A Hardware-in-the-Loop Real-Time Testbed for Microgrid Hierarchical Control

H. Tu, Y. Du, H. Yu, S. Lukic, M. Metelko, P. Volgyesi, Abhishek Dubey, G. Karsai

2018 IEEE Energy Conversion Congress and Exposition (ECCE) 2018

PDF DOI

Why This Matters

This work is significant because it addresses the gap between high-fidelity simulation and real-world microgrid implementation by providing a practical validation platform that accounts for measurement noise, communication delays, and hardware constraints. Traditional simulations cannot capture real communication latencies and synchronization issues, while pure hardware testing is expensive. The testbed enables researchers to rapidly prototype and validate microgrid controllers before deployment, accelerating the development of resilient distributed energy systems.

What We Did

This paper presents a hardware-in-the-loop real-time testbed for microgrid hierarchical control that integrates FPGA-based solvers, CPU-based solvers, and real-time simulators. The testbed enables comprehensive validation of primary and secondary control algorithms in microgrids by bridging simulation accuracy with practical hardware constraints. The system uses Opal-RT simulators, RIAPS middleware, and Beaglebone Black boards to test both grid-tied and islanded microgrid operations under realistic communication delays and synchronization scenarios.

Key Results

The testbed successfully demonstrated voltage and frequency regulation in both current-mode and voltage-mode inverter control scenarios. Testing showed that unintentional islanding events were properly detected and handled through the secondary control layer. The system validated communication delays ranging from 50 to 200 milliseconds and demonstrated stable operation of distributed secondary control algorithms. Results confirmed the effectiveness of the hierarchical control architecture for managing power balance during grid transitions.

Full Abstract

Cite This Paper

@inproceedings{Tu2018,
  author = {Tu}, H. and {Du}, Y. and {Yu}, H. and {Lukic}, S. and {Metelko}, M. and {Volgyesi}, P. and Dubey, Abhishek and {Karsai}, G.},
  booktitle = {2018 IEEE Energy Conversion Congress and Exposition (ECCE)},
  title = {A Hardware-in-the-Loop Real-Time Testbed for Microgrid Hierarchical Control},
  year = {2018},
  month = {sep},
  pages = {2053-2059},
  abstract = {To maintain a stable, flexible and economic operation of a microgrid, hierarchical control architecture consisting of primary, secondary and tertiary control is proposed. However, the differences in dynamics of microgrid, bandwidths of control levels and speed of communication channels make it difficult to comprehensively validate the performance of the hierarchical control schemes. In this paper we propose a hardware-in-the-loop real-time testbed for microgrid hierarchical control. The proposed testbed can be used to validate control performance under different microgrid operating modes (grid-tied or islanded), different primary control schemes (current or voltage mode) and different secondary control approaches (centralized or distributed). The integration of industry-grade hardware that runs primary and secondary control into the testbed allows for complete emulation of microgrid operation, and facilitates the study of the effects of measurement noise, sampling and communication delays.},
  category = {conference},
  contribution = {minor},
  doi = {10.1109/ECCE.2018.8557737},
  file = {:Tu2018-A_Hardware-in-the-Loop_Real-Time_Testbed_for_Microgrid_Hierarchical_Control.pdf:PDF},
  issn = {2329-3721},
  keywords = {microgrid control, hardware-in-the-loop testing, real-time simulation, distributed control, power electronics, FPGA, inverter control},
  project = {cps-middleware,smart-energy},
  tag = {platform,power},
  month_numeric = {9}
}
Quick Info
Year 2018
DOI 10.1109/ECCE.2018.8557737
Keywords
microgrid control hardware-in-the-loop testing real-time simulation distributed control power electronics FPGA inverter control
Research Areas
middleware CPS scalable AI
Search Tags

Hardware, Loop, Real, Time, Testbed, Microgrid, Hierarchical, Control, microgrid control, hardware-in-the-loop testing, real-time simulation, distributed control, power electronics, FPGA, inverter control, middleware, CPS, scalable AI, 2018, Tu, Du, Yu, Lukic, Metelko, Volgyesi, Dubey, Karsai