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Rotor structure, permanent magnet assisted synchronous reluctance motor and electric vehicle

A technology of rotor structure and reluctance motor, applied in electric vehicles, motors, electric components, etc., can solve the problem of low motor efficiency

Active Publication Date: 2020-10-23
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a rotor structure, permanent magnet assisted synchronous reluctance motor and electric vehicle, to solve the problem of low motor efficiency in the prior art

Method used

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  • Rotor structure, permanent magnet assisted synchronous reluctance motor and electric vehicle
  • Rotor structure, permanent magnet assisted synchronous reluctance motor and electric vehicle
  • Rotor structure, permanent magnet assisted synchronous reluctance motor and electric vehicle

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Embodiment Construction

[0060] 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.

[0061] to combine Figure 1 to Figure 12 As shown, according to an embodiment of the present invention, a rotor structure is provided.

[0062] Specifically, the rotor includes a rotor body 10, and the rotor body 10 is provided with a set of magnetic steel slots, the set of magnetic steel slots includes an inner layer of magnetic steel slots 12, and the inner layer of magnetic steel slots 12 includes first inner layer of magnetic steel slots arranged in sequence Section 121, the second inner layer magnetic steel groove section 122 and the third inner layer magnetic steel groove section 123, the second inner layer magnetic steel groove section 122 is an arc structure, and the arc portion of the...

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Abstract

A rotor structure, a permanent magnet-assisted synchronous reluctance motor, and an electric vehicle. The rotor structure comprises a rotor body (10); the rotor body (10) is provided with magnetic steel groove sets; the magnetic steel groove set comprises an inner magnetic steel groove (12); the inner magnetic steel groove (12) comprises a first inner magnetic steel groove section (121), a second inner magnetic steel groove section (122), and a third inner magnetic steel groove section (123) which are provided in sequence; the second inner magnetic steel groove section (122) has an arc-shaped structure; the arc of the second inner magnetic steel groove section (122) protrudes towards the side of a rotating shaft hole (13) of the rotor body (10); the second inner magnetic steel groove section (122) is symmetrical with respect to a direct axis of the rotor body (10); end sidewall extension lines of both ends of the second inner magnetic steel groove section (122) intersect the direct axis at point Q. By configuring that the end sidewall extension lines of both ends of the second inner magnetic steel groove section (122) intersect the direct axis of the rotor body (10) at point Q, the inductance intensity of q-axis of the motor is increased, the motor efficiency is improved, the motor torque ripple is reduced, the motor vibration and noise are reduced, and the motor demagnetization resistance capability is improved.

Description

technical field [0001] The invention relates to the technical field of motor equipment, in particular to a rotor structure, a permanent magnet assisted synchronous reluctance motor and an electric vehicle. Background technique [0002] Electric vehicles have the characteristics of energy saving and environmental protection, and have been developed rapidly. In order to achieve the functions of high power density and high efficiency of the existing electric vehicle drive motors, more and more motors use high-performance rare earth permanent magnet motors. Rare-earth permanent magnet motors can achieve high efficiency and high power density, mainly relying on high-performance rare-earth permanent magnets. Currently, NdFeB rare-earth permanent magnets are the most widely used. However, rare earth is a non-renewable resource, the price is relatively expensive, and the price of rare earth fluctuates greatly, resulting in higher production costs of electric vehicle drive motors, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K29/03
CPCH02K1/2766H02K29/03H02K2213/03Y02T10/64
Inventor 陈彬胡余生肖勇童童卢素华
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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