Location History:
- Hitachinaka, JP (2022)
- Ibaraki, JP (2023)
Company Filing History:
Years Active: 2022-2023
Title: Ryoichi Inada: Innovator in Control Devices and Power Conversion Technology
Introduction
Ryoichi Inada is a notable inventor based in Hitachinaka, Japan. He has made significant contributions to the field of control devices and power conversion technology. With a total of 2 patents to his name, Inada's work focuses on enhancing the efficiency and reliability of electrical systems.
Latest Patents
Inada'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 detection of sensor failures by analyzing changes in the estimated DC current values.
Another significant patent is a power conversion device with an inverter circuit. This invention aims to improve availability during power loss situations. The device features a gate drive power supply circuit that operates within a predetermined normal voltage range. Additionally, a backup power supply circuit is included to provide gate drive power to the lower arm gate circuit when the voltage from the primary supply falls below the normal range. This ensures that the lower arm switching circuit can continue to function effectively, even in adverse conditions.
Career Highlights
Ryoichi Inada is currently employed at Hitachi Astemo Ltd., where he continues to develop innovative technologies. His work has been instrumental in advancing the capabilities of electrical systems, particularly in the automotive and industrial sectors.
Collaborations
Inada collaborates with Keisuke Hayasaka, contributing to the development of cutting-edge technologies in their field. Their partnership exemplifies the importance of teamwork in driving innovation.
Conclusion
Ryoichi Inada's contributions to control devices and power conversion technology highlight his role as a leading inventor in Japan. His patents reflect a commitment to improving the efficiency and reliability of electrical systems. Through his work at Hitachi Astemo Ltd. and collaborations with fellow innovators, Inada continues to make a significant impact in the field.