INVERTER CONTROL DEVICE AND ELECTRIC COMPRESSOR FOR AC MOTOR

In driving an AC motor using a DC current via a 3-phase PWM inverter, while a 3-phase AD motor current is precisely detected by only a means for measuring a DC input current to the 3-phase PWM inverter, resonance on a DC power source side caused by a ripple current is suppressed. Using a carrier Cry...

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Bibliographische Detailangaben
Hauptverfasser:	AIBA, Kenichi, TAKASHIGE, Takayuki
Format:	Patent
Sprache:	eng ; fre ; 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:	In driving an AC motor using a DC current via a 3-phase PWM inverter, while a 3-phase AD motor current is precisely detected by only a means for measuring a DC input current to the 3-phase PWM inverter, resonance on a DC power source side caused by a ripple current is suppressed. Using a carrier Cry_e earlier than that of a V phase to sample a U phase and using a carrier Cry_l always later than that of the V phase to sample a W phase, a sampling time sufficiently longer than each interval Ts respectively between the carrier Cry_e, Cry_m, and Cry_l can be secured and the current is detected easily.