Permanent-magnetism synchronous motor permanent magnetic field aberration real-time detection and analysis method and device
Title：
Permanent-magnetism synchronous motor permanent magnetic field aberration real-time detection and analysis method and device
Application Number：
 200710176726
Application Date：
 2007/11/02
Announcement Date：
 2008/03/26
Pub. Date：
Publication Number：
 101149423
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G01R 33/02, G01R 33/12, G01R 31/34, G01R 23/16, H02P 6/00
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Xiao Xi, Zhang Meng
Key Words：
 Permanent-magnetism synchronous motor, permanent magnetic field aberration, real-time detection
Abstract：
 This invention relates to detecting, analyzing method and devices of permanent magnetic field deformation in permasyn motor. It is in the electric machine control technique field. This method is based on signals which are easy to detect such as voltage, current, electric engine rotate speed, location of the rotor, and so on. To get a real-time observation to the changing state of permasyn motor permanent magnetic field and calculate the back electromotive force coefficient, the permanent magnetic flux linkage on magnetic field synchronous revolution dq coordinate system of permasyn motor. Then the harmonic component in permanent magnetic waveform reflected motor phase winding back electromotive force coefficient by analyzing the back electromotive force. According as those methods, the optimizing control can be applied to forecast and prevent status of excitation losing in permasyn motor. The outcome has already reached can apply to excitation losing online detecting and high performance control of electric engines.
Claim：
Priority：
PCT：
LegalStatus：

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information



Other Patents of Same Inventor

Voice identification system of voice speed adaption
Method for measuring aircraft flight elevation based on video images
Method for measuring aircraft attitude parameters based on video images
A dynamic multi-proxy forward error control method for flow distribution
Flow distribution method based on numerical differentiation
A robust point to point based stream scheduling method
A push and pull based pure distributed data exchange method
Method for improving output power, qualities of spectrum and light beam in laser of optical fiber



News & Events More>>

Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo