CONTROL DEVICE FOR POWER CONVERSION DEVICE

A power converter has a capacitor (31) and a power conversion unit (30) having a series-connected unit composed of an upper arm side switching element (QUH, QVH, QWH) and a lower arm side switching element (QUL, QVL, QWL). The capacitor is connected in parallel with the series connection unit. The p...

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Bibliographische Detailangaben
Hauptverfasser:	SHINDO, Yusuke, KAZAOKA, Ryoya, TOSHIYUKI, Ken, KUBO, Shunichi
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 CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER 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 ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS SYSTEMS FOR STORING ELECTRIC ENERGY TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A power converter has a capacitor (31) and a power conversion unit (30) having a series-connected unit composed of an upper arm side switching element (QUH, QVH, QWH) and a lower arm side switching element (QUL, QVL, QWL). The capacitor is connected in parallel with the series connection unit. The power conversion unit supplies electric power to a motor (40). A controller (50) for the power conversion unit has a frequency characteristics estimation part (62) estimating frequency characteristics of a battery current of the battery when a current is flowing between the power convertor and the battery (10), a ripple current setting part (63) determining a ripple frequency of a ripple current contained in the battery current based on the frequency characteristics of the battery current, and a control part (59) performing a switching control of the switching elements based on the ripple frequency in order to generate the ripple current.