Location History:
- Ome, JP (2001)
- Tokyo, JP (2002)
Company Filing History:
Years Active: 2001-2002
Title: **Innovative Contributions of Tadamitsu Yoshikawa**
Introduction
Tadamitsu Yoshikawa is an esteemed inventor based in Tokyo, Japan, known for his significant contributions to power conversion devices and motor control apparatuses. With a total of two patents to his name, his work has made considerable advances in technology that enhance efficiency and control in electrical engineering.
Latest Patents
Yoshikawa's latest patents showcase his expertise in the field of power systems. The first patent, titled "Power conversion device with power source voltage drop detection unit," introduces a novel approach to detecting voltage fluctuations in AC power sources. This invention utilizes a power source voltage detection circuit that includes a transformer, rectifier, and A/D converter. By averaging the AC power source voltage signal, it effectively compares average and instantaneous values, outputting a detection signal to prevent spurious voltage drop detections.
The second patent, "Motor control apparatus," presents an innovative solution for precise torque output in motor applications. This device integrates a field weakening mechanism that converts velocity feedback signals into a secondary magnetic flux reference. A field pattern selector then processes these signals, allowing for better control in adjusting the field patterns, thereby achieving accurate torque performance.
Career Highlights
Yoshikawa's professional journey is marked by his association with Kabushiki Kaisha Toshiba, a leading company in the technological sector. His involvement in research and development has positioned him as a key player in innovative electrical solutions.
Collaborations
Throughout his career, Tadamitsu Yoshikawa has collaborated effectively with colleagues such as Yoshihito Kato and Hiroaki Matsumoto. These partnerships have fostered a collaborative environment that drives technological advancements, enabling the successful execution of projects that impact the industry significantly.
Conclusion
In summary, Tadamitsu Yoshikawa's inventive spirit and dedication to technology have led to significant innovations in power conversion and motor control systems. His contributions not only benefit his company but also advance the field of electrical engineering, showcasing the importance of collaboration and ingenuity in achieving technological progress.