Variable winding starter generator for automobile

Abstract

The invention provides a variable winding starter generator for an automobile. The variable winding starter generator for the automobile comprises a rotor core, a stator core, coils, a shaft, a shell and the like, and is characterized in that each stator electrode is provided with a centralized coil with (m) turns and a centralized coil with (n) turns; when the variable winding starter generator for the automobile serves as a starter, all the coils on the stator electrodes with the same phase are serially connected to one another by selector switches to form a phase armature winding; after each phase armature winding is connected with an asymmetrical half-bridge converter with diodes, the phase armature winding can electrically run in a switch reluctance machine mode; and when the variable winding starter generator for the automobile serves as a generator, the coils with the (n) turns on all the stator electrodes are serially connected to one another to form an exciting winding, the coils with the (m) turns on the stator electrodes with the same phase are serially connected to one another or connected to one another in parallel to form a phase armature winding, and the starter generator generates power and runs in an electro-magnetic doubly salient generator mode. By the variable winding starter generator, the advantage of high efficiency of a switch reluctance machine and the advantage of easiness in voltage adjustment and control of an electro-magnetic doubly salient generator can be effectively utilized.

Description

technical field [0001] The invention relates to a variable winding starter generator for automobiles, belonging to the technical field of automobile motors and electrical appliances. Background technique [0002] The starter generator can not only be used as a motor to start the engine, but also can be used as a generator to supply power to electrical equipment. It is a key component of new energy-saving vehicles such as hybrid vehicles and idle stop vehicles. With the development of automobile technology, starter generator technology is more and more used in automobiles. [0003] But Darwin pointed out: survival of the fittest. Only starter generators that are suitable for both the starting environment and the power generation environment are competitive. Taking a traditional gasoline engine as an example, the starting speed of the engine is about 200r / min, and the idle speed of the engine after starting is about 700r / min, and the normal speed after starting is above 1500...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the defect that current starter generators cannot have high performance in both low-speed starting and high-speed power generation states, the present invention proposes a variable-winding starter generator for automobiles.

[0009] Another object of the present invention is to solve the problem that the magnetic flux amplitude of each phase of the traditional electric excitation generator is difficult to be equal by configuring the excitation winding on each stator pole

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