DC-Compensated Current Transformer

DC-Compensated Current Transformer

Blog Article

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 PEPPERMINT TOOTHPASTE digital feedback compensation of the DC flux to suppress the overall error to 0.

15%.This concept can be used not only for high-end CTs with a nanocrystalline core, but it also works for low-cost CTs with FeSi cores.The method described here allows simultaneous measurements of the DC Day Cream current component.