US 9,425,701 B2Granted

Power conversion device

AssigneesNissan Motor Co., Ltd., Nagaoka University of Technology

InventorsHironori Koyano, Takamasa Nakamura, Masao Saito, Kouji Yamamoto, Tsutomu Matsukawa, Manabu Koshijo, Junichi Itoh, Yoshiya Ohnuma

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Abstract

There is disclosed a power conversion apparatus 3 for converting polyphase ac power directly to ac power. A conversion circuit includes a plurality of first switching devices 311, 313, 315 and a plurality of second switching devices 312, 314, 316 connected, respectively, with the phases R, S, T of the polyphase ac power, and configured to enable electrical switching operation in both directions. Output lines 331, 332 formed by a pair of busbars are connected with the conversion circuit. The first switching devices and the second switching devices are so arranged that output terminals are arranged in a row. The output lines 331, 332 are connected with the output terminals and drawn out rectilinearly in one direction.

Claims16

Dependent claims

The power conversion apparatus for converting polyphase ac power directly to a single phase ac power, the power conversion apparatus comprising:

a conversion circuit including input terminals of a plurality of first switching devices connected, respectively, with phases of the polyphase ac power, and configured to enable electrical switching operation in both directions, and input terminals of a plurality of second switching devices connected, respectively, with the phases of the polyphase ac power, and configured to enable electrical switching operation in both directions;
and
a first output line for the single phase ac power connected with output terminals of the first switching devices, and a second output line for the single phase ac power connected with output terminals of the second switching devices,
as a spatial arrangement,
respective ones of the output terminals, of the first and second switching devices connected with a corresponding phase of the polyphase ac power, being arranged side by side in a pair geometrically between the input terminals of the first and second switching devices connected with the corresponding phase of the polyphase ac power,
the output terminals, of the first switching devices connected to the corresponding phase of the polyphase ac power, being geometrically linearly arranged and connected with the first output line, and the output terminals, of the second switching devices connected to the corresponding phase of the polyphase ac power, being geometrically linearly arranged and connected with the second output line,
the first output line and the second output line being drawn out geometrically between (1) the input terminals of the first switching devices and (2) the input terminals of the second switching devices.

4 more elements

A power conversion apparatus for converting polyphase ac power directly to a single phase ac power, the power conversion apparatus comprising:

a conversion circuit including three first bidirectional switching devices connected, respectively, with first, second and third phases of the polyphase ac power, and three second bidirectional switching devices connected, respectively, with the first, second and third phases of the polyphase ac power;
a first output line for the single phase ac power connected with the first bidirectional switching devices;
and
a second output line for the single phase ac power connected with the second bidirectional switching devices,
each of the first bidirectional switching devices being located on a first side of a predetermined imaginary center line and including an input terminal and an output terminal, wherein the input terminal is connected with a respective one of the first, second and third phases of the polyphase ac power and is geometrically remoter from the center line than a respective one of the output terminal of each of the first bidirectional switching devices, and the output terminal of each of the first bidirectional switching devices is connected with the first output line and is geometrically closer to the center line than the input terminal of each of the first bidirectional switching devices so that a distance from the center line to the output terminal of each of the first bidirectional switching devices is smaller than a distance from the center line to the input terminal of each of the first bidirectional switching devices;
each of the second bidirectional switching devices being located on a second side of the predetermined imaginary center line opposite to the first side and including an input terminal and an output terminal, wherein the input terminal of each of the second bidirectional switching devices is connected with a respective one of the first, second and third phases of the polyphase ac power and is geometrically remoter from the center line than a respective one of the output terminal of each of the second bidirectional switching devices, and the output terminal of each of the second bidirectional switching devices is connected with the second output line and is geometrically closer to the center line than the input terminal of each of the second bidirectional switching devices so that a distance from the center line to the output terminal of each of the second bidirectional switching devices is smaller than a distance from the center line to the input terminal of each of the second bidirectional switching devices;
and
the first output line and the second output line extending geometrically (1) between the input terminal of each of the first bidirectional switching devices and (2) the input terminal of each of the second bidirectional switching devices.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/122,259Filed 7 May 2012
Priority: JP 2011-12285231 May 2011
Published: US 2014/0185326 A13 Jul 2014
Granted: 23 Aug 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H02M 1/126
Arrangements for reducing harmonics from AC input or output: using passive filters
H02M 5/293
Using devices of a triode or transistor type requiring continuous application of a control signal: using semiconductor devices only
H02M 5/297
Using devices of a triode or transistor type requiring continuous application of a control signal: for conversion of frequency
H05K 7/14329
Specially adapted for power drive units or power converters: specially adapted for the configuration of power bus bars