Medium and high voltage frequency converter monitoring method and system based on state self-adaption |
Title： |
| Medium and high voltage frequency converter monitoring method and system based on state self-adaption |
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Application Number： |
02121112 |
Application Date： |
2002/06/07 |
Announcement Date： |
2002/12/11 |
Pub. Date： |
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Publication Number： |
1384597 |
Announcement Number： |
1194461 |
Grant Date： |
2005-3-23 |
Granted Pub. Date： |
2005-3-23 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H02P 7/36 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Jiang Qirong, Jin Shuguang, Yan Gangui |
Key Words： |
Medium and high voltage frequency converter, monitoring method and system, state self-adaption |
Abstract： |
The present invention belongs to the field of frequency-varying speed regulating control technology. The monitoring process features its steps of initialization to set 11 analog input amounts of main circuit, 2 analog output display amounts, 28 digital input amounts of switch position and protecting contact state, 6 output digital amounts, 4 working states of the frequency converter and 4 change-over control D0 amounts; self-test of the frequency converter; defining the initial working state of the frequency converted based on the self-test result; monitoring the working state of the frequency converter; and executing change-over control of working state and open-looped control of frequency varying speed regulation. The circuit principle block diagram is also proposed. |
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PCT： |
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 Relevancy information |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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