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为了有效提高煤矿供电系统的电能质量,提出了一种适用于静止无功发生器(VSG)的基于内模原理的滑模电流解耦控制算法。采用内模控制来实现对理想VSG解耦模型的控制,保证系统动态响应速度;使用滑模控制实现dq轴电流解耦,同时提高系统对参数摄动和外部扰动的鲁棒性。仿真结果表明,该控制策略提高了系统动态性能,有效改善了输出电流波形质量。
In order to effectively improve the power quality of power supply system in coal mine, a sliding mode current decoupling control algorithm based on the internal model for stationary reactive power generator (VSG) is proposed. The inner model control is used to control the ideal VSG decoupling model to ensure the dynamic response speed of the system. The sliding mode control is used to decouple the dq axis current and improve the robustness of the system to parameter perturbation and external disturbance. The simulation results show that this control strategy improves the system dynamic performance and effectively improves the output current waveform quality.