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.
POWER CONVERSION DEVICE, POWER SUPPLY DEVICE FOR TRANSFORMER SUBSTATION, AND REGENERATIVE POWER STORAGE DEVICE
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
2024-08-07
Patent
Electronic Resource
English
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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