ELECTRIC POWER CONVERSION DEVICE, AND ELECTRIC POWER CONVERSION METHOD

ELECTRIC POWER CONVERSION DEVICE, AND ELECTRIC POWER CONVERSION METHOD

Provided is a power conversion device including a plurality of switching elements connected in parallel, the power conversion device suppressing temperature imbalance due to delay time variation and temperature imbalance due to on-voltage variation. A power conversion device including a plurality of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ENDO, Shun, TAKAYAMA, Naoki, SEKI, Masaki, SHIMADA, Takae, ANDO, Masato, HIRUTA, Kiyoharu
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 THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:Provided is a power conversion device including a plurality of switching elements connected in parallel, the power conversion device suppressing temperature imbalance due to delay time variation and temperature imbalance due to on-voltage variation. A power conversion device including a plurality of switching elements; a temperature sensor that detects temperatures of the plurality of switching elements; a carrier frequency adjusting unit that adjusts carrier frequencies of the plurality of switching elements; a delay time adjusting unit that adjusts turn-on times or turn-off times of the plurality of switching elements; and a gate voltage adjusting unit that adjusts on-voltages of the plurality of switching elements, in which the temperature sensor detects a change amount of a temperature difference between the plurality of switching elements before and after carrier frequency adjustment by the carrier frequency adjusting unit, and the delay time adjusting unit adjusts turn-on times or turn-off times of the plurality of switching elements on the basis of the detected change amount of the temperature difference.