The purpose is to realize a small-sized power conversion device with a storage battery insulated from a power circuit. The power conversion device according to the present embodiment includes a chopper circuit (5) having a step-down output terminal electrically connected to the positive electrode terminal of a DC power supply (2) via a reactor (8) ; an inverter (INV1) having first DC main circuits electrically connected between the positive electrode terminal and negative electrode terminal of a DC power supply (1); an inverter (INV2) having second DC main circuits electrically connected to the high-voltage circuit side of the chopper circuit (5); a transformer (15) electrically connected between the AC terminal of the inverter (INV1) and the AC terminal of the inverter (INV2); a capacitor (13) connected in parallel to the DC power supply (1); a capacitor (12) arranged between the inverter (INV2) and the chopper circuit (5) and connected between the second DC main circuits; and a control circuit (CTR) configured to control the phases of the output voltages of the inverter (INV1) and inverter (INV2) in such a manner that power can be bidirectionally interchanged.


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    Title :

    POWER CONVERSION DEVICE, POWER SUPPLY DEVICE FOR TRANSFORMER SUBSTATION, AND REGENERATIVE POWER STORAGE DEVICE


    Additional title:

    LEISTUNGSUMWANDLUNGSVORRICHTUNG, STROMVERSORGUNGSVORRICHTUNG FÜR EINE TRANSFORMATORUNTERSTATION UND REGENERATIVE ENERGIESPEICHERVORRICHTUNG
    DISPOSITIF DE CONVERSION DE PUISSANCE, DISPOSITIF D'ALIMENTATION EN PUISSANCE POUR SOUS-STATION DE TRANSFORMATEUR, ET DISPOSITIF DE STOCKAGE DE PUISSANCE RÉGÉNÉRATIVE


    Contributors:
    NOGI MASAYUKI (author) / MAKI KOJI (author)

    Publication date :

    2024-08-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen




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