Hisashi Umemoto

Title: Hisashi Umemoto: Innovator in Power Conversion Technology

Introduction

Hisashi Umemoto is a prominent inventor based in Tokai, Japan, known for his significant contributions to power conversion technology. With a total of eight patents to his name, Umemoto has made strides in the development of electric power conversion apparatuses that enhance efficiency and functionality in various applications.

Latest Patents

Among his latest innovations, Umemoto has developed a power conversion apparatus that features a rotating electric machine with a winding, an inverter comprising a series-connection body of upper and lower arm switches, and a capacitor connected in parallel. This apparatus includes a connection path that links the winding to both a negative-electrode side of a first storage battery and a positive-electrode side of a second storage battery. A control unit manages the switching of the arm switches to facilitate current flow between the two storage batteries through the inverter and winding.

Another notable invention is an electric power conversion apparatus that consists of a rotating electric machine with armature windings. This apparatus includes two inverters connecting the armature windings to first and second storage batteries, along with a changeover switch that connects or disconnects between positive and negative buses. The operating unit performs energization processes alternately, allowing for efficient energy transfer between the storage batteries.

Career Highlights

Umemoto has worked with esteemed companies such as Denso Corporation and Adeka Corporation, where he has honed his skills and contributed to groundbreaking projects in the field of electrical engineering. His experience in these organizations has played a crucial role in shaping his innovative approach to power conversion technologies.

Collaborations

Throughout his career, Umemoto has collaborated with talented individuals, including Manabu Yamada and Kouhei Yamamoto. These partnerships have fostered a creative environment that has led to the development of advanced technologies in the industry.

Conclusion

Hisashi Umemoto's work in power conversion technology exemplifies the impact of innovation in the field of electrical engineering. His patents reflect a commitment to enhancing energy efficiency and functionality, making him a notable figure in the realm of inventors.