The development of permanent magnet motor at home and abroad
Study of permanent magnet synchronous motor mainly fixed-frequency- powered permanent magnet synchronous motor operating characteristics of the study, especially starting performance of steady-state
properties and direct research. Permanent magnet synchronous motors start to rely on the direct provision of damper winding induction motor torque to accelerate to near synchronous speed, and then by the
reluctance torque and synchronous torque will pull into the synchronous motor.
With the permanent magnet synchronous motor speed control system performance requirements of the continuous improvement of the need to design a high efficiency, high torque inertia ratio, high energy
density permanent magnet synchronous motor, GRSlemon speed control system and others for fast dynamic performance and high efficiency The request to introduce a modern permanent magnet synchronous motor design methods.
Motor parameter variation through-line identification, and identification of the parameters used to control speed control system, but also can improve the control system robustness. With the development of artificial intelligence, intelligent control has becomea modern control an important branch of the field, electric drive control system of intelligent control technology has become the major developments in electric drive control, direction, and electric drive technology will bring a new era. At present, an effective way to
achieve the intelligent control are three: Based on artificial intelligence expert system (ExpertSystem); based on fuzzy set theory (FuzzyLogic) fuzzy control; based on artificial neural network (Artificia1NeuraNetwork) of the neural control. BKBose and others from the late eighties has been committed to the field of artificial
intelligence technology in the electric drive applications, and haveachieved encouraging research results.
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