Permanent magnet synchronous motor for high power density electric automobile

Abstract

The invention discloses a permanent magnet synchronous motor for a high power density electric automobile. The motor comprises a motor body formed by a stator and a rotor. A stator iron core of the stator is of a deep-groove wide-teeth type structure. A stator winding is formed by multiple strands of parallelly wound fin wires. The rotor is of a surface-mounted magnetic steel structure. A stator housing is of an interlayer structure where a spiral water channel is arranged on the inner wall. A rotor iron core is of a hub-type structure. The magnetic steel are of tile-shaped structures with a set pole-arc coefficient which are embedded in the outer circumference of the rotor iron core, and solidified on the outer circumference of the rotor iron core through epoxy resin after being wound by glass fibers. The adjacent magnetic steel polarities are opposite to each other. A hub-type magnetic steel ring or a rotary transformer fixedly sleeves the back end part of a rotor shaft. The motor is advantaged by small size, light weight, big power intensity, strong overload capacity, capability of meeting actual operation working conditions of electric automobiles and increasing endurance journeys and remarkable energy saving effects.

Description

technical field [0001] The invention relates to electric vehicles, in particular to a permanent magnet synchronous motor for electric vehicles with high power density. Background technique [0002] With the gradual popularization of electric vehicles, drive motors for electric vehicles have become the focus of industry attention and research hotspots. Different from the application occasions and design requirements of traditional permanent magnet synchronous motors, permanent magnet synchronous motors for electric vehicles should have the characteristics of high efficiency, wide speed range, high overload capacity, tight structure, small size and light weight. The design of permanent magnet synchronous motors for automotive applications presents new challenges. Contents of the invention [0003] The purpose of the present invention is to provide a high power density permanent magnet synchronous motor for electric vehicles with high efficiency, energy saving and long cruis...

AI Technical Summary

Problems solved by technology

Different from the application occasions and design requirements of traditional permanent magnet synchronous motors, permanent magnet synchronous motors for electric vehicles should have the characteristics of high efficiency, wide speed range, high overload capacity, tight structure, small size and light weight. The design of permanent magnet synchronous motors for automobiles presents new challenges

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