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Definitions (40)
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Phase voltage
Voltage across the phase winding.
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Advance angle
In a brushless DC (BLDC) machine, the advance angle defines the timing of the current commutation in relation to the rotor position.
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Airgap diameter
Diameter from the middle of the airgap to the middle of the airgap on the opposite side
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Airgap thickness
Distance between the rotor surface and stator surface
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Average conductor length
Average length of a conductor including the length of the end-winding.
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Coil span
The coil span is the distance between one conductor of a certain phase and the corresponding return conductor.
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Concentrated winding
In Emetor, a winding is called concentrated winding when the number of slots per pole per phase is fractional and strictly lower than 1.
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Conductor losses
Conductor losses result from Joule heating of electrical currents in the conductors of electrical machine windings.
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Demagnetization
Loss of magnetization of permanent magnets due to high temperatures or inappropriate operating conditions.
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Electrical frequency
The electrical frequency is the fundamental frequency of the current and voltage at the machine terminals measured in [Hz].
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