High-resolution Phally-windowed Sensors for Power Electronics Applicationsysic

• Main Authors: Wichakool, Warit (Contributor), Paris, James (Contributor), Avestruz, Al-Thaddeus (Contributor), Leeb, Steven B. (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science (Contributor)
• Format: Article
• Language: English
• Published: Institute of Electrical and Electronics Engineers, 2010-10-27T16:50:03Z.
• Subjects: Article
• Online Access: Get fulltext

This paper presents a high-resolution, physically-windowed sensor architecture that is well-suited for energy scorekeeping and diagnostic applications. The sensor can track a large-scale main signal while capturing small-scale variations. The prototype system measures a small current signal using a closed-loop Hall sensor, and extends the range by driving a compensation current through an auxiliary winding. The system combines the compensation command and the sampled output of the residual sensor to reconstruct the input signal. Results show that the prototype can measure both dc and ac currents with 10 mA resolution over a 160 A current range.
Grainger Foundation
BP-MIT Research Alliance
United States. Advanced Research Projects Agency-Energy
United States. Advanced Research Projects Agency-Energy
Massachusetts Institute of Technology. Sea Grant College Program
Landsman, Manny, Dr.