Abstract: A method of starting a power system including an inverter having a plurality of DC feeds, wherein the DC feeds include a first DC feed and a number of additional DC feeds. The method includes connecting the first DC feed to a DC link of the inverter, synchronizing the inverter to an AC grid, and connecting the synchronized inverter to the AC grid. The method also includes, for each of the additional DC feeds, responsive to determining: (i) that a predetermined time period based on a required power ramp rate of the inverter has elapsed, and (ii) that current operating conditions of the inverter are within a safe operating area of a plurality of switching devices of the inverter, connecting the additional DC feed to the DC link.

Abstract: A method of providing wireless power transfer can include receiving multi-phase power at a transmitter portion of a multi-phase wireless power transfer system that is associated with an electrical equipment rack that is configured to house a plurality of electrical components and wirelessly transferring the multi-phase power from the transmitter portion to a receiver portion of the multi-phase wireless power transfer system at a power level that is configured to operate the plurality of electrical components.

Abstract: A wireless power transmitter for wirelessly transmitting a power for powering a load includes a direct-current to alternating-current (DC/AC) converter coupled to a direct-current (DC) power source. The wireless power transmitter further includes a resonant network coupled to an output of the DC/AC converter. The wireless power transmitter also includes an output estimation module coupled to the DC power source. The output estimation module estimates a power characteristic of a load to generate an estimated power characteristic of the load. The load is configured to be powered based on a transmitted power that is wirelessly transmitted by the wireless power transmitter. The wireless power transmitter further includes a control system coupled to the DC/AC converter. The control system controls the DC/AC converter to control an amount of the transmitted power based on the estimated power characteristic of the load.

Abstract: A system includes an AC input port configured to be coupled to an AC power source, a first AC/DC converter circuit having a first port coupled to the AC input port, and a first resonant circuit coupled to the first port of the first AC/DC converter circuit. The system further includes a second resonant circuit inductively coupled to the first resonant circuit, a second AC/DC converter circuit coupled to the second resonant circuit and a control circuit configured to control the first AC/DC converter circuit responsive to an output of the second AC/DC converter circuit.

Abstract: A method of providing wireless power transfer can include receiving multi-phase power at a transmitter portion of a multi-phase wireless power transfer system that is associated with an electrical equipment rack that is configured to house a plurality of electrical components and wirelessly transferring the multi-phase power from the transmitter portion to a receiver portion of the multi-phase wireless power transfer system at a power level that is configured to operate the plurality of electrical components.

Abstract: A system includes an AC input port configured to be coupled to an AC power source, a first AC/DC converter circuit having a first port coupled to the AC input port, and a first resonant circuit coupled to the first port of the first AC/DC converter circuit. The system further includes a second resonant circuit inductively coupled to the first resonant circuit, a second AC/DC converter circuit coupled to the second resonant circuit and a control circuit configured to control the first AC/DC converter circuit responsive to an output of the second AC/DC converter circuit.