Elektrotechnisches Institut (ETI)

A new, universal Series Hybrid Cascaded H-Bridge Converter for Power-Hardware in the Loop Emulation

  • Author:

    R. Schwendemann, M. Lörcher, F. Sommer, L. Stefanski, M. Hiller

  • Source:

    2019 21th European Conference on Power Electronics and Applications (EPE'19 ECCE Europe)

  • This paper presents anew Series-Hybrid Cascaded H-Bridge(SH-CHB)Converter for Power-Hardware in the Loop(PHIL) systems. The converter combines the benefitsof CHB-Cells, high power density and high system efficiency,with the advantagesof Linear Power Amplifiers(LPA), high bandwidth andhighfidelity.The introducedsystem is used to emulate different AC-gridsas well as DC-grids with simultaneous supply of sinusoidal test signalsfor impedance spectroscopyof converters. Thesystem provides sinusoidal test signals up to 105kHzwith a three-phase output AC voltage of 400Vor a DC voltage of 1000V. The maximum output power of the system is60kVA.