Three-phase AC asynchronous motor for YDAX series of electric automobiles

An asynchronous motor and electric vehicle technology, applied in the field of electric motors, can solve the problems of increasing the technical difficulty of design and development and the cost of design and development

Inactive Publication Date: 2010-10-13
NANYANG EXPLOSION PROTECTION XINPU ELECTRIC MOTORCO
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  • Application Information

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Problems solved by technology

This will inevitably increase the technical difficulty and cost of design and developme...

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  • Three-phase AC asynchronous motor for YDAX series of electric automobiles
  • Three-phase AC asynchronous motor for YDAX series of electric automobiles
  • Three-phase AC asynchronous motor for YDAX series of electric automobiles

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Embodiment Construction

[0023] like figure 1 The shown three-phase AC asynchronous motor for YDAX series electric vehicles has a casing 4, a stator and a rotor. The casing 4 is a cast aluminum alloy casing made by an extrusion die process, which satisfies the classification of the extrusion die of the machine base. Require. The slenderness ratio of the motor is 1.3-6.0. Because the motor is slender, the moment of inertia and peripheral speed of the rotor are small, but it is beneficial to the motor with a higher speed. The rated frequency of the motor for electric vehicles is generally 80-200Hz, so The volume of the motor with the same capacity is much smaller than that of ordinary motors when it is designed, which is only equivalent to 1 / 2 to 1 / 3 of the motor with the same specification. The cooling fins 2 on the casing are distributed vertically and evenly around the circumference of the machine base. The outlet 5 is located at the rear end of the machine base. The outlet hole is threaded and conn...

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Abstract

The invention discloses a three-phase AC asynchronous motor for YDAX series of electric automobiles, which is provided with a machine shell, a stator and a rotor, wherein the slenderness ratio of the motor is 1.3-6.0, heat radiating fins on the machine shell are vertically and uniformly distributed on the circumference of an engine base, and a wire exit is arranged at the rear end of the engine base; the rotor has two shafts; a magnetic permeability material adopts a low-loss cold rolled silicon steel plate which has reasonable electromagnetic load design so that the efficiency is 1-5 percenthigher than that of a common high-efficient motor; an air gap between the stator and the rotor is increased by 0.3-0.4 times, slot combination adopts 36/28 or 36/33 or 54/44 or 72/64, the slot shape of the rotor adopts a pear-shaped round bottom or pear-shaped flat bottom or convex symmetrical or asymmetrical slot shape, and three-phase windings of the motor adopt a Y-shaped connection method with a maximum parallel branch; a class insulation IBGT (Insulated Gate Bipolar Transistor) insulation system is adopted, and a stator core winding is manufactured by hopper round wires special for a QP-2/200 variable frequency motor. Compared with the prior art, the motor has safe and reliable running, small vibration, low noise, large temperature rise margin and equal output torque with that of a petrol engine, and completely meets the requirements of the electric automobiles.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a three-phase AC asynchronous motor for YDAX series electric vehicles Background technique [0002] Entering the 21st century, energy crisis and environmental pollution are two major problems faced by countries all over the world. How to alleviate and ultimately solve the contradiction between energy supply and demand, how to improve the increasingly severe environmental conditions, scientists from all over the world are focusing on the important energy consumers and major environmental polluters - automobiles. According to my country's industrial planning policy of environmental protection, energy saving and emission reduction, it is imperative to replace fuel vehicles with electric vehicles. Electric vehicles use an AC drive system consisting of an electric motor, a battery, and a controller to replace the traditional fuel-based vehicle engine drive system. The development of ...

Claims

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Application Information

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IPC IPC(8): H02K17/16H02K11/00H02K15/14H02K15/12H02K11/25
CPCY02T10/641Y02T10/64
Inventor 李秀芳马立秋李宗杰王文广
Owner NANYANG EXPLOSION PROTECTION XINPU ELECTRIC MOTORCO
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