Axial-magnetic-field birotor AC motor

A technology of axial magnetic field and AC motor, which is applied in the direction of magnetic circuit rotating parts, synchronous motor with stationary armature and rotating magnet, magnetic circuit, etc., and can solve the problems of occasions where the two rotor speeds are different

Active Publication Date: 2019-12-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the problem that the traditional motor is not suitable for occasions requiring two different rotor speeds, and now provides an axial magnetic field double-rotor AC motor

Method used

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  • Axial-magnetic-field birotor AC motor
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  • Axial-magnetic-field birotor AC motor

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Experimental program
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specific Embodiment approach 1

[0079] Specific implementation mode one: refer to figure 1 and Figure 7 This embodiment is specifically described. The axial magnetic field double-rotor AC motor described in this embodiment includes two rotors and a stator. The two rotors and the stator are coaxially arranged, and the stator is located between the two rotors. The stator and the two There is an air gap between the rotors,

[0080] The rotor includes a metal substrate and a plurality of permanent magnets. The surface of the permanent magnet is fan-shaped or trapezoidal. The plurality of permanent magnets are evenly arranged along the ring and fixed on the surface of the metal substrate, and the narrow side of the permanent magnet faces the center of the metal substrate. The magnetization direction of the permanent magnet is axial, and the pole directions of the two adjacent permanent magnets are opposite.

[0081] The stator includes a circular stator core, and the two sides of the stator core are respectiv...

specific Embodiment approach 2

[0089] Specific implementation mode two: refer to figure 2 and Figure 7 This embodiment is specifically described. The axial magnetic field double-rotor AC motor described in this embodiment includes two rotors and a stator. The two rotors and the stator are coaxially arranged, and the stator is located between the two rotors. The stator and the two There is an air gap between the rotors,

[0090] The rotor includes a metal substrate and a plurality of permanent magnets. The surface of the permanent magnet is fan-shaped or trapezoidal. The plurality of permanent magnets are evenly arranged along the ring and fixed on the surface of the metal substrate, and the narrow side of the permanent magnet faces the center of the metal substrate. The magnetization direction of the permanent magnet is axial, and the pole directions of the two adjacent permanent magnets are opposite.

[0091] The stator includes a circular stator core, and the two sides of the stator core are respectiv...

specific Embodiment approach 3

[0099] Specific implementation mode three: refer to image 3 and Figure 7 This embodiment is specifically described. The axial magnetic field double-rotor AC motor described in this embodiment includes two rotors and a stator. The two rotors and the stator are coaxially arranged, and the stator is located between the two rotors. The stator and the two There is an air gap between the rotors,

[0100] The rotor includes a metal substrate and a plurality of permanent magnets. The surface of the permanent magnet is fan-shaped or trapezoidal. The plurality of permanent magnets are evenly arranged along the ring and fixed on the surface of the metal substrate, and the narrow side of the permanent magnet faces the center of the metal substrate. The magnetization direction of the permanent magnet is axial, and the pole directions of the two adjacent permanent magnets are opposite.

[0101] The stator includes a circular stator core, and the two sides of the stator core are respecti...

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Abstract

The invention relates to an axial-magnetic-field birotor AC motor, and relates to the field of motors. The invention aims to solve the problem that a traditional motor is not suitable for occasions requiring different rotating speeds of two rotors. According to the axial-magnetic-field birotor AC motor, one motor stator is used for generating two magnetomotive forces in opposite rotating directions and at different rotating speeds, and the two magnetomotive forces interact with the magnetic fields of the two rotors respectively, so that the two rotors rotate in different directions and at different speeds respectively, and the purpose of being suitable for occasions with different rotating speeds of the two rotors is achieved. The efficiency and the power density of the birotor motor can be improved, the structure of a propulsion system is simplified, and the motor is simple in structure, low in manufacturing cost and high in reliability. The motor is suitable for a rotary propeller propelling system, and is particularly suitable to be used as a counter-rotating double-mechanical-port permanent magnet synchronous motor for propelling an underwater vehicle.

Description

technical field [0001] The invention belongs to the field of motors. Background technique [0002] The propulsion system of the underwater vehicle mainly adopts counter-rotating propellers. This structure enables the two propellers to offset the rotational moment generated in the circumferential direction while generating the forward driving force of the underwater vehicle, thus effectively avoiding the The roll phenomenon ensures the forward attitude of the aircraft and improves the operating efficiency of the system. The driving mode mostly adopts "conventional motor + planetary gear", but the planetary gear structure makes the reliability and efficiency of the entire system relatively low. [0003] The traditional double-rotor permanent magnet motor is an AC motor composed of an inner rotor, an outer rotor and a shared stator in the middle. Its basic structure and a schematic diagram of a cross-section under a pair of poles Figure 8 and Figure 9 shown. The middle stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/02H02K21/24H02K1/27H02K1/16H02K3/28
CPCH02K16/02H02K1/2793H02K3/28H02K2213/03H02K1/146H02K2201/12
Inventor 寇宝泉张浩泉邵一
Owner HARBIN INST OF TECH
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