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Optimal State Feedback Control of a Vector Controlled Current Source R
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| Author(s) |
A. Kloenne; F. W. Fuchs |
| Abstract |
Pulsewidth modulated current source rectifiers find their application in three phase current source
power converters for variable speed drives. Special attention has to be given to the control at the line
side because of the LC-Filter with low damping constant. This investigation firstly reports the design
and analysis of the multivariable optimal state feedback control for the current source rectifier. Here
the dc link is equipped with an ohmic load. In optimal control, the control strategy is sought that
gives the best trade-off between performance and cost of control. High stability and robustness
against parameter changes are two important advantages of optimal control. The line side rectifier has
been modelled within the separated d-q-frame. The proposed method enables the independent control
of the active and reactive component of the supply current vector. A performance index with
quadratic weighting is chosen so that a stable operational behaviour and small resonances at the
mains are achieved. The model of the system with multivariable optimal state feedback control was
investigated in simulations with varying weighting parameters for stationary and dynamic behaviour.
Finally, the control has been implemented in a DSP-system and FPGA-kit. Experimental results are
presented to a 22 kW converter test bench. |
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| Filename: | EPE2001 - PP00449 - Kloenne.pdf |
| Filesize: | 164.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-15 by System |
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