Special-winding energy-saving three-phase asynchronous motor

A three-phase asynchronous, special winding technology, which is applied in the field of electric motors, can solve the problems of inconspicuous energy saving, fluctuations in the rate of increase, and increased production costs, and achieve good starting performance, elimination of magnetic potential, and improved use efficiency.

Inactive Publication Date: 2009-04-15
JIANGSU DAZHONG ELECTRIC MOTOR
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Problems solved by technology

The most basic way to improve the efficiency of motors is to use high-quality low iron loss and high magnetic permeability materials, and use more effective main materials such as magnetic conductivity and conductivity to achieve the goal. However, in recent years, the price of raw materials in my country has fluctuated. Effective materials, not only increase the production cost, but also the effect of saving energy is not obvious

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  • Special-winding energy-saving three-phase asynchronous motor

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[0009] Taking the Y2-180M-4-pole-18.5KW motor as an example, the number of stator slots is 48, the number of magnetic poles is 4, the number of coils per slot is 36 turns, and the number of slots per pole and phase is 48 / (4×3) = 4. It can be seen from the attached drawings that V1, U1, and W1 in the figure are the incoming wire terminals, V2, U2, and W2 are the outgoing wire ends, the leftmost end is the first slot, and the rightmost end is the 48th slot. Equal-turn winding, the whole pitch is a single-layer winding, and the short pitch is a double-layer winding. The turns of the upper and lower coils of the double-layer winding are unequal turns. The 11th slot in the figure is a single-layer 36 turns, and the 12th slot is a double-layer. The lower layer is 0.55×36=20 circles, the 13th slot is the double-layer lower layer 0.45×36=16 circles; the 10th slot is the single-layer 36 circles, the 9th slot is the double-layer lower layer 0.55×36=20 circles, the 8th slot Be the lower ...

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Abstract

The invention discloses an energy-saving three-phase asynchronous motor of a special winding, comprising a stator winding which is embedded in a stator channel; the stator winding is an unequal-turn winding, with single-layer winding for whole distance and dual-layer winding for short distance; the turn of the upper layer and the lower layer of the coils of the dual-layer winding is unequal. By adopting the structure, the motor can weaken and eliminate the magnetic potential of high harmonic, reduces the electromagnetic noise, decreases the single-side magnetic pulling force, so as to reduce the vibration, can improve the magnetic potential of fundamental wave and reduce the additional loss; the reduction of the pitch leads the starting performance of the motor to be better, reduces the copper dosage, reduces the copper loss, lowers the temperature increment of the winding and improves the usage efficiency of the motor.

Description

technical field [0001] The invention relates to a motor technology, in particular to an energy-saving three-phase asynchronous motor with a special winding. Background technique [0002] With the rapid development of my country's industrial economy, energy consumption is also expanding simultaneously. According to the grand plan of the country's "Eleventh Five-Year Plan", energy conservation and emission reduction is an important measure for all people to work together. The electric motor is the basic power source of all mechanical equipment, and its power consumption accounts for about 2 / 3 of the total industrial power consumption. Therefore, reducing the additional loss of the motor to improve efficiency and saving energy is an urgent and urgent issue related to the development of the national economy in our country. arduous task. The most basic way to improve the efficiency of motors is to use high-quality low iron loss and high magnetic permeability materials, and use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/12H02K3/12
Inventor 王荷芬朱银波
Owner JIANGSU DAZHONG ELECTRIC MOTOR
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