Abstract
In this paper reconfiguration of grid-interfacing
converters is proposed for power quality improvement. In addition
to the traditional function of delivering energy between
distributed sources and the utility grid, more flexible ancillary
functions can be integrated into the control of grid-interfacing
converters to both improve the power quality at the user side
and the utility side. The potential for solving or improving
various problems on different system levels is described in detail.
Two three-phase four-leg inverters, together with DC microsources
and loads, are employed to construct a general gridinterfacing
system module. Through the redefinition of system
functions, it is possible to achieve voltage unbalance correction,
harmonic current compensation at the point of connection with
the utility grid, protection of distributed generation systems from
grid disturbances, and high quality voltage for sensitive loads
under various utility grid situations. While the effect on helping
the utility grid is small for a single module, a number of the
modules put together could be pronounced. The Control scheme
and validation results are presented in the paper.
| Original language | English |
|---|---|
| Title of host publication | 4th IEEE Benelux Young Researchers Symposium in Electrical Power Engineering, Eindhoven, The Netherlands, 7-8 February, 2008 |
| Editors | L. Encica, B.L.J. Gysen, J.W. Jansen, D.C.J. Krop |
| Place of Publication | Eindhoven |
| Publisher | Technische Universiteit Eindhoven |
| ISBN (Print) | 978-90-6144-986-7 |
| Publication status | Published - 2008 |