Abstract
In order to prevent the safety accidents causing by the out-of-step of the vertical-moving Permanent Magnet Linear Synchronous Motor (PMLSM), the out-of-step protection scheme of the combination of the mechanical braking and dynamic braking has been established according to the common features of various out-of-step of PMLSM, on this basis, the mathematical model of dynamic braking of the vertical-moving PMLSM is established, the dynamic braking characteristics of the motor are obtained, and at the same time, the relationship equation between the braking force and the reactance and resistance of armature circuit is established, and the dynamic braking circuit of the vertical-moving PMLSM is designed. The experiment shows that the established out-of-step scheme of PMLSM is practicable, as well as the established mathematical model and theory, can effect prevent the safety accidents causing by the out-of-step of the vertical-moving PMLSM, and thus guaranteed the motor’s safety.
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