Kiyoshi Eguchi

Title: Kiyoshi Eguchi: Innovator in AC Rotary Machine Control

Introduction

Kiyoshi Eguchi is a prominent inventor based in Fukuyama, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of control apparatuses for AC rotary machines. With a total of 13 patents to his name, Eguchi's work has had a lasting impact on the industry.

Latest Patents

One of Eguchi's latest patents is a control apparatus for AC rotary machines. This innovative control system manages the starting process of an AC rotary machine by calculating a resistance drop component. This component corresponds to the resistance drop of the machine based on a detection current. The system adjusts the angular frequency of the AC output voltage by subtracting the resistance drop component from a voltage command. Simultaneously, it modifies the amplitude of the AC output voltage to ensure that the amplitude of the AC phase current changes according to a predetermined function.

Another notable invention is an inverter device. In this device, when the power source connected to an electrolytic capacitor is interrupted, a switching control circuit manages the switching elements of the inverter main circuit. This operation supplies current to a load, discharging the charges of the electrolytic capacitor. Additionally, an electrostatic capacitance calculator determines the electrostatic capacitance of the electrolytic capacitor based on the discharged charge amount and the discharge time, as well as the voltage drop during discharging.

Career Highlights

Throughout his career, Kiyoshi Eguchi has worked with several esteemed companies, including Mitsubishi Denki Kabushiki Kaisha and Mitsubishi Electric Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in electrical engineering.

Collaborations

Eguchi has collaborated with notable colleagues such as Takayoshi Ishikawa and Yasushi Genba. Their teamwork has fostered an environment of creativity and innovation, leading to the development of advanced technologies in their field.

Conclusion

Kiyoshi Eguchi's contributions to the field of electrical engineering, particularly in AC rotary machine control and inverter devices, showcase his innovative spirit and technical expertise. His numerous patents reflect his commitment to advancing technology and improving efficiency in electrical systems.