Method and apparatus for providing power conversion using an interleaved flyback converter with reactive power control

A method for converting power with reactive power control comprising:

• determining a desired power factor (PF);
• driving a plurality of flyback circuits during a first period to generate a forward power flow based on the desired PF;
• and
• driving a reactive power control circuit during a second period to generate a reverse power flow via one flyback circuit of the plurality of flyback circuits, wherein the reactive power control circuit is coupled (i) across the secondary winding of the one flyback circuit of the plurality of flyback circuits, and (ii) across an output of a DC-AC inversion circuit coupled to the plurality of flyback circuits.

A system for converting power with reactive power control comprising:

• a plurality of photovoltaic (PV) modules;
• a plurality of power converters coupled in a one-to-one correspondence with the plurality of PV modules, wherein each power converter comprises:
• a plurality of flyback circuits, coupled in parallel;
• a DC-AC inversion circuit coupled across an output of each flyback circuit of the plurality of flyback circuits;
• a reactive power control circuit coupled (i) across the secondary winding of one flyback circuit of the plurality of flyback circuits, and (ii) across an output of the DC-AC inversion circuit;
• and
• a controller operative to coordinate timing of switches in each flyback circuit of the plurality of flyback circuits and the reactive power control circuit to generate AC output power of a desired power factor.