Method and device for regulating a wind machine
First Claim
1. A method of regulating a system that produces electric power, the system including an electric alternator having a rotor integral with a rotating part of a wind machine to form a rotary assembly, and a power electronics module, the method including the steps of:
- producing an alternating current at output terminals of the alternator and having electrical characteristics, including amperage, voltage, phase difference between current and voltage, and frequency;
converting the alternating current produced by the alternator into modulated pulses of direct current, wherein the electrical characteristics, including amperage, voltage, phase difference between current and voltage, and frequency, of the alternating electric current produced by the alternator are regulated, by controlling the speed of rotation of the rotary assembly by resisting torque imposed by the alternator in response to modulating the pulses of continuous current produced by the converted alternating current;
wherein, when wind speed is higher than a first threshold value, the speed of rotation of the rotary assembly of the wind machine is regulated at a fixed maximum value, or a nominal value, enabling optimum recovery of power by the wind machine.
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Accused Products
Abstract
A method and corresponding apparatus for regulating a system that produces electric power, the system including an electric alternator having a rotor integral with a rotating part of a wind machine to form a rotary assembly, and a power electronics module, the method including the steps of: producing an alternating current at output terminals of the alternator; converting the alternating current produced by the alternator into modulated pulses of direct current. Alternating electric current produced by the alternator is regulated by controlling the speed of rotation of the rotary assembly by resisting torque imposed by the alternator in response to modulating the pulses of continuous current produced by the converted the alternating current.
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Citations
21 Claims
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1. A method of regulating a system that produces electric power, the system including an electric alternator having a rotor integral with a rotating part of a wind machine to form a rotary assembly, and a power electronics module, the method including the steps of:
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producing an alternating current at output terminals of the alternator and having electrical characteristics, including amperage, voltage, phase difference between current and voltage, and frequency; converting the alternating current produced by the alternator into modulated pulses of direct current, wherein the electrical characteristics, including amperage, voltage, phase difference between current and voltage, and frequency, of the alternating electric current produced by the alternator are regulated, by controlling the speed of rotation of the rotary assembly by resisting torque imposed by the alternator in response to modulating the pulses of continuous current produced by the converted alternating current;
wherein, when wind speed is higher than a first threshold value, the speed of rotation of the rotary assembly of the wind machine is regulated at a fixed maximum value, or a nominal value, enabling optimum recovery of power by the wind machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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- 16. A device for regulating an installation for producing electric power comprising an electric alternator having a rotor integral with the rotating part of a wind machine in order to form a rotary assembly, a power electronics module including a means for converting the alternating current produced by the alternator into direct current, and means for measuring the amperage and voltage of the current produced by the alternator and the speed of rotation of the rotary assembly, wherein the means for conversion of the alternating current produced by the alternator into direct current is a pulse width modulating rectifier connected to a digital control and regulating unit regulating the direct current by pulses produced by the pulse width modulating rectifier as a function of the measurement of said amperage and voltage of the current produced by the alternator and said speed of rotation of the rotary assembly.
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21. A method of regulating an installation for producing electric power, the installation having an electric alternator having a rotor integral with a rotating part of a wind machine forming a rotary assembly, and a power electronics module, the method comprising the steps:
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producing an alternating current at the output of an electric alternator and having electrical characteristics, including amperage, voltage, phase difference between current and voltage and frequency; converting the alternating current produced by the alternator into pulses of direct current, wherein the electrical characteristics, including amperage, voltage, phase difference between current and voltage and frequency of the alternating electric current are regulated, the regulation occurring in response to controlling the speed of rotation of the rotary assembly by resisting torque imposed by the alternator by modulating the pulses of continuous current produced by the conversion means of the power electronics module resulting from the alternating electric current produced by the alternator, wherein the maximum speed of rotation of the rotary assembly of the wind machine is regulated at a value permitting disengagement of the blades of the rotating part of the wind machine for a predetermined wind speed, by modulating the pulses of continuous current produced by said conversion means.
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Specification