Variable Three-Phase Load Bank Using AC Converter

DOI

10.2991/978-94-6463-926-1_29How to use a DOI?

Keywords

AC Converter; load bank; optimization; polynomial model; thyristor

Abstract

The development of adaptable three-phase load banks is essential for testing and evaluating power systems, distribution networks, and electrical equipment under various operational conditions. These load banks play a critical role in simulating real-world load scenarios, enabling engineers and technicians to assess the performance, stability, and efficiency of electrical systems. Traditional load banks typically rely on fixed or stepped resistive, inductive, and capacitive elements, which often lack the flexibility needed to emulate complex and dynamic load profiles. To overcome these limitations, a variable three-phase load bank based on an AC converter has been proposed as a promising solution. This approach provides continuous adjustability and precise control over load parameters, offering significant advantages over conventional designs. The relationship between the firing angle and normalized input power is modelled using third- and fifth-degree polynomial fits, with statistical evaluation confirming high accuracy: R² values exceed 0.996, and RMSE is below 0.015 for both models. The fifth-degree polynomial demonstrates superior fit at the extremes of the operating range. The system exhibits exceptional performance, with both maximum and mean errors remaining well below 1% and an optimal operating range of 0.02–0.98 of P_max​, is identified to minimize errors and enhances stability. This advancement highlights the potential of AC converter-based load banks as a reliable and efficient tool for modern power system testing and validation.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - I Ketut Suryawan
AU  - I Gusti Ngurah Agung Dwijaya Saputra
AU  - Made Wiryana
PY  - 2025
DA  - 2025/12/31
TI  - Variable Three-Phase Load Bank Using AC Converter
BT  - Proceedings of the International Conference on Applied Science and Technology on Engineering Science 2025 (iCAST-ES 2025)
PB  - Atlantis Press
SP  - 250
EP  - 257
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-926-1_29
DO  - 10.2991/978-94-6463-926-1_29
ID  - Suryawan2025
ER  -