Naoki Oomura

Title: Naoki Oomura: Innovator in Motor Control Technology

Introduction

Naoki Oomura is a prominent inventor based in Minato-ku, Japan. He has made significant contributions to the field of motor control technology, holding a total of 8 patents. His work focuses on developing advanced integrated circuits and motor driving apparatuses that enhance the efficiency and performance of synchronous motors.

Latest Patents

One of Oomura's latest patents is a motor control integrated circuit. This innovative circuit outputs predetermined PWM signals to an inverter circuit that drives a synchronous motor. It is designed to perform on-off control on multiple three-phase bridge connected switching elements according to the PWM signals. This technology converts direct current into three-phase alternating current. The circuit includes a PWM generation unit that generates signals based on a received speed command value and a current detection unit that detects differential values of phase currents at a specific time point within a carrier wave period used for PWM control. The PWM generation unit calculates the speed of the synchronous motor based on these differential values and generates the appropriate PWM signals.

Another notable patent is a semiconductor integrated circuit and motor driving apparatus. This apparatus features a brushless motor and includes a position sensor that outputs a position detection signal synchronized with the phase of an induced voltage of the motor's coil. The semiconductor integrated circuit controls the driving of the brushless motor by supplying a pseudo sine-wave driving voltage based on the position detection signal and a command signal that prescribes the motor's operation.

Career Highlights

Naoki Oomura is currently employed at Kabushiki Kaisha Toshiba, where he continues to innovate in the field of motor control technology. His work has significantly impacted the efficiency and functionality of motor systems, making him a key figure in the industry.

Collaborations

Oomura has collaborated with notable colleagues such as Atsuyuki Hiruma and Shingo Ikawa. Their combined expertise has contributed to the advancement of motor control technologies and the successful development of innovative solutions.

Conclusion

Naoki Oomura's contributions to motor control technology through his patents and work at Toshiba highlight his role as a leading inventor in this field. His innovative solutions continue to shape the future of motor systems and enhance their performance.