Useful lifetime estimation of solder joints in power semiconductors employed in current source and voltage source inverters

Abstract

Purpose The purpose of this paper is to find the optimum inverter type as the solder joint reliability point of view. Design/methodology/approach In this paper, finite element model(ing) simulations supported with power cycling aging experiments were used to demonstrate the best inverter type as the solder joint reliability point of view. Findings It was found that inverter types highly affect the solder joint health during its nominal operating. Originality/value The authors confirm the originality of this paper.

Design and analysis of electric spring based on battery-less current-source inverter

“…It can only operate normally when the DC voltage is greater than the peak voltage of the AC link, so a high-voltage level battery or capacitor is required on the DC link (Bai et al , 2018). Current-source inverters (CSIs), as the duality of VSIs, have the advantages of voltage boosting, large-capacity conversion, direct current control, adjustable power factor and reliable short-circuit protection (Wang et al , 2016; Sener and Ertasgin, 2020; Zou et al , 2021), which can also be used to construct ESs. In addition, inductors have a higher lifetime and stability than capacitors (Wang and Blaabjerg, 2014).…”