Dual-mode electric vehicle drive motor

Abstract

The invention discloses a dual-mode electric vehicle drive motor which relates to the field of drive of various electric vehicles. A point on an armature of a series exciter is taken to confirm a reference point of an extension line on which the armature of the series exciter simultaneously becomes an armature of an alternating-current generator; an alternating-current boosting winding is distributed in an armature groove of the series exciter; one end of the boosting winding is connected to the reference point of the series exciter, and the other end is connected to a rectifying circuit; by the method, alternating current the amplitude value of which is higher than power supply voltage on the series exciter is directly obtained; controllable rectification is applied to the alternating current; and the rectified alternating current is directly fed to a power supply. The method realizes control on the rotating speed of the series exciter and efficient conversion on energy at work, and the series exciter also realizes the function of the alternating-current generator, therefore, a system comprises a set of independent series exciter loop and function and also comprises a set of independent alternating-current generator loop and function, and the two modes coexist and are mutually restricted and influenced to form the dual-mode motor.

Description

technical field [0001] A dual-mode electric vehicle drive motor relates to various electric vehicle drive fields. Background technique [0002] As a representative of new energy vehicles, electric vehicles have been put on the agenda of various countries and included in the priority research and development strategy due to the needs of environmental protection. The current drive motor mode used by electric vehicles is a representative product of typical mechatronics. Most of them use brushless AC and DC motors as the main body. The characteristic is that the motor technology must be highly combined with power electronics technology to achieve effective control of energy and speed during vehicle driving; due to the large number of high-end power electronic components used, this makes The electric drive and electric control parts of electric vehicles are complicated, which not only makes the cost high, but also produces additional power loss when power electronic components pr...

AI Technical Summary

Problems solved by technology

[0002] As a representative of new energy vehicles, electric vehicles have been put on the agenda of various countries and included in the priority research and development strategy due to the needs of environmental protection. The current drive motor mode used by electric vehicles is a representative product of typical mechatronics. Most of them use brushless AC and DC motors as the main body. The characteristic is that the motor technology must be highly combined with power electronics technology to achieve effective control of energy and speed during vehicle driving; due to the large number of high-end power electronic components used, this makes The electric drive and electric control parts of electric vehicles are complicated, which not only makes the cost high, but also produces additional power loss when power electronic components process and convert high-power AC and DC electric energy. The popularization of the system brings practical difficulties; under such a premise, we propose a dual-mode motor drive system here. The outstanding feature of the design of this dual-mode motor drive system is that it has the dual functions of both the motor and the generator in its work. It can work between the motor and the generator at the same time as required, and can obtain electrical energy as needed during operation and convert it into mechanical energy, while the vehicle can automatically use mechanical energy (kinetic energy) when decelerating, braking, or going downhill. It is natural and efficient to directly transform into electric energy storage, and its various electrical parameters have a very appropriate and natural coordination during operation. Many of the commonly used electric vehicle drive circuits currently rely on power electronic circuits to achieve "simulation functions". The dual-mode electric vehicle drive motor body can be directly realized, stripping the high dependence of the motor body on the power electronic circuit, maximizing the operating efficiency, improving the stability and reliability of the operation, and greatly reducing the cost of the vehicle and operation and maintenance quantity

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