List of Losses in Squirrel cage motors
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VSD Controlled 5-50Hz
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VSD Controlled >50Hz
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No Load Losses
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Magnetising (iron) Losses
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Hysteresis Losses
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Same
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(Slightly increased)
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Eddy Current Losses
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Same
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(Slightly increased)
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Ventilation Losses
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Losses in Fan and rotating parts
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Decreased
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Increased
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Friction Losses
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Losses in Bearings
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Decreased
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Increased
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Load Losses
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Joule (copper) Losses in Stator
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Caused by current passing through winding
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Increased
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Increased
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Joule Losses in Rotor
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Caused by current passing rotor cage
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Increased
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Increased
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Stray Losses
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Used to be added as 0.5% of overall losses
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