Fault Ride-Through Modulation for Forced Soft-Switched Three-Phase Dual-Active Bridge Converter

IEEE International Conference on DC Microgrids, pp. 1–6

Abstract

The protection of dc networks, in particular medium-voltage dc networks, is not standardized yet. Several protection concepts for dc grids are under investigation, using solid-state and hybrid circuit breakers. This paper focuses on the breakerless dc grid concept and therefore on the fault ride-through capability of a forced soft-switched three-phase dual-active bridge converter. To achieve 0 V fault ride-through capability different modulations are investigated, taking into account the characteristics of high-power converters. Therefore, simulation and hardware results of realizable modulations are presented.

Authors 3

1. Raphael Mencher Aachen Institute for Power Generation and Storage Systems (PGS)

   RWTH Aachen University

   Affiliation as printed

   Institute for Power Generation and Storage Systems RWTH Aachen University,Aachen,Germany

2. Jan Mathé Aachen Institute for Power Generation and Storage Systems (PGS)

   RWTH Aachen University

   Affiliation as printed

   Institute for Power Generation and Storage Systems RWTH Aachen University,Aachen,Germany

3. Rik W. De Doncker Aachen Institute for Power Generation and Storage Systems (PGS)

   RWTH Aachen University

   Affiliation as printed

   Institute for Power Generation and Storage Systems RWTH Aachen University,Aachen,Germany