VEHICLE POWER CONVERSION DEVICE

According to an embodiment, a vehicle power conversion device (11) includes a two-level converter (40), a three-level converter (50) and one cooling device (720). The two-level converter (40) comprises a capacitor (14), first switching devices (4a; 4b) and second switching devices (4c; 4d). The thre...

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Bibliographische Detailangaben
Hauptverfasser: NAKAZAWA, Yosuke, TADA, Nobumitsu, KOUNO, Yuusuke, NOGI, Masayuki, TSUKINARI, Yuuki, MAKINO, Tomoyuki
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:According to an embodiment, a vehicle power conversion device (11) includes a two-level converter (40), a three-level converter (50) and one cooling device (720). The two-level converter (40) comprises a capacitor (14), first switching devices (4a; 4b) and second switching devices (4c; 4d). The three-level converter (50) comprises two capacitors (15a; 15b), third switching devices (5a; 5b), fourth switching devices (5c; 5d) and a bidirectional switch (7). The first power modules (704a-704d) are modules in which the respective first and second switching devices (4a; 4b; 4c; 4d) are embedded. The second power modules (705a-705f) are modules in which the respective third and fourth switching devices (5a; 5b; 5c; 5d) are embedded. The second power modules (705a-705f) have dielectric strength voltages equal to or higher than a voltage applicable to any one of the two capacitors (15a; 15b) connected in series to each other included in the three-level converter (50), and the first power modules (704a-704d) have dielectric strength voltages equal to or higher than a sum of a voltage applicable to any one of the two capacitors (15a; 15b) connected in series to each other included in the three-level converter (50) and a voltage applicable to the capacitor (14) included in the two-level converter (40) .