Patent ID: 9001542
Filing Date: 2015-04-07
Classification: H02M

Abstract:
1. A current-source power converting apparatus comprising: an inverter including, in every output phase, a plurality of switching elements that are serially connected between a positive pole and a negative pole of a direct current source; and a drive controller that controls the inverter in accordance with a current command in an output mode of controlling the switching elements of different output phases for supplying current between the output phases, and a short circuit mode of controlling the switching elements of the same output phase, wherein the output phase in which the drive controller executes the short circuit mode is, among the output phases, the output phase whose phase voltage or phase current has a minimum absolute value, wherein the drive controller includes wherein the output phase in which the drive controller executes the short circuit mode is the output phase determined by the determiner to be the output phase with the minimum absolute value of the phase voltage, wherein the drive controller includes wherein the drive controller determines two different output phases of a first output phase being a target of the short circuit mode when the carrier signal is smaller than all the corrected line to line current commands and a second output phase being a target of the short circuit mode when the carrier signal is larger than all the corrected line to line current commands, and wherein the line current command corrector generates the corrected line to line current commands by increasing or decreasing the plurality of line to line current commands in accordance with the output phase determined to be the output phase with the minimum absolute value of the phase voltage.