Abstract:
An antenna-based modular power system includes a prime power supply configured to generate a first alternating current (AC) power signal having a first AC voltage level. At least one transformer is configured to convert the first AC signal into a second AC signal having a second AC voltage level less than the first AC voltage level. At least one Transmit or Receive Integrated Microwave Module (T/RIMM) dual power converter antenna array is in signal communication with the at least one transformer. The at least one T/RIMM dual power converter antenna array includes at least one load, and an AC/DC converter is embedded therein to convert the second AC signal into a DC power drive signal to energize the at least one load.
Abstract:
A stacked magnetic power converter assembly includes a plurality of converter modules disposed in a stacked arrangement with respect to one another to define a thickness of stacked magnetic power converter assembly. Each converter module includes a primary switching unit, a secondary switching unit, and a converter unit. The converter unit includes a primary terminal in signal communication with the primary switching unit and a secondary terminal in signal communication with the secondary switching unit. Each primary switching unit, each secondary switching unit, and each converter unit is shared among the plurality of converter modules.
Abstract:
A regulated current-fed power system employs power branching units connected in series. Each power branching unit includes a plurality of parallel-redundant converter groups connected in series with each other within a current path for the regulated current. Each parallel-redundant converter group includes at least two direct current (DC)/DC converters connected in parallel with each other, each sharing the power load. A protection device connected in series with each DC/DC converter disconnects the respective DC/DC converter from the regulated current when the respective DC/DC converter short circuits, with the remaining DC/DC converter(s) then receiving more of the power load. An active clamp connected in parallel with all of the DC/DC converters within a parallel-redundant converter group temporarily sinks a portion of the regulated current when one of the DC/DC converters fails in a short-circuit condition. The active clamp shunts the regulated current around all DC/DC converters within the parallel-redundant converter group converters fail in a short-circuit condition.
Abstract:
A magnetic assembly to receive current having a high current and high frequency includes a transformer, at least one resonant inductor, and at least one auxiliary inductor. The resonant inductor is in electrical communication with the transformer, and the auxiliary inductor is in electrical communication with the resonant inductor. The magnetic assembly further includes at least one conductor having a first end coupled to the auxiliary inductor and a second end coupled to the transformer. The conductor extends continuously between the first and second ends without terminating to form an auxiliary winding of the auxiliary inductor, a resonant winding of the resonant inductor, and at least one primary winding of the transformer.
Abstract:
A system includes a power converter configured to convert input power into output power. The power converter includes first and second converter bridges, where each converter bridge includes multiple transistors. The system also includes a zero-voltage switching (ZVS) assistance circuit having first and second inverse controlled rectifiers (ICRs). Each of the first and second ICRs is configured to provide current to the transistors in the first and second converter bridges. The system further includes a controller configured to control operation of the first and second converter bridges and the ZVS assistance circuit. The controller could include a phase-shift modulation (PSM) controller configured to control the converter bridges and a pulse width modulation (PWM) controller configured to control the ZVS assistance circuit. The PWM controller can be configured to apply pre-shaped voltages to transistors in regulators of the ICRs to enable substantially zero-loss turn-off commutation of the transistors in the regulators.
Abstract:
A multi-cell inductive wireless power transfer system includes multiple transmitting elements. Each transmitting element includes one or more transmitting windings and one or more transmitting magnetic cores. The multi-cell inductive wireless power transfer system also includes multiple receiving elements. The transmitting elements are separated from the receiving elements by an air gap. Each receiving element includes one or more receiving windings and one or more receiving magnetic cores.
Abstract:
A power converter assembly is provided and includes high quality factor (Q) shield-to-transistor integrated low-inductance capacitor elements to divert common mode (CM) currents, high Q shield-to-shield integrated low-inductance capacitor elements to compliment line-to-line filter capacitors and high Q baseplate integrated low-inductance capacitor elements to attenuate residual CM currents.
Abstract:
An electrical circuit and a method for regulating current and providing a circuit breaker to the electrical circuit. The circuit includes a bidirectional cell including a set of forward switches for power flow during a forward mode of operation and a set of reverse switches for providing reverse power flow during a reverse mode of operation, a control inductor for controlling current flow during the reverse mode of operation, and a voltage clamping switch configured to provide the control inductor in the circuit during the reverse mode of operation and remove the control inductor from the circuit during the forward mode of operation. The circuit is operated in at least the reverse mode of operation.
Abstract:
A power converter with ground fault protection (PCGFP) circuit includes an input stage, a first voltage converter, and an output stage. The input stage is connected to a power bus to receive an input direct current (DC) voltage. The first voltage converter converts the input DC voltage to a second voltage and switches between an open and closed state to regulate power present on the power bus. The output stage includes a second voltage converter circuit to generate an output voltage having a different voltage level from the input DC voltage. A controller controls operation of the first and second voltage converters and is also capable of detecting a ground fault on the power bus. The controller operates the first and second voltage converts in a fault isolation mode in response to detecting the ground fault such that the first and second voltage converters isolate the ground fault.
Abstract:
A modular high-power converter system includes an electronic power distribution unit configured to output an analog current (AC) voltage to a power bus, and at least one Transmit or Receive Integrated Microwave Module (T/RIMM) that includes a voltage converter unit and a transmitter and receiver (T/R) unit. The voltage converter unit includes at least one analog-to-digital converter (ADC) to convert the AC voltage into a direct current (DC) voltage having a first DC voltage level. The transmitter and receiver (T/R) unit includes a modular-based DC/DC converter to convert the DC voltage into a second DC voltage having a second voltage. The modular-based DC/DC converter includes a modular power converter unit configured to generate the second DC voltage. The modular converter unit is configured to be independently interchangeable with a different modular converter unit.