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

Abstract

The invention belongs to the technical field of motor stators, and particularly relates to a permanent magnet brushless direct-current motor stator adopting a novel parallel winding wiring method. The permanent magnet brushless direct-current motor stator comprises a stator iron core and stator windings. Each phase of winding is composed of two winding sections, wherein the two winding sections are arranged along a stator slot in the stator iron core, and the two winding sections are connected in parallel to form a phase line public end and a phase line input end respectively. The motor stator can be used under any power levels of a permanent magnet brushless direct-current motor, efficiency is higher, phase currents are small, the probability of demagnetization of a permanent magnet caused by temperature rise is reduced greatly, cost is reduced, magnetic energy consumption is reduced, and demagnetization of the permanent magnet and burning cased by overlarge currents can be effectively avoided.

Description

Technical field: [0001] The invention belongs to the technical field of motor stators, and particularly refers 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 electric vehicles are running on flat roads, the speed can reach very fast. When encountering a climbing slope or a heavy load, the speed of the electric vehicle immediately decreases and the speed becomes slower. The inductance decreases and the current increases until the motor reaches the saturation of the magnetic flux. Even if the current increases again, the driving speed cannot be increased. The input power and output power are very different, and the loss and heat can easily cause the machine to burn. Summary of the invention: [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 h...

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.

Images