Location History:
- Hitachi, JP (2008 - 2012)
- Tokyo, JP (2012)
Company Filing History:
Years Active: 2008-2012
Title: Hirohisa Satomi: Innovator in Power Conversion Technology
Introduction
Hirohisa Satomi is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of power conversion technology, holding a total of 6 patents. His work focuses on enhancing the efficiency and reliability of power systems, particularly in complex applications such as nuclear power plants.
Latest Patents
One of Satomi's latest patents is a power converter and motor driving system. The objective of this invention is to provide a power converter capable of detecting open-phase conditions across a broader frequency range while maintaining a predetermined relationship between output voltage and frequency. This innovative power converter includes an inverter unit with phase unit inverters, an inverter controller, and multiple transformers for voltage detection. The controller is equipped with a fault detection unit to ensure operational reliability.
Another significant patent involves a method for operating a nuclear power plant. This invention describes a power supply system for a recirculation pump motor, which utilizes a voltage source inverter and circuit breakers to facilitate no-load operation. The method allows for the replacement of traditional induction motors and hydraulic couplings with more efficient technologies, enhancing the overall performance of existing nuclear plants.
Career Highlights
Hirohisa Satomi has worked with prominent companies such as Hitachi, Ltd. and Hitachi-GE Nuclear Energy, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in power conversion and motor control systems.
Collaborations
Throughout his career, Satomi has collaborated with talented individuals, including Daisuke Tan and Masashi Sugiyama. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.
Conclusion
Hirohisa Satomi's contributions to power conversion technology demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of complex systems and a drive to improve efficiency in critical applications. His work continues to influence the field and inspire future advancements.