Abstract:A method for reducing the capacitor size used in single phase floating capacitor voltage source converter modules is presented. A Transformer Coupled Asymmetrical half-Bridge (TCAB) is used to exchange energy between the capacitor regulated dc sources of the main power converter modules, without using separate power sources. This energy exchange (bidirectional) compensates for naturally occurring low frequency voltage ripple in the floating capacitor main power converters. This enables smaller film dc capacito… Show more
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