Intelligent Active Balancing of Parallel/Series-connected Power Devices

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The intelligent balancing of the parallel connected power devices is explored considering the wide band gap power devices. Parallel connected SiC devices are controlled using the gate delay and gate compensation control with appropriate resolution that is capable of minimizing the unbalanced current.Further, a hybrid switch ooncept is proposed and implemented considering a chopper circuit for the improved ruggedness and switching performance of the GaN and SiC switches. A parallel hybrid GaN and SiC switch with intelligent switching control technique using single gate driver solution, is demonstrated with improved system performance.