In this paper, a new control method is presented
which enables equal sharing of linear and nonlinear loads in
three-phase power converters connected in parallel, without communication
between the converters. The paper focuses on solving
the problem that arises when two converters with harmonic
compensation are connected in parallel.Without the new solution,
they are normally not able to distinguish the harmonic currents
that flow to the load and harmonic currents that circulate between
the converters. Analysis and experimental results on two 90-kVA
400-Hz converters in parallel are presented. The results show
that both linear and nonlinear loads can be shared equally by the
proposed concept