Accurate Losses Multipoint Non Adiabatic Calorimetric Measurement Technique for WBG Power Converters

Konferenz: PCIM Europe digital days 2020 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.07.2020 - 08.07.2020 in Deutschland

Tagungsband: PCIM Europe digital days 2020

Seiten: 8Sprache: EnglischTyp: PDF

Autoren:
Schiestl, Martin; Incurvati, Maurizio; Staerz, Ronald (Management Center Innsbruck MCI, Austria)
Loesch, Andreas (Alpitronic, Italy)

Inhalt:
Modern power converters show ever increasing efficiency and frequencies, due to the upcoming of soft-switching and resonant schemes. The measurement of the power losses with current methods like the DPT (double-pulse-test) are approaching their limits as lower power losses result in an increase in the measurement error. This paper introduces a novel and simple method to measure the contribution of each lossy component of a circuit to the overall power losses through multipoint temperature measurements. The efficiency of wide-band gap semiconductor power converters can be estimated with an accuracy of approximately 2 %. The proposed technique can be easily applied to any converter topology.