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US 12,368,399 B2Granted
Synchronous inverter
AssigneeDiscovery Energy, LLC
InventorsIsaac S. Frampton, Adam Larson
Life of this patent
Estimating the term…
Abstract
An apparatus includes a first inverter circuit and a second inverter circuit. The first invertor circuit is configured to couple an alternator and a load device to deliver a driving signal from the alternator to the load device. The second invertor circuit is configured to couple the alternator to the load device to deliver a driving signal from the alternator to the load device and configured to couple a battery to the alternator to deliver a charging signal from the alternator to the battery.
Claims14
An apparatus comprising:
- a controlled field alternator configured to generate a polyphase signal in response to a field current control signal provided to the controlled field alternator;
- a plurality of switches connected between the polyphase signal of the controlled field alternator and an output filter;
- a sensing circuit configured to determine a measured value of at least one of:
- a voltage, or a current of the output filter;
- and
- a controller configured to:
- determine a difference between the measured value and a target output value of the output filter;
- determine a change value based on the difference;
- provide a control signal for the plurality of switches based on the change value;
- and
- calculate a plurality of combinations of available voltages through different settings for the plurality of switches,
- wherein the control signal for the plurality of switches includes at least one of the plurality of combinations, and
- wherein one of the plurality of combinations is for starting an engine coupled to the controlled field alternator by a reverse flow through a converter including the plurality of switches.
10 more elements
A method comprising:
- generating a polyphase signal at a controlled field alternator;
- determining, via a sensing circuit, a measured value of at least one of:
- a voltage, or a current of an output filter;
- determining, via a controller, a difference between the measured value and a target output value of the output filter;
- determining, via the controller, a change value based on the difference;
- determining, by the controller, an individual output control signal for each of a plurality of switches connected between the polyphase signal of the controlled field alternator and the output filter, wherein the individual output control signal is based on the change value;
- determining a field current control signal to control a field current of the controlled field alternator;
- and
- calculating a plurality of combinations of available voltages through different settings for the plurality of switches,
- wherein the control signal for the plurality of switches includes at least one of the plurality of combinations, and
- wherein one of the plurality of combinations is for starting an engine coupled to the controlled field alternator by a reverse flow through a converter including the plurality of switches.
8 more elements
A method comprising:
- generating a polyphase signal at a controlled field alternator coupled to an engine configured to operate at a fixed speed;
- determining, via a sensing circuit, a measured value of at least one of:
- a voltage, or a current of an output filter;
- determining, via a controller, a difference between the measured value and a target output value of the output filter;
- determining, via the controller, a change value based on the difference;
- determining, by the controller, an individual output control signal to control each of a plurality of switches connected between the polyphase signal of the controlled field alternator and the output filter, wherein the individual output control signal is based on the change value;
- determining a field current control signal to control a field current of the controlled field alternator;
- and
- calculating a plurality of combinations of available voltages through different settings for the plurality of switches,
- wherein the control signal for the plurality of switches includes at least one of the plurality of combinations, and
- wherein one of the plurality of combinations is for starting the engine coupled to the controlled field alternator by a reverse flow through a converter including the plurality of switches.
8 more elements
Dependencies are inferred from the claim text.