Flywheel type permanent magnet starter generator

Abstract

The invention provides a flywheel type permanent magnet starter generator which comprises a shaft (1), a flywheel (2), an N-pole magnetic yoke (4), stator cores, an armature winding, an N-pole rotor core (7), a permanent magnet (8), an S-pole rotor core (11) and an S-pole magnetic yoke (12). The stator cores are formed by axially arranging an N-pole stator core and an S-pole stator core at intervals, the number of poles of the N-pole stator core and the number of poles of the S-pole stator core are 3n, and an excitation element is arranged between the two stator cores. Rotor cores are formed by axially arranging the N-pole rotor core and the S-pole rotor core at intervals, the number of poles of the N-pole rotor core and the number of poles of the S-pole rotor core are 2n or 4n, and the N-pole rotor core and the S-pole rotor core differ by 360 degrees / 4n or 360 degrees / 8n in the circumferential direction. The generator is small in permanent magnet demagnetization effect, and short in magnetic path, most of a magnetic path passes through a silicon steel sheet, and therefore iron losses are small. A coil on the N-pole stator pole and a coil on the S-pole stator pole can effectively compensate each other. The flywheel type permanent magnet starter generator is provided with a flywheel type outer rotor structure and can be in starting and power generation running.

Description

technical field [0001] The invention relates to a flywheel type permanent magnet starter generator, which belongs to the technical field of automobile motors. Background technique [0002] The starter generator can operate not only as a starter, but also as a generator, supplying power to electrical equipment after starting the engine. The flywheel starter alternator rearranges the traditional starter, generator and engine flywheel, and assembles them together compactly, and can be directly installed on the crankshaft between the engine and the gearbox, or directly on the flywheel of the diesel engine Inside. It enables the car to automatically coordinate start / stop transitions, improving fuel efficiency. Due to the system's brushless stator and rotor design, the component parts of the system do not wear and tear and are therefore maintenance-free. [0003] At present, there have been some researches on the use of permanent magnet starter generators at home and abroad. Fo...

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Problems solved by technology

After searching by the applicant, the structure of the iron core, permanent magnet and winding configuration proposed by the present invention has not been retrieved at home and abroad.

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