Title:
RADIO EXCITATION SYSTEM, DETECTION METHOD AND ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/022733
Kind Code:
A1
Abstract:
Disclosed are a radio excitation system, a detection method and an electric vehicle, which relate to the field of electronic power technology. The input end of a first power conversion circuit of the system is connected to a power source, and the output end thereof is connected to a stator winding of an electric excitation motor; the input end of a second power conversion circuit is connected to the power source, and the output end thereof is connected to a primary side of an excitation transformer; the energy required by an excitation winding of the electric excitation motor is transferred from a stator to a rotor by means of the excitation transformer; the first power conversion circuit is controlled by a first controller to introduce current excitation into the stator winding so as to generate current on the excitation winding; a detection circuit obtains response signals of the primary side of the excitation transformer and sends same to a second controller; and the second power conversion circuit is controlled by the second controller to introduce pulse current excitation into the primary side of the excitation transformer when the secondary side of the excitation transformer is short-circuited or open-circuited caused by the current generated in the excitation winding, and determines electrical parameters of the excitation transformer by using the response signals. Said system can be used to detect electrical parameters of the radio excitation system.
Inventors:
SHU WEILIANG (CN)
FAN WINGTO (CN)
CHEN SHUANGQUAN (CN)
FAN WINGTO (CN)
CHEN SHUANGQUAN (CN)
Application Number:
PCT/CN2021/109959
Publication Date:
February 03, 2022
Filing Date:
August 02, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02P21/14; H02P9/14; H02P25/022; H02P25/18; H02P29/024
Foreign References:
| CN107104613A | 2017-08-29 | |||
| CN107222006A | 2017-09-29 | |||
| CN107707171A | 2018-02-16 | |||
| JP2010077603A | 2010-04-08 | |||
| CN202010760367A | 2020-07-31 |
Other References:
See also references of EP 4181389A4
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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