Company Filing History:
Years Active: 1986-1988
Title: Innovations of Hideyuki Shimonabe
Introduction
Hideyuki Shimonabe is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of control systems for pulse width modulation (PWM) inverters. With a total of 4 patents to his name, Shimonabe's work has had a considerable impact on the efficiency and functionality of electrical systems.
Latest Patents
Shimonabe's latest patents include a method and apparatus for selectively controlling an operation mode of a PWM inverter. This invention involves controlling a PWM inverter for ignition using a pulse produced with a carrier wave and a modulation wave. The method samples the amplitude of the modulation wave at a cycle rate related to the frequency of the carrier wave, ensuring synchronization when the sampled amplitude exceeds the carrier wave's amplitude.
Another significant patent is a control system for PWM inverters that drives an induction motor at variable voltage and frequency while maintaining a constant ratio of output voltage to output frequency. This system includes components for detecting effective current, setting output frequency, and calculating necessary corrections based on load conditions. These innovations enhance the performance and adaptability of PWM inverters in various applications.
Career Highlights
Shimonabe is currently employed at Hitachi, Ltd., where he continues to develop advanced technologies in electrical engineering. His work at Hitachi has allowed him to collaborate with other talented engineers and contribute to cutting-edge projects that push the boundaries of current technology.
Collaborations
Some of his notable coworkers include Motonobu Hattori and Nobuyoshi Mutoh. Their collaborative efforts have led to advancements in the field and have fostered a productive environment for innovation.
Conclusion
Hideyuki Shimonabe's contributions to the field of electrical engineering through his patents and work at Hitachi, Ltd. highlight his role as a significant inventor. His innovative approaches to PWM inverter technology continue to influence the industry and pave the way for future advancements.