Tomofumi Okamoto

Title: Tomofumi Okamoto: Vehicle Wireless Power and Motor Control Patents

Introduction

Tomofumi Okamoto is an inventor based in Tokyo, Japan, whose work includes vehicle technologies related to wireless power transfer and traction-motor control. He is associated with Subaru Corporation and is listed as an inventor on 2 patents.

Latest Patents

Okamoto’s listed patents address wireless power supply for vehicles and the interaction between power-transfer systems and motor diagnostics.

“Wireless power supply systems for a vehicle” describes a vehicle with a traction motor, a diagnostic module, a wireless power receiving coil, and a controller. When the receiving coil is positioned relative to a ground-based supplying coil, the controller switches the diagnostic module to a state less likely to identify an error than its normal state. This adjustment is intended to account for conditions associated with wireless charging while the module tests the traction motor’s rotational position sensor.

“Wireless power supply for vehicle” concerns control of a traction motor equipped with a rotational position sensor. Its drive controller can switch between sensing control, which uses the sensor’s detection results, and sensing-less control, which operates without those results. The patent describes a flexible approach to controlling motor current under different sensing conditions.

Career Highlights

The available information associates Okamoto’s patent work with Subaru Corporation. His listed inventions focus on vehicle systems that combine wireless power supply with traction-motor diagnostics and control.

Collaborations

Takuya Horie and Fumiyuki Moriya are identified as Okamoto’s coworkers. The supplied information does not specify their roles in the listed patents.

Conclusion

Tomofumi Okamoto’s listed patents highlight engineering approaches to wireless vehicle charging and traction-motor control, reflecting his work associated with Subaru Corporation.