US 2015/0085551 A1Published application

Matrix converter

AssigneeKabushiki Kaisha Yaskawa Denki

InventorKentaro INOMATA

Life of this patent

Estimating the term…

Loading patent…

Abstract

A matrix converter includes a power converter and a controller. The power converter includes bidirectional switches each having a controllable conducting direction. The bidirectional switches are disposed between input terminals and output terminals. The input terminals are respectively coupled to phases of an AC power source. The output terminals are respectively coupled to phases of a load. The controller controls the bidirectional switches. A first commutation controller performs commutation control when the conducting direction is unidirectional. A second commutation controller performs the commutation control when the conducting direction is bidirectional. A selector selects between the first commutation controller and the second commutation controller to perform the commutation control based on a state of an output current from the power converter.

Claims5

Dependent claims

A matrix converter comprising:

a power converter comprising a plurality of bidirectional switches each having a controllable conducting direction, the bidirectional switches being disposed between a plurality of input terminals and a plurality of output terminals, the plurality of input terminals being respectively coupled to phases of an AC power source, the plurality of output terminals being respectively coupled to phases of a load;
and
a controller configured to control the plurality of bidirectional switches, the controller comprising:
a first commutation controller configured to perform commutation control in a state where the conducting direction of the bidirectional switches is unidirectional;
a second commutation controller configured to perform the commutation control in a state where the conducting direction of the bidirectional switches is bidirectional;
and
a selector configured to select between the first commutation controller and the second commutation controller to perform the commutation control based on a state of an output current from the power converter.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/495,895Filed 25 Sep 2014
Priority: JP 2013-19979626 Sep 2013
Published: 26 Mar 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

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
H02M 5/2932
Using semiconductor devices only: with automatic control of output voltage, current or power
H02M
Apparatus for conversion between ac and ac, between ac and dc, or