| EPSRC Reference: |
GR/L07338/01 |
| Title: |
PREDICTIVE CONTROL OF TRANSIENT-FOLLOWING ACTIVE POWER FILTERS FOR MULTIPLE ELECTRIC DRIVES |
| Principal Investigator: |
Green, Prof. T |
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| Project Partners: |
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| Department: |
Electrical and Electronic Engineering |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
30 May 1997 |
Ends: |
29 May 2000 |
Value (£): |
126,327
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| EPSRC Research Topic Classifications: |
| Electric Motor & Drive Systems |
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Summary on Grant Application Form |
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Cost often percludes use of sine-current AC/DC converters. An active filter of relatively small VA rating and low cost can compensate the harmonic current interference of traditional AC/DC bridge rectifiers in one or more drives with large VA ratings. Performance with steady-state loads is good. However, the sampling and processing / filtering of supply current to identify the necessary compensation involves a large time lag. Active filters therefore perform poorly with drives in repeated transients.Adaptive modelling of the non-linear properties of the rectifiers together with drive command signals can predict current distortion so the filter anticipates rather than responds and correctly cancels interference and does not mistakenly draw (potentially large) fundamental currents. Various prediction techniques using adaptive filters, neutral networks and neuro-fuzzy systems will be assessed, initially through simulation. Testing will use an active filter built around a 50kVA commercial inverter and drives incorporating diode amd thyristor rectifiers. Speed of response and prediction will be assessed. The demonstration will show supply current waveforms which comply with utility and EN standards. The voltage supply can cause reference frame orientation problems and these will be assessed.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.imperial.ac.uk |