Philip R Cooke

Title: The Innovations of Philip R Cooke

Introduction

Philip R Cooke is a notable inventor based in Nashua, NH (US). He has made significant contributions to the field of electrical engineering, particularly in the development of motor control technologies. With a total of 2 patents, Cooke's work has had a meaningful impact on the industry.

Latest Patents

Cooke's latest patents include an induction motor controller and a power supply controller. The induction motor controller is designed for variable speed three-phase AC squirrel-cage induction motors, utilizing a volts-per-hertz control method. This innovative controller employs direct current (DC) link current to compensate for rotor slip, ensuring optimal performance under varying load conditions. The controller allows for complete control over the induction motor through a direction input and speed reference command.

The second patent, a power supply controller, implements frequency foldback and volt-second duty cycle clamp features. This controller charges an oscillator timing capacitor with a fixed current and discharges it under specific conditions to manage the power supply operating frequency during short circuit or overload fault situations. The volt-second duty cycle clamp circuit limits the duty cycle to a maximum value, independent of capacitor tolerance, enhancing the reliability of the power supply.

Career Highlights

Philip R Cooke is associated with Unitrode Corporation, where he has contributed to various innovative projects. His expertise in motor control and power supply technologies has positioned him as a key figure in his field.

Collaborations

Cooke has worked alongside John R Wiggenhorn, collaborating on projects that leverage their combined expertise in electrical engineering.

Conclusion

Philip R Cooke's contributions to the field of electrical engineering through his patents and work at Unitrode Corporation highlight his innovative spirit and dedication to advancing technology. His inventions continue to influence the industry and pave the way for future developments.