Patent ID: 7564147

Claim:
A method of sharing an electrical load in an electrical power distribution system, the method comprising: providing a first AC power source, a second AC power source, a first DC bus, and a second DC bus; connecting the first AC power source to the first DC bus via a first AC to DC rectifier; connecting the second AC power source to the first DC bus via a second AC to DC rectifier; connecting the second AC power source to the second DC bus via the second AC to DC rectifier; extracting DC power simultaneously from the first and the second DC buses to satisfy a total DC load requirement; monitoring an amount of DC power extracted from first and the second DC buses; determining a desired proportion of the total DC load requirement that is to be provided by each of the DC buses; changing a proportion of the total DC load provided from the first DC bus by changing an AC voltage output of the first AC power source relative to an AC voltage output of the second AC power source, to correspondingly change DC voltage on the first DC bus relative to DC voltage on the second DC bus and thereby partially shift power extraction between the first and second AC power sources.