Tomonori Ujiie

Title: Tomonori Ujiie: Innovator in Power Conditioning Technology

Introduction

Tomonori Ujiie is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of power conditioning technology. His innovative work has led to the development of a unique patent that addresses ground fault detection.

Latest Patents

Tomonori Ujiie holds a patent for a "Ground fault detector and power conditioner with input-side ground fault detection." This power conditioner includes an inverter circuit that converts a DC voltage into an AC voltage. It features a voltage dividing circuit connected to both the positive and negative electrode input terminals. The ground fault detector receives a voltage divided by the voltage dividing circuit as an input voltage signal. It detects the occurrence of a ground fault based on the magnitude of the input voltage signal. The ground fault detector emits an AC ground fault detection signal when the input voltage signal includes a first voltage signal with a frequency equal to or higher than a predetermined first frequency. Additionally, it identifies when the deviation of the first voltage signal with respect to an AC ground reference potential is equal to or larger than an AC ground fault detection voltage.

Career Highlights

Tomonori Ujiie is currently employed at Toshiba Mitsubishi-Electric Industrial Systems Corporation. His work at this esteemed company has allowed him to further his research and development in power conditioning technologies.

Collaborations

He has collaborated with notable coworkers, including Tomoya Katsukura and Masahiro Kinoshita. Their combined expertise has contributed to advancements in their field.

Conclusion

Tomonori Ujiie's innovative contributions to power conditioning technology exemplify his dedication to improving electrical safety and efficiency. His patent reflects a significant advancement in ground fault detection systems.