Power conversion device

H - Electricity – 02 – M

Patent

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Details

H02M 7/48 (2007.01) H02M 7/487 (2007.01) H02H 7/10 (2006.01) H02J 9/06 (2006.01) H02M 7/12 (2006.01) H02M 7/219 (2006.01)

Patent

CA 2718620

A three-level PWM converter includes first to third fuses having one terminals connected to a DC positive bus, a DC negative bus and a DC neutral point bus, respectively, first and second IGBT elements connected between respective ones of the other terminals of the first and second fuses and an AC line, an AC switch connected between the AC line and the other terminal of the third fuse, first and second diodes connected in anti-parallel to the first and second IGBT elements respectively, a first capacitor connected between the other terminals of the first and third fuses, and a second capacitor connected between the other terminals of the second and third fuses.

La présente invention concerne un convertisseur PWM à 3 niveaux (3) qui comprend d'un premier, un deuxième et un troisième fusibles (F1R - F3R) raccordés, respectivement, à un bus positif en CC (13), un bus négatif en CC (14) et un bus neutre en CC (15) aux bornes d'un côté ; un premier et un second éléments IGBT (Q1R, Q2R) raccordés entre les autres bornes du premier et du deuxième fusibles (F1R, F2R) et une ligne en CA (RL) ; des commutateurs en CA (Q3R, Q4R, D3R, D4R) raccordés entre la ligne en CA (RL) et l'autre borne du troisième fusible (F3R) ; une première et une seconde diode (D1R, D2R) raccordées en parallèle inverse au premier et au second éléments IGBT (Q1R, Q2R), respectivement ; un premier condensateur (C1R) raccordé entre les autres bornes du premier et du troisième fusibles (F1R, F3R) ; et un second condensateur (C2R) raccordé entre les autres bornes du deuxième et du troisième fusibles (F2R, F3R).

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