Energy-saving three-phase asynchronous motor

A three-phase asynchronous, electric motor technology, applied in the field of electric motors, can solve the problems of inability to industrialize design and application, slow progress of cast copper rotor motors, etc.

Inactive Publication Date: 2019-12-17
北京融信雅德科技有限公司
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  • Summary
  • Abstract
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Problems solved by technology

[0006] For the above reasons, the progress of cast copper rotor motors is slow, and most of them are verification products, which cannot be designed and applied industrially.

Method used

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with specific embodiments, so as to help understand the content of the present invention.

[0014] 1. Design of cross-sectional area of ​​rotor guide bar

[0015] Cast copper rotor winding three-phase asynchronous motor, design conditions: 2 poles, 380V, 50Hz.

[0016] Design according to three powers of 1.1kw, 4kw, and 5.5kw, and control the cross-sectional area of ​​the copper rotor bar at 60-70% of the cross-sectional area of ​​the aluminum rotor bar with the same power and number of poles to obtain the rotor loss.

[0017] See Table 1 for the loss of rotors with different cross-sectional areas of cast copper and cast aluminum under different power, and see Table 2 for the power

[0018] Table 1: Loss reduction rate of cast copper rotor

[0019]

[0020] Table 2 Cast copper and cast aluminum rotor power values

[0021]

[0022] The actual test of the cast copper rotor motor designed accordi...

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Abstract

The invention discloses an energy-saving three-phase asynchronous motor which adopts a copper rotor winding and is characterized in that the cross-sectional area of the copper rotor winding guide baris 60-70% of the cross-sectional area of the same power cast aluminum rotor winding guide bar. The energy-saving three-phase asynchronous motor can better solve the contradiction of the current between normal operation and starting and has low design workload, low starting noise and stable operation.

Description

technical field [0001] The invention relates to a motor, in particular to a copper rotor three-phase asynchronous motor. Background technique [0002] The power consumption of industrial three-phase asynchronous motors in my country accounts for 50-60% of the total power generation. Squirrel-cage rotor three-phase asynchronous motors are widely used in industrial, agricultural and civil fields because of their reliable operation, convenient use, and simple maintenance. The efficiency of the motor is an important indicator to measure the level of motor design and manufacturing technology. If the use efficiency of the electric motors in use in our country can be increased by 3-5%, the annual power saving is equivalent to the annual power generation of 1.5 Three Gorges Power Stations. Therefore, it is very urgent to develop energy-saving electric motors when the demand for energy is increasing rapidly and the reserves of coal and oil are decreasing day by day. [0003] The sq...

Claims

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Application Information

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IPC IPC(8): H02K17/12H02K3/02H02K17/16
CPCH02K3/02H02K17/12H02K17/16H02K2213/03
Inventor 崔松梁栋李子琦杨大同张翼飞
Owner 北京融信雅德科技有限公司
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