Within the field of power converter design, the use of optimisation techniques is a popular method to ensure that the best possible design is achieved for a given objective, e.g. weight or volume reduction. However, there is currently a lack of efficient unified frameworks for optimising the system level design of converters in terms of the device, heatsink and passive component selection. This paper presents an efficient unified design optimisation framework that can be applied to a wide range of power converter design problems. The main advantage of the proposed framework is that it produces optimal solutions with great computational efficiency. The proposed framework was validated by applying to SiC-based converter design problems, achieving power densities of 8.32 kW/kg for a 50-kW DC-DC converter, and 3.50 kW/L for a 5-kW 3-phase DC-AC converter.
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