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 transformer includes a closed loop core having a first leg and a second leg. The transformer also includes a first primary winding surrounding the first and second legs, a second primary winding surrounding the first and second legs, and first and second secondary windings surrounding the first and second legs, respectively, and disposed between the first and second primary windings. A first turn of the first and second secondary windings are disposed on a first interlayer winding layer, and other turns of the first and second secondary windings are disposed on a first layer that is further from the first primary winding than the first interlayer winding layer.

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 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 computer-implemented method includes measuring, by a first local controller connected to a first converter, one or more characteristics of the first converter. The first converter belongs to a set of two or more converters in a power system configured to power equipment, and each of the two or more converters is connected to a respective local controller. An arc fault is detected based at least in part on the one or more characteristics of the first converter, and an indication of the arc fault is communicated to the central controller. The arc fault is remediated by performing one or more remedial operations determined by at least one of the first local controller and the central controller.

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: 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: 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: An adaptive stability control system includes a direct current (DC) bus and one or more distributed controllers. The DC bus is configured to provide bidirectional pulsed power flow and energy storage. The distributed controller is configured to continuously measure an impedance of the DC bus and execute at least one adaptive control algorithm to regulate impedance of the DC bus to maintain stability of the bidirectional pulsed power flow and energy storage.

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 computer-implemented method includes measuring, by a first local controller connected to a first converter, one or more characteristics of the first converter. The first converter belongs to a set of two or more converters in a power system configured to power equipment, and each of the two or more converters is connected to a respective local controller. An arc fault is detected based at least in part on the one or more characteristics of the first converter, and an indication of the arc fault is communicated to the central controller. The arc fault is remediated by performing one or more remedial operations determined by at least one of the first local controller and the central controller.

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 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.

Abstract: A transformer includes a closed loop core having a first leg and a second leg. The transformer also includes a first primary winding surrounding the first and second legs, a second primary winding surrounding the first and second legs, and first and second secondary windings surrounding the first and second legs, respectively, and disposed between the first and second primary windings. A first turn of the first and second secondary windings are disposed on a first interlayer winding layer, and other turns of the first and second secondary windings are disposed on a first layer that is further from the first primary winding than the first interlayer winding layer.

Abstract: A transformer includes a closed loop core having a first leg and a second leg. A first primary winding surrounds the first leg and a second primary winding surrounds the second leg. A first secondary winding surrounds the first leg and a second secondary winding surrounds the second leg. The first primary winding causes a magnetic flux to flow in the first leg in a first direction and the second primary winding causes the magnetic flux to flow in the second leg in a second direction that is opposite from the first direction.

Abstract: A power converter includes an outer housing formed of dielectric material and including a low voltage compartment and a high voltage compartment is disclosed. The power converter also includes a low voltage DC-to-AC converter disposed in the low voltage compartment, a first coil in the low voltage compartment, a first conductive shield element lining an outer wall of the low voltage compartment, the first conductive shield element being electrically coupled to an electrical input of the DC-to-AC converter and a second conductive shield element lining an outer wall of the high voltage compartment.

Abstract: An inductive wireless power transfer device includes a primary winding assembly and a secondary winding assembly separated from the primary winding assembly by a distance. A first magnetic core cap is on the primary winding assembly and a second magnetic core cap is on the secondary winding assembly so as to magnetically couple together the primary winding assembly and the secondary winding assembly. A multi-section high voltage (HV) isolator is interposed between the primary winding assembly and the secondary winding assembly. The multi-section HV isolator includes at least one individual insulator section comprising a dielectric material, and at least one intermediate magnetic core comprising a ferrite material interposed between the primary winding assembly and the secondary winding assembly.

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: A crowbar circuit includes a first inductor coupled to a positive terminal of a power supply at a first terminal, and at a second terminal coupled in series with a main thyristor having a main gate drive for limiting a discharge current through main thyristor; a resistor coupled to the main thyristor at a first terminal and to the negative terminal at a second terminal; an auxiliary thyristor having an auxiliary gate drive coupled in series with a first capacitor at a first terminal and an auxiliary inductor at a second terminal, the auxiliary inductor coupled between the first terminal of the resistor and the first capacitor; a first diode couple between the first terminal of the resistor and the first terminal of the auxiliary thyristor; and a second diode coupled between the positive terminal and the negative terminal.

Abstract: An inductive wireless power transfer device includes a primary winding assembly and a secondary winding assembly separated from the primary winding assembly by a distance. A first magnetic core cap is on the primary winding assembly and a second magnetic core cap is on the secondary winding assembly so as to magnetically couple together the primary winding assembly and the secondary winding assembly. A multi-section high voltage (HV) isolator is interposed between the primary winding assembly and the secondary winding assembly. The multi-section HV isolator includes at least one individual insulator section comprising a dielectric material, and at least one intermediate magnetic core comprising a ferrite material interposed between the primary winding assembly and the secondary winding assembly.