Researching of the out-of-step preventing controlling strategy of permanent magnet linear synchronous motor based on fuzzy control

Permanent magnet linear synchronous motor will generate out-of-step when affected by external disturbances and the changes of parameters during the operation, based on the analysis of the effect of frequency and power voltage for the moving stability of permanent magnet linear synchronous motor, established the model of out-of-step prevention controlling based on fuzzy control. The model introduces dual-mode fuzzy control structure, makes power angle stability margin as the controlling and adopts the strategy of changing the power voltage and speed to prevent the occurrence of out-of-step. The design of the prevent model, experimental devices and experimental methods are highly presented. Experimental results show the real-time performance, Anti-jamming capability and the high ability to inhibit the uncertainty of the model of the strategy.