Temperature Controller
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Abstract
A charge controller of a high temperature battery for a power compensator of an electric power transmission line. The charge controller includes a sensor and a processor including a memory module. The charge controller includes a virtual battery model of the battery.
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Citations
25 Claims
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1-12. -12. (canceled)
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13. A charge controller of a high temperature battery for a power compensator of an electric transmission line, wherein the high temperature battery comprises a high energy, high temperature sodium/metal chloride battery, the charge controller comprising:
a module for estimating a state of charge of the battery, the module comprising a virtual battery model and an estimation module, wherein the estimation module chooses a plurality of parallel current values, wherein each current value deviates a small amount from a measured current value, calculates from the parallel current values corresponding voltage values with a virtual battery model, compares the corresponding voltage values with an actual measured voltage value, chooses a current value resulting in a closest estimation of the actual measured voltage value as an actual current value, and estimates the state of charge of the battery by integrating the actual current value. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A power compensator for an electric power transmission line, comprising:
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a voltage source converter; an energy storage device comprising a voltage battery comprising a short circuit failure mode in which in case of an interior failure of the energy storage device the electric circuit will be kept closed; and a charge controller comprising a module for estimating a state of charge of the battery, the module comprising a virtual battery model and an estimation module, wherein the estimation module chooses a plurality of parallel current values, wherein each current value deviates a small amount from a measured current value, calculates from the parallel current values corresponding voltage values with a virtual battery model, compares the corresponding voltage values with an actual measured voltage value, chooses a current value resulting in a closest estimation of the actual measured voltage value as an actual current value, and estimates the state of charge of the battery by integrating the actual current value - View Dependent Claims (21)
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22. A method for estimating a state of charge of a high temperature battery comprising a high energy, high temperature sodium/metal chloride battery for a power compensator of an electric power transmission line, the method comprising:
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selecting a plurality of parallel current values each deviating from a measured current value; calculating from the parallel current values corresponding voltage values with a virtual battery model; comparing corresponding voltage values with an actual measured voltage value; selecting a current value resulting in a closest estimation of an actual measured voltage value as an actual current value; and estimating a state of charge of the battery by integrating an actual current value.
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23. A computer program product, comprising:
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a computer readable medium; and computer program instructions recorded in the computer readable medium and executable by a processor for carrying out a method for estimating a state of charge of a high temperature battery comprising a high energy, high temperature sodium/metal chloride battery for a power compensator of an electric power transmission line, the method comprising selecting a plurality of parallel current values each deviating from a measured current value, calculating from the parallel current values corresponding voltage values with a virtual battery model, comparing corresponding voltage values with an actual measured voltage value, selecting a current value resulting in a closest estimation of an actual measured voltage value as an actual current value, and estimating a state of charge of the battery by integrating an actual current value. - View Dependent Claims (24, 25)
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Specification