Five-phase fault-tolerant permanent magnet planetary gear motor for hybrid electric vehicle and operation method of five-phase fault-tolerant permanent magnet planetary gear motor

Abstract

The invention discloses a five-phase fault-tolerant permanent magnet planetary gear motor for a hybrid electric vehicle and an operation method of the five-phase fault-tolerant permanent magnet planetary gear motor. A permanent magnet gear ring and a permanent magnet sun gear which are coaxial are nested in a stator sequentially, a plurality of pairs of permanent magnets are adhered to both the inner surface and the outer surface of the permanent magnet gear ring, four consistent permanent magnet planetary gears evenly distributed on the periphery are arranged between the inner surface of the permanent magnet gear ring and the outer surface of the permanent magnet sun gear, the permanent magnets are closely adhered to the outer surface of each permanent magnet planetary gear, and the permanent magnet planetary gears are connected with a planet carrier; the permanent magnets closely arrayed are adhered on the outer surface of the permanent magnet sun gear; all the permanent magnets are magnetized along circles in which the permanent magnets are located radially, and each adjacent two permanent magnets are arrayed according to a polarity order of N, S, N and S; and a high-power-density multiple-phase fault-tolerant permanent magnet brushless motor is integrated with the high-torque-density permanent magnet planetary gears, and accordingly space utilization rate, transmission efficiency and torque density are high.

Description

technical field [0001] The invention belongs to the technical field of brushless motor manufacturing, in particular to a five-phase fault-tolerant permanent magnet motor suitable for medium / severe hybrid locomotives requiring high efficiency and high reliability. Background technique [0002] At present, hybrid electric vehicles are valued for their high fuel economy and low emissions. Mild hybrid electric vehicles based on starting / generating mode have limited energy-saving and emission reduction effects, so medium / severe hybrid electric vehicles have become the development direction in this field. Existing hybrid power synthesis systems are divided into two categories in terms of power synthesis modes, one is mechanical hybrid power synthesis systems. In this system, the mechanical planetary gear train is generally used as a hybrid coupling device, which can conveniently and efficiently combine the two power sources of the engine and the motor for power synthesis and ene...

AI Technical Summary

Problems solved by technology

However, the speed ratio of the inner and outer rotors of this kind of permanent magnet gear structure is fixed, and the magnetic core layer is stationary, so it is impossible to realize the synthesis and distribution of two power sources at different speeds, and it is difficult to be directly applied to the field of hybrid electric vehicles.

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