As explained by ScienceDirect in the article “Influence of Busbar Trunking System Design on Thermal Performance Operating with Non-Sinusoidal Currents,” the selection of busbar trunking systems (BTS) is essential to maintaining operational safety and reliability, especially in systems impacted by harmonic currents like those found in EV charging stations and microgrids. This study highlights how these currents can reduce the current-carrying capacity of BTS, particularly when semiconductor-based converters generate harmonic frequencies, which cause increased heat in the busbars. 

The research conducted using electromagnetic field and thermal analyses outlines how varying busbar designs perform under harmonic conditions. For instance, systems with a single neutral can handle up to 25% of harmonic currents, while configurations with two neutral conductors can handle between 22% and 39%. BTS with increased conductor cross-sections showed the highest capacity, handling up to 44% of harmonic currents. The findings emphasize that selecting the right busbar design, such as models with increased cross-section, is essential for maintaining system stability and preventing overheating in high-demand applications.

Busbar trunking systems, known for their modular and space-saving design, are widely used in data centers, hospitals, and industrial facilities. However, as the research notes, the impact of harmonic currents on busbar temperature underscores the importance of selecting an appropriate system configuration based on total harmonic distortion (THD) values. BTS with robust neutral designs and optimized cross-sections can significantly reduce the risk of overheating and maintain efficient current distribution.

American Power Connection Systems supports industries in addressing these challenges by providing reliable busbar solutions designed for demanding environments. Learn more about our products and capabilities here.

Article with all rights reserved, courtesy of ScienceDirect: