Lotus Wireless Technologies India Pvt. Ltd. and AIT Austrian Institute of Technology GmbH are advancing their joint work on medium-voltage solid-state transformer (SST) technology, targeting applications such as megawatt-scale charging for passenger cars, heavy-duty vehicles, and electric buses. The collaboration is moving into a new phase focused on industrialisation and validation under real operating conditions, with India identified as a key deployment market.
The partnership is supported by growing cooperation between Europe and India in technology and manufacturing, including positive momentum from the ongoing EU-India trade discussions. The company’s objective is to scale medium-voltage SSTs that combine power electronics with medium-frequency transformers to enable compact, lightweight, and efficient energy conversion systems.
Friederich Kupzog, Head of the Center for Energy at AIT Austrian Institute of Technology GmbH, said the collaboration aims to address the requirements of large and fast-growing energy markets. “With a shared ambition to industrialize medium-voltage solid-state transformers for megawatt charging of cars, heavy-duty vehicles, and buses, this partnership represents a unique opportunity for AIT to make a significant impact on global electrification,” Kupzog said. He added that countries such as India and China are unlikely to depend solely on conventional 50 hertz alternating-current systems to meet rising energy demand.
Kupzog also referred to the ongoing expansion of Lotus Wireless Technologies’ infrastructure in India. He said the construction of a new research and development facility in Visakhapatnam would enhance available testing and collaboration space and reflects a long-term commitment to medium-voltage power electronics development.
Binu Pillai, Director at Lotus Wireless Technologies, said the company values continued technical collaboration with AIT and the Technical University of Leoben and described SST technology as central to the evolution of next-generation power electronics and electrification infrastructure.
Recent joint testing marked an important technical milestone. During a visit by Professor Dr. Markus Makoschitz of the Technical University of Leoben and AIT Austrian Institute of Technology, the partners conducted load tests on a solid-state transformer jointly developed by AIT and LWT. The system was tested with a 15 kilovolt direct-current input and a 1,200 volt direct-current output at a load level of 500 kilowatts.
The tests demonstrated stable high-voltage insulation performance, controlled electric-field distribution, and compliance with medium-voltage direct-current stress requirements under operating conditions. Binu Pillai said validation at 15 kilovolts direct current represents a step toward practical deployment of solid-state architectures in medium-voltage direct-current power systems.
Lotus Wireless Technologies India Pvt. Ltd. is an India-based technology company focused on advanced power electronics and energy systems, while AIT Austrian Institute of Technology GmbH is a research organisation specialising in applied research across energy, mobility, and digital technologies.