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FPGA Implementation Of An Iterative Algorithm For Time Optimal Control Of AC Drives
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| Author(s) |
S. Bolognani, M. Ceschia, M. Tomasini, L. Tubiana, M. Zigliotto |
| Abstract |
In modern high dynamic applications the acceleration
performances of the permanent magnet synchronous motor
(PMSM) drives are limited by the torque control, which delivers
the required variations of current amplitudes in the stator
inductive phases. In principle, time optimal control (TOC) of
stator currents assures the fastest transients, within the
boundaries imposed by the voltage inverter and the thermal limits.
Nevertheless, the time optimal control implementation for a
PMSM drive lacks of a closed form solution. A transcendental set
of equations has to be solved to get the suitable voltage references.
The computational load is excessive, at least for the digital signal
processors (DSPs) presently used in electric drives. The proposed
work shows how a field programmable gate array (FPGA) can be
profitably used to implement the time-critical part of the
sophisticated TOC algorithm, as a bright example of the new
possibilities of hardware/software integration in embedded control
systems. |
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| Filename: | A32618 |
| Filesize: | 486 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-16 by System |
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