Controller-Hardware-in-the-Loop Testbed for Fast-Switching SiC-Based 50-kW PV Inverter

Akanksha Singh, Kumaraguru Prabakar

Research output: Contribution to conferencePaperpeer-review

8 Scopus Citations


The recent advent of wide bandgap power semiconductor devices will lay the path for future power converters. These devices provide the advantage of high switching speed and lower losses. The high cost and high switching speeds of these devices provide a challenge in the development and validation of the fast-switching inverter controls with accuracy comparable to that of a hardware setup. In this paper, a field programmable gate array (FPGA) real-time simulator-based controller-hardware-in-the-loop (CHIL) testbed is used to verify the low-level and advanced inverter controls for fast-switching wide bandgap-based photovoltaic string inverter. The paper also includes development of the CHIL testbed, which is run at a time step of 500 ns in order to implement 20-kHz switching frequency. The developed CHIL testbed is validated through experimental results from a three-phase, 50-kW, 480-VLLrms SiC device-based inverter.

Original languageAmerican English
Number of pages7
StatePublished - 26 Dec 2018
Event44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018 - Washington, United States
Duration: 20 Oct 201823 Oct 2018


Conference44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018
Country/TerritoryUnited States

Bibliographical note

See NREL/CP-5D00-71544 for preprint

NREL Publication Number

  • NREL/CP-5D00-73466


  • Advanced grid-support functions
  • Controller hardware-in-the-loop
  • High switching frequency
  • Power electronics converters
  • SiC devices


Dive into the research topics of 'Controller-Hardware-in-the-Loop Testbed for Fast-Switching SiC-Based 50-kW PV Inverter'. Together they form a unique fingerprint.

Cite this