A Retrofit 60 Hz Current Sensor for Power Monitoring at the Circuit Breaker Panel
Author(s)Cooley, John J.; Vickery, Daniel R.; Avestruz, Al-Thaddeus; Clifford, Zachary; Leeb, Steven B.
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Improved signal conditioning electronics and new experimental results are presented for a sensor that measures current flow in a circuit breaker. A PIC microcontroller optimizes the phase reference for the synchronous detection system on startup eliminating the need for I/Q demodulation. Ultimately, the parts count of the signal conditioning electronics is halved compared to the previous work. Experimental results are presented demonstrating the sensor's response to 60 Hz signals with higher harmonic content and to step transients in 60 Hz signal amplitudes. The proposed current sensor does not require permanent modification of the breaker panel or the circuit breaker itself. The intent of this work is to develop a low-cost, non-intrusive, retrofit sensor for centralized power monitoring at the circuit breaker.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Proceedings of the IEEE 12th Workshop on Control and Modeling for Power Electronics (COMPEL), 2010
Institute of Electrical and Electronics Engineers (IEEE)
Cooley, John J. et al. “A Retrofit 60 Hz Current Sensor for Power Monitoring at the Circuit Breaker Panel.” Proceedings of the IEEE 12th Workshop on Control and Modeling for Power Electronics (COMPEL), 2010. 1–7.
Final published version