Company Filing History:
Years Active: 1981-1996
Title: Katsuaki Suzuki: Innovator in Inverter Control Technology
Introduction
Katsuaki Suzuki is a prominent inventor based in Kitaibaraki, Japan. He has made significant contributions to the field of electrical engineering, particularly in inverter control technology. With a total of three patents to his name, Suzuki's work has had a substantial impact on the efficiency and functionality of electric railway vehicles.
Latest Patents
Suzuki's latest patents include innovative designs for inverter control apparatuses. One of his notable inventions is an electric railway vehicle control system that features a converter for transforming single-phase alternating current (a.c.) voltage into direct current (d.c.) voltage. This system incorporates a pulse width modulation (PWM) inverter that converts the d.c. output into variable voltage and frequency a.c. voltage, which is then used to drive three-phase induction motors in electric railway vehicles. Additionally, the control system is equipped with a unit that manages the inverter's output voltage in both variable voltage and constant voltage modes, enhancing its adaptability to different operational conditions.
Another significant patent involves an inverter control apparatus that includes a frequency control unit and a voltage control unit. This invention features a frequency adjusting unit that ensures the product of voltage and time in each positive half cycle of the output voltage matches that of the subsequent negative half cycle. This technology is particularly beneficial when used in apparatuses for controlling induction motors, as it allows for precise adjustments based on the detection of ripple factors in the input voltage.
Career Highlights
Katsuaki Suzuki is currently employed at Hitachi, Ltd., where he continues to develop cutting-edge technologies in the field of electrical engineering. His work at Hitachi has positioned him as a key player in advancing inverter control systems, contributing to the company's reputation for innovation and excellence in technology.
Collaborations
Throughout his career, Suzuki has collaborated with notable colleagues, including Tokunosuke Tanamachi and Kiyoshi Nakamura. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and the development of groundbreaking technologies.
Conclusion
Katsuaki Suzuki's contributions to inverter control technology have significantly advanced the efficiency of electric railway vehicles. His innovative patents and ongoing work at Hitachi, Ltd. highlight his commitment to engineering excellence and innovation. Suzuki's impact on the field will continue to influence future developments in electrical engineering.