Hajime Uematsu

Title: Hajime Uematsu: Innovator in Motor Control Technology

Introduction

Hajime Uematsu is a notable inventor based in Narashino, Japan. He has made significant contributions to the field of motor control technology, holding a total of 4 patents. His work focuses on enhancing the efficiency and reliability of various motor-driven systems.

Latest Patents

Uematsu's latest patents include a motor controller, air compressor, air conditioner, and controllers for passenger conveyors. One of his key inventions is a motor control apparatus designed for synchronous motors. This apparatus features a receiver section that detects temperature values from a sensor installed within the motor. By adjusting the current fed into the motor based on the detected temperature, Uematsu's invention ensures stable startup and prolongs the life of semiconductor elements. Another significant patent is a beat-less controller for permanent magnet motors. This innovation estimates the DC-voltage pulsating frequency and uses it to correct the output voltage of the inverter, enhancing the performance of the driving system.

Career Highlights

Throughout his career, Uematsu has worked with prominent companies such as Hitachi Industrial Equipment Systems Co., Ltd. and Hitachi, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in motor control technology.

Collaborations

Uematsu has collaborated with notable coworkers, including Kazuaki Tobari and Masakazu Hase. Their combined expertise has contributed to the advancement of motor control systems and related technologies.

Conclusion

Hajime Uematsu's contributions to motor control technology have made a significant impact in the field. His innovative patents and collaborations reflect his dedication to enhancing the efficiency and reliability of motor-driven systems.