基于VF-DPC的地铁供电系统

Metro power supply system based on VF-DPC

为了克服传统虚拟磁链(VF)计算器存在直流偏移、积分饱和的问题,将虚拟磁链直接功率控制策略(VFDPC)应用于地铁牵引整流器中。虚拟磁链直接功率控制策略可以直接计算瞬时有功功率P和无功功率Q,结合SVM,构成了开关频率固定VF-SVM-DPC控制策略。仿真实验证明,此控制策略性能良好,牵引供电系统鲁棒性好、动态响应速度快且谐波污染少,能满足地铁牵引供电系统的指标要求。

To overcome the traditional virtual flux（VF） calculator dc offset and integral saturation, virtual flux direct power control strategy（VF-DPC） is used in metro traction rectifier, and virtual flux direct power control strategy drawing on virtual flux（VF） without sampling the AC side AC voltage sensor can directly calculate the instantaneous active power P, reactive power Q, combined with SVM, constitutes a fixed switching frequency VFSVM-DPC control policy. The experimental results show that its performance and traction power supply system robustness are good, and dynamic response is fast and less harmonic pollution than VF, so VF-SVM-DPC can meet the requirements of metro traction power supply system index