Abstract:
This article proposes a multi-input multi-output digital control strategy for a bidirectional interleaved boost converter with coupled inductors, designed to operate as a...Show MoreMetadata
Abstract:
This article proposes a multi-input multi-output digital control strategy for a bidirectional interleaved boost converter with coupled inductors, designed to operate as an interface between an ultracapacitor and a high-voltage dc-bus in a hybrid nanogrid. The control strategy keeps the high-voltage side dc-bus of the nanogrid stable when the voltage at the low-voltage side, connected to the ultracapacitor, changes in a wide range. Bidirectional energy flow control with current protection is allowed too. The high-voltage regulation loop is closed around an inner, low-voltage side current control loop. In parallel to these, a third, clamp voltage regulator is set to keep tight control over switch voltage stress. This article discusses the controller organization, the design criteria, and shows the subsequent implementation on a general purpose digital control platform. The achievable performance is experimentally verified on a 1.5-kW converter prototype.
Published in: IEEE Transactions on Industrial Electronics ( Volume: 69, Issue: 5, May 2022)