Company Filing History:
Years Active: 2020-2025
Title: Innovations by Edward Shi Chen in Protective Circuit Interrupters
Introduction
Edward Shi Chen is a notable inventor based in Camas, WA (US). He has made significant contributions to the field of electrical engineering, particularly in the development of protective circuit interrupters. With a total of five patents to his name, Chen's work focuses on enhancing the safety and reliability of current sensing devices.
Latest Patents
One of Chen's latest patents is titled "Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters." This invention provides a method for passive monitoring of the integrity of current sensing devices and associated circuitry in Ground Fault Circuit Interrupters (GFCI) and Arc Fault Circuit Interrupters (AFCI). The protection circuit interrupter utilizes a capacitively coupled noise signal obtained from an arrangement of line side arms relative to a Rogowski coil. The noise signal is monitored while the line and load sides of the protective circuit interrupter are disconnected. If the noise signal fails to correlate sufficiently with a reference noise cycle, the connection of the line and load sides is disabled. When the line and load sides are connected, the root mean square (RMS) value of the observed current signal is monitored. If this observed current signal does not meet a specified RMS threshold, the line and load sides are disconnected. The observed current signal is adjusted by subtracting the reference noise cycle before monitoring for any fault conditions applicable to the protective device.
Career Highlights
Edward Shi Chen is currently employed at Hubbell Limited, where he continues to innovate and develop advanced electrical safety solutions. His expertise in the field has led to the creation of patents that significantly improve the functionality and safety of electrical devices.
Collaborations
Chen has collaborated with notable colleagues, including Gary Michael Miller and William Vernon Miller, III. These partnerships have contributed to the advancement of technology in protective circuit interrupters.
Conclusion
Edward Shi Chen's contributions to the field of electrical engineering, particularly through his innovative patents, have made a lasting impact on the safety and reliability of protective circuit interrupters. His work continues to influence the industry and enhance electrical safety standards.