Current control of unbalanced electrical systems
Jacobina, C.B.
Correa, M.B.deR.
Oliveiro, T.M.
Lima, A.M.N.
da Silva, E.R.C.
Dept. de Engenharia Eletrica, Univ. Fed. da Paraiba;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Jun 2001
Volume: 48,
Issue: 3
On page(s): 517-525
ISSN: 0278-0046
References Cited: 11
CODEN: ITIED6
INSPEC Accession Number: 6951725
Digital Object Identifier: 10.1109/41.925578
Current Version Published: 2002-08-07
Abstract
The vector modeling approach is employed to describe the behavior
of unbalanced three-phase (three-wire), unbalanced two-phase and
single-phase systems. In the case of single-phase systems, a fictitious
circuit is introduced in order to create the vector model.
Continuous-time and discrete-time current controllers based on the
vector approach are presented. The current control scheme is based on
two controllers, one for the positive sequence and another for the
negative sequence. The controllers are implemented in the synchronous
reference frame and in the stationary reference frame. In the stationary
reference frame, the use of the same integral gains for both controllers
simplifies the equations of the control law especially for single-phase
systems. Simulation and experimental results obtained with a pulsewidth
modulation voltage-source inverter supplying unbalanced systems are
presented
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