Patent ID: 7095138

Claim:
A controller for combining and summing two AC power sources, comprising: a first connector having a first phase terminal and a second phase terminal, said first connector adapted for communication with a first externally located incoming AC power source; a second connector having a first phase terminal and a second phase terminal, said second connector adapted for communication with a second externally located incoming AC power source, said second incoming AC power source independent of said first incoming AC power source; a first contact having a terminal, said first contact terminal in communication with the second phase terminal of said first connector; a second contact having a terminal, said second contact terminal in communication with the first phase terminal of said first connector; a third contact having a terminal, said third contact terminal in communication with the first phase terminal of said second connector; a fourth contact having a terminal, said fourth contact terminal in communication with the second phase terminal of said second connector; and means for comparing a phase and amplitude of said first externally located incoming AC power source with a phase and amplitude of said second externally located incoming AC power source without any conversion of said first externally located incoming AC power source or said second externally located incoming AC power source; means for opening and closing said first contact, said second contact, said third contact and said fourth contact based on information received from said means for comparing; wherein said first contact, said second contact, said third contact and said fourth contact are closed when the phase and amplitude of said first incoming AC power source is the same as the phase and amplitude of said second incoming AC power source; wherein upon closing of said first contact, said second contact, said third contact and said fourth contact by said means for closing, unconverted currents flowing through said first contact and said fourth contact are summed at a first summing terminal and unconverted currents flowing through said second contact and said third contact are summed at a second summing terminal.