Method of driving electric machine where half bridge idle times are compensated, involves determining dead time compensation correction value of pulse width modulation (PWM) next alternate ends from difference of desired and actual PWM

The correction values are determined for the dead time compensation for the next alternate ends of pulse width modulation (PWM) from a difference of the desired PWM and the actual PWM. The correction values correspond to the corrective dead times and the PWM adjustments. The difference between the d...

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Bibliographische Detailangaben
Hauptverfasser:	HEGER, MARKUS, HUDELMAIER, GEBHARD, BOSER, OLIVER
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The correction values are determined for the dead time compensation for the next alternate ends of pulse width modulation (PWM) from a difference of the desired PWM and the actual PWM. The correction values correspond to the corrective dead times and the PWM adjustments. The difference between the desired PWM and the actual PWM of the detected PWM current is used as PWM correction for compensating for the dead time at the earliest at alternate ends of PWM. A current sensor-less motor is driven using an inverse motor model for the control of electric machine. An independent claim is included for a method for electroless sensorless control of an electric machine in which dead times of the half-bridge are compensated. Verfahren zur Ansteuerung einer elektrischen Maschine bei dem die Totzeiten der Halbbrücken kompensiert werden, dadurch gekennzeichnet, dass Korrekturwerte zur Totzeitkompensation für eine nächst zu stellenden PWM aus einer Differenz einer Soll-PWM und einer Ist-PWM einer aktuell gestellten PWM ermittelt werden.