Abstract: A dual inverter open winding machine for a vehicle. The machine may include an electric motor, a first energy source, a first inverter, a second energy source, and a second inverter. The first inverter may include a plurality of first switches independently operable between an opened position and a closed position to selectively connect and disconnect a first direct current (DC) port and a first alternating current (AC) port with one or more of the first energy source, the first inverter, and the motor. The second inverter may include a plurality of second switches independently operable between an opened position and a closed position to selectively connect and disconnect a second DC port and a second AC port with one or more of the second energy source, the second inverter, and the motor.

Abstract: A system includes a conversion device of a charging station, the conversion device connected to a first energy source of the charging station, and a controller configured to perform an impedance measurement applied to an energy storage system, the energy storage system selected from at least one of a second energy source of the charging station and a battery system of a vehicle. The controller is configured to cause the first energy source to generate a first excitation signal for measuring a first energy source impedance, control the conversion device to adjust a parameter of the first excitation signal to convert the first excitation signal to a converted excitation signal, apply the converted excitation signal to the energy storage system, detect a current response of the energy storage system, and estimate the impedance of the energy storage system based on the current response.

Abstract: A system includes a body comprising a conduction path, and first and second modules disposed along, and movable relative to, the body, each of the first and second modules including an energy storage device, a terminal, and a power management unit coupling the energy storage device and the terminal. The terminal of each of the first and second modules is capacitively coupled with the conduction path for bidirectional power transfer between the first and second modules via the conduction path.

Abstract: A dual inverter open winding machine for a vehicle. The machine may include an electric motor, a first energy source, a first inverter, a second energy source, and a second inverter. The first inverter may include a plurality of first switches independently operable between an opened position and a closed position to selectively connect and disconnect a first direct current (DC) port and a first alternating current (AC) port with one or more of the first energy source, the first inverter, and the motor. The second inverter may include a plurality of second switches independently operable between an opened position and a closed position to selectively connect and disconnect a second DC port and a second AC port with one or more of the second energy source, the second inverter, and the motor.

Abstract: A pre-charge system for a DC electric power system includes a high-voltage electric power bus that electrically connects to an external bus. A contactor includes a first switch arranged to control electric power through the positive bus link, and a second switch arranged to control electric power through the negative bus link. A pre-charge resistor is arranged in parallel with the first switch. A controller is operatively connected to the first and second switches, and in communication with a voltage sensor. The controller includes an instruction set to activate the second switch, periodically monitor the electrical potential, determine a time-rate of change in the electrical potential, and close the first switch when the time-rate of change in the electrical potential is less than a first threshold.

Abstract: A system for transferring DC electric power to a DC electric power system includes an electric power source, a DC-DC power converter, a system power bus including a capacitor, a first current sensor, a second current sensor, a third current sensor, and a controller. The DC-DC power converter includes a switched inductance circuit including an inductor, a high-voltage switch, and a diode. The second current sensor monitors a second current in the system power bus between the DC-DC power converter and the capacitor. The controller determines a parametric setpoint for the system power bus, determines the first current, the second current, and the third current in the system power bus, and controls the switching DC-DC power converter based upon the parametric setpoint, the first current, the second current, and the third current.

Abstract: A device configured for wireless power transfer includes a digital controller configured to generate a plurality of switch control signals, and a transceiver configured to generate a wireless signal for the wireless power transfer. The transceiver includes a plurality of switches, each switch of the plurality of switches being responsive to a respective switch control signal of the plurality of switch control signals such that the wireless signal has a waveform shaped in accordance with a code sequence for the wireless power transfer. The code sequence is one of a set of predetermined code sequences, each predetermined code sequence being orthogonal to each other predetermined code sequence of the set of predetermined code sequences.

Abstract: A system includes a body comprising a conduction path, and first and second modules disposed along, and movable relative to, the body, each of the first and second modules including an energy storage device, a terminal, and a power management unit coupling the energy storage device and the terminal. The terminal of each of the first and second modules is capacitively coupled with the conduction path for bidirectional power transfer between the first and second modules via the conduction path.

Abstract: A receiver for wireless power transfer includes a plurality of passive elements including a coupling element configured to capture an incoming spread spectrum signal, an active switch coupled to the plurality of passive elements, and a controller to generate a control signal for the active switch. The control signal changes a state of the active switch to vary a resonance condition established by the plurality of passive elements.

Abstract: A device configured for wireless power transfer includes a digital controller configured to generate a plurality of switch control signals, and a transceiver configured to generate a wireless signal for the wireless power transfer. The transceiver includes a plurality of switches, each switch of the plurality of switches being responsive to a respective switch control signal of the plurality of switch control signals such that the wireless signal has a waveform shaped in accordance with a code sequence for the wireless power transfer. The code sequence is one of a set of predetermined code sequences, each predetermined code sequence being orthogonal to each other predetermined code sequence of the set of predetermined code sequences.

Abstract: A receiver for wireless power transfer includes a plurality of passive elements including a coupling element configured to capture an incoming spread spectrum signal, an active switch coupled to the plurality of passive elements, and a controller to generate a control signal for the active switch. The control signal changes a state of the active switch to vary a resonance condition established by the plurality of passive elements.