Method and apparatus for PWM drive

During PWM control in which an actuator ( 9 ) is connected between the output terminals of a bridge circuit made up of switching elements ( 121, 122, 221, 222 ) and power is applied to the actuator ( 9 ) with signals G 1 U, G 1 L, G 2 U and G 2 L, driving timing signals are generated with a time int...

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Bibliographische Detailangaben
Hauptverfasser:	FURUNO TOMOKAZU, IWANAGA AYAKO
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	During PWM control in which an actuator ( 9 ) is connected between the output terminals of a bridge circuit made up of switching elements ( 121, 122, 221, 222 ) and power is applied to the actuator ( 9 ) with signals G 1 U, G 1 L, G 2 U and G 2 L, driving timing signals are generated with a time interval (dead time) during which the switching elements ( 121, 122 ) and the switching elements ( 221, 222 ) are simultaneously turned off, and the actuator ( 9 ) is driven so as to have no overlapping dead time between a pair of half-bridge circuits, achieving response even with a differential input PWM signal (S 51 -S 52 ) having a small time difference.