| EPSRC Reference: |
GR/J66300/01 |
| Title: |
LOW ROTOR SPEED TORQUE CONTROL OF INDUCTION MOTOR DRIVES |
| Principal Investigator: |
Atkinson, Dr DJ |
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| Project Partners: |
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| Department: |
Electrical, Electronic & Computer Eng |
| Organisation: |
Newcastle University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
18 July 1994 |
Ends: |
17 July 1997 |
Value (£): |
106,787
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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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This proposal is concerned with a method of low rotor speed torque control in variable speed induction motor drives. The method will remove the need for a shaft sensor which has traditionally been included when torque control at low rotor speed is required. The torque is controlled through the use of field orientation principles coupled with a new method of flux detection using an extended Kalman filter. Using this approach a non-linear observer is used to estimate the rotor flux along with the shaft velocity removing the need for a shaft sensor. Measurement of stator current is used to provide model prediction error feedback to allow estimation of rotor speed. The estimator performance is increased at high measurement sample rates and therefore multiple digital signal processor (DSP) hardware is used to implement the drive control system. The multiple processor approach will utilise inherently parallel algorithms for Kalman filtering such systolic arrays. Research into the robustness of the scheme to measurement and model errors and acceptable sampling rates will be carried out. the performance of the scheme will be measured in terms of the torque dynamics of the overall drive with particular emphasis on low speed performance.
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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.ncl.ac.uk |