A Review of Current Sensors in Power Electronics: Fundamentals, Measurement Techniques and Components to Measure the Fast Transients of Wide Bandgap Devices

Accurate and reliable measurements of electrical quantities like voltage and current are essential for the power electronic systems’ reliable and efficient operation. Choosing the right current sensor for a specific application is crucial, especially for the fast transients of power semiconductor devices. This paper provides an overview of current sensor principles and the state of the art in current sensor technology for high di/dt and dv/dt measurements of wide bandgap devices.