Synchronous reluctance motor rotor applied to hybrid power system

Abstract

The invention discloses a synchronous reluctance motor rotor applied to a hybrid power system. The synchronous reluctance motor rotor applied to the hybrid power system comprises a rotor core and magnetic steel. The rotor core is formed by rotor punching sheets in an overlying mode. Each rotor punching sheet comprises a plurality of symmetrical magnetic poles, and the polarities of every two adjacent magnetic poles are opposite. Each magnetic pole comprises a plurality of layers of grids, wherein the magnetic steel is placed in the grids. Grooves are formed in the excircle of the rotor in the straight axes in the direction facing the circle center of the rotor.

Description

technical field [0001] The invention relates to a synchronous reluctance motor structure, in particular to a synchronous reluctance motor rotor structure applied to a hybrid power system. Background technique [0002] Existing drive motors for vehicles are generally AC asynchronous motors and permanent magnet synchronous motors. AC asynchronous motors are simple in structure and reliable in operation, but have low power density and narrow constant power speed regulation range. The conduction of heat from the rotor to the bearing will greatly reduce the life of the bearing, thereby shortening the overall life of the motor; although the permanent magnet synchronous motor has high efficiency, high power density, and a wide range of constant power speed regulation, the heat generated by the rotor is relatively low. Low, but because it is dominated by permanent magnet torque, its counter electromotive force is too high at high speed, and loss of control will damage the system, wh...

AI Technical Summary

Problems solved by technology

[0002] Existing drive motors for vehicles are generally AC asynchronous motors and permanent magnet synchronous motors. AC asynchronous motors are simple in structure and reliable in operation, but have low power density and narrow constant power speed regulation range. The heat generated by the rotor is transmitted to the bearing, which will greatly reduce the life of the bearing, thereby shortening the overall life of the motor; although the permanent magnet synchronous motor has high efficiency, high power density, and a wide range of constant power speed regulation, the heat generated by the rotor is relatively low. Low, but because it is dominated by permanent magnet torque, its counter electromotive force is too high at high speed, and loss of control will damage the system, which is not conducive to the control of high-speed vehicle operation

[0003] In recent years, synchronous reluctance motors have been gradually used in the field of electric vehicles. Synchronous reluctance motors have the advantages of high power density, wide speed range, high efficiency, and small size. However, due to the need to provide permanent magnets to improve motor performance, often use Rare earth permanent magnets, which are non-renewable and expensive

Images