Kouji Obata

Title: Kouji Obata: Innovator in Motor Technology

Introduction

Kouji Obata is a prominent inventor based in Hitachi, Japan, known for his significant contributions to motor technology. With a total of six patents to his name, he has made remarkable advancements in the field of partial discharge detection and motor drive systems.

Latest Patents

Obata's latest patents include an "Apparatus and method for detecting partial discharge at turn-to-turn insulation in motor" and a "Frequency converter, motor, motor drive system and maintenance method for motor drive system." The first patent describes a system that utilizes a surge generator to detect partial discharge currents between winding turns in a motor. This innovative approach allows for the generation of surge voltages that mimic the conditions observed when the motor is driven by an inverter. The second patent focuses on a frequency converter designed to drive motors efficiently, featuring a rise time change unit that adjusts the voltage waveform output from the inverter unit.

Career Highlights

Kouji Obata has dedicated his career to advancing motor technology at Hitachi Industrial Equipment Systems Co., Ltd. His work has not only improved the reliability of motor systems but has also enhanced the safety and efficiency of electrical equipment.

Collaborations

Throughout his career, Obata has collaborated with notable colleagues, including Tadahiro Shimozono and Takeshi Obata. These partnerships have fostered innovation and contributed to the development of cutting-edge technologies in the industry.

Conclusion

Kouji Obata's contributions to motor technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence advancements in electrical engineering and motor systems.