Tangential magnet-steel hybrid exciting synchronous motor

A hybrid excitation synchronous and synchronous motor technology, applied to synchronous motors for single-phase current, etc., can solve the problem of low electric excitation efficiency, and achieve the effect of high electric excitation efficiency, best energy saving effect, and optimized design.

Inactive Publication Date: 2005-12-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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Problems solved by technology

However, due to the existence of axial magnetic circuit, the efficiency of electric excitation is low

Method used

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  • Tangential magnet-steel hybrid exciting synchronous motor
  • Tangential magnet-steel hybrid exciting synchronous motor
  • Tangential magnet-steel hybrid exciting synchronous motor

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Embodiment Construction

[0019] Depend on figure 1 It can be seen that the tangential magnet steel hybrid excitation synchronous motor of the present invention is composed of a common tangential magnet steel permanent magnet excitation synchronous motor in the middle part and electric excitation parts on both sides. That is, in the ordinary tangential structure permanent structure composed of the stator composed of the armature winding 4 and the armature core 5 and the rotor equipped with the rotating shaft 9 and composed of the N pole yoke 11, the S pole yoke 12 and the tangentially magnetized permanent magnet 7 On the basis of the synchronous motor, the N-pole yoke 11 and the S-pole yoke 12 of the rotor are respectively extended to both ends to form a image 3 structure. Corresponding to the extension of the rotor, the stator is provided with an excitation winding 3 and a corresponding annular excitation bridge 2 . The above-mentioned structures are all installed in the casing 1, and the casing 1 ...

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Abstract

The invention extends N pole yoke, S pole yoke to two ends based on ordinary permanent magnetism synchro motor in tangential structure composed of stator including armature winding and armature core, and rotor including N pole yoke, S pole yoke and tangential magnetized permanent magnetism. Excitation winding and relevant annular excitation magnetic bridge are setup at place of stator corresponding to the extended part of the rotor. The structure said above is installed inside case made from magnetic material. Comparing the said ordinary synchro motor. The disclosed motor possesses advantages: small additional air gap and magnetic leakage, high efficiency of electric excitation, easy to be designed to reach optimal effect, preventing magnet steel from demagnetization risk. The invention is applicable to voltage adjustable generator and wide speed adjustable motor.

Description

technical field [0001] The invention relates to a hybrid excitation synchronous motor technical background [0002] In 1988, Professor Balagunov of the Moscow Aeronautics Institute proposed the structure of a parallel magnetic potential hybrid excitation synchronous generator. The stator is the same as the ordinary synchronous motor, and the rotor is divided into two parts, one part is permanent magnet excitation, and the other part is electric excitation. The characteristics of the motor: the electric excitation part is a claw pole structure, there are many additional air gaps, the axial magnetic circuit has large magnetic flux leakage, and the electric excitation function is restricted. [0003] Dr. T.Mizuno of Japan proposed an axial / radial magnetic circuit hybrid excitation synchronous generator. The stator armature winding of the motor is a common three-phase symmetrical winding. The stator core is divided into two sections by the stator annular DC excitation winding....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K19/12
Inventor 陈志辉孟小利张卓然严仰光朱德明
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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