METHOD AND APPARATUS FOR OPERATING ELECTRICAL MACHINES
First Claim
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1. A method for operating an electrical machine, said method comprising:
- coupling the electrical machine to an electric power system such that the electric power system is configured to transmit at least one phase of electric power to and from the electrical machine; and
configuring the electrical machine such that the electrical machine remains electrically connected to the electric power system during and subsequent to a voltage amplitude of the electric power system operating outside of a predetermined range for an undetermined period of time.
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Abstract
A method for operating an electrical machine includes coupling the electrical machine to an electric power system such that the electric power system is configured to transmit at least one phase of electric power to and from the electrical machine. The method also includes configuring the electrical machine such that the electrical machine remains electrically connected to the electric power system during and subsequent to a voltage amplitude of the electric power system operating outside of a predetermined range for an undetermined period of time.
40 Citations
20 Claims
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1. A method for operating an electrical machine, said method comprising:
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coupling the electrical machine to an electric power system such that the electric power system is configured to transmit at least one phase of electric power to and from the electrical machine; and configuring the electrical machine such that the electrical machine remains electrically connected to the electric power system during and subsequent to a voltage amplitude of the electric power system operating outside of a predetermined range for an undetermined period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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- 8. A control system for an electrical machine, the electrical machine configured to be electrically coupled to an electric power system, wherein the electric power system is configured to transmit at least one phase of electric power to and from the electrical machine, said control system facilitates the electrical machine remaining electrically connected to the electric power system during and subsequent to at least one voltage amplitude of the electric power operating outside of a predetermined range for an undetermined period of time.
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15. A wind turbine comprising:
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at least one electric power generator configured to be electrically coupled to an electric power system, wherein the electric power system is configured to transmit at least one phase of electric power to and from said generator; and at least one control system configured to be electrically coupled to the electric power system, said control system facilitates the electrical machine remaining electrically connected to the electric power system during and subsequent to at least one voltage amplitude of the electric power operating outside of a predetermined range for an undetermined period of time.
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16. A wind turbine in accordance with claim 16 comprising at least one algorithm configured to adjust at least one of the following as a function of at least one voltage amplitude of the electric power:
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at least one gain constant numerical value; at least one maximum limit numerical value; and at least one minimum limit numerical value. - View Dependent Claims (17)
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18. A wind turbine in accordance with claim 18 wherein said PI filter scheme comprises:
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at least one proportional gain algorithm configured to receive at least one proportional gain constant selected from a plurality of proportional gain constants as a function of at least one voltage amplitude of the electric power, said proportional gain algorithm further configured to generate a proportional gain signal; at least one integral gain algorithm configured to receive at least one integral gain constant selected from a plurality of integral gain constants as a function of at least one voltage amplitude of the electric power, said integral gain algorithm further configured to generate an integral gain signal; at least one integral filter algorithm configured to receive at least one integral filter limit selected from a plurality of integral filter limits as a function of at least one voltage amplitude of the electric power, said integral filter algorithm further configured to generate a filtered integral signal; at least one summation algorithm configured to receive and sum said proportional gain and filtered integral signals and generate a summation signal; and at least one summation filter algorithm configured to receive at least one summation filter limit selected from a plurality of summation filter limits as a function of at least one voltage amplitude of the electric power. - View Dependent Claims (19, 20)
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Specification