Patent ID: 8564995
Filing Date: 2013-10-22
Classification: H02M

Abstract:
1. A three-phase current converter controlling method, for executing within a three-phase current converter controlling device, the three-phase current converter controlling device is for controlling a three-phase current converter, and the three-phase current converter comprises a first inductor, a second inductor and a third inductor respectively located in the first phase, the second phase, and the third phase, the three-phase current converter controlling method comprising: subtract a second reference current signal representing the predicted current of the three-phase current converter's three-phase terminals in the present switching cycle from a first reference current signal representing the predicted current of the three-phase current converter's three-phase terminals in the next switching cycle so as to obtain a predicted variation value; delay the second reference current signal by one switching cycle, then subtract a feedback current signal representing the feedback current of the three-phase current converter's three-phase terminals in the previous switching cycle from the second reference current signal that has been delayed by one switching cycle so as to obtain a current error value; multiply the current error value by an error coefficient, then add the predicted variation value to obtain a current variation value; and obtain duty ratios of a plurality of switches of the three-phase current converter according to the current variation value and a first inductance of the first inductor, a second inductance of the second inductor, and a third inductance of the third inductor; wherein the three-phase current converter converts electric power between a DC terminal and the three-phase terminals of the three-phase current converter according to duty ratios of the plurality of switches.