Hybrid excitation permanent magnet motor for wireless transmission and tooth harmonic excitation

A wireless transmission and hybrid excitation technology, applied in the field of electric motors, can solve the problems of reducing the reliability of motor operation, difficulty in adjusting the air gap magnetic field, and increasing the maintenance of the motor, so as to achieve the advantages of optimizing the design, improving the reliability and response speed, and improving the structure. simple effect

Active Publication Date: 2011-09-14
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of permanent magnet motors is that it is difficult to adjust the air gap magnetic field, which limits the application of permanent magnet motors to a certain extent.
However, since the field

Method used

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  • Hybrid excitation permanent magnet motor for wireless transmission and tooth harmonic excitation
  • Hybrid excitation permanent magnet motor for wireless transmission and tooth harmonic excitation
  • Hybrid excitation permanent magnet motor for wireless transmission and tooth harmonic excitation

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Embodiment

[0027] Depend on figure 1 , 2 , 3 as can be seen, the present invention adopts the hybrid excitation permanent magnet motor of the tooth harmonic excitation of wireless transmission, and stator and rotor are housed in casing 1, and rotating shaft 6 passes through rotor iron core 7 central holes and is fixed with rotor iron core 7; Rotating shaft 6 passes through The bearing 5 is connected with the casing 1; the stator is composed of the stator winding 3 distributed in the groove 9 opened along the circumferential direction on the stator core 2, and the casing 1 and the stator core 2 are fixed. The rotor consists of permanent magnets 4 and rotor windings 8 arranged on the rotor core 7; The rotor tooth harmonic winding 10 and the rotor excitation winding 11 are connected with the chopper circuit 13 through the diode rectifier circuit 12, and the driving signal of the switching device in the chopper circuit 13 is obtained through the wireless receiving module 14; the stator wind...

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Abstract

The invention discloses a hybrid excitation permanent magnet motor for wireless transmission and tooth harmonic excitation in the technical field of motors. A stator and a rotor are arranged in a shell; a rotating shaft passes through a central hole of a rotor core and is fixed with the rotor core; the rotating shaft is connected with the shell through a bearing; a stator winding corresponds to apermanent magnet and a rotor exciting winding to generate electromagnetic induction; a rotor tooth harmonic winding and the rotor exciting winding are connected with a chopper circuit through a dioderectifying circuit; a driving signal of a switching element in the chopper circuit is acquired through a wireless receiving module; an excitation control system outputs a pulse signal to a wireless transmitting module, transmits the pulse signal to the wireless receiving module on the rotor through the wireless transmitting module, controls the on/off of the switching element in the chopper circuit and provides the needed exciting current for the rotor exciting winding; therefore, an air-gap field and the output voltage of the stator winding are adjusted. Compared with the prior art, the hybrid excitation permanent magnet motor has no electric brush, collecting ring, additional air gap or axial magnetic circuit, is simple in structure, low in flux leakage, low in electric excitation loss and high in motor efficiency, and has high capacity of adjusting a main field.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a hybrid excitation permanent magnet motor with wireless transmission and tooth harmonic excitation. Background technique [0002] Compared with the electric excitation motor, the permanent magnet motor has many advantages: no excitation winding and DC excitation power supply are required, brushes and slip rings are eliminated, and the brushless motor is realized. Therefore, the permanent magnet motor has a simple structure and reliable operation ; Since there is no excitation loss in the permanent magnet motor, the efficiency of the motor is improved; in addition, the permanent magnet motor also has the advantages of small size, light weight, and flexible structure. Therefore, permanent magnet motors are widely used in fields such as industry, civil, military and aerospace. However, the disadvantage of permanent magnet motors is that it is difficult to adjust the air gap magneti...

Claims

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Application Information

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IPC IPC(8): H02K21/14H02K11/00H02K1/26
Inventor 王善铭夏永洪黄劭刚王祥珩苏鹏声
Owner TSINGHUA UNIV
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