David Dahl

Title: David Dahl - Innovator in Ground Fault Protection Technology

Introduction

David Dahl is an accomplished inventor based in Cedarburg, Wisconsin. He has made significant contributions to the field of motor drive systems, particularly in identifying ground faults. His innovative approach has led to the development of a unique patent that enhances the safety and reliability of electrical systems.

Latest Patents

David Dahl holds a patent for a method and apparatus titled "High resistance ground protection employing AC drive characteristics." This invention provides a method for identifying a ground fault in a motor drive system that includes at least one three-phase power conditioner linked to three-phase supply lines and positive and negative DC buses. The method involves controlling the power conditioner at an operating frequency to convert power while applying a common mode signal on each of the three-phase supply lines. This common mode signal has a frequency different from the operating frequency. By sensing the common mode signal on at least one of the three-phase supply lines, the system can indicate when a ground fault has occurred if the common mode signal exceeds a threshold level.

Career Highlights

David Dahl is currently employed at Rockwell Automation Technologies Incorporated, where he continues to innovate and develop advanced technologies. His work focuses on improving the safety and efficiency of motor drive systems, making significant strides in the industry.

Collaborations

Throughout his career, David has collaborated with notable colleagues, including Nickolay N Guskov and Russel J Kerkman. These partnerships have contributed to the advancement of technology in their field.

Conclusion

David Dahl's contributions to ground fault protection technology exemplify his commitment to innovation and safety in electrical systems. His patent reflects a significant advancement in the industry, showcasing his expertise and dedication to improving motor drive systems.