Power converter

Japanese Patent JP6038293

B2

In order to simply switch a switching frequency, a power conversion device (13) is disposed between an AC power source (1) and a load (12) and includes: a rectifier circuit unit (2) that rectifies a voltage of the AC power source (1); a smoothing unit (25) that smooths a DC voltage on the load (12) side of the rectifier circuit unit (2); a short-circuiting unit (24) that is disposed on the AC power source (1) side of the smoothing unit (25) and that short-circuits the AC power source (1); a step-up reactor (4) that is disposed on the AC power source (1) side of the short-circuiting unit (24); at least one of a reactor current detecting unit (8) that detects the current of the step-up reactor (4) and a bus voltage detecting unit (9) that detects an output voltage of the smoothing unit (25); a counterflow preventing element (6) that prevents a counterflow of the current from the smoothing unit (25) to the AC power source (1); a switching control unit (10) that generates a drive pulse from the output signal of the reactor current detecting unit (8) or the bus voltage detecting unit (9) and that outputs a control signal for the short-circuiting unit (24); and a switching frequency changing unit (11) that is disposed between the switching control unit (10) and the short-circuiting unit (24) and that changes a frequency of the control signal using a logic operation.

Takuya Shimoda
Kenta Yuasa
Yosuke Shinomoto
Shinsaku Kusube

JP2015511059A

December 07, 2016

April 12, 2013

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Mitsubishi Electric Corporation

H02M7/12

JPH11341791A	1999-12-10
JP2010074895A	2010-04-02

WO2012101698A1	2012-08-02
WO2012137258A1	2012-10-11

Hiroaki Sakai

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