Composite permanent-magnet invisible magnetic pole and brushless electromagnetic hybrid excitation driving motor

A technology of invisible magnetic pole and hybrid excitation, applied in synchronous motors with stationary armatures and rotating magnets, electric components, magnetic circuit rotating parts, etc. problem, to achieve the effect of less magnetic flux leakage

CN105811704AInactive Publication Date: 2016-07-27SHANDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-07-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a composite permanent-magnet invisible magnetic pole and brushless electromagnetic hybrid excitation driving motor, and belongs to the technical field of a motor electrical device of an electric vehicle. The hybrid excitation driving motor comprises a front end cover, a rear end cover, an enclosure, a rotor and a stator, wherein rectangular permanent-magnet steel is separately embedded into a radial rectangular groove and an arc groove in a rotor iron core, the permanent-magnet steel can be effectively prevented from generating irreversible demagnetization under the effect of armature reaction of impact current and is enabled not to loss magnetism, a magnetic field in an air gap of a driving motor is jointly provided by the permanent-magnet and an electric excitation magnetic winding, the generated magnetic field directly faces the air gap, and less magnetic leakage is achieved.
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Description

technical field

[0001] The invention provides a composite permanent magnet invisible magnetic pole and brushless electromagnetic hybrid excitation drive motor, which belongs to the technical field of electric vehicle motors and appliances. Background technique

[0002] At present, the rotors of the permanent magnet drive motors used in electric vehicles mostly adopt the permanent magnet external embedded structure, such as the existing technology, patent name: brushless DC motor rotor, patent number: ZL200920116549.1, discloses the following technical solutions, including the rotor Iron core, rotating shaft and permanent magnet. The rotor iron core is composed of punched sheets and connected together. The rotating shaft and the rotor iron core are fixedly connected. There are even numbers of T-shaped wedges evenly distributed on the outer surface of the rotor iron core. Adjacent T-shaped wedges Slots are formed between the blocks, and the permanent magnets are correspondingl...

Examples

Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings:

[0013] The composite permanent magnet invisible magnetic pole and brushless electromagnetic hybrid excitation drive motor is composed of a front end cover 9, a rear end cover 1, a casing 3, a hybrid excitation rotor, and a stator 4. It is characterized in that: the hybrid excitation rotor is composed of a carbon brushless slip ring structure. It is composed of claw pole type electric excitation rotor and composite permanent magnet invisible magnetic pole rotor;

[0014] The composite permanent magnet invisible pole rotor is composed of a shaft 2, a rectangular permanent magnet steel 8, a tile permanent magnet steel 5, a rotor iron core 6, and a pear-shaped slot magnetic isolation air gap 7. The rotor iron core 6 is evenly distributed with an even number of penetrating rotors. The radial rectangular groove with the thickness of the iron core 6, the outer end of the radi...