Prediction and Optimization of Near Magnetic Field Produced by Interconnections of Multi-cell Converters

Abstract:
This paper consists on developing a generic modeling routine for the prediction and optimization of the near magnetic radiated emission produced by Differential Mode Current (DMC) in the interconnections of multi-cell converters, more precisely Power Converter Arrays (PCAs) in 2D. The PCAs are based on associations of Dual Active Bridges (DAB) Conversion Standard Cells (CSC) for low and medium power applications. They are built, assembled and interconnected based on PCB technologies. An algorithm based on Biot-Savart law and the physical and electrical configurations of a PCA is provided to develop generic models. Then, a comparison between the proposed algorithm and experimental results of a setup mimicking the equivalent loops are presented with two different measurement technologies, validating the theoretical results qualitatively and quantitatively. The methodology can be applied to spatially characterize the emitted near field produced from CSC’s interconnections and to develop rules and guidance to minimize it.