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AC brushless electro-magnetic starter generator employing concentrated windings

A technology of starting generators and concentrated windings, applied in windings, electromechanical devices, electrical components, etc., can solve the problems of increased friction between the rotating shaft and auxiliary bearings, shortened motor service life, increased difficulty, etc., and achieves small torque ripple and increased Low torque density, vibration and noise effects

Inactive Publication Date: 2016-05-11
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the operation of the above-mentioned generator, although the main winding and the levitation force winding are controlled separately, there is still an influence between the two radial degrees of freedom. This interference will affect the radial levitation performance and cause a large The noise increases the friction between the rotating shaft and the auxiliary bearing, increases the loss and shortens the service life of the motor. Although this problem can be solved by applying a compensating force that is equal to the disturbance force and opposite in direction, it makes the control more complicated. , increasing the difficulty of manufacturing

Method used

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  • AC brushless electro-magnetic starter generator employing concentrated windings
  • AC brushless electro-magnetic starter generator employing concentrated windings
  • AC brushless electro-magnetic starter generator employing concentrated windings

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Embodiment 1

[0026] Such as figure 1 Among them, the concentrated winding AC brushless electric excitation starter generator realized according to the present invention includes: rotor core 2, field winding 3, armature winding 4, and stator core 1 from inside to outside in the radial direction.

[0027] Stator slot structure such as figure 1 As shown, the field winding 3 and the armature winding 4 in the stator slot should be separated by interphase insulation. When off-line, the double-layer armature winding 4 should be placed first, and then the field winding 3 should be placed.

[0028] Among them, the stator and rotor of the brushless electric excitation AC starter generator of the present invention use 0.1--0.2mm silicon steel sheet as its material to reduce iron consumption.

[0029] The block diagram of the corresponding control drive system based on the brushless electric excitation starter generator is as follows: figure 2 shown. When starting, the armature winding 4 of the m...

Embodiment 2

[0031] The outer rotor motor structure based on the above electromagnetic principle can also accomplish the purpose of the invention. The structure diagram is as follows image 3As shown, 5 is the outer rotor core, 6 is the inner stator core, 3 is the field winding, and 4 is the armature winding. In addition, the outer rotor structure features a larger air gap radius and higher torque density

[0032] In this embodiment, an open slot stator and rotor punching structure is adopted;

[0033] The stator excitation winding 3 and the armature winding 4 are separated by interphase insulating materials, and the partitions are evenly placed in each stator slot, and the windings are all single-tooth winding concentrated windings;

[0034] The excitation winding 3 is controlled by a controllable DC power supply, and the armature winding 4 is controlled by a three-phase inverter during the starting process, and is switched to a rectifier circuit during power generation operation.

[00...

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Abstract

The invention discloses an AC brushless electro-magnetic starter generator employing concentrated windings. The AC brushless electro-magnetic starter generator is characterized by sequentially comprising a rotor core, a stator core, stator singe-tooth-wound concentrated exciting windings and stator single-tooth-wound concentrated armature windings from the inside to the outside along the radial direction, wherein the stator singe-tooth-wound concentrated exciting windings and the stator single-tooth-wound concentrated armature windings are evenly distributed into each stator slot; and the stator singe-tooth-wound concentrated exciting windings and the stator single-tooth-wound concentrated armature windings need to separate by an insulating material in each slot. According to the brushless electro-magnetic starter generator employing the concentrated windings achieved by the invention, the overall structure is very simple; processing and manufacturing can be finished by an existing technology; extra equipment does not need to purchase; and furthermore, the generator is very high in reliability and basically free of maintenance.

Description

technical field [0001] The invention belongs to the field of electric excitation starter motors, and more specifically relates to an AC brushless electric excitation starter generator with concentrated windings. Background technique [0002] The starter / generator uses the reversible principle of the motor to allow the on-board generator to also serve as the starter of the engine. Since the starter generator is close to the engine, the operating temperature is very high, which cannot satisfy the reliability and stability of the motor operation under the condition of increased load. In some specific applications, such as aeronautical starter generators, the following requirements are put forward for starter generators: 1. There is no permanent magnet, because the magnetic properties of permanent magnets are easily affected by temperature, and it is difficult to demagnetize under fault conditions, so permanent magnets The motor is basically not used; 2. Brushless, due to the h...

Claims

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Application Information

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IPC IPC(8): H02K29/03H02K3/52
CPCH02K29/03H02K3/522
Inventor 李健贾少锋曲荣海蔺梦轩
Owner HUAZHONG UNIV OF SCI & TECH
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