Automatic Layout Design and Implementation for Three Phase Voltage Source Converters

The converter level automatic layout is challenging because multiple types of components need to adhere to different placement rules. This paper proposes an implementation method for computers to automatically layout three three-phase voltage source converters. The proposed method utilizes a hierarchical tree to establish layout rules and prioritize components. The layout optimization process involves employing simulated annealing (SA) based heuristic optimization for the phase leg and applying specialized algorithms for different component groups. The layout of the phase leg is optimized for a minimum switching loop inductance. The layout of other components is solved as a floor plan problem or by directly following the design rules defined in the hierarchical tree. The whole converter layout can be visualized, and the switching node capacitance can be extracted. These parasitics enable more accurate switching performance evaluation for the design tool applications. Moreover, the proposed layout design can be easily extended to other types of converters.