Joshua David Collins

Title: Innovations of Joshua David Collins

Introduction

Joshua David Collins is an accomplished inventor based in Urbana, MO (US). He has made significant contributions to the field of variable frequency drives, showcasing his expertise through his innovative patent.

Latest Patents

Collins holds a patent for a "System for operating a three-phase variable frequency drive from an unbalanced three-phase or single-phase AC source." This invention involves a variable frequency motor drive that includes a converter with a rectifier, which connects to an AC power source and converts the AC power to DC power. The system features a DC bus connected to the rectifier circuit, with at least one bus capacitor across the DC bus. An inverter receives DC power from the DC bus and converts it to AC power to drive a motor. A controller is operatively connected to the converter, which includes a speed control that regulates the inverter based on a speed command to maintain the desired motor speed. Additionally, a speed foldback control measures DC bus ripple voltage and adjusts the speed command accordingly.

Career Highlights

Collins is currently employed at Yaskawa America, Inc., where he continues to develop and refine technologies related to motor drives. His work has been instrumental in advancing the efficiency and performance of variable frequency drives.

Collaborations

Collins has collaborated with notable colleagues, including Mahesh M Swamy and Anupama Balakrishnan, contributing to various projects and innovations within the company.

Conclusion

Joshua David Collins is a notable inventor whose work in variable frequency drives has made a significant impact in the field. His innovative patent and contributions at Yaskawa America, Inc. highlight his dedication to advancing technology.