Company Filing History:
Years Active: 2013-2018
Title: Noriyuki Nagayama: Innovator in Excitation Inrush Current Suppression
Introduction
Noriyuki Nagayama is a prominent inventor based in Tokorozawa, Japan. He has made significant contributions to the field of electrical engineering, particularly in the area of excitation inrush current suppression. With a total of 4 patents to his name, Nagayama's work has had a notable impact on the industry.
Latest Patents
Nagayama's latest patents include an "Excitation Inrush Current Suppressing Apparatus" and an "Excitation Inrush Current Suppressing Method." The excitation inrush current suppressing apparatus features bus voltage measurement equipment that measures each phase voltage of the single-phase AC-side bus. It also includes transformer voltage measurement equipment that measures the single-phase-side voltage of the transformer. A phase detector is incorporated to detect the cutoff phase when opening the circuit breaker, ensuring that the circuit breaker closes by the same voltage phase as the cutoff phase output from the phase detector. The excitation inrush current suppression device is designed to suppress excitation inrush currents flowing through a breaker of the three-phase collective operation type. It measures the three-phase AC voltage of the power supply bus bar to calculate prospective magnetic fluxes of the transformer and ensures that the breaker is closed when the polarities of the prospective magnetic fluxes agree with the polarities of the residual magnetic fluxes.
Career Highlights
Nagayama is currently employed at Kabushiki Kaisha Toshiba, a leading company in the technology sector. His work at Toshiba has allowed him to develop innovative solutions that address critical challenges in electrical engineering. His expertise in excitation inrush current suppression has positioned him as a key figure in this specialized field.
Collaborations
Nagayama has collaborated with notable coworkers such as Tadashi Koshizuka and Shiro Maruyama. Their combined efforts have contributed to advancements in technology and innovation within their projects.
Conclusion
Noriyuki Nagayama's contributions to the field of electrical engineering, particularly in excitation inrush current suppression, highlight his innovative spirit and dedication to advancing technology. His patents and work at Toshiba reflect his commitment to improving electrical systems and ensuring their efficiency.