John J Culligan

Title: John J Culligan: Innovator in Motor Control Systems

Introduction

John J Culligan is a notable inventor based in Alpharetta, GA (US). He has made significant contributions to the field of motor control systems, particularly in the area of ground fault protection. His innovative approach has led to the development of a patented technology that enhances the safety and reliability of motor operations.

Latest Patents

John J Culligan holds a patent for a "Method and apparatus for sensing a ground fault in a motor control system." This invention provides a motor control unit designed to protect motors against ground fault currents. The unit effectively monitors the currents in each phase of the motor, offering values that represent each phase current. Additionally, it includes a contactor for opening and closing each phase, which is controlled based on the monitored phase currents. The contactor is automatically opened when a ground fault situation is detected at the motor, ensuring enhanced safety.

Career Highlights

Culligan is currently employed at Siemens Energy & Automation, Inc., where he continues to work on innovative solutions in motor control technology. His expertise and dedication to improving motor safety have made him a valuable asset to the company.

Collaborations

Some of his notable coworkers include James T Cronvich and Samir F Farag, who contribute to the collaborative environment at Siemens Energy & Automation, Inc. Their combined efforts foster innovation and drive advancements in motor control systems.

Conclusion

John J Culligan's contributions to motor control technology exemplify the impact of innovation in enhancing safety and efficiency. His patented methods continue to influence the industry, showcasing the importance of protecting motors from ground fault currents.