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Cage Induction Rotor Core Transposition Speed ​​Regulation Method

A rotor core and cage-type technology, which is applied in the field of AC speed control transmission, can solve the problem of not being able to drive the load with stepless speed control, etc., and achieve the effect of excellent soft start function, cost reduction and prolonging service life

Active Publication Date: 2017-12-15
大庆晟博实科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing cage-type induction rotor that it is difficult to directly regulate its torque and current, so that the cage-type induction motor itself cannot drag the load for stepless speed regulation operation, the invention provides a cage-type induction rotor core transposition regulator This method can simply realize the direct torque control of the cage-type induction rotor, and enable the cage-type induction motor itself to have a stepless speed regulation function with high power and energy indicators, which can save energy for fans and water pumps with large quantities and wide areas. Retrofits provide applicable energy-saving technologies

Method used

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  • Cage Induction Rotor Core Transposition Speed ​​Regulation Method

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Embodiment Construction

[0019] The rotor core is stacked and fixed on multiple axial connectors by lamination of the large bird-shaped rotor groove silicon steel punching bird head in the positive direction. The length is 0.9 stator core length, which can make the The bird's head of the long laminations and punched sheets that induce positive AC potential on the rotor bar is reversely laminated and fixed on the axial connector, so that the rotor bar embedded in the bird's body part with slot insulation in the lower half slot The short laminations that induce reverse AC potential are composed of short laminations. The rotor core is 40% longer than the stator core and can slide axially on the axial guide groove on the surface of the middle section of the rotor shaft so that the forward and reverse laminations are in the stator. An independent integral rotor core with the inner side of the core transposed and transmitting torque. When the long laminations that induce positive AC potential on the rotor g...

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Abstract

A cage-type induction rotor iron core transposition speed regulation method capable of performing direct torque control on the cage-type induction rotor. It is realized by the following method: the silicon steel punches with large bird-shaped rotor grooves pressed and fixed on the axial connector are laminated into an independent rotor core, the bird head is stacked 80% in the forward direction, and the bird head is stacked in the opposite direction. Press 40% of the length of the stator core. The inner hole of the rotor core is directly axially slid and supported on the axial guide groove of the rotor shaft. The radial thrust bearing assembled at one end of the rotor core drags the axial displacement of the rotor core to change the positive direction. The length of the reverse laminations protruding into the stator core can change the level of positive and negative AC potentials at both ends of the rotor guide bar, change the size of the rotor torque current, and achieve direct torque control of the cage-type induction rotor, so that the AC induction motor can achieve high energy performance. The stepless speed regulation operation of the index. A new applicable technology is provided for the energy-saving transformation of fans and water pumps.

Description

technical field [0001] The invention relates to an AC speed-regulating transmission technology, in particular to a stepless speed-regulating method capable of transpositioning a rotor iron core through a control signal to realize direct torque control of a cage-type induction rotor of an AC motor. technical background [0002] The characteristics of the circuit structure of the DC motor are: the stator winding is a centralized DC excitation coil powered by DC, and the rotor winding is an AC torque coil structure whose commutation frequency is proportional to the rotor speed powered by the commutator, so the external DC motor can be used The DC voltage regulating equipment directly regulates the excitation current of the stator or the torque current of the rotor directly, and it is easy to realize high-performance stepless speed adjustment operation. The characteristics of the circuit structure of the AC motor are: the excitation current and the torque current share a three-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K17/16
Inventor 江允良
Owner 大庆晟博实科技有限公司
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