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Rotor of synchronous induction motor and its manufacturing method

An induction motor and rotor technology, which is applied in the manufacture of stator/rotor body, magnetic circuit rotating parts, magnetic circuit shape/pattern/structure, etc., can solve the performance degradation of synchronous induction motor, the easy generation of cracks in permanent magnets, and the loss of aluminum materials. and other problems, to achieve the effect of improving the reliability of electricity, preventing cracks and reducing losses

Inactive Publication Date: 2003-07-02
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During die-casting, due to the effect of pressure, the permanent magnets are prone to cracks when they are impacted, which not only causes the loss of aluminum materials, but also reduces the performance of the synchronous induction motor.

Method used

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  • Rotor of synchronous induction motor and its manufacturing method
  • Rotor of synchronous induction motor and its manufacturing method
  • Rotor of synchronous induction motor and its manufacturing method

Examples

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Embodiment Construction

[0019] The embodiments of the present invention are further described in detail below: a synchronous induction motor is composed of a stator and a rotatable rotor that is spaced from the stator. The stator is composed of a stator core 2 and a plurality of stator slots 6 . The stator slots 6 are formed at regular intervals inside the stator core, and may be wound with stator coils.

[0020] The rotor consists of a rotor core 4 , secondary conductors 10 , permanent magnets 12 and flux walls 20 . There is a shaft 8 of a synchronous induction motor inside the rotor core 4; the secondary conductor 10 is arranged on the outer periphery of the above-mentioned rotor core 4, so that the rotating speed of the rotor is increased to the synchronous speed, and the permanent magnets 12 that generate magnetic force are inserted in the secondary conductor at a certain interval. Between the conductor 10 and the rotor core 4. In order to prevent leakage of magnetic flux, a magnetic flux wall ...

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Abstract

A rotor of synchronous induction motor is composed of iron core, secondary conductor, permanent magnet and magnetic flux wall. A technology for manufacturing said rotor includes punching core sheets, making iron core, inserting permanent magnets, sticking side plates at both sides of iron core, and die casting of molten aluminium. It can prevent molten aluminium from flowing toward magnetic flux wall and permanent magnets.

Description

technical background [0001] The invention relates to a synchronous induction motor, in particular to a rotor with a die-casting secondary conductor in the synchronous induction motor and a manufacturing method thereof. Background technique [0002] The main difference between a general synchronous induction motor and an asynchronous motor is that permanent magnets are installed in the synchronous poles. It is driven by the reluctance torque generated between the permanent magnet and the stator. Because synchronous induction motors do not require additional position sensors or drivers, and because there is no current in the conductors when the rotor is running at synchronous speed, power loss is reduced and the efficiency of the motor is improved. Therefore, synchronous induction motors will replace asynchronous motors as power sources in household appliances and other product fields. [0003] figure 1 is a cross-sectional view of a prior art synchronous induction motor. ...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K15/03
Inventor 金泰亨
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD