Approximate inverse system control method and system of active direct current filter for high voltage power transmission |
Title： |
| Approximate inverse system control method and system of active direct current filter for high voltage power transmission |
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Application Number： |
200310115395 |
Application Date： |
2003/11/21 |
Announcement Date： |
2004/11/10 |
Pub. Date： |
2007/05/23 |
Publication Number： |
1545182 |
Announcement Number： |
1317798 |
Grant Date： |
2007-5-23 |
Granted Pub. Date： |
2007-5-23 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H02J 1/02 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Zhao Dongyuan, Chen Jianye, Wang Zanji |
Key Words： |
inverse system, control method, direct current, filter, high voltage, power transmission |
Abstract： |
The invention is an approximate reverse system control method and system of active DC filter used in high-voltage power transmission, its character: it is a zero-error tracking method, under the control of DSP based on an approximate reverse system, using harmonic source current as detecting signal and compensatory current generated by the filter device as feedback signal and using the two currents as DSP control signals. The approximate reverse system is implemented by many band-pass filters and phase shifting circuits corresponding many harmonic currents. It has the advantages of fast system's response, good restricting effect on primary harmonic source currents 12th, 24th and 36th and avoiding extraction of weak signals, etc. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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