THREE-PHASE CURRENT CONVERTER WITH VARIED INDUCTANCES AND THREE-PHASE D-SIGMA CONTROL METHOD THEREOF
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United States of America Patent
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Issued Date -
Mar 3, 2016
app pub date -
Oct 28, 2014
filing date -
Aug 29, 2014
priority date (Note) -
Abandoned
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Abstract
A three-phase current converter and a three-phase D-Σ control method with varied inductances are provided. In this method, two current variations of a first phase current, a second phase current and a third phase current flowing through a first inductor, a second inductor and a third inductor of the three-phase current converter respectively and two phase voltages of a first phase voltage, a second phase voltage and a third phase voltage are obtained. A first calculation is executed according to inductances of the inductors, the current variations and a switching period of a vector space modulation to obtain a calculation result. A second calculation is executed according to the phase voltages and the calculation result to obtain a duty ratio of the switching period of switch sets of the three-phase current converter. The inductances vary with the phase currents respectively.
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