Four-Switch Single-Phase Common-Ground PV Inverter With Active Power Decoupling
Xin-dong Xu, Mei Su, Yao Sun, Bin Guo, Hui Wang, Guo Xu
Abstract
This letter presents a transformerless single-phase PV inverter, which combines with common-ground and active power decoupling techniques. The leakage current is eliminated and bulky electrolytic capacitors are removed, thus improving the system safety and reliability. In addition, it needs only four switches and can be implemented conveniently by a commercial H-bridge module. The validity of the inverter is verified with a 2-kW prototype.
Topics & Concepts
Decoupling (probability)InverterCapacitorGroundElectrical engineeringPhotovoltaic systemElectronic engineeringDecoupling capacitorEngineeringReliability (semiconductor)Three-phaseComputer sciencePower (physics)VoltagePhysicsControl engineeringQuantum mechanicsMultilevel Inverters and ConvertersPhotovoltaic System Optimization TechniquesAdvanced DC-DC Converters