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Rotary electric machine with compensation of the armature magnetic reaction

A technology of rotating electrical machines and magnetic reactions, which is applied in the direction of electrical components, electromechanical devices, and synchronous machine parts, etc., and can solve the problems of being unsuitable for motor vehicles, extremely strict constraints on weight, compactness, and cost, etc.

Active Publication Date: 2012-04-11
VALEO EQUIP ELECTRIC MOTEUR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above solution can provide satisfactory compensation for the armature magnetic reaction in rotating electric machines, but it is not suitable for the motor vehicle field, where weight, compactness and cost constraints are extremely strict

Method used

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  • Rotary electric machine with compensation of the armature magnetic reaction
  • Rotary electric machine with compensation of the armature magnetic reaction
  • Rotary electric machine with compensation of the armature magnetic reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] figure 1 The structure of a rotating electric machine 1 of the type having salient poles is shown in simplified form. The motor 1 includes a stator 10 and a rotor 11 without a current compensation device.

[0026] The stator 10 is provided with a plurality of notches 101 designed to receive stator coils (not shown). The rotor 11 includes four pairs of magnetic poles having north (N) poles and south (S) poles, including magnetic poles S110 , N110 , S111 , N111 , S112 , N112 , S113 and N113 .

[0027] The excitation coil 114 is provided in the rotor 11 of the motor 1 , and includes eight series-connected windings, E0 to E7 , which are respectively positioned at the positions of the eight salient poles of the motor 1 . The excitation current lex supplies the excitation coil 114 by generating a magnetic field of the desired polarity at the locations of the poles S110, N110, S111, N111, S112, N112, S113 and N113.

[0028] When Motor 1 is running in alternator mode and is ...

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PUM

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Abstract

The machine of the invention includes an inductor (11), an armature (10) and means for compensating the armature magnetic reaction. According to the invention, the means for compensation the armature magnetic reaction includes at least one permanent magnet (AC) implanted in a pole of the inductor. According to one particular embodiment, the compensation means includes a magnet implanted in each of the inductor poles. According to another embodiment, the compensation means includes two magnets implanted in each of the inductor poles. The machine may comprise surface or buried compensation permanent magnets.

Description

technical field [0001] The invention relates to a rotating electrical machine, such as an alternator, starter, or alternator-starter, for a motor vehicle. More specifically, the invention relates to a rotating electric machine equipped with means for compensating the armature magnetic reaction. Background technique [0002] The phenomenon of armature magnetic response is known to those skilled in the art. Armature magnetic reaction occurs when current circulates in the armature of a rotating electrical machine. [0003] Taking the example of an alternator for a motor vehicle, where the armature is the stator of the motor and the inductor is its rotor, the armature magnetic reaction occurs when the alternator is in use and draws current. The stator coils in which the current circulates then generate a so-called armature reaction field, which can cause the magnetic field of the inductor to saturate and drop the field. Thereafter, the electromagnetic force (emf) is distorted...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K23/02
CPCH02K23/02H02K23/04H02K23/22H02K21/04
Inventor J-C.米波L.李L.科比兰斯基A.福齐亚
Owner VALEO EQUIP ELECTRIC MOTEUR