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Performance of DC/AC Inverters is decreased due to variable load parameters. Based on a voltage and current double closed-loop control inverter model, a novel load on-line parameter estimation control method is proposed. In this method, load parameters of inverters are calculated on-line. And then, controller coefficients of inverters are modified according to load parameters. Modify strategy of controller...
A novel control method is presented for improving the reliability of transformerless cascade STATCOMs operating under various faults. A modified H bridge circuit is proposed, and it could be totally bypassed under various faults while the STATCOM keep working. During the fault transient, by controlling the phase of a STATCOMpsilas output voltage, the DC capacitors could be charged or discharged to...
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