首页>
外国专利>
MODEL PREDICTION CONTROL METHOD FOR VOLTAGE SOURCE-TYPE RECTIFIER WHEN GRID VOLTAGE IS UNBALANCED
MODEL PREDICTION CONTROL METHOD FOR VOLTAGE SOURCE-TYPE RECTIFIER WHEN GRID VOLTAGE IS UNBALANCED
展开▼
机译:电网电压不平衡时电压源型整流器的模型预测控制方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A model prediction control method for a voltage source-type rectifier when the voltage of a grid is unbalanced, comprising: (1) three-phase grid voltage and current are converted via abc/αβ coordinates into grid voltage and current in a two-phase static coordinate system; (2) a positive and negative sequence coordinate separation is performed on the grid voltage in the two-phase static coordinate system to acquire a positive sequence voltage and negative sequence voltage of the grid; (3) an active power reference value is calculated; (4) a current reference value of the rectifier in the two-phase static coordinate system is calculated; and, (5) a model prediction current control is performed to select the optimal switch state. The method, while ensuring rapid and accurate tracking of a current in two phases of static coordinates, effectively eliminates voltage fluctuations at an alternating current side, and improves the quality of electric power of the system.
展开▼