Hozo Yoshino

Title: Hozo Yoshino: Innovator in Synchronous Motor Technology

Introduction

Hozo Yoshino is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of motor control systems, holding a total of 9 patents. His work focuses on enhancing the efficiency and functionality of synchronous motor drive systems.

Latest Patents

One of Yoshino's latest patents is a synchronous motor drive system and synchronous motor drive method. This innovation is built upon prior art inverter architecture, specifically utilizing pulse code width modulation (PCWM). The system operates as an open-loop motor control without sensing the rotor position. However, it employs a closed-loop method to directly track the optimum efficiency motor operating point. A bench load test is conducted to gather data for an AI-type control system. This includes load angle versus voltage command charts and power factor versus voltage command charts, with load levels as parameters for specific frequency command ranges. Consequently, the optimum efficiency motor operating points are generated a priori, and the AI-type control is designed to track these points effectively.

Career Highlights

Throughout his career, Hozo Yoshino has worked with notable companies such as System Homes Company, Ltd. and Mitsubishi Electric Corporation. His experience in these organizations has contributed to his expertise in motor technology and control systems.

Collaborations

Yoshino has collaborated with esteemed colleagues, including Mitsuo Koshi and Osamu Sumiyoshi. Their joint efforts have further advanced the field of synchronous motor technology.

Conclusion

Hozo Yoshino's innovative work in synchronous motor drive systems showcases his dedication to improving motor efficiency and control. His contributions have made a lasting impact on the industry, and his patents reflect his commitment to technological advancement.