Louis N Hannett

Title: Louis N Hannett: Innovator in Power Systems Stabilization

Introduction

Louis N Hannett is a notable inventor based in Hudson, NY (US). He has made significant contributions to the field of power systems stabilization, particularly through his innovative patent. His work has implications for enhancing the reliability and efficiency of synchronous machines.

Latest Patents

Hannett holds a patent for a "System for stabilizing synchronous machines." This invention is a microprocessor-based power systems stabilizer that operates through excitation control. It derives all necessary stabilizing information from sampled values of voltage and current taken from potential and current transformers. The instantaneous values of terminal voltage and current are processed using algorithms in the accelerating power signal digital processor portion of the microprocessor. This process develops a value of instantaneous internal voltage, the value of slip frequency of such voltages in relation to rated frequency, and a digitally filtered value of electrical power. The accelerating power is calculated from the rate of change of slip and electrical power. The values of accelerating power are processed with digital algorithms in a stabilizing signal compute section of the microprocessor to yield a stabilizing signal. This signal provides the desired modulating action for damping the machine oscillations of the synchronous generator. The modulating action is achieved by switching the taps in an autotransformer supplied from the potential transformer secondary measuring generator terminal voltage and feeding the voltage regulator and exciter for the generator. The selection of taps on the autotransformer is controlled by the microprocessor-based stabilizer system at an appropriate rate, such as every one to ten milliseconds.

Career Highlights

Hannett is associated with Power Technologies, Inc., where he has applied his expertise in power systems. His innovative approach has led to advancements in the stability and performance of synchronous machines.

Collaborations

Throughout his career, Hannett has collaborated with notable colleagues, including F Paul De Mello and David W Parkinson. These collaborations have contributed to the development and refinement of his inventions.

Conclusion

Louis N Hannett's contributions to power systems stabilization through his innovative patent demonstrate his significant role in advancing technology in this field. His work continues to influence the efficiency and reliability of synchronous machines.