| EPSRC Reference: |
GR/N38190/01 |
| Title: |
INTERNAL MODELS OF HIGH COMPLEXITY IN THE CONTROL OF DC/THREE-PHASE POWER CONVERTERS |
| Principal Investigator: |
Weiss, Professor G |
| Other Investigators: |
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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: |
15 April 2001 |
Ends: |
31 March 2003 |
Value (£): |
296,111
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| EPSRC Research Topic Classifications: |
| Control Engineering |
Electric Motor & Drive Systems |
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| EPSRC Industrial Sector Classifications: |
| Energy |
Information Technologies |
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| Panel History: |
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Summary on Grant Application Form |
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In its original form (c. 1975) internal model-based controllers are computer algebraically to ensure closed-loop stability, tracking and disturbance rejection. Modern H^infinity control and recent advances in the theory of distributed parameter systems enable a radically different approach to internal model-based control, and they lead to a robust structure which allows internal models of very high order and with varying frequencies. Repetitive controllers are a particular case of such a structure (with a very high order internal model but which is easy to implement). One objective is to explore the generalisation of repetitive control to signals that are compo0sed of several periodic components (of arbitrary wave-form)) and different frequencies. This involves problems of synchronisation when the frequencies are drifting (as they often do in power electronics). Non-linear loads (e.g. rectifiers) and slow cyclic loads (e.g. machine tools) distort grid voltages causing equipment malfunction and lighting flicker. Traditional power generators cannot actively control waveshape and rely on low source impednances. The power converters found in small scale generators have to apply waveshape control. Repetitive controllers will be experimentally tested for DC to three phase converters with rectifier loads and with cyclic machine loads, as well as for active power filters.
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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 |