Reijo Kalevi Virtanen

Title: Reijo Kalevi Virtanen: Innovator in Electric Drive Systems

Introduction

Reijo Kalevi Virtanen is a notable inventor based in Vantaa, Finland. He has made significant contributions to the field of electric drive systems, holding a total of 6 patents. His work focuses on innovative methods and arrangements that enhance the efficiency and functionality of electric devices.

Latest Patents

Among his latest patents is a method and arrangement in connection with an electric device system. This invention provides a comprehensive solution for electric drive systems, incorporating an intermediate circuit with multiple supply units and inverter units. The system features an electric machine with several three-phase windings that are galvanically separated. Additionally, the arrangement includes main circuit switches and intermediate circuit switches that facilitate the separation of supply units and inverter units from the electric machine. Another significant patent is a control method for a doubly-fed electric generator. This method utilizes a frequency converter with a torque and flux controller, which is connected to the rotor of the generator. The frequency converter calculates essential parameters to optimize the generator's performance.

Career Highlights

Reijo has worked with prominent companies such as ABB Oy and ABB Schweiz AG. His experience in these organizations has allowed him to develop and refine his innovative ideas in electric drive systems.

Collaborations

Throughout his career, Reijo has collaborated with talented individuals, including Osmo Pasuri and Jorma Keronen. These partnerships have contributed to the advancement of his projects and inventions.

Conclusion

Reijo Kalevi Virtanen is a distinguished inventor whose work in electric drive systems has led to multiple patents and innovative solutions. His contributions continue to impact the field positively, showcasing the importance of innovation in technology.