Jih-Sheng Lai

Title: Jih-Sheng Lai: A Pioneer in Hybrid Modulation Control Technologies

Introduction

Jih-Sheng Lai, based in Blacksburg, VA, is a prominent inventor known for his contributions to electrical engineering. With a total of 28 patents to his name, Lai has significantly impacted the field of power electronics and inverter technology.

Latest Patents

Among his latest innovations are two noteworthy patents:

1. **Hybrid Modulation Controlled DC-to-AC Converters** - This patent details aspects of hybrid modulation control for DC-to-AC converters. The innovation involves generating a hybrid modulation pattern that separates switch gating control into multiple regions for a half-cycle of the waveform. One control region utilizes a specific modulation technique while another applies a different approach. This method enhances the performance of the resonant converter by effectively controlling the switches according to the hybrid modulation pattern.

2. **Hybrid Multi-Level Inverter** - This disclosure focuses on systems and methods for multi-level inverters. It describes a hybrid binary cascaded multilevel inverter (BCMLI) that consists of several H-bridge cells arranged in a cascaded formation. The H-bridge cells are powered by a combination of DC voltage sources and capacitors, allowing the inverter to output an AC voltage through well-coordinated switching instances. The use of floating capacitor voltage controllers ensures that the charge levels across the capacitors are maintained optimally.

Career Highlights

Throughout his career, Jih-Sheng Lai has collaborated with significant organizations such as Virginia Tech Intellectual Properties, Inc. and the Electric Power Research Institute. His work in these institutions has allowed him to further develop innovative technologies that benefit the field of electrical power systems.

Collaborations

Lai has also collaborated with notable individuals in his field, including skilled coworkers Fang Zheng Peng and Arshad Mansoor. These partnerships have likely enhanced his research capabilities and contributed to the successful development of his patented technologies.

Conclusion

Jih-Sheng Lai's contributions to hybrid modulation control technologies and multi-level inverters demonstrate his innovative spirit and expertise in electrical engineering. With numerous patents and collaborative efforts, he continues to make strides in enhancing the efficiency and functionality of power electronic systems. His work not only signifies personal achievement but also contributes greatly to the advancements in this vital industrial sector.