Power converter systems and methods that can combine multiple direct-current (DC) power sources with an independent alternating-current (AC) power source coupled across a load, thereby allowing power to be transferred between the DC power sources, the independent AC power source, and/or the load. The power converter systems and methods offer increased versatility and functionality over traditional power converter systems and devices.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made under Department of Energy Contract No. DE-FC36-03NT41838. The Federal Government has certain rights to this invention.