High Frequency Characterization and Modeling via Measurements of Power Electronic Capacitors under High Bias Voltage and Temperature Variations

All types of passive components present variations for most of their electric parameters as a function of several operating conditions (temperature, frequency, voltage). Capacitors, unlike other types of passive components (resistors and coils), are more sensitive to these variations. This paper presents the effects of temperature and bias voltage on power electronic capacitors for frequencies ranging from 10 kHz to 1 GHz. To study these effects, characterization methods and several test benches based on Vector Network Analyzer (VNA) are developed and introduced in this paper. The aim is to be able to predict, by simulation, the frequency behavior of these components under temperature and high bias voltage variations. The range of the applied bias voltage is from 0 Volt up to 1 kVolt and temperature ranging from -40 degrees C up to 140 degrees C. The developed models are then translated to VHDL-AMS languages to facilitate their implementation in various electrical simulators.