Magnetic flux memory type magnetic gear composite motor

A composite motor and magnetic gear technology, applied in the direction of motors, electric vehicles, electrical components, etc., can solve the problems of poor magnetic modulation effect of the air gap magnetic field, and achieve the effects of improved magnetic modulation accuracy, simple control, and improved efficiency

Pending Publication Date: 2018-03-23
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the problem of poor magnetic adjustment effect of the air gap magnetic field of the traditional permanent magnet motor, and the invention provides a magnetic flux memory type magnetic gear composite motor

Method used

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  • Magnetic flux memory type magnetic gear composite motor
  • Magnetic flux memory type magnetic gear composite motor
  • Magnetic flux memory type magnetic gear composite motor

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specific Embodiment approach 1

[0020] Specific implementation mode one: see Figure 1 to Figure 5 This embodiment is described. In this embodiment, 1. A magnetic flux memory type magnetic gear composite motor, including an inner stator 1, an outer stator 2 and a cup-shaped rotor 3, the three are coaxially arranged and located in the casing 4, The cup rotor 3 is located between the inner stator 1 and the outer stator 2;

[0021] The inner stator 1 is fixed on the extension base 5 of the front cover of the casing 4, and the inner stator 1 is wound with an inner stator excitation winding 1-1;

[0022] There are air gaps between the inner stator 1 and the cup rotor 3, and between the cup rotor 3 and the outer stator 2;

[0023] The cup-shaped rotor 3 is fixed on the main shaft 6, and the main shaft 6 runs through the front and rear end covers of the casing 4 and the bottom end of the cup-shaped rotor 3, and is rotatably connected with the front and rear end covers of the casing 4. Bottom fixed connection;

...

specific Embodiment approach 2

[0030] Specific implementation mode two: see Figure 1 to Figure 6 Describe this embodiment. The difference between this embodiment and the magnetic flux memory type magnetic gear compound motor described in the first embodiment is that the side wall of the cup-shaped rotor 3 is composed of a magnetic adjustment block 3-1 and a non-magnetic conductive block 3 -2 are arranged alternately.

[0031] In this embodiment, the inner stator excitation winding 1-1 of the present invention is a three-phase winding, and a three-phase symmetrical current is passed through to form a three-pair rotating magnetic field in the inner air gap, and the optimal number of magnetic adjustment blocks 3-1 is 19 , the optimal number of outer stator magnetic steel 2-2 is 16 pairs.

[0032] The magnetic modulation block 3-1 and the non-magnetic conductive block 3-2 constitute a magnetic modulation ring, that is, the side wall of the cup-shaped rotor 3 is the magnetic modulation ring.

[0033] Compared...

specific Embodiment approach 3

[0034] Specific implementation mode three: see Figure 1 to Figure 6 Describe this embodiment, the difference between this embodiment and the magnetic flux memory type magnetic gear composite motor described in Embodiment 1 is that when the inner stator 1 is energized and running, the number of pole pairs of the rotating magnetic field generated is P1, and P1 is integer;

[0035] The number of pole pairs of the outer stator 2 is P2, and P2 is an integer;

[0036] The number of magnetic adjustment blocks 3-1 on the cup rotor 3 is N, and N is an integer;

[0037] Satisfy the relation: P2=|m P1+kN|, wherein, m=1, 3, 5, . . . , +∞; k=0, ±1, ±2, . . . , ±∞.

[0038] In this embodiment, when m=1, k=-1, the air-gap harmonic magnetic field modulated by the magnetic modulation block 3-1 is the strongest. At this time, the magnetic field space harmonic rotation speed Ω generated by the inner stator r for: Among them, Ω s In order to adjust the speed of the magnetic block, it can b...

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Abstract

The invention provides a magnetic flux memory type magnetic gear composite motor, and relates to the field of permanent magnet synchronous motor, in particular to the field of a magnetic gear composite motor with adjustable magnetic fluxes. Thus, a problem of poor magnet adjusting effects in traditional magnetic gear composite motor air gap magnetic field is solved. According to the invention, anouter stator direct-current exciting winding winds outer stator magnetic steel; by imposing direct current pulses on the outer stator direct-current exciting winding, the magnetization strength of theouter stator magnetic steel is changed; and by adjusting a magnet adjusting ring of a cup-type rotor and the air gap magnetic fluxes between inner and outer stators, effective adjustment of the air gap magnetic fluxes of the motor is achieved. The motor is mainly applied in direct driving field of electric vehicles and the like.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motors, in particular to the field of magnetic-gear compound motors with adjustable magnetic flux. Background technique [0002] In recent years, with the continuous improvement of the performance of rare earth permanent magnet materials, permanent magnet motors characterized by high efficiency and high power density have developed rapidly, and have been widely used in many industrial fields such as aviation, aerospace, ships, automobiles, and machine tools. The application not only significantly accelerates the pace of my country's industrial modernization, but also effectively promotes the realization of my country's energy-saving and emission-reduction strategic goals. The air gap magnetic field of traditional permanent magnet motors is difficult to adjust, which leads to a limited range of speed regulation during electric operation. When field weakening is required, a continuous d-a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/04
CPCH02K16/04Y02T10/64
Inventor 谢颖华邦杰张晓明黑亮声
Owner HARBIN UNIV OF SCI & TECH
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