An electric motor with additional inductive coils

Abstract

A motor with additional inductance coils comprises electromotor primary coils, a motor primary stator silicon steel sheet set, the additional inductance coils and additional silicon steel sheet sets. The motor primary coils are three sets of motor primary coils of a three-phase motor stator, the peripheries of three sets of the motor primary coils are respectively connected with the additional inductance coils in series, and the additional silicon steel sheet sets and motor primary stator silicon steel sheet set are adopted for closing magnetic circuits of the additional inductance coils. The additional silicon steel sheet sets of the additional inductance coils and the motor primary stator silicon steel sheet set are combined into a whole and form a common magnetic circuit for the additional inductance coils and a motor primary coil. The motor has the advantages that the additional inductance coils are connected, the impedance of the motor is increased, the currents of the motor are reduced, and therefore the output power of the motor is lowered and the energy is saved; the structure is simple and reliable, the cost is low, the energy-saving effect is remarkable, and the energy can be saved by more than 30%; the overkill phenomenon of the motor can be effectively changed.

Description

technical field [0001] The invention relates to the technical field of motor energy saving, in particular to an energy-saving motor with an additional inductance coil. Background technique [0002] There are 37 million fans and pumps in my country, and their power consumption accounts for 31% of the country's power generation and 40% of industrial power consumption. There is a great energy-saving potential in the power consumption of operation. [0003] The principle of selecting the rated power when applying the motor is: the selected rated power should be able to meet the power and torque requirements of the production machinery in each link of the drive (starting, speed regulation, braking, etc.) and use it on this basis The electric motor is fully utilized. The method of rated power selection is: according to the large and small change characteristics of the load (torque, power, current) when the production machinery is working, pre-select the rated power of the motor, ...

AI Technical Summary

Problems solved by technology

[0007] Using electromagnetic coupling speed regulators, frequency converters and other methods to save energy is remarkable, but the cost is high, and maintenance and control are complicated; other energy-saving methods have certain effects, but the energy-saving effect is generally less than 10%, and the effect is not ideal.

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