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Multiphase disc type hybrid excitation flux switching motor

A magnetic flux switching motor and hybrid excitation technology, applied in the directions of motors, magnetic circuits, electromechanical devices, etc., can solve problems such as affecting the excitation efficiency of the excitation winding, and achieve the effects of simple structure, improved utilization, and wide adjustment of the magnetic field range.

Pending Publication Date: 2019-12-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research shows that the adjacent permanent magnets of the traditional disc hybrid excitation flux switching motor are oppositely magnetized, and the field direction of the field winding in the same slot as the permanent magnet is the same as or opposite to the direction of the permanent magnet field, which affects the excitation to a certain extent. The excitation efficiency of the winding

Method used

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  • Multiphase disc type hybrid excitation flux switching motor
  • Multiphase disc type hybrid excitation flux switching motor
  • Multiphase disc type hybrid excitation flux switching motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see figure 1 , a disc-type hybrid excitation flux switching motor of the present invention is composed of a stator core 11, a rotor core 10, an armature winding 111, an excitation winding 112 and a permanent magnet 113; the stator 11 and the rotor 10 are made of magnetically conductive materials Composed and has an air gap; the stator 11 is provided with stator magnetic teeth 110, there are slots between the stator magnetic teeth 110, part of the slots are provided with permanent magnets 113, and the stator magnetic teeth 110 are alternately arranged with concentrated armature windings 111 and concentrated excitation winding 112. In the motor of this embodiment, m=3, n=1, k=1, q=1, wherein, m is the phase number of the motor, n is the number of motor units, and k is a phase armature winding in each stator motor unit The logarithm of the concentrated armature windings 111 connected in series, q is a coefficient determining the number of permanent magnets, and the value ...

Embodiment 2

[0052] Figure 4 It is a disc type hybrid excitation flux switching motor. In this embodiment, m=3, n=2, k=1, q=1. The difference from the motor in Embodiment 1 is that the number of motor units on the stator 11 of this embodiment is n=2. That is, the motor is a three-phase motor with three phases A, B, and C, and includes 2 motor units, each motor unit has k=1 pair of concentrated armature windings, and the number of stator 11 magnetically conductive teeth 110 is Ns =4*m*n*k=24; the number of concentrated armature windings 111 arranged in turn on the magnetically conductive teeth is 2*m*n*k=12, and each concentrated armature winding 111 spans two magnetically conductive teeth 110 , the adjacent concentrated armature windings 111 share one slot; 2*m*k*n=12 concentrated excitation windings 112 are arranged in turn in the remaining 2*m*k*n=12 slots, and each concentrated excitation winding 112 spans Two adjacent magnetically conductive teeth 110 share a slot for every two con...

Embodiment 3

[0057] Figure 7 It is a disc type hybrid excitation flux switching motor. In this embodiment, m=3, n=2, k=1, q=2. The difference from the motor of Embodiment 2 is that the number of permanent magnets 113 on the stator 11 of this embodiment is m*q=6, which are evenly embedded in the axial inner part of the excitation slot, and the interval between every two permanent magnets is 4*k* n / q=4 stator magnetically permeable teeth 110 . The magnetization direction of all the permanent magnets 113 is along the same circumferential tangent direction, and is opposite to the direction of the magnetic field generated by the excitation coil in the excitation slot.

[0058] In this example, if Figure 8 As shown, the number and arrangement of motor windings are the same as those in Embodiment 2, and the flux linkage change and counter electromotive force in the three-phase windings have the same characteristics as Embodiment 2. The number of permanent magnet blocks is doubled compared t...

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Abstract

The invention discloses a disc type hybrid excitation flux switching motor, which is composed of a stator iron core, a rotor iron core, armature windings, excitation windings and permanent magnets. The stator and the rotor are coaxially installed. A single stator iron core is provided with 4*m*k*n stator magnetic conductive teeth, and the stator is provided with m*q permanent magnets which are uniformly embedded in the outer sides of excitation grooves. The rotor iron core is provided with (2*m*k+ / -1)*n magnetic conductive teeth which are uniformly distributed along the circumference; m is thenumber of phases of the motor, n is the number of motor units, k is the number of pairs of concentrated armature windings connected in series with any phase of armature windings in each motor unit, and q is a positive integer (ensuring 4*k*n / q is a positive integer and is less than 2*k*n). The motor provides excitation magnetic flux through the permanent magnets and the excitation windings, not only has strong magnetic field adjusting capability, but also is small in the axial size, and is suitable for being applied to occasions requiring thin installation strictly, such as electric vehiclesand the like which require a wide speed adjusting range.

Description

technical field [0001] The invention relates to a disc-type hybrid excitation magnetic flux switching motor, which belongs to the technical field of motor manufacturing. Background technique [0002] With the development of new energy technology, motors, as the core components of rail transit, new energy vehicles and other fields, have been widely researched and applied. Since the armature current and excitation current of the DC motor can be independently adjusted, the speed regulation characteristics when used as a motor, or the output voltage stability when used as a generator are the most ideal among many motors. However, due to the existence of mechanical brushes and commutators in the structure of DC motors, it has disadvantages such as frequent maintenance and poor reliability, which limits its application range. The AC induction motor has a simple structure, no need for brushes, convenient maintenance, and high reliability. It has been widely used in the field of ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/03H02K1/24H02K16/00H02K16/02H02K16/04H02K3/02H02K3/28H02K1/17H02K1/14H02K1/16
CPCH02K29/03H02K1/24H02K16/00H02K16/02H02K16/04H02K3/02H02K3/28H02K1/17H02K1/146H02K1/16H02K2213/03Y02T10/64
Inventor 曹瑞武张学王凯王支业王业彬王秋岭
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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