Current Control of Three-Phase Rectifier Systems Using Three Independent Current Controllers

Michael Hartmann*, Hans Ertl, Johann W. Kolar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Three-phase rectifier systems without connection of the neutral wire are characterized by the coupling of the phase input currents. Considering these couplings requires a transformation of the system equations into a static αβ-frame or into the rotating dq -reference frame where instead of the three coupled phase currents two independent current components are controlled. In this paper, it is shown that, despite of the existing cross-couplings, three independent phase current controllers can be used to control the system. Thereto, the cross coupling elements of the system transfer matrix have to fulfill some requirements which are derived using the Gershgorin theorem. The three-phase Δ-switch rectifier circuit is used for analysis and a detailed model of the rectifier system is derived where the cross couplings are visible. The model is subsequently used to evaluate the cross couplings and three independent current controllers are designed. Simulation and experimental results verify the control approach using three independent current controller for three-phase rectifier systems.
Original languageEnglish
Pages (from-to)3988 - 4000
JournalIEEE Transactions on Power Electronics
Issue number8
Publication statusPublished - Aug 2013
Externally publishedYes


Dive into the research topics of 'Current Control of Three-Phase Rectifier Systems Using Three Independent Current Controllers'. Together they form a unique fingerprint.

Cite this