Tomoyuki Tohyama

Title: **Innovator Spotlight: Tomoyuki Tohyama**

Introduction

Tomoyuki Tohyama, an accomplished inventor based in Chita, Japan, has made substantial contributions to the field of electrical engineering. With a total of three patents to his name, his work primarily focuses on the development of innovative devices that enhance information processing and energy efficiency in electric machines.

Latest Patents

Among his latest patents, Tohyama has developed an information processing device, an information storage device, and a control device for a rotary electric machine. His control device includes a current command value calculating unit that determines command values for rotor and stator windings based on torque command values. The calculations are influenced by an evaluation function that accounts for total copper loss, employing first and second magnetic interference models. These models represent complex relationships between current and linkage magnetic flux, optimizing the performance of the electric machine.

Another notable patent involves a rotor for a rotating electric motor, which features a hollow cylindrical rotor core constructed of laminated electromagnetic steel plates. The design allows for improved efficiency as it strategically faces magnetic gaps at both the inner and outer circumferential surfaces. The rotor core is innovatively positioned between two rotating support members, where a specially designed tubular pin utilizes fluid pressure for precise deformation, ensuring optimal contact and performance.

Career Highlights

Throughout his career, Tomoyuki Tohyama has worked with notable companies such as Toyota Jidosha Kabushiki Kaisha and Toyota Chuo Kenkyusho. His experience at these leading automotive enterprises has significantly influenced his innovation journey, allowing him to apply his engineering skills to practical automotive technologies.

Collaborations

Tohyama has collaborated with talented colleagues, including Takao Watanabe and Eiji Tsuchiya. These partnerships have fostered a creative environment, leading to the development of cutting-edge technologies that address contemporary challenges in electric motor design and energy management.

Conclusion

Tomoyuki Tohyama is a prominent figure in the realm of electrical engineering and innovation. His extensive work, encapsulated in his patents, reflects his commitment to improving the efficiency and performance of electric machines. As technology continues to evolve, Tohyama's contributions will likely play a significant role in shaping the future of energy-efficient systems.