Hiromitsu Terui

Title: Hiromitsu Terui: Innovator in Power Electronics

Introduction

Hiromitsu Terui is a notable inventor based in Niiza, Japan. He has made significant contributions to the field of power electronics, holding three patents that showcase his innovative spirit and technical expertise.

Latest Patents

One of his latest patents is the "Multiphase Power Factor Improvement Circuit." This invention involves a rectification circuit that rectifies an alternating current voltage from an alternating current power supply. The circuit features a parallel converter with converters corresponding to phases, connected in parallel to the output terminal of the rectification circuit. Each converter includes a reactor, a switching circuit in series with the reactor, and a diode also in series with the reactor. A smoothing capacitor is connected to the output terminal of the parallel converter. The control circuit generates pulse signals based on an error voltage between the output voltage of the smoothing capacitor and a reference voltage, as well as the output voltage of the rectification circuit. This circuit switches the switching circuits in the converters using the generated pulse signals. Additionally, current detection circuits are included to monitor the currents flowing through the switching circuits.

Another significant patent is the "Bidirectional DC-DC Converter." This invention comprises a series circuit of a first winding of a first reactor, a second reactor, and a first switch connected to both ends of a first DC power source. It also includes a series circuit of a second switch and a second DC power source connected to both ends of the first switch. The design features a series circuit of a second winding of the first reactor, a third reactor, a first selector switch, and a first diode connected to both ends of a series circuit of the second reactor and the first switch. A controller is responsible for turning on and off the switches and selector switches.

Career Highlights

Hiromitsu Terui has worked with prominent organizations such as Sanken Electric Co., Ltd. and Shimane University. His experience in these institutions has allowed him to develop and refine his innovative ideas in power electronics.

Collaborations

Throughout his career, Terui has collaborated with notable colleagues, including Hideki Asuke and Hideharu Takano. These partnerships have contributed to his success and the advancement of his inventions.

Conclusion

Hiromitsu Terui is a distinguished inventor whose work in power electronics has led to significant advancements in the field. His patents