Yozo Tsuzuki

Title: The Innovative Contributions of Yozo Tsuzuki

Introduction

Yozo Tsuzuki is a notable inventor based in Katsuta, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of control systems for induction motors. His work has been instrumental in enhancing the efficiency and performance of these motors.

Latest Patents

One of Tsuzuki's key patents is for a control apparatus for an induction motor. This innovative device comprises a variable voltage, variable frequency inverter that feeds the motor, controlled by pulse-width modulation (PWM). The apparatus calculates a secondary current component and an exciting current component based on the motor current and actual slip frequency. From the secondary current component, the actual torque produced by the motor is determined. The frequency reference for PWM control is derived from the comparison of actual torque and torque reference, while the modulation factor reference is obtained by comparing the exciting current component with an exciting current reference. This control apparatus allows for high-accuracy torque control of the induction motor.

Career Highlights

Yozo Tsuzuki is associated with Hitachi, Ltd., a leading company in technology and engineering. His work at Hitachi has allowed him to apply his innovative ideas in practical applications, contributing to advancements in motor control technology.

Collaborations

Throughout his career, Tsuzuki has collaborated with esteemed colleagues such as Akira Horie and Yoshiji Jimbo. These collaborations have fostered a creative environment that has led to further innovations in the field.

Conclusion

In summary, Yozo Tsuzuki's contributions to the field of electrical engineering, particularly through his patent for a control apparatus for induction motors, highlight his innovative spirit and dedication to advancing technology. His work continues to influence the industry and inspire future innovations.