A Model-Based Direct Power Control for Three-Phase Power Converters
Vazquez, S.
Sanchez, J.A.
Carrasco, J.M.
Leon, J.I.
Galvan, E.
Univ. of Seville, Seville;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: April 2008
Volume: 55,
Issue: 4
On page(s): 1647-1657
ISSN: 0278-0046
INSPEC Accession Number: 9920945
Digital Object Identifier: 10.1109/TIE.2008.917113
Current Version Published: 2008-04-04
Abstract
The direct power control (DPC) technique has been widely used as a control strategy for three-phase power rectifiers due to its simplicity and good performance. DPC uses the instantaneous active and reactive power to control the power converter. The controller design has been proposed as a direct control with a lookup table and, in recent works, as an indirect control with an inner control loop with proportional-plus-integral controllers for the instantaneous active and reactive power errors. In this paper, a model-based DPC for three-phase power converters is designed, obtaining expressions for the input control signal, which allow the design of an adaptive control law that minimizes the errors introduced by parameter uncertainties as the smoothing inductor value or the grid frequency. A controller design process, a stability study of the system, and experimental results for a synchronous three-phase power rectifier prototype are presented to validate the proposed controller.
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