Motor energy-saving transformation method based on operation condition of three-phase asynchronous motor

Abstract

Disclosed is a motor energy-saving transformation method based on the operation condition of a three-phase asynchronous motor. The energy-saving transformation is completed by the steps of motor operation condition test, motor operation parameter estimation, motor disassembly, motor original winding removal, stator core and winding data measurement, stator winding design, fabrication, discharge, stator and rotor assembly and the like. The variable loss of the motor is reduced while the load rate of the highest efficiency point is close to the actual load rate after the transformation, so thatthe best energy-saving effect is achieved; the original parts of the motor are furthest utilized to realize the comprehensive utilization of resources and the circular economy; and the efficiency andthe power factor can be improved without reducing the torque after the motor is transformed.

Description

technical field [0001] The invention relates to a method for energy-saving transformation of Y series three-phase asynchronous motors based on the actual operating conditions of the motors. Background technique [0002] At present, energy saving and consumption reduction is a basic national policy of our country, but Y series motors that cannot meet the energy efficiency standard of GB18613-2012 are widely used in various industrial systems in our country. The use of this type of motor has the characteristics of high energy consumption and large quantity. , Take the method of replacing with a high-efficiency motor, which not only takes a long time and requires a large investment, but also causes a waste of resources. Therefore, energy-saving transformation of these motors is a more desirable way. At present, the main methods for energy-saving transformation of high-energy low-voltage motors are: 1. Replace the windings and use 30-degree phase-band windings. Second, replace...

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Problems solved by technology

[0003] These methods can reduce the loss of the motor, but there are also disadvantages such as complex process, difficult construction, heavy transformation workload, low relative magnetic permeability of the magnetic slot, ineffective effect, and high transformation cost.

The most important motor is to save electricity by improving its operating efficiency. Even if a high-efficiency motor operates under harsh conditions, it will not achieve good results.