Location History:
- Hitachi, JP (2001 - 2002)
- Hitachinaka, JP (1998 - 2015)
Company Filing History:
26 out of 42,496 
1 out of 9 Years Active: 1998-2015
Title: **Masahiro Nagasu: Innovator in Power Conversion Technologies**
Introduction
Masahiro Nagasu is a prominent inventor based in Hitachinaka, Japan, recognized for his significant contributions to the field of power conversion technologies. With a remarkable portfolio of 26 patents, Nagasu has developed innovative solutions that enhance the efficiency and effectiveness of electrical power systems.
Latest Patents
Among his latest patents, Nagasu's work on power converters stands out. One of his innovations includes a power converter that comprises a first electric power conversion unit featuring an inverter designed for converting a first direct current (DC) electric power into alternating current (AC) electric power. Additionally, he developed a sophisticated control device for railway vehicles that manages an inverter based on the direct-current link voltage between the terminals of a filter capacitor. In this invention, the system smartly combines direct-current voltage from power storage equipment with overhead wire voltage, optimizing the performance of railway systems by utilizing voltage sensors to effectively manage electrical inputs.
Career Highlights
Nagasu's career spans prominent companies where he has applied his expertise in electrical engineering. He has notably worked with **Hitachi, Ltd.** and **Hitachi Information & Control Systems, Inc.**, contributing his innovative ideas to advance power conversion technology in railway vehicles and other applications.
Collaborations
Throughout his career, Masahiro Nagasu has collaborated with notable colleagues such as Katsumi Ishikawa and Yutaka Sato. Their teamwork has led to insights and advancements in technology that bolster the efficiency of railway systems and electrical power management.
Conclusion
Masahiro Nagasu remains a key figure in the realm of power conversion, with a strong legacy of innovation marked by numerous patents and impactful contributions. His work not only enhances railway vehicle technology but also serves as a foundation for future advancements in electrical power systems. With a passionate commitment to innovation, Nagasu continues to influence the industry and inspire fellow inventors.