Generalized Approach for Small Signal Modelling & Loss Analysis in 3-Phase PFC Vienna Rectifiers

In this paper a generalized approach for small signal modelling and loss analysis in 3-phase PFC Vienna rectifiers is presented. For this purpose, a detailed study of the converter operation mechanisms is achieved allowing the calculation of the feedback loop gains; based on which compensation circuits design and stability assessment can be performed. After that, it is shown that the same results led to a loss analysis, needed in the selection process of the semi-conductor components and their disposition.