Adaptive Power Decoupling Control for Single-Phase Converter With Unbalanced DC-Split-Capacitor Circuit
Shiming Xie, Yao Sun, Jianheng Lin, Xing Li, Mei Su, Yonglu Liu, Wenjing Xiong
Abstract
This article proposes an adaptive power decoupling control strategy for a single-phase rectifier with an unbalanced split-capacitor decoupling circuit. Since a capacitance mismatch estimator is integrated into the control strategy, the impact of capacitance mismatch is eliminated. Meanwhile, the capacitance mismatch estimator can provide an auxiliary online monitor for the health of split capacitors. Moreover, the mechanism of capacitor voltages self-balance is explained. Finally, experiments are conducted to verify the effectiveness of the proposed method.
Topics & Concepts
Decoupling (probability)Decoupling capacitorCapacitorCapacitanceControl theory (sociology)Electronic engineeringRectifier (neural networks)Variable capacitorVoltageEstimatorPower (physics)Computer scienceEngineeringElectrical engineeringControl (management)Control engineeringMathematicsPhysicsStochastic neural networkStatisticsMachine learningRecurrent neural networkElectrodeQuantum mechanicsArtificial neural networkArtificial intelligenceAdvanced DC-DC ConvertersMultilevel Inverters and ConvertersMicrogrid Control and Optimization