Method and arrangement in inverter
First Claim
1. A method in connection with an inverter that comprises several power semiconductor components and a control apparatus to control them, the control apparatus being arranged to control the power semiconductor components in response to a control quantity to generate an output voltage, the method comprising the step of:
- determining the temperature or an electric quantity affecting the temperature of one or more power semiconductor components,determining the change of the temperature or an electric quantity affecting the temperature of one or more power semiconductor components, andcontrolling with the control apparatus the power semiconductor components in response to both a control quantity to generate an output voltage and the change rate of the temperature or a quantity affecting the temperature of the power semiconductor components to reduce temperature variation by slowing down a temperature increase rate as the temperature or the electric quantity affecting the temperature increases and by slowing down a temperature decrease rate as the temperature or the electric quantity affecting the temperature decreases.
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Accused Products
Abstract
A method and arrangement in connection with an inverter that comprises several power semiconductor components and a control apparatus arranged to control them is disclosed. The method comprises the steps of determining the temperature or an electric quantity affecting the temperature of one or more power semiconductor components, determining the change of the temperature or an electric quantity affecting the temperature of one or more power semiconductor components, and controlling with the control apparatus the power semiconductor components in response to both a control quantity to generate an output voltage and the change rate of the temperature or a quantity affecting the temperature of the power semiconductor components to reduce temperature variation by slowing down the temperature increase rate as the temperature or quantity affecting the temperature increases and by slowing down the temperature decrease rate as the temperature or quantity affecting the temperature decreases.
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Citations
10 Claims
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1. A method in connection with an inverter that comprises several power semiconductor components and a control apparatus to control them, the control apparatus being arranged to control the power semiconductor components in response to a control quantity to generate an output voltage, the method comprising the step of:
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determining the temperature or an electric quantity affecting the temperature of one or more power semiconductor components, determining the change of the temperature or an electric quantity affecting the temperature of one or more power semiconductor components, and controlling with the control apparatus the power semiconductor components in response to both a control quantity to generate an output voltage and the change rate of the temperature or a quantity affecting the temperature of the power semiconductor components to reduce temperature variation by slowing down a temperature increase rate as the temperature or the electric quantity affecting the temperature increases and by slowing down a temperature decrease rate as the temperature or the electric quantity affecting the temperature decreases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An arrangement in connection with an inverter that comprises several power semiconductor components and a control apparatus arranged to control them, the control apparatus being arranged to control the power semiconductor components in response to a control quantity to generate an output voltage, the arrangement comprising:
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means for determining the temperature or an electric quantity affecting the temperature of one or more power semiconductor components, means for determining the temperature or an electric quantity affecting the temperature of one or more power semiconductor components, and a control apparatus for controlling the power semiconductor components in response to both the control quantity to generate an output voltage and the temperature or a quantity affecting the temperature or the power semiconductor components to reduce temperature variation by slowing down a temperature increase rate as the temperature or the electric quantity affecting the temperature increases and by slowing down a temperature decrease rate as the temperature or the electric quantity affecting the temperature decreases. - View Dependent Claims (10)
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Specification