Hledat
Zobrazují se záznamy 1-5 z 5
Measurement of DC Currents in the Power Grid by Current Transformer
(IEEE, 2013)
DC currents in power grids are mainly caused by geomagnetic activity especially during magnetic storms. It is desirable to monitor
these currents to prevent saturation of transformers, which may cause blackout. However, ...
AC/DC Current Transformer With Single Winding
(IEEE, 2014)
AC/DC Current Transformer With Single Winding is a device which allows simultaneously measure AC and DC current using fluxgate effect
DC-Compensated Current Transformer
(Molecular Diversity Preservation International, 2016)
Instrument current transformers (CTs) measure AC currents. The DC component in the measured current can saturate the transformer and cause gross error. We use fluxgate detection and digital feedback compensation of the DC ...
Demagnetization of Current Transformers Using PWM Burden
(IEEE, 2015)
Current transformers (CTs) show large errors when they are magnetized by dc current. This error can be reduced after proper demagnetization. One of the methods to demagnetize the CT is to increase the core flux by increasing ...
A Fluxgate Current Sensor With an Amphitheater Busbar
(IEEE, 2016)
Large dc and ac electric currents are often measured by open-loop sensors without a magnetic yoke. A widely used configuration
uses a differential magnetic sensor inserted into a hole in a flat busbar. The use of a ...