A reinforced excitation method based on the constant excitation current of synchronous motor

In order to avoid large amount of gas emission caused by out of step synchronous motor,the strong excitation protection was discussed from improving stability point of view.The principle and realization ways of forced excitation were analyzed.The defect of traditional open loop force excitation method was pointed out.Constant excitation current strong excitation measures were made.The correctness of new measures are verified by theory and practice.