Permanent-magnet brushless direct-current motor stator with novel parallel winding wiring

Abstract

The invention belongs to the technical field of motor stators, and particularly relates to a permanent-magnet brushless direct-current motor stator with novel parallel winding wiring. The permanent-magnet brushless direct-current motor stator with novel parallel winding wiring comprises a stator iron core and stator windings. Each phase winding is composed of two sections of windings. The two sections of windings of each phase winding are coiled along stator grooves in the stator iron core. The two sections of windings of each phase winding are connected in parallel, so that a phase wire common end and a phase wire input end are formed respectively. The permanent-magnet brushless direct-current motor stator with novel parallel winding wiring can be used on the condition of any power level of a permanent-magnet brushless direct-current motor, and is high in efficiency, small in phase current, and capable of greatly reducing the possibility of demagnetization, caused by temperature rising, of a permanent magnet, reducing cost, reducing the magnetic energy loss, and effectively avoiding the phenomena that due to the fact that the current is too large, the permanent magnet is demagnetized and a machine breaks down.

Description

Technical field: [0001] The invention belongs to the technical field of motor stators, in particular to a permanent magnet DC brushless motor stator adopting novel parallel winding wiring. Background technique: [0002] At present, the power required by electric vehicles is provided by DC motors. When driving on flat roads, the speed of electric vehicles can reach very fast. When encountering climbing slopes or heavy loads, the speed of electric vehicles will immediately drop and slow down. The inductance decreases and the current increases until the motor reaches magnetic flux saturation. Even if the current increases, the driving speed still cannot be increased. The input power and output power are very different, and the loss and heat can easily cause burn-out. Invention content: [0003] The purpose of the present invention is to provide a permanent magnet brushless DC motor that can be used at any power level, with higher efficiency and small phase current, which grea...

AI Technical Summary

Problems solved by technology

[0002] At present, the power required by electric vehicles is provided by DC motors. When driving on flat roads, the speed of electric vehicles can reach very fast. When encountering climbing slopes or heavy loads, the speed of electric vehicles will immediately drop and slow down. The inductance decreases and the current increases until the motor reaches magnetic flux saturation. Even if the current increases, the driving speed still cannot be increased. The input power and output power are very different, and the loss and heat can easily cause the machine to burn out.

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