Analysis of Soft-Switching Performance for a DC-DC Dual Active Bridge Converter with Randomly Varying Loads


This study describes a framework for analyzing the dynamic behavior of power electronic converters with randomly varying loads and sources. A continuous-time load process and dynamic converter model are combined as a stochastic hybrid system (SHS) model. The SHS model enables straightforward calculation of dynamic state moments, which may be used to assess the probability of desirable operating conditions. Zero voltage switching (ZVS) in a dual active bridge (DAB) converter is considered as a case study. The probability that ZVS conditions are satisfied is assessed in two ways. First, an approximation is obtained from first and second moments. Second, a lower bound on the probability of ZVS is determined from Cantelli's inequality.

Meeting Name

2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 (2018: Sep. 23-27, Portland, OR)


Electrical and Computer Engineering

Research Center/Lab(s)

Intelligent Systems Center

Keywords and Phrases

Continuous time systems; Electric inverters; Energy conversion; Hybrid systems; Probability; Solar buildings; Stochastic models; Stochastic systems; Zero voltage switching; Continuous-time; Dual active bridge converter; Dual active bridges; Dynamic behaviors; Dynamic converters; Operating condition; Power electronic converters; Stochastic hybrid systems; DC-DC converters; Stochastic hybrid system

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version


File Type





© 2018 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Dec 2018