Bidirectional Three-Level DC-DC Converters: Sum-Difference ...

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Bidirectional Three-Level DC-DC Converters: Sum-Difference modeling and ControlMichael Eull and Matthias PreindlDepartment of Electrical Engineering, Columbia University in the City of New This paper proposes a modeling and control ap-proach for the Three-Level DC-DC converter . The converter isdescribed in a sum and difference ( ) framework. It is shownthat the formulation is useful to model the inverter and derivedesign-specific equations. The component is responsible for theinductor current, the power flow, and the component isused to balance (or unbalance) the DC-link capacitor is shown that there are cross-coupling terms between the and axes that can be compensated. The proposed model isvalidated using high fidelity simulations with a proportional-integral controller. Two- and Three-Level converter operation isshown and it is proven that the passive components can bereduced by50%to75%using Three-Level operation withoutaffecting the control performance.

Bidirectional Three-Level DC-DC Converters: Sum-Difference Modeling and Control Michael Eull and Matthias Preindl Department of Electrical Engineering, Columbia University in the City of New York

  Converter, Modeling, Differences, Bidirectional, Dc converter, Sum difference modeling and