Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SELF-DETECTION SYSTEM FOR CONNECTION LINES OF ROTARY TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2021/073139
Kind Code:
A1
Abstract:
A self-detection system for connection lines of a rotary transformer, comprising a DSP controller, an excitation signal amplification and filtering circuit (3), a rotary transformer (1) and a sine and cosine signal conditioning circuit (4), a program part of the DSP controller comprising a full-digital RDC decoding module, a line sequence identification module (7) and a motor control algorithm part (8). The self-detection method for connection lines of a rotary transformer can, when the lines of the rotary transformer are connected in a wrong sequence, identify an actual line sequence by means of the line sequence identification module (7), and automatically compensate for a deviation between a rotor position identified in the current line sequence and an actual rotor position, thereby normally starting and running a permanent magnet synchronous motor, avoiding spending a lot of time and effort of a debugging person on site to find a connection line error of the rotary transformer, and improving on-site debugging efficiency. The system is also applicable to all applications of a permanent magnet synchronous motor using a rotary transformer as a position sensor.

More Like This:
WO/2022/042812METHOD AND DEVICE FOR ANALYSING THE STATE, CONDITION AND POWER QUALITY OF TRANSFORMERS IN POWER GRIDS
WO/2023/004700METHOD AND APPARATUS FOR DETECTING ANOMALY OF TRANSFORMER, AND COMPUTER-READABLE STORAGE MEDIUM
WO/2022/013024METHOD FOR DETERMINING AT LEAST ONE CHARACTERISTIC PARAMETER OF A COMPONENT OF A DC CONVERTER BY MEANS OF AN ELECTRONIC COMPUTER DEVICE, AND ELECTRONIC COMPUTER DEVICE
Inventors:
ZHANG RUIFENG (CN)
DING ZHIYONG (CN)
LU YAO (CN)
ZHANG JIBIN (CN)
WANG BIN (CN)
ZHAN ZHEJUN (CN)
LIANG HAIGANG (CN)
Application Number:
PCT/CN2020/097627
Publication Date:
April 22, 2021
Filing Date:
June 23, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CRRC YONGJI ELECTRIC CO LTD (CN)
International Classes:
G01R31/62; G01R31/34; G01R31/67
Foreign References:
CN110794343A2020-02-14
CN110426062A2019-11-08
CN104796063A2015-07-22
CN106707892A2017-05-24
CN101719752A2010-06-02
CN107769630A2018-03-06
CN104796053A2015-07-22
CN104917428A2015-09-16
CN105987710A2016-10-05
CN206292337U2017-06-30
JP2012018086A2012-01-26
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: AUDIO OUTPUT METHOD AND SYSTEM

Next Patent: MONOCULAR CAMERA, AND IMAGE PROCESSING SYSTEM AND IMAGE PROCESSING METHOD