Si-hyung Lee

Title: Si-hyung Lee: Innovator in Acoustic Signal Generation

Introduction

Si-hyung Lee is a notable inventor based in Rochester, MI (US). He has made significant contributions to the field of electric machine control through his innovative patent. His work focuses on enhancing the functionality and efficiency of motor drive systems.

Latest Patents

Si-hyung Lee holds a patent for a "Method and apparatus for acoustic signal generation." This invention describes a motor drive system that controls the operation of an electric machine. The system includes an inverter with paired power transistors connected to the electric machine, which is linked to a DC power source via a high-voltage electrical power bus. The motor controller features a first controller and an acoustic signal generator. The first controller manages the paired power transistors of the inverter, determining an initial output voltage based on a torque command. The acoustic signal generator produces a sound injection voltage, which is combined with the initial output voltage to generate PWM commands for controlling the transistors.

Career Highlights

Si-hyung Lee is currently employed at GM Global Technology Operations, Inc. His work at this company has allowed him to develop and refine his innovative ideas in electric machine control. He has a total of 1 patent to his name, showcasing his commitment to advancing technology in this field.

Collaborations

Throughout his career, Si-hyung Lee has collaborated with talented individuals such as Yo Chan Son and Aayush Gupta. These collaborations have contributed to the development of his innovative projects and have fostered a creative environment for technological advancement.

Conclusion

Si-hyung Lee is a dedicated inventor whose work in acoustic signal generation has the potential to revolutionize electric machine control. His innovative patent reflects his expertise and commitment to advancing technology in this field.