Comparative Evaluation of Current Sensors for High-Power SiC Converter Applications

An evaluation procedure for comparative analysis of various current sensor technologies is proposed in which performance parameters such as latency and resolution are measured under realistic conditions for a high-power SiC converter. Testing techniques are developed to allow fair comparison between dissimilar sensor types. Experimental data is given for an open-loop Hall Effect sensor and two types of shunt-based sensors utilizing Delta-Sigma modulators.