基于FPGA的双馈风力发电机变频器实时仿真

Real-time Simulation of Transducer for Doubly-fed Induction Generator Based on FPGA

双馈风力发电机(DHG)变频器具有高精度、高频率等特性,普通的仿真平台很难实时模拟风力发电机变频器的动态特性。针对上述问题,首先设计了可行的实时仿真控制系统方案,然后在PCI扩展(PXI)主机上的两块LabVIEW现场可编程门阵列(FPGA)板卡上分别建立DFIG双脉冲宽度调制(PWM)变频器的机侧和网侧变频器模型,并对其进行通信设计以实现两块FPGA板卡间的数据交互。最后将设计的变频器模块在1.5MWDFIG仿真平台上进行并网测试,实验结果显示所提方案能实时模拟实际的DFIG变频器。

The frequency converter of doubly-fed induction generator(DFIG) has the characteristics of high accuracy and high frequency.It is difficult for ordinary simulation platform to simulate the dynamic characteristics of wind turbine generator in real-time.To solve these problems,a feasible real-time simulation control system is designed.Then,the model of DFIG dual-pulse width modulation(PWM) converter is built on two Lab VIEW field programmable gate array(FPGA) boards on the PCI extended(PXI) host,and the communication design is carried out to realize the data interaction between the two FPGA boards.Finally, the designed converter module is tested on the 1.5 MW DFIG simulation platform.The results show that the proposed scheme can simulate the actual DFIG converter in real time.