A Novel Fuzzy Logic Controller Topology for Grid Connected PV System by DC Voltage Droop Controller

This paper offers implementation of fuzzy logic controller based on droop control to research the inertia and damping and synchronization impacts. A fuzzy logic controller is cascade to solar panel (pv) and grid inverter. Proposed fuzzy logic controller of gain values injected into droop control. With droop control of inertia and damping of capacitor $(c_{2})$ voltage and power could be low and reassuming its operation with FLC to control amplitude of capacitor voltage $(c_{2})$ and power. To investigate the primary parameters of inertia analysis and damping analysis and synchronization methods. The studies effects shows that initially inertia has some energy when capacitor $(c_{2})$ voltage and dc converter off state. To analysis of primary conditions, droop impact $(D_{p})$ is less then inertia impact is more, and more proportional coefficient $(K_{p})$ then damping impact is more, and larger of integral coefficient $(K_{i})$ then more synchronization impact. These results are evaluated by using MATLAB/SIMULINK software.