Title :
DC current sensor for PWM converters
Author :
Kelley, Arthur W. ; Titus, John E.
Author_Institution :
Dept. of Electr. & Comput. Eng, North Carolina State Univ., Raleigh, NC, USA
Abstract :
A sensor for inductor current in PWM converters which offers improved performance over presently available sensors is presented. The sensor is based on a saturable transformer, derives power from existing converter waveforms, provides DC isolation, and has inherently wide bandwidth. The sensor is compared to available current sensors. A theory of operation for the sensor is presented, the results of a sensor trial demonstration are reported, and sensor limitations and additional potential applications are discussed
Keywords :
electric current measurement; electric sensing devices; power convertors; pulse width modulation; DC current sensor; DC isolation; PWM converters; inductor current; inherently wide bandwidth; saturable transformer; Bandwidth; Current measurement; DC-DC power converters; Inductors; Magnetic sensors; Pulse width modulation converters; Sensor phenomena and characterization; Switches; Temperature distribution; Temperature sensors;
Conference_Titel :
Power Electronics Specialists Conference, 1991. PESC '91 Record., 22nd Annual IEEE
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-0090-4
DOI :
10.1109/PESC.1991.162743
