Method and system for load sharing among multiple DC generators
AssigneeGE Aviation Systems LLC
InventorsJinhui Zhang, Slobodan Gataric
Life of this patent
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Abstract
There is provided a system for use with a set of generators. The system includes a processor and a memory including instructions that, when executed by the processor, cause the processor to perform certain operations. The operations can include receiving a command and receiving a signal indicative of a current of at least one generator in the set of generators. The operations can further include causing, based on the command and the signal, a controller to adjust a voltage level of at least one other generator in the set of generators.
Claims20
A system for controlling a plurality of generators electrically connected together to produce a collective power, the system comprising:
- a load sharing controller comprising:
- a summing device for combining actual currents respectively output from the plurality of generators to produce a total current;
- a plurality of computational blocks, each corresponding to one of the plurality of generators and including first and second stage processors;
- wherein the first stage processor is configured to receive the total current, and receive an input share command, the input share command being (i) associated with a corresponding generator and (ii) representative of a fractional portion of the collective power;
- and output a respective desired current value;
- and
- wherein the second stage processor compares the respective desired current value with its respective actual current value and produces a corresponding current command;
- and
- a plurality of feedback devices respectively corresponding to the plurality of computational blocks;
- each configured to receive its corresponding current command and output a corresponding adjustment signal.
A system, comprising:
- a plurality of generators connected in parallel, the plurality of generators including a first generator and one or more additional generators;
- and
- a load sharing controller comprising:
- a summing device for combining actual currents respectively output from the plurality of generators to produce a total current;
- a plurality of computational blocks, each corresponding to one of the plurality of generators and including first and second stage processors;
- wherein the first stage processor is configured to receive the total current, and receive an input share command, the input share command being (i) associated with a corresponding generator and (ii) representative of a fractional portion of a collective power;
- and output a respective desired current value;
- and
- wherein the second stage processor compares the respective desired current value with its respective actual current value and produces a corresponding current command;
- and
- a plurality of feedback devices respectively corresponding to the plurality of computational blocks;
- each configured to receive its corresponding current command error signal and output a corresponding adjustment signal.
A method for load sharing between a plurality of generators, the method comprising:
- providing a load sharing controller comprising:
- a summing device for combining actual currents respectively output from the plurality of generators to produce a total current;
- a plurality of computational blocks, each corresponding to one of the plurality of generators and including first and second stage processors;
- wherein the first stage processor is configured to receive the total current, and receive an input share command, the input share command being (i) associated with a corresponding generator and (ii) representative of a fractional portion of a collective power;
- and output a respective desired current value;
- and
- wherein the second stage processor compares the respective desired current value with its respective actual current value and produces a corresponding current command;
- and
- a plurality of feedback devices respectively corresponding to the plurality of computational blocks;
- each configured to receive its corresponding current command and output a corresponding adjustment signal.
Dependencies are inferred from the claim text.