The Balancing of Total Losses in Three-levels Voltage Source Converters
نویسندگان
چکیده
Proiectarea convertoarelor statice de putere trebuie să asigure în orice condiţii de funcţionare o temperatură a dispozitivelor semiconductoare care să nu depăşească limitele admise. Temperatura diferitelor dispozitive semiconductoare depinde de distribuţia pierderilor totale şi de numărul de întreruptoare în modulele IGBT. În această lucrare se analizează echilibrarea pierderilor totale pentru patru structuri de invertoare cu trei niveluri de tensiune: 3L-Stacked Cells (SC), 3LNeutral Point Clamped (NPC), 3L-Active NPC (ANPC) şi 3L-Stacked NPC (SNPC). Conceptul 3L-SNPC permite dublarea naturală a frecvenţei aparente de comutaţie şi conduce la o mai bună echilibrare a pierderilor totale.
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تاریخ انتشار 2008