Bidirectional Power Converter

A bidirectional power converter comprising:

• a number of flyback converter units connected in parallel, each converter unit having a controller and being adapted to accumulate power from a primary side during an ON time of the unit and to deliver the accumulated power to a secondary side during an OFF time, the primary and secondary sides being interchangeable in accordance with the direction of power conversion, each controller being configured to operate at a boundary between a discontinuous conduction mode and a continuous conduction mode and to perform valley switching when switching from OFF to ON,
• wherein one of the converter units is configured to operate as a master wherein the controller associated therewith is adapted to control the length of the ON time in order to feedback-control an overall current output of the converter, and
• wherein each of the other converter units is configured to operate as a slave wherein the controller of each of the other converter units is adapted to control the length of the ON time in order to feedback-control a phase delay of the ON time of the slave relative to the ON time of another one of the converter units.