Method for the commutation of brushless direct current motor

A method for the commutation of a brushless direct current motor having at least one motor winding in which the position of the rotor with respect to the stator is determined, a commutation signal is generated from the position, and the motor winding is energized by a preset commutation angle as a f...

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Bibliographische Detailangaben
Hauptverfasser:	LELKES ANDRAS, BERBATOV NIKOLAY
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER CURRENT COLLECTORS ELECTRICITY GENERATION LINE CONNECTORS
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Beschreibung
Zusammenfassung:	A method for the commutation of a brushless direct current motor having at least one motor winding in which the position of the rotor with respect to the stator is determined, a commutation signal is generated from the position, and the motor winding is energized by a preset commutation angle as a function of the commutation signal. Depending on the construction and energization of the motor, either (i) the polarity of the winding current is registered when a commutation signal appears and the commutation angle is changed as a function of the recorded polarity of the winding current in such a way that the winding current is essentially zero or has a zero point when a commutation signal appears, or (ii) the absolute value of the winding currents is measured and the commutation angle is changed as a function of the absolute value of the winding currents in such a way that the total excitation of the momentary phase calculated from the winding currents is essentially zero when a commutation signal appears.