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Process for 380kW three phase communion asynchronous motor voltage boosting and transformation

An asynchronous motor, three-phase AC technology, used in the manufacture of motor generators, electric components, electrical components, etc., can solve the problems of low rated voltage, poor insulation performance, low operating efficiency, etc., to improve operating efficiency, improve technology, The effect of ensuring the quality of motor operation

Inactive Publication Date: 2011-04-13
HANGZHOU FUCHUNJIANG HYDROELECTRIC EQUIP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of low rated voltage, poor insulation performance, and low operating efficiency in traditional motors, and provide a method for boosting the voltage of a 380kW three-phase AC asynchronous motor, that is, the rated voltage is changed from the original The 6kY is changed to 10kV, and the capacity remains the same

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  • Process for 380kW three phase communion asynchronous motor voltage boosting and transformation
  • Process for 380kW three phase communion asynchronous motor voltage boosting and transformation
  • Process for 380kW three phase communion asynchronous motor voltage boosting and transformation

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Embodiment Construction

[0014] The technical solution of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0015] see figure 1 In this embodiment, under the condition that the number of motor stages, connection mode and parallel branch number remain unchanged, the voltage of the motor should be proportional to the number of turns of the winding and inversely proportional to the cross-sectional area of ​​the wire.

[0016] For example, the number of turns of the original stator coil of the motor is Z=14, the wire specification is 2.44×4.1, and the cross-sectional area is 10mm 2 , the number of turns per slot after transformation:

[0017] Z 1 =Z×U 1 / U=14×10000 / 6000=24 turns

[0018] Cross-sectional area of ​​wire after modification:

[0019] S 1 =S×U / U 1 =10×6000 / 10000=6mm 2

[0020] Therefore, the optional wire specification is 1.5×4.2.

[0021] It is also known that the rated current of the motor...

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Abstract

The invention relates to a process for motor electric tension transformation, especially a process for 380kW three phase communion asynchronous motor voltage boosting and transformation, which is characterized in the following three steps: tearing and recoiling stator winding and setting its conductor specs, verifying ampere density to make sure ampere density remain unchanged fore and after the aforementioned transformation, taking anti-corona treatment on the motor. The invention guarantees the magnetic density and temperature rising invariableness of all parts of the motor, and make the motor efficiency, power factor, starting torque and starting current all conform to original requirement.

Description

technical field [0001] The invention relates to a method for transforming the voltage of a motor, in particular to a method for boosting and transforming a 380kW three-phase AC asynchronous motor. Background technique [0002] With the rapid development of the national economy, the number of highly concentrated factories is increasing, and the user's requirements for the operation of the motor are also greatly improved. At present, there are still many motors that are traditional old-fashioned motors. Due to the limitations of the grid voltage and technical conditions at that time, the rated voltage of these motors is generally low, the insulation performance is poor, and the operating efficiency is low, which can no longer meet the needs of today's users. Therefore, A solution is urgently needed. Contents of the invention [0003] The purpose of the present invention is to solve the technical problems of low rated voltage, poor insulation performance, and low operating e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/00H02K15/04
Inventor 吴玉泉
Owner HANGZHOU FUCHUNJIANG HYDROELECTRIC EQUIP