Efficient and scalable power control in multi-port active-bridge converters

Abstract

Application of multi-port active-bridge converters is constantly increasing due to their advantages such as bidirectional power transfer, high efficiency, and intrinsic electrical isolation. However, controlling the flow of power in these converters becomes more and more complex as the number of ports increases. Power flow in a multi-port active-bridge converter is controlled through phase shifts and duty cycles. Analytical and Numerical methods, when suitable, often require huge amounts of processing and memory resources for real-time control of the power in converters with three or more ports. This work proposes a method that is computational cost efficient and can be employed for realtime control purposes. It is scalable and can be applied to any number of ports. Simulation and experimental results are provided to validate correct operation of the proposed method.