Fault-tolerant modular permanent magnet auxiliary synchronous reluctance motor

An auxiliary synchronous, reluctance motor technology, applied in the direction of motor, magnetic circuit, electromechanical device, etc., can solve the problems of safety threats to people in the electric vehicle, the motor can not work normally, no fault-tolerant performance, etc. Mass production, easy assembly, reduced effect of magnetic coupling

Active Publication Date: 2018-08-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In traditional three-phase motors, when faults such as winding open circuit and winding short circuit occur, the torque of the motor will drop sharply and be accompanied by severe vibration, so that the motor cannot work normally. the threat of
However, PMa-SynRM with distributed winding can have the same power density as other motors in a smaller size, but it has no fault tolerance

Method used

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  • Fault-tolerant modular permanent magnet auxiliary synchronous reluctance motor
  • Fault-tolerant modular permanent magnet auxiliary synchronous reluctance motor
  • Fault-tolerant modular permanent magnet auxiliary synchronous reluctance motor

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Embodiment Construction

[0031] Refer to the attached figure 1 , the structural features and beneficial effects of the modular permanent magnet assisted synchronous reluctance motor proposed by the present invention are described in detail. like figure 1 As shown, including modular stator 1 and rotor 2. combine figure 2 , the modular stator includes a stator core 1-1, an armature winding 3, a non-magnetic body 4 and a plurality of tooth and slot structures along the circumferential direction. The slots 1 - 2 and 1 - 3 closest to both sides of the shown non-magnetic body are respectively offset along the circumferential direction away from the non-magnetic body 4 . combine image 3 , the rotor includes a rotor core 2-1, a magnetic barrier 5 and a permanent magnet 6, the permanent magnet is placed in the magnetic barrier structure, and the N poles and S poles of adjacent permanent magnets are arranged alternately. Figure 4 The winding connections used for each modular unit of the stator are shown...

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Abstract

The invention discloses a fault-tolerant modular permanent magnet auxiliary synchronous reluctance motor which comprises modular stators and rotors. The modular stators are connected through non-conductive magnets. Grooves on both sides of each non-conductive magnet are skewed at different angles. Stator module units are connected through independent three-phase distributed windings. The rotors comprise rotor cores and asymmetric magnetic barriers. Permanent magnets are embedded in the magnetic barrier structures. N poles and S poles of adjacent permanent magnets are alternately arranged. According to the invention, due to the fact that a PMa-SynRM motor in a traditional winding distributed structure is not fault-tolerant, the modular idea is applied to the design of the motor to realize decoupling between modules and meet the requirement of high reliability of a drive motor system in the field of electric vehicles.

Description

technical field [0001] The present invention relates to the field of motors, more specifically, to a permanent magnet assisted synchronous reluctance motor. Background technique [0002] As a key component of electric vehicles, the motor drive system's performance is directly related to the power performance and conversion efficiency of electric vehicles. At present, the interior permanent magnet synchronous motor (IPMSM) with distributed winding structure is more researched on the driving motor used in electric vehicles. However, rare earth materials such as NdFeB are expensive, which will greatly increase the cost of the motor, and it is easy to cause demagnetization in a high temperature environment, resulting in the failure of the motor drive system to operate normally, which will limit the application of IPMSM motors in the field of electric vehicles to a certain extent. Permanent magnet assisted synchronous reluctance motor (PMa-SynRM) is a special IPMSM motor. The pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K3/28H02K1/27
CPCH02K1/12H02K1/276H02K3/28H02K2201/06H02K2213/03Y02T10/64
Inventor 刘国海徐媚媚赵文祥吉敬华陈前凌志健
Owner JIANGSU UNIV
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