Permanent magnet generator for hybrid power motor train unit

Abstract

The invention relates to a traction motor for a hybrid power motor train unit, in particular to a permanent magnet generator for a hybrid power motor train unit. The permanent magnet generator for the hybrid power motor train unit comprises a machine base and an end cover, wherein a stator assembly and a rotor assembly are arranged in the machine base, the stator assembly is provided with a stator coil, the rotor assembly is provided with a rotary shaft, a rotor iron core, a permanent magnet baffle, a permanent magnet baffle pressing ring and a permanent magnet, a front inner sealing ring and a rear inner sealing ring are arranged at the two ends of the rotary shaft respectively, a punched piece of the rotor iron core is a permanent magnet structure which is provided with a thick magnetic steel tank and is of a V-shaped radial magnetic structure, the machine base is a cast-aluminum machine base and is of a structure formed by casting two rows of spiral copper pipes in parallel, the permanent magnet baffle pressing ring is of a cast-aluminum structure, and magnetic steel assembling and disassembling holes are evenly formed in the pressing ring. According to the motor, under the same size condition, the sectional area of the permanent magnet is increased, the power density and demagnetization resistance of the motor are improved, fluctuation of output voltage is reduced, the weight of the motor can be effectively reduced, and the margin of temperature rise of the motor is increased; meanwhile, the self weight can be reduced through the cast-aluminum pressing ring, assembly of the motor can be guaranteed, design cost is reduced, operation reliability is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to a traction motor for a hybrid train set, in particular to a permanent magnet generator for a hybrid train set. Background technique [0002] The structure of the traction motor used in the hybrid EMU is as follows: figure 1 As shown, the structure of the motor rotor punching plate in the traction motor is as follows figure 2 As shown, the motor rotor stamping adopts a permanent magnet structure with a V-shaped radial magnetic circuit structure with a narrow magnetic steel groove. Due to the narrow magnetic steel groove, the motor has low anti-demagnetization ability, large output voltage change and low motor power density; The structure of the motor rotor permanent magnet baffle pressure ring is as follows: image 3 As shown, the permanent magnet baffle ring of the motor rotor adopts a circular structure formed by steel plate processing. The weight is relatively large; the structure of the machine base is as follows Figur...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of poor heat dissipation, large volume and heavy weight of the existing fully enclosed motors, the present invention provides a permanent magnet generator for hybrid trains

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