Hisham Alnajjar

Title: Hisham Alnajjar: Innovator in Fault Detection Technology

Introduction

Hisham Alnajjar is a notable inventor based in New Britain, Connecticut. He has made significant contributions to the field of fault detection technology, particularly in transformer systems. His innovative approach has led to the development of a unique method for identifying partial discharge faults in transformer tanks.

Latest Patents

Hisham Alnajjar holds a patent for a "Method and apparatus for fault detection." This invention focuses on determining partial discharge faults in transformer tanks by sensing supersonic vibrations at multiple points around the tanks. The process involves establishing a threshold amplitude and frequency range for pulse vibrations to be evaluated. The signals from various points are multiplexed, synchronized, and localized, followed by a series of processing steps. The method includes conducting a wavelet transform on the multiplexed signals to provide both frequency and time domain analysis. This innovative approach allows for accurate estimates of the time delays for triggering pulse vibrations, ultimately determining the position of the partial discharge fault.

Career Highlights

Hisham Alnajjar is affiliated with the University of Hartford, where he continues to contribute to research and development in his field. His work has garnered attention for its practical applications in improving the reliability and safety of transformer systems.

Collaborations

Hisham collaborates with Hemchandra Madhusudan Shertukde, enhancing the research and development efforts in fault detection technologies.

Conclusion

Hisham Alnajjar's innovative work in fault detection technology exemplifies the importance of advancements in electrical engineering. His contributions not only improve transformer safety but also pave the way for future innovations in the field.