Modeling and Transient Simulation of Switching Converters-Based Power Systems: Boost Converter

Efficient and accurate simulation of switching converters-based power systems demands mathematical models capable to reproduce, closely to real components, the systems' dynamics. These mathematical models allow the power engineer to make accurate predictions about how the system will behave in order to analyze power quality issues, e.g., waveform distortion, to design control algorithms to comply with applicable connection codes, to estimate its behavior under distinct conditions, e.g., short circuit analysis, among others. This paper discusses three commonly used modeling techniques for transient simulation of switching converters-based power systems. These are: i) time-domain, ii) averaged-value models, and iii) flexible extended harmonic domain. This paper aims at comparing these techniques from the point of view of: i) effort for model preparation, ii) computational burden, and iii) harmonics and interharmonics visualization (accuracy). A case study involving a DC/DC boost converter is presented for validation purposes.