For an Induction Machine with Saturation, a JSON file is required to define the saturation characteristics of the machine. The file must contain the following information:
Parameter (JSON key) | Symbol | Data Type | Units | Description | Example | |||||
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NoLoadStatorCurrent | IRMS | double[] | Arms | One dimensional array of root-mean-square stator current values measured under no-load test conditions. This array must be the same size as NoLoadLineToLineVoltage. All its values must be greater than zero and strictly increasing. |
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NoLoadLineToLineVoltage | VLL,RMS | double[] | Vrms | One dimensional array of root-mean-square, line-to-line voltage values measured under no-load test conditions. This array must be the same size as NoLoadStatorCurrent, and its values must be strictly increasing. |
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NoLoadFrequency | f | double | Hertz | Frequency used during the no-load test. |
This value cannot be zero. |
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NominalStatorLeakageInductance | Lls | double | Henry | Nominal value of the stator leakage inductance calculated using the locked-rotor test. If this value is zero, the resulting magnetizing inductance is calculated ignoring the voltage drop in the stator leakage inductance. |
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For additional details about the locked-rotor test and the no-load test, please refer to the IEEE Standard Test Procedure for Polyphase Induction Motors and Generators (IEEE-112).
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The following constraints apply to the parameters defined in the file. If the current and voltage measurements are not compatible with the nominal parameters, an error will be thrown.
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An example Magnetizing Inductance File in JSON format is available here:
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| Note |
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This file is intended for use as a template only; it does not contain valid simulation data. |
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