Water-cooled permanent magnet synchronous motor with a built-in outer rotor and rotary transformation magnetic resistance for hybrid power automobiles

Abstract

The invention discloses a water-cooled permanent magnet synchronous motor with a built-in outer rotor and rotary transformation magnetic resistance used for hybrid power automobiles, which comprises a casing, a false axis with an opening inside arranged in the middle of the casing and an end plate fixedly sleeved on one axis end of the false axis; wherein two ends of the end plate are respectively fixed on the inner wall of the casing; a stator core wound with a stator coil is arranged on the inner wall of the casing; a rotor bracket provided with rotor magnetic steel is arranged on the outer wall of the false axis through a bearing; the stator core and the rotor magnetic steel are oppositely arranged; a rotor of a rotary transformer is fixedly mounted on the bottom wall of the rotor bracket and a stator opposite to the rotator is mounted on the outer wall of the false axis. The electromotor needs no maintenance, has reliable use and long service life, can effectively improve the anti-interference capacity of detecting signals. The water-cooled permanent magnet synchronous motor can effectively cool the stator coil winding and the stator core and simultaneously weaken the cogging torque of solid rotor synchronous motor.

Description

technical field [0001] The invention relates to a permanent magnet synchronous motor, in particular to a water-cooled permanent magnet synchronous motor for a hybrid vehicle with a built-in outer rotor reluctance resolver. Background technique [0002] With the rising fuel prices and people's increasing attention to environmental protection and energy saving, under this background, electric vehicles are at the forefront of the times. Hybrid electric vehicles have attracted extensive attention from engineers and technicians due to their superior characteristics. The electric drive system of hybrid electric vehicles is divided into different categories of drive motors, including DC brushed motor systems, asynchronous motor systems, switched reluctance motor systems, wireless brushed DC motor system and permanent magnet synchronous motor system. Among them, the permanent magnet synchronous motor has the advantages of high power density, high power factor, high efficiency, etc....

AI Technical Summary

Problems solved by technology

However, due to the characteristics of hybrid electric vehicles, the motor is required to be small in size and high in power density. It is necessary to solve the problems of heat dissipation and reasonable use of effective space. At the same time, it is also necessary to solve the installation and anti-interference problems of the resolver due to the plug-in method.

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