Power Factor Angle Droop Control—A General Decentralized Control of Cascaded Inverters
Yao Sun, Lang Li, Guangze Shi, Xiaochao Hou, Mei Su
Abstract
This letter proposes a general decentralized control of single phase cascaded inverters-power factor angle droop control. Compared to the existing control strategies, it has the following attractive benefits: 1) it is suitable for both grid-connected and islanded modes; 2) Seamless transition between different modes can be obtained; 3) stability condition in the grid-connected mode is independent of the transmission line impedance; 4) it is suited for any types of loads in islanded modes; 5) multi-equilibrium point problem is avoided; 6) it is suitable for four quadrant operation of inverters. The small signal stability of the control is proved.
Topics & Concepts
Voltage droopControl theory (sociology)Power factorElectrical impedanceGridPower controlEngineeringTransmission lineAC powerAutomatic frequency controlElectric power transmissionPower (physics)Control (management)Computer scienceVoltageVoltage sourceElectrical engineeringMathematicsPhysicsGeometryArtificial intelligenceQuantum mechanicsMicrogrid Control and OptimizationMultilevel Inverters and ConvertersHVDC Systems and Fault Protection