steady magnitude and frequency under the unbalanced and nonlinear load.The control system based on the DSP2812 is built,and the experimental results validate the proposed control technique has strong load-adaptive ability.