Switched reluctance motor with electromotion and power generation conversion function used for electric vehicle

Abstract

The invention discloses a switched reluctance motor with an electromotion and power generation conversion function used for an electric vehicle. The switched reluctance motor has a rotor-stator doubly salient structure. On the basis of not changing the working principle of the switched reluctance motor, an independent exciting winding and an external control circuit thereof are arranged on a rotor salient pole and the exciting winding draws power through a collector slip ring; and when in electromotion, a dip switch thereof is switched off so that a rotor winding is unloaded; when the motor obtains reaction force by the brake, the downgrade and the like of a vehicle, a master control system is fed back by a brake signal, switches off a drive circuit by a control circuit, simultaneously switches to close a charger and a circuit between the charger and a storage battery, and simultaneously switches to close the circuit between the collector slip ring and the storage battery. In such a way, the storage battery supplies the power to the exciting winding through the collector slip ring so that the rotor is converted into an excitation field of a power generator; a rotational rotor excitation field generates the power by performing alternating excitation on the armature winding of the original stator; and therefore, a real function of double purposes of electromotion and power generation on one machine is realized.

Description

technical field [0001] The invention belongs to the field of electromechanical integration, and relates to a switched reluctance motor for electric vehicles with functions of converting electric power and power generation. Background technique [0002] At present, almost all electric vehicle motors on the domestic market are permanent magnet motors, and switched reluctance motors with high performance are rarely used. Although permanent magnet motors have certain power generation functions, they can directly generate electricity under the action of reaction force. Conversely, when generating electricity, because its own structure is quite different from the structure and principle of the generator, its power generation efficiency is very low, and it has almost no use value. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a switched reluctance motor for electric vehicles with the function of converting electric power and power generation...

AI Technical Summary

Problems solved by technology

[0002] At present, the electric vehicle motors on the domestic market are almost all permanent magnet motors, and the switched reluctance motors with high performance are still used very little; although the permanent magnet motor itself has a certain power generation function, it is directly affected by the reaction force. Conversely, when generating electricity, its own structure and the structure and principle of the generator are quite different, so its power generation efficiency is very low, and it has almost no use value.

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