METHOD AND APPARATUS FOR CONTROLLING A CONVERTER
First Claim
1. A method for controlling a converter connected to an electrical machine comprising a shunt protection circuit installed between the electrical machine and an inverter, the method comprising:
- detecting an abnormal operation of the electrical machine or a system connected to the electrical machine;
deactivating the inverter and activating the shunt protection circuit simultaneously in response to the detected abnormal operation;
activating the inverter in response to a second condition occurring after the abnormal operation; and
deactivating the shunt protection circuit after activating the inverter.
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Accused Products
Abstract
An apparatus and method of controlling an electrical generating apparatus is provided. The apparatus includes an electrical generator configured to be connected to an electrical grid and a converter comprising an inverter connected to a rotor of the electrical generator. The apparatus also includes a shunt protection circuit connected to the inverter and the rotor of the electrical generator and a control unit configured to activate and deactivate the inverter and the shunt protection circuit. The control unit is configured to, in response to determining that an abnormal condition is occurring in the electrical generator or an electrical grid to which the electrical generator is connected, deactivate the inverter and activate the shunt protection circuit. Also, after it is determined that the abnormal condition has passed, the control unit is configured to activate the inverter before deactivating the shunt protection circuit.
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Citations
13 Claims
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1. A method for controlling a converter connected to an electrical machine comprising a shunt protection circuit installed between the electrical machine and an inverter, the method comprising:
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detecting an abnormal operation of the electrical machine or a system connected to the electrical machine; deactivating the inverter and activating the shunt protection circuit simultaneously in response to the detected abnormal operation; activating the inverter in response to a second condition occurring after the abnormal operation; and deactivating the shunt protection circuit after activating the inverter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electrical generating apparatus, the apparatus comprising:
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an electrical generator configured to be connected to an electrical grid; a converter comprising an inverter connected to a rotor of the electrical generator; a shunt protection circuit connected to the inverter and the rotor of the electrical generator; and a control unit configured to activate and deactivate the inverter and the shunt protection circuit, wherein the control unit is configured to, in response to determining that an abnormal condition is occurring in the electrical generator or an electrical grid to which the electrical generator is connected, deactivate the inverter and activate the shunt protection circuit, wherein after it is determined that the abnormal condition has passed, the control unit is configured to activate the inverter before deactivating the shunt protection circuit. - View Dependent Claims (10, 11, 12, 13)
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Specification