David C Lewis

Title: The Innovative Contributions of David C. Lewis

Introduction

David C. Lewis is a notable inventor based in Hermosa Beach, California. He has made significant contributions to the field of electrical engineering, particularly in power supply systems. With a total of five patents to his name, Lewis has demonstrated a commitment to innovation and technological advancement.

Latest Patents

Among his latest patents is an "Autonomous system and method for redundancy management of multiple power supplies." This system includes an output terminal that couples to an electrical load and a plurality of power supplies arranged in parallel. Each power supply is equipped with a controller that monitors the power output of both upstream and downstream power supplies. The controller maintains a standby state when the downstream power supply's output is below a certain threshold and transitions to a voltage regulation state when the output exceeds that threshold. This innovative approach ensures efficient power management and redundancy.

Another significant patent is the "Three level neutral point clamped converter with improved voltage balancing." This NPC converter is controlled by estimating current flow during short vector periods of a space vector modulation drive signal. The current estimation is utilized to close a first-order inner current regulator loop, which directs current to either the upper or lower capacitor of a DC link. An outer voltage regulator measures voltage imbalance across the capacitors, driving the inner current loop to maintain balance. This invention enhances the performance and reliability of power conversion systems.

Career Highlights

David C. Lewis has worked with prominent companies such as Raytheon Company and Honeywell Power Systems, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas in the field of electrical engineering.

Collaborations

Throughout his career, Lewis has collaborated with talented individuals, including Colin E. Huggett and Jonathan M. Lewis. These collaborations have contributed to the development of his patents and innovations.

Conclusion

David C. Lewis is a distinguished inventor whose work in power supply systems has made a lasting impact on the field of electrical engineering. His innovative patents reflect his dedication to advancing technology and improving efficiency in power management.