Double-stator permanent magnet synchronous generator for hybrid electric vehicle

Abstract

The invention discloses a double-stator permanent magnet synchronous generator for a hybrid electric vehicle. The double-stator permanent magnet synchronous generator comprises a double-stator structure, a permanent magnet rotor structure, a front end cover, a rear end cover, an outer stator water-cooled casing, an inner stator water-cooled casing, a base and a rotary encoder, an inner stator and an outer stator of the double-stator structure are concentric in the radial direction, the outer stator is directly and fixedly connected with the outer stator water-cooling machine shell in a hot jacket mode, the inner stator is fixedly connected with the inner stator water-cooling machine shell at the end in a hot jacket mode, the permanent magnet rotor structure is designed to be in a hollow cup shape and located between the inner stator and the outer stator, and the whole set of generator is arranged on the base. The generator is high in overload capacity, small in size, light in weight, good in heat dissipation effect and low in loss, the electromagnetic torque is remarkably increased under the condition that the axial size and the radial size are not increased, the power density is improved, the cost is reduced, and the vehicle-mounted performance of a power supply system of a hybrid electric vehicle is facilitated.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a dual-stator permanent magnet synchronous generator for hybrid electric vehicles. Background technique [0002] The core energy of a hybrid electric vehicle comes from the generator driven by the vehicle's main engine, and an additional set of vehicle drive power auxiliary system is added to provide electric energy for the vehicle's overall drive motor and various auxiliary devices. As an important source of power supply in the vehicle, the performance of the generator will be directly reflected in the running process of the vehicle. It is required to have the characteristics of high power density, high efficiency, strong environmental adaptability, and high cost performance. In recent years, the most widely used motors in vehicle power supply systems are DC generators, diesel-driven generators, and electric excitation AC generators. However, these types of gene...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to address the requirement of high power density of generators for hybrid electric vehicles, alleviate the problem of difficult heat dissipation of the rotor caused by the increase of power density, increase the electromagnetic torque of the generator, reduce the weight of the generator, and strengthen the motor. High power density, saving the cost of the on-board power generation system, improving the stability of the hybrid electric vehicle power supply system, and providing a dual-stator permanent magnet synchronous generator for hybrid electric vehicles

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