An apparatus comprising a signal transformer coupled to a power line and a signal transmission, reception, or detection circuit. A sensor is configured to be responsive to the power line current or magnetic flux generated in a ferrite core of the signal transformer. When the sensor indicates that the flux generated by the power line current mat cause an attenuation of the signal strength, a second circuit generates a current through a flux cancelling winding that cancels at least some of the flux generated by the power line current.

An electrical power conversion device produces more DC power (wattage) from a lesser amount of AC power. The device utilizes an AC motor that is powered by 120 VAC. The motor drives two (2) permanent magnet alternators (PMA) which produce AC power. This AC power is then rectified by two (2) rectifier modules into DC power. The rectifiers are mounted on a heat sink plate with cooling pegs. The device is mounted in a large metal enclosure complete with disconnect switches, power meters and cooling fans.

An electrical power conversion device produces more DC power (wattage) from a lesser amount of AC power. The device utilizes an AC motor that is powered by 120 VAC. The motor drives two (2) permanent magnet alternators (PMA) which produce AC power. This AC power is then rectified by two (2) rectifier modules into DC power. The rectifiers are mounted on a heat sink plate with cooling pegs. The device is mounted in a large metal enclosure complete with disconnect switches, power meters and cooling fans.

An example converter for a switched reluctance (SR) generator includes one or more gate driver circuits that are not only used to synchronously control switches, such as insulated gate bipolar transistors (IGBTs) of the converter, but also used to provide priming function during start-up of the generator. Since, an SR generator does not have to ability to self provide magnetic flux, priming current is provided to coils of the SR generator to initiate a magnetic flux. By using the gate drive circuit to provide the priming current, an additional priming circuit is not required. As a result, the converter design is more streamlined, with reduced complexity, cost, and size. When a bus voltage of the converter is below a threshold level, the one or more gate drive circuits can provide the priming current on the bus to initiate the SR generator.

An example converter for a switched reluctance (SR) generator includes one or more gate driver circuits that are not only used to synchronously control switches, such as insulated gate bipolar transistors (IGBTs) of the converter, but also used to provide priming function during start-up of the generator. Since, an SR generator does not have to ability to self provide magnetic flux, priming current is provided to coils of the SR generator to initiate a magnetic flux. By using the gate drive circuit to provide the priming current, an additional priming circuit is not required. As a result, the converter design is more streamlined, with reduced complexity, cost, and size. When a bus voltage of the converter is below a threshold level, the one or more gate drive circuits can provide the priming current on the bus to initiate the SR generator.

Provided are embodiments for a power generation system. The system includes a generator comprising a first set of stator windings and a second set of stator windings; a first rectifier coupled to an output of the first set of stator windings; a second rectifier coupled to an output of the second set of stator windings; and an electrical connection coupling an output of the first rectifier and an output of the second rectifier, wherein the electrical connection is used to provide a DC supply to a load. Also provided are embodiments for a method for operating the power generation system.

Provided are embodiments for a power generation system. The system includes a generator comprising a first set of stator windings and a second set of stator windings; a first rectifier coupled to an output of the first set of stator windings; a second rectifier coupled to an output of the second set of stator windings; and an electrical connection coupling an output of the first rectifier and an output of the second rectifier, wherein the electrical connection is used to provide a DC supply to a load. Also provided are embodiments for a method for operating the power generation system.

An exciter drive circuit comprises a direct current (DC) link to provide a positive DC voltage to a positive voltage exciter rail and a negative DC voltage to a negative voltage exciter rail. An exciter winding includes a first exciter terminal connected to the positive voltage exciter rail and an opposing second exciter terminal connected to the negative voltage exciter rail. A flyback circuit establishes a first flyback current path that conducts the current from exciter winding in response to an inductive flyback event. A flyback fault protection circuit establishes a second flyback current path that conducts the current from exciter winding in response to the inductive flyback event and a fault present in the flyback circuit. The second flyback current path delivers the current output by the exciter winding from the negative voltage exciter rail to the positive voltage exciter rail.

An exciter drive circuit comprises a direct current (DC) link to provide a positive DC voltage to a positive voltage exciter rail and a negative DC voltage to a negative voltage exciter rail. An exciter winding includes a first exciter terminal connected to the positive voltage exciter rail and an opposing second exciter terminal connected to the negative voltage exciter rail. A flyback circuit establishes a first flyback current path that conducts the current from exciter winding in response to an inductive flyback event. A flyback fault protection circuit establishes a second flyback current path that conducts the current from exciter winding in response to the inductive flyback event and a fault present in the flyback circuit. The second flyback current path delivers the current output by the exciter winding from the negative voltage exciter rail to the positive voltage exciter rail.

The system and method described herein provide grid-forming control of a power generating asset having a generator, such as a double-fed generator, connected to a power grid. Accordingly, a stator-frequency error is determined for the generator. The components of the stator frequency error are identified as a damping component corresponding to a tower damping frequency and a stator component. Based on the stator component, a power output requirement for the generator is determined. This power output requirement is combined with the damping power command to develop a consolidated power requirement for the generator. Based on the consolidated power requirement, at least one control command for the generator is determined and an operating state of the generator is altered.