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Motor rotor and motor with motor rotor

An electric motor and rotor technology, applied in the field of electric motors, can solve the problems of high price, unable to meet the urgent requirements and limitations of electric motor efficiency, and achieve the effects of reducing the amount of rare earth, improving the efficiency of the electric motor, and improving the reluctance torque.

Active Publication Date: 2013-06-19
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since rare earths are non-renewable resources and are expensive, the wider application of this type of motor is limited
In addition, improving the performance of the motor only by improving the performance of the permanent magnet cannot meet the urgent requirements of further improving the efficiency of the motor.

Method used

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  • Motor rotor and motor with motor rotor
  • Motor rotor and motor with motor rotor
  • Motor rotor and motor with motor rotor

Examples

Experimental program
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no. 1 example

[0033] Such as figure 1 As shown in the first embodiment of the engine rotor according to the present invention, the motor rotor includes an iron core 10 and a permanent magnet 20 disposed inside the iron core 10, and the iron core 10 is provided with multiple sets of mounting grooves 30 along the circumferential direction of the iron core 10, Each group of mounting grooves 30 includes two or more than two mounting grooves 30 intermittently arranged in the radial direction of the iron core 10; there are multiple groups of permanent magnets 20, and each permanent magnet 20 in each group of permanent magnets 20 is embedded in each group correspondingly. In each of the installation grooves 30 of the installation grooves 30 .

[0034] figure 1 The iron core 10 of the engine rotor in the engine is made of laminated silicon steel plates and has a certain stack height. With the axis of the iron core 10 as the center of the circle, six sets of mounting grooves 30 are evenly distribut...

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Abstract

Disclosed is a motor rotor, comprising an iron core (10) and permanent magnets (20) provided inside the iron core (10). The iron core (10) is provided with sets of mounting grooves (30) in the peripheral direction of the iron core, each set of mounting grooves (30) comprising two or more mounting grooves (30) provided intermittently in the radial direction of the iron core (10). There are sets of permanent magnets (20), the individual permanent magnets (20) of each set of permanent magnets (20) correspondingly being embedded into the individual mounting grooves (30) of each set of mounting grooves. Disclosed is a motor comprising the above-mentioned motor rotor. The motor rotor increases the magnetic reluctance torque of the motor rotor and thus increases the output torque of the motor and the efficiency of the motor.

Description

technical field [0001] The invention relates to the field of electric motors, more specifically, to a motor rotor and a motor having the same. Background technique [0002] A permanent magnet synchronous motor (IPM) is a motor that places a layer of permanent magnets inside the rotor and mainly uses permanent magnet torque and reluctance torque as auxiliary motors. [0003] The synthetic formula of reluctance torque and permanent magnet torque is as follows: T=mp(L q -L d ) i d i q +mpψ PM i q . [0004] Among them, T is the output torque of the motor, increasing the value of T can improve the performance of the motor; the first term in the equation after T is the reluctance torque, and the second term is the permanent magnet torque; Ψ PM is the maximum value of the stator-rotor coupling magnetic flux generated by the permanent magnet of the motor, m is the phase number of the stator conductor, L d , L q They are the d-axis and q-axis inductance respectively, where ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K21/12
CPCH02K1/2766H02K2213/03H02K1/246
Inventor 黄辉胡余生陈东锁陈华杰肖勇曾学英张文明
Owner GREE ELECTRIC APPLIANCES INC