Title :
Control of a complete digital-based component-minimized single-phase to three-phase AC/DC/AC converter
Author :
Sander-Larsen, Jørgen ; Jespersen, Kim ; Pedersen, Martin Rune ; Blaabjerg, Frede ; Pedersen, John K.
Author_Institution :
Inst. of Energy Technol., Aalborg Univ., Denmark
fDate :
31 Aug-4 Sep 1998
Abstract :
This paper proposes a new control strategy for a complete digital-based component minimized single- to three-phase AC/DC/AC power converter where it is possible by proper control to reduce the capacitor size in the DC-link. The power converter offers four quadrant operation including unity power factor and it uses only six transistors and six diodes. Control is done completely digitally with a high bandwidth input current controller and a lower bandwidth DC-link voltage controller. The modulation of the inverter compensates for the voltage variation in the DC-link. The proposed methods are validated through simulation and experimental work. It is concluded that the capacitor-size can be reduced significantly in a B4-inverter by the control method but a load dependent sub-harmonic current is injected into the grid
Keywords :
AC-AC power convertors; control system synthesis; digital control; power capacitors; voltage control; B4-inverter; DC link capacitor size; DC link voltage control; control strategy; four quadrant operation; invertor modulation compensation; load dependent sub-harmonic current; single-to-three phase AC/DC/AC power converter; unity power factor; Capacitors; Diodes; Inverters; Power harmonic filters; Reactive power; Rectifiers; Size control; Switches; Topology; Voltage control;
Conference_Titel :
Industrial Electronics Society, 1998. IECON '98. Proceedings of the 24th Annual Conference of the IEEE
Conference_Location :
Aachen
Print_ISBN :
0-7803-4503-7
DOI :
10.1109/IECON.1998.724164