Yingfeng Ji

Title: Innovations by Inventor Yingfeng Ji

Introduction

Yingfeng Ji is an accomplished inventor based in Northville, Michigan, known for his contributions to the field of electric drive systems. With a total of two patents to his name, he has made significant strides in improving the operation of electric machines, particularly in vehicles.

Latest Patents

Among his latest patents, the first one is titled "Methods and system for estimating electric machine position offset." This patent describes systems and methods for effectively operating an electric drive system used in electric or hybrid vehicles. It emphasizes the utilization of a pulsed torque current command alongside a zero flux current command, forming the basis for the winding current commands within an electric machine.

The second patent focuses on "Method and system for active detection of rotor magnet temperature." In this innovative approach, a controller detects the rotor magnet temperature by analyzing actively detected back electromotive force (BEMF) voltage. This method involves commanding the injection of a direct-axis (d-axis) current into a spinning motor while commanding no torque, thus allowing for accurate detection of the BEMF voltage and, consequently, the rotor magnet temperature.

Career Highlights

Yingfeng Ji is currently employed at Ford Global Technologies, LLC, where he applies his expertise to the development of advanced electric machine technologies. His work plays a crucial role in enhancing the efficiency and performance of electric vehicles, making them more reliable and effective in the marketplace.

Collaborations

Throughout his professional journey, Yingfeng Ji has collaborated with talented coworkers, including Jonathan Hair and Matthew Penne. These collaborative efforts have contributed to the development of innovative solutions and advancements in automotive technologies.

Conclusion

Yingfeng Ji's contributions to the field of electric drive systems highlight the importance of innovation in the automotive sector. His patents and ongoing work at Ford Global Technologies, LLC position him as a significant figure in advancing electric vehicle technology, making a lasting impact on the industry.