Location History:
- Chiyoda-ku, JP (2008)
- Hitachi, JP (2015)
- Hitachinaka, JP (2006 - 2021)
- Ibaraki, JP (2023)
Company Filing History:
11 out of 2,028 
5 out of 42,496 
1 out of 69 
Years Active: 2006-2023
Title: The Innovative Contributions of Satoru Shigeta
Introduction
Satoru Shigeta is a prominent inventor based in Hitachinaka, Japan. He has made significant contributions to the field of control devices and power conversion technologies. With a total of 17 patents to his name, Shigeta's work has had a substantial impact on the industry.
Latest Patents
Shigeta's latest patents include a control device and failure determination method. This invention allows for the determination of a failure phase of an AC current sensor without the need for a DC current sensor. The control device manages a motor through an inverter circuit that converts direct current to three-phase alternating current. It utilizes a current sensor to detect the alternating current of each phase and calculates estimated DC current values based on the PWM signal's duty value and the AC current values of two phases. This innovative approach enables the determination of sensor failures based on changes in the estimated DC current values.
Another notable patent is the inverter control device and power conversion device. This invention focuses on diagnosing a current sensor while maintaining high reliability. The inverter control device calculates an estimated direct current value based on the duty value and the output from an alternating current sensor. It performs diagnostics on a direct current sensor using the estimated direct current value and the direct current sensor's output.
Career Highlights
Throughout his career, Satoru Shigeta has worked with esteemed companies such as Hitachi Automotive Systems, Ltd. and Hitachi, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in technology.
Collaborations
Shigeta has collaborated with notable colleagues, including Takashi Ogura and Hiroaki Igarashi. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Satoru Shigeta's contributions to the field of control devices and power conversion are noteworthy. His innovative patents and collaborations with industry leaders highlight his significant role in advancing technology. His work continues to influence the industry and inspire future innovations.