I-Hsiang Shih

Title: I-Hsiang Shih: Innovator in Power Factor Correction Technology

Introduction

I-Hsiang Shih is a notable inventor based in Taoyuan, Taiwan. He has made significant contributions to the field of electrical engineering, particularly in power factor correction circuits. His innovative approach has led to the development of a unique circuit that enhances the efficiency of electrical systems.

Latest Patents

I-Hsiang Shih holds a patent for a "Totem pole power factor correction circuit and method of operating the same." This invention features a Totem Pole PFC circuit that includes at least one fast-switching leg, a slow-switching leg, and a control unit. The fast-switching legs consist of a fast-switching upper switch and a fast-switching lower switch. The slow-switching leg is coupled in parallel to the fast-switching leg and includes a slow-switching upper switch and a slow-switching lower switch. The control unit is designed to receive an AC voltage with a phase angle and includes a current detection loop, a voltage detection loop, and a control loop. The control loop generates a second control signal assembly to manage the operation of the slow-switching switches, dynamically adjusting their duty cycle based on the phase angle.

Career Highlights

I-Hsiang Shih is currently employed at Delta Electronics, Inc., a leading company in power and thermal management solutions. His work at Delta has allowed him to apply his innovative ideas in practical applications, contributing to the company's reputation for excellence in the electronics industry.

Collaborations

Throughout his career, I-Hsiang Shih has collaborated with talented individuals such as Chun-Hao Huang and Chun-Wei Lin. These collaborations have fostered a creative environment that encourages the exchange of ideas and the development of cutting-edge technologies.

Conclusion

I-Hsiang Shih's contributions to power factor correction technology exemplify his commitment to innovation in electrical engineering. His patent and work at Delta Electronics, Inc. highlight his role as a key player in advancing efficient electrical systems.