Location History:
- Vasteras, SE (2012 - 2019)
- Västerås, SE (2021)
Company Filing History:
Years Active: 2012-2021
Title: The Innovations of Stefan Roxenborg
Introduction
Stefan Roxenborg is a notable inventor based in Vasteras, Sweden. He has made significant contributions to the field of electrical engineering, particularly in the area of ground fault protection and monitoring systems. With a total of 8 patents to his name, Roxenborg's work reflects a commitment to advancing technology and improving safety in electrical systems.
Latest Patents
One of Roxenborg's latest patents is an "Arrangement for injection-based ground fault protection handling." This innovative arrangement includes several stator windings of an electric machine connected to a neutral point. It features a first transformer with at least one primary winding connected to a measurement point of the stator windings and a secondary winding for measuring an electrical quantity of the machine. Additionally, a second transformer is included, which connects the neutral point to ground potential, allowing for signal injection and response detection. The impedance of this transformer is designed to match that of the machine, enhancing its effectiveness.
Another significant patent is for "Monitoring torsional oscillations in a turbine-generator." This device and method are designed to detect mechanical torsional oscillations in the rotor shaft of a turbine-generator system. It is particularly useful for systems with multiple turbines interconnected by a common turbine shaft, ensuring operational stability and safety.
Career Highlights
Throughout his career, Stefan Roxenborg has worked with prominent companies such as ABB Research Ltd. and ABB Schweiz AG. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in electrical engineering.
Collaborations
Roxenborg has collaborated with several talented individuals in his field, including Tord Bengtsson and Henrik Johansson. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Stefan Roxenborg's contributions to electrical engineering through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, paving the way for future innovations in safety and efficiency.