Donald S Kimmel

Title: The Innovations of Donald S. Kimmel

Introduction

Donald S. Kimmel is a notable inventor based in Monroeville, PA (US). He has made significant contributions to the field of electrical engineering, particularly in the protection of synchronous machines. With a total of 6 patents to his name, Kimmel's work has had a lasting impact on the industry.

Latest Patents

Kimmel's latest patents include a "Thermal protection apparatus for a synchronous machine." This invention protects synchronous machines from excessive field current and volts/hertz ratios through a sophisticated control system. The system models rotor and stator cooling, providing memory of recent excessive heating periods. It features maximum excitation limiting and volts/hertz ratio limiting modules within a microprocessor-based automatic voltage regulator. These modules generate time-delayed limit signals that override voltage feedback control when parameters exceed threshold values. The limiters increment a count when thresholds are exceeded and generate limit signals when a predetermined count is reached. The counts are decremented at a rate that models rotor and stator cooling when parameters return below threshold values.

Another significant patent is the "Apparatus protecting a synchronous machine from under excitation." This invention includes a limiter as part of a microprocessor-based voltage regulator. The limiter characterizes limiting parameters such as system stability and machine capability as straight line segments in the real/reactive power plane. This provides versatile and easily modified limits on excitation.

Career Highlights

Kimmel is currently employed at Westinghouse Electric Corporation, where he continues to innovate and develop technologies that enhance the performance and reliability of electrical systems. His work has been instrumental in advancing the field of synchronous machine protection.

Collaborations

Kimmel has collaborated with notable colleagues such as Wardell Gary and Glenn R. Taylor. Their combined expertise has contributed to the successful development of various technologies in the electrical engineering sector.

Conclusion

Donald S. Kimmel's contributions to the field of electrical engineering, particularly in the protection of synchronous machines, highlight his innovative spirit and dedication to advancing technology. His patents reflect a deep understanding of complex electrical systems and a commitment to improving their reliability and efficiency.