Kojin Abe

Title: Kojin Abe: Innovator in Power Conversion Technology

Introduction

Kojin Abe is a distinguished inventor based in Hitachi, Japan, with a notable portfolio comprising four patents that significantly contribute to the field of power electronics. His work primarily focuses on resonant converters and switching power supplies, which are essential in modern electronic applications.

Latest Patents

Abe’s innovative contributions include two of his latest patents. The first patent details a resonant converter designed for stabilized operation of switching devices. This invention incorporates an impedance for short-circuit prevention, which is connected to the secondary winding side of the transformer within a resonant circuit. This configuration allows the converter to obviate oscillation stops by detecting returning current to the D.C. input power source, thereby preventing unnecessary surge voltages in the switching devices.

The second patent revolves around a switching power supply using a saturable reactor to control switching elements. In this self-oscillating switching power supply, the key innovation lies in the integration of a sense circuit that detects the output. The feedback from this circuit enables the conversion of an analog signal into a pulse signal at the precise moment when the switching element needs to be turned off, ensuring high output voltage precision with a simplified circuit arrangement.

Career Highlights

Kojin Abe has made significant strides in his career, having worked for reputable companies such as Hitachi, Ltd. and Hitachi Metals, Ltd. His roles in these organizations have allowed him to be at the forefront of developing advanced technologies in power conversion.

Collaborations

Throughout his career, Abe has collaborated with talented individuals, including Kenichi Onda and Tsugio Ogawa. These collaborations have played a crucial role in fostering innovation and propelling advancements in electrical engineering.

Conclusion

Kojin Abe’s innovative spirit and dedication to developing cutting-edge technologies in power conversion have cemented his status as a notable inventor in the industry. With a robust patent portfolio and impactful collaborations, he continues to contribute to the evolution of power electronics, paving the way for future advancements.