Micromobility: greater efficiency through new semiconductor technology

Within the research project MicroGaN, Brose is working together with Coburg University of Applied Sciences and Sumida Components & Modules GmbH to significantly enhance drives for light vehicles. Through this collaboration, the Franconian automotive supplier is driving technological progress in the field of micromobility and strengthening its role in this rapidly growing global future market. The focus is on the use of gallium nitride power semiconductors in combination with conventional silicon-based power electronics. This hybrid semiconductor approach reduces energy losses and thus provides greater range and driving dynamics – even at high speeds.

Collaborating with research institutions and partners is essential for us in order to strategically advance innovations and increase the speed of their implementation, says Bernd Schemer, Chief Technology Officer and Managing Director Drive Systems at Brose. By pooling our expertise, we aim to deepen our technical know-how and further differentiate ourselves in global competition, adds Dr. Thomas Börnchen, Project Manager in Central Development at Brose.

High performance in all situations

For today’s power electronics, Brose uses silicon-based semiconductors that are efficient and economical. Drive systems based on these technologies require more current at high speeds than would theoretically be necessary. In addition, when the battery’s state of charge decreases, the battery voltage drops. This is an effect we particularly expect with new resource-efficient battery types such as sodium-ion batteries, explains Professor Dr. Marco Denk from Coburg University of Applied Sciences. The additional use of gallium nitride power semiconductors can intelligently compensate for this.

Significantly more driving pleasure and comfort

The new technology offers tangible benefits for users: Especially in dense urban traffic, where frequent starting and maneuvering are part of everyday life, sufficient acceleration is essential. We expect a significantly improved driving dynamics, says Bernd Schemer. In addition, the more powerful drive system is intended to enable greater ranges or, alternatively, allow the use of smaller batteries.

The global micromobility market is experiencing strong growth. Drivers of this development include increasing urbanization, stricter regulatory requirements, technological advances, and the growing demand for sustainable mobility solutions. The project partners see MicroGaN as an important step toward developing high-performance, efficient, and sustainable drive solutions for the micromobility of the future. The research project runs until December 31, 2027, and is funded by the Free State of Bavaria.