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A technology of motor rotor and auxiliary slot, which is applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of large torque pulsation and noise of motors, and achieve the effects of improving torque pulsation, reducing noise, and reducing space

Active Publication Date: 2016-03-02
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a motor to solve the problem that the torque ripple of the motor in the prior art generally makes the noise large

Method used

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Embodiment Construction

[0029] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] Such as Figures 3 to 6 As shown, according to the embodiment of the present invention, the motor includes a motor rotor, and the motor rotor includes a rotor core 10 and an auxiliary slot 20, the rotor core 10 is provided with a magnetic steel slot structure 11, and a permanent magnet is arranged in the magnetic steel slot structure 11 12. The magnetic steel groove structure 11 is arc-shaped; the auxiliary groove 20 is located between the magnetic steel groove structure 11 and the outer edge of the rotor core 10, and the auxiliary groove 20 and the magnetic steel groove structure 11 are set in a one-to-one correspondence. The auxiliary groove 20 The auxiliary groove 20 is arc-shaped, a...

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Abstract

The invention provides an electric motor. The electric motor includes a motor rotor, wherein the motor rotor includes a rotor core, and a magnetic steel groove structure is arranged on the rotor core, and internally provided with a permanent magnet; the magnetic steel groove structure is in the shape of an arc; an assist groove, which is situated between the magnetic steel groove structure and the outer edge of the rotor core, and corresponding to the magnetic steel groove structure one by one; the assistant groove is in the shape of an arc, and the extending direction of the assistant groove is the same as that of the magnetic steel groove structure; moreover, the assistant groove is raised at the same direction as the magnetic steel groove structure. The electric motor is able to effectively reduce noise.

Description

technical field [0001] The invention relates to the field of motor equipment, in particular to a motor. Background technique [0002] Such as figure 1 and 2 As shown, the motor rotor includes the rotor core 10', and the motor magnetic field at no load is as follows figure 1 As shown, when the load is applied, the motor magnetic field is as figure 2 shown. The permanent magnet synchronous reluctance motor in the prior art has the advantage of high efficiency and low cost. In the actual application process, there are usually magnetic steel grooves in the rotor, and permanent magnets are embedded in the magnetic steel grooves, so as to make full use of the reluctance torque. The output torque of the motor is composed of permanent magnet torque and reluctance torque. Due to the structural characteristics of the motor itself, the difference in inductance of the DQ axis fluctuates greatly, resulting in large fluctuations in the reluctance torque, which causes greater vibratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K29/03H02K1/27
CPCH02K1/2766H02K29/03H02K2213/03
Inventor 童童胡余生陈彬肖勇
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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