Title:
METHOD AND SYSTEM FOR MEASURING FLUX-SWITCHING ELECTRIC MOTOR ROTOR ANGLE ON BASIS OF LINEAR HALL
Document Type and Number:
WIPO Patent Application WO/2022/222475
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of power generation, power transformation or power distribution. Disclosed are a method and system for measuring a flux-switching electric motor rotor angle on the basis of linear Hall. The method comprises: firstly, selecting four linear Hall elements and respectively mounting same in four slots (11) of a stator (8), wherein magnetic sensitive faces of the Hall elements are all opposite the surface of a rotor salient pole; a first linear Hall element (3) is mounted in any slot (11) of the stator (8), and a second linear Hall element (4) is spaced apart from the first linear Hall element (3) by N1 slots (11) in a unified direction; N1 is an even number, and N1 ≠ ks/(2p), k being any integer, s being the number of slots of the stator (8), and p being the number of pairs of electric motor poles; a third linear Hall element (5) is spaced apart from the first linear Hall element (3) by N2 slots (11); N2 is an odd number, and N2 = (2k - 1)s/(2p); and a fourth linear Hall element (6) is spaced apart from the second linear Hall element (4) by N2 slots (11); and then calculating an electric motor rotor angle according to voltage signals of the four linear Hall elements. By means of the present invention, a high-compactness and high-precision angle measurement is realized, and angle measurement and speed measurement requirements of a high-performance flux-switching electric motor are met.
Inventors:
HUA WEI (CN)
WANG YUCHEN (CN)
LIU KAI (CN)
ZHANG CHAO (CN)
WANG YUCHEN (CN)
LIU KAI (CN)
ZHANG CHAO (CN)
Application Number:
PCT/CN2021/133959
Publication Date:
October 27, 2022
Filing Date:
November 29, 2021
Export Citation:
Assignee:
UNIV SOUTHEAST (CN)
International Classes:
H02K29/08; H02K11/215; H02P21/18; H02P25/022
Foreign References:
| CN113258741A | 2021-08-13 | |||
| CN111740672A | 2020-10-02 | |||
| US20020143288A1 | 2002-10-03 | |||
| CN206743048U | 2017-12-12 | |||
| CN112152412A | 2020-12-29 |
Attorney, Agent or Firm:
BEIJING TONGHUI INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
Download PDF:
Previous Patent: PACKET PROCESSING METHOD AND APPARATUS, SYSTEM, DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM
Next Patent: HUMANOID FINGER MECHANISM
Next Patent: HUMANOID FINGER MECHANISM