A novel current-control method for three-phase PWM AC/DCvoltage-source converters
Komurcugil, H.; Kukrer, O.
Industrial Electronics, IEEE Transactions on
Volume 46, Issue 3, Jun 1999 Page(s):544 - 553
Digital Object Identifier 10.1109/41.767061
Summary:This paper presents a novel current-control-based control
strategy, obtained in stationary frame, for a three-phase
pulsewidth-modulated AC/DC voltage-source converter. In this control
strategy, an error voltage is produced from the comparison of the output
DC voltage with a DC reference voltage. This error voltage is then
utilized by a proportional plus integral controller to generate a
command signal for the input line current amplitude and is automatically
controlled to the desired value. Therefore, there is no need to measure
the input line currents. Stability analysis of the closed-loop system is
made, and the stability region for proportional and integral gains which
makes the operating point stable is also found. The resulting
closed-loop system not only exhibits good transient response, but also
provides sinusoidal line currents and unity power factor, both in the
rectifying and regenerating modes. Experimental results are presented
and compared with simulations
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