ELECTRIC EXCITATION MOTOR DRIVEN BY MEANS OF HARMONIC MAGNETIC FIELD

Title:

ELECTRIC EXCITATION MOTOR DRIVEN BY MEANS OF HARMONIC MAGNETIC FIELD

Document Type and Number:

WIPO Patent Application WO/2024/021239

Kind Code:

A1

Abstract:

An electric excitation motor driven by means of a harmonic magnetic field. In the electric excitation motor: A. a stator is provided with several tooth slots, wherein the number of slots is Z; B. in the 360-degree circumferential mechanical space of the stator, a stator winding is divided into m phases according to a set connection rule; C. with regard to a stator assembly, which is provided with the stator winding, any phase of winding of the stator assembly is supplied with a direct-current constant current, and in the 360-degree circumferential mechanical space of the stator, Pm pairs of phase winding magnetic field poles are formed; D. each phase of stator winding includes k coils, wherein k = n * Pm(n = 1, 2, 3 …), and a single-layer winding is used; E. by means of an excitation winding, rotor pole shoe magnetic poles are sequentially arranged in a circumferential direction according to the sequence of an N pole and an S pole, and in the 360-degree circumferential mechanical space of a rotor, Pr pairs of rotor pole shoe magnetic poles are formed; and F. an electric motor air gap is formed in the 360-degree circumferential mechanical space between the stator and the rotor, wherein the number Pr of rotor pole shoe magnetic pole pairs must satisfy: Pr ＝ Z ± Pm, where the number Z of slots of the stator satisfies: Z = 2 * m * k.

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Inventors:

ZHOU JIANMIN (CN)
XU HENGSHUAI (CN)
HE HAILIANG (CN)
LIU PEIHAI (CN)

Application Number:

PCT/CN2022/117671

Publication Date:

February 01, 2024

Filing Date:

September 07, 2022

Export Citation:

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Assignee:

NINGBO HENGSHUAI CO LTD (CN)

International Classes:

H02K3/28; H02K3/12; H02K3/48; H02K3/52

Foreign References:

CN113890220A	2022-01-04
CN110474493A	2019-11-19
CN114598082A	2022-06-07
CN113489184A	2021-10-08
CN107769458A	2018-03-06
US20100259136A1	2010-10-14

Attorney, Agent or Firm:

NINGBO TIANYI PATENT AGENT LTD. (CN)

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