On-site processing method for improving power factor of low-voltage asynchronous motor and saving electricity

An asynchronous motor and power factor technology, which is applied to asynchronous induction motors, motor control, electric components, etc., can solve the problems of insufficient circuit safety and low power factor of asynchronous motors, so as to reduce reactive power loss and avoid low and good power factor. Effects of running characteristics

Pending Publication Date: 2022-05-10
宁夏宏丰特种合金有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a local processing method for improving the power factor of low-voltage asynchronous motors and saving electricity in order to solve the problems of low power factor of asynchronous motors and insufficient circuit safety during the operation of asynchronous motors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for improving the power factor of a low-voltage asynchronous motor, comprising the steps of:

[0027] Step 1. Install a centrifugal switch on the motor running circuit;

[0028] Step 2, connecting the starting capacitor in series on the centrifugal switch circuit;

[0029] Step 3, parallel running capacitors on the motor running circuit;

[0030] Step 4. Install the voltage regulator after the running capacitor and starting capacitor;

[0031] Step five, install primary and secondary windings on the motor running circuit.

[0032] In the present invention, when the rotational speed of the motor reaches about 80% of the rated rotational speed, the contact of the centrifugal switch will be disconnected, thereby cutting off the connection between the starting capacitor and the circuit. At this time, the motor current decreases, and the motor enters a normal In the running state, the starting capacitor only works during the starting process of the motor, and it ...

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Abstract

The invention discloses an on-site processing method for improving a power factor of a low-voltage asynchronous motor and saving electricity, which belongs to the technical field of asynchronous motors and comprises the following steps of: 1, mounting a centrifugal switch on a motor operation circuit; 2, connecting a starting capacitor in series on the centrifugal switch circuit; 3, connecting a running capacitor in parallel on a motor running circuit; 4, a voltage stabilizer is installed behind the operation capacitor and the starting capacitor; and 5, installing a main winding and a secondary winding on a motor operation circuit. According to the current operation state condition of the asynchronous motor, the current power factor of the asynchronous motor is calculated, the power factor needing to be improved is obtained, a proper capacitor is selected and arranged on the spot, an intelligent technology device is utilized, the device can be automatically switched according to the operation condition of the asynchronous motor, reactive power loss is reduced, and the power saving effect is achieved.

Description

technical field [0001] The invention relates to the technical field of asynchronous motors, in particular to an on-site processing method for improving the power factor of a low-voltage asynchronous motor and saving electricity. Background technique [0002] Induction motor, also known as "asynchronous motor", is a device in which the rotor is placed in a rotating magnetic field. Under the action of the rotating magnetic field, a rotating torque is obtained, so the rotor rotates. The rotor is a rotatable conductor, usually in the shape of a squirrel cage. The stator is the non-rotating part of the motor, and its main task is to generate a rotating magnetic field. The rotating magnetic field is not realized by mechanical means, but is passed through several pairs of electromagnets with alternating current, so that the nature of the magnetic poles changes cyclically, so it is equivalent to A rotating magnetic field. This motor does not have brushes or collector rings like a DC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/00H02K11/20H02K17/30H02H7/085H02H7/08H02P29/024H02P29/032
CPCH02K11/0094H02K11/20H02K17/30H02H7/0856H02H7/0859H02H7/0833H02P29/024H02P29/027H02P29/032
Inventor 樊宗庭
Owner 宁夏宏丰特种合金有限公司
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