Arc-Resistant Medium-Voltage Drives: Design and Compliance

Date: 19/03/2026

Time: 9:00 am

Presenter: Joable Andrade Alves

Abstract: (Please note: this webinar will be in Portuguese and is sponsored by PELS TC 3.) This webinar presents the key design principles, safety strategies, and validation methods for arc-resistant medium-voltage (MV) drives, with emphasis on compliance with the IEC 62271-200 and IEC 62477-2 standards. Internal arc faults remain one of the most critical hazards in high-power industrial systems, and the growing demand for safer equipment has driven the development of new enclosure designs, containment techniques, pressure-relief solutions, and system-level protective strategies. The presentation will discuss how arc-resistant requirements are incorporated into modern MV drive architectures—including multilevel converter structures—and how mechanical design, thermal management, and protection coordination influence arc behavior and personnel safety. Special attention is given to validation methodologies such as type testing, numerical simulation, and Hardware-in-the-Loop (HIL) approaches used during the equipment development cycle. Applications in extreme environments, such as high-altitude installations above 5000 m and subsea or offshore systems, will be addressed to illustrate additional design constraints related to insulation performance, pressure compensation, cooling, and environmental robustness. Practical case studies from industries such as mining, oil and gas, and large-scale process plants will provide real-world insight into commissioning challenges, motor-drive integration, fault-handling strategies, and lessons learned from field operation. The session aims to give engineers, researchers, and industry professionals a comprehensive overview of the technological advances that enable safer and more reliable medium-voltage variable-speed drive systems.

Joable Andrade Alves is a Research and Development Engineer at WEG Automation, specializing in the design and validation of low- and medium-voltage variable-speed drives. His work focuses on multilevel power converter topologies, advanced digital control, and high-performance motor-drive integration aimed at improving efficiency, reliability, and power quality in industrial applications. He holds a Master’s degree in Electrical Engineering with emphasis on Power Electronics and has been actively engaged in technological innovation projects involving wide bandgap semiconductor devices (SiC), real-time digital control, electromagnetic compatibility, and Hardware-in-the-Loop (HIL) simulation applied to power conversion systems. At WEG, Joable has contributed to the development of next-generation medium-voltage drive platforms, including efforts related to arc-resistant design, compliance with international standards, and system-level performance optimization. His fields of application span key industrial segments such as mining, oil and gas, water treatment, and large-scale continuous-process industries, where reliability and safety are critical requirements. He collaborates closely with universities and research institutes in Brazil and abroad, promoting joint R&D initiatives and supporting graduate-level research in power electronics, control, and energy conversion. Joable is the author and co-author of technical papers presented at national and international conferences, and he actively participates in the dissemination of knowledge through seminars, training programs, and industry–academia partnerships. His professional interests include medium-voltage converter topologies, multilevel modulation strategies, digital twins, protective design for extreme environments, and the integration of advanced semiconductors into high-power industrial systems.