DC-Compensated Current Transformer

DC-Compensated Current Transformer

Blog Article

Instrument current transformers (CTs) measure AC currents.The hydrangea red sensation 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 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 royal nomadic 5413 rug described here allows simultaneous measurements of the DC current component.