POWER CONVERTERS INCLUDING LLC CONVERTERS AND METHODS OF CONTROLLING THE SAME

摘要

Photovoltaic (PV) power converters including an LLC converter stage are described. A PV power converter includes a LLC converter stage and a controller. The LLC converter stage includes an input for receiving a direct current (DC) power input from a PV module, a first transformer having a primary winding and a secondary winding and defining a DC side and an alternating current (AC) side of the PV power converter, a plurality of switches on the DC side of the first transformer, and an output coupled to the secondary winding of the first transformer to provide a DC power output. The plurality of switches is coupled between the primary winding of the first transformer and the input. The controller is located on the AC side of the PV power converter. The controller is operatively connected to the plurality of switches and configured to control operation of the plurality of switches.

主权项

1. A photovoltaic (PV) power converter comprising:
an LLC converter stage comprising:
an input for receiving a direct current (DC) power input from a PV module;a transformer having a primary input winding and a secondary output winding defining a primary side and an output side of the PV power converter;a plurality of switches on the primary side of the converter, the plurality of switches coupled between the primary winding of the transformer and the input; andan output coupled to the secondary winding of the transformer through a plurality of diodes to provide a DC power output; and a controller located on the output side of the PV power converter, the controller operatively connected to the plurality of switches and configured to control operation of the plurality of switches.