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Synchronous rotary electric machine having a double excitation rotor

A rotating electrical machine, dual excitation technology, applied in synchronous machines, synchronous machine parts, magnetic circuit rotating parts and other directions, can solve the problem of motor demagnetization and other issues

Active Publication Date: 2013-04-24
VALEO EQUIP ELECTRIC MOTEUR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, motors with excitation caused by permanent magnets only exhibit flux-out problems

Method used

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  • Synchronous rotary electric machine having a double excitation rotor
  • Synchronous rotary electric machine having a double excitation rotor
  • Synchronous rotary electric machine having a double excitation rotor

Examples

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Embodiment Construction

[0025] figure 1 The structure of Embodiment 1 of a rotating electric machine with double excitation including a stator 10 and a rotor 11 according to the present invention is shown. The rotor 11 of the electric machine 1 comprises a plurality of alternating north and south salient poles formed by a plurality of permanent magnets PM and a plurality of field coils EC.

[0026] A specific embodiment of such an electric machine according to the invention is, for example, an electric motor / generator with 8-10 KW for application in motor vehicles of the type known as "mild hybrid". In its electric motor mode of operation, such an electric machine can be designed for starting the internal combustion engine, torque assistance of the internal combustion engine and low speed electric traction of the vehicle. In its generator mode of operation, the electric machine can operate in normal alternator mode or in regenerative braking mode.

[0027] A specific form of embodiment of this mach...

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Abstract

The invention relates to a machine (1) having a rotor (11) including permanent magnets (PM) and field coils (EC). The magnets are housed in first axial recesses (El) distributed in a circumferential portion of the magnetic body, thus defining circumferential polar sections. The coils are housed in second axial recesses (E2) distributed in an intermediate portion of the magnetic body and defining polar teeth (RT). According to the invention, the circumferential polar section includes a third recess (E3) having a maximum width at the top thereof, and the ratio of the maximum width of the third recess to a pole width of the circumferential polar section has a value of around 0.13 mm to around 0.44 mm.

Description

technical field [0001] The invention relates to a synchronous rotating electrical machine having a rotor equipped with permanent magnets and field coils. More particularly, the invention relates to electric machines of this type for applications such as electric traction motors and / or generators in electric vehicles and hybrid motor vehicles. Background technique [0002] Due to their increased performance in terms of specific and volumetric power output, today synchronous permanent magnet electric machines find widespread application in the field of motor vehicles. Furthermore, the large-scale availability of rare earth permanent magnets with acceptable economics makes these electric machines a viable option for new generations of motor vehicles. [0003] These motors can be produced in a wide range of powers and speeds and are used in "all electric" types of vehicles as well as in low CO 2 Applications are found in emissions vehicles. [0004] A "mild hybrid" applicatio...

Claims

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Application Information

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IPC IPC(8): H02K21/04H02K1/27
CPCH02K21/042H02K1/223H02K2213/03H02K21/38
Inventor J-C·马特J-C·米波L·李A·福吉亚
Owner VALEO EQUIP ELECTRIC MOTEUR
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