Jinkoo Choo

Title: Jinkoo Choo: Innovator in Induction Motor Control Technology

Introduction

Jinkoo Choo is a notable inventor based in Kashiwa, Japan. He has made significant contributions to the field of electrical engineering, particularly in the control of induction motors. His innovative approach has led to the development of a patented technology that enhances the performance and accuracy of motor control systems.

Latest Patents

Jinkoo Choo holds a patent for a "Control apparatus for an induction motor." This control apparatus features a variable voltage, variable frequency inverter that feeds the motor, which is managed through PWM control. The system calculates a secondary current component and an exciting current component based on the motor current and the 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 innovative control apparatus allows for high-accuracy torque control of the induction motor.

Career Highlights

Jinkoo Choo is currently employed at Hitachi, Ltd., where he continues to work on advancements in motor control technologies. His expertise in this area has positioned him as a valuable asset to the company and the industry at large.

Collaborations

Throughout his career, Jinkoo has collaborated with esteemed colleagues such as Akira Horie and Yoshiji Jimbo. These partnerships have fostered an environment of innovation and have contributed to the success of various projects.

Conclusion

Jinkoo Choo's contributions to induction motor control technology exemplify the impact of innovative thinking in engineering. His patent and ongoing work at Hitachi, Ltd. highlight his commitment to advancing motor control systems.