ELECTRIC POWER CONVERSION APPARATUS - MITSUBISHI ELECTRIC CORP

Title:

ELECTRIC POWER CONVERSION APPARATUS

Document Type and Number:

WIPO Patent Application WO/1984/004004

Kind Code:

A1

Abstract:

An electric power conversion apparatus, such as an inverter in which a self-arc-suppressing switching element is used as an arm element, includes snubber circuits (6U, 6X), each constituted by a capacitor and a diode, which are connected parallel to positive and negative arm elements (1U, 1X), respectively. The sides of the diodes (62U, 62X) of the two snubber circuits closer to the corresponding capacitors are connected by a diode circuit (7) to form a discharge circuit passing through reactors (2U, 2X) between the positive and negative arm elements. The apparatus is arranged so that any discharge current flowing through the diode circuit is removed by a current transformer (8) and is returned to the DC power source side.

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Inventors:

ASAEDA TAKEAKI (JP)
NAKAMURA TORU (JP)
YUTANI TAKASHI (JP)

Application Number:

PCT/JP1984/000144

Publication Date:

October 11, 1984

Filing Date:

March 28, 1984

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H02M5/27; H02M7/515; (IPC1-7): H02M7/515

Foreign References:

JPS52132327A	1977-11-07
JPS586078A	1983-01-13

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