Delayed LMS Based Adaptive Control of PV-DSTATCOM System

The dual-mode single-stage PV-DSTATCOM (Photovoltaic-Distributed Static Compensator) system tied to the AC grid is presented using a DLMS (Delayed Least Mean Square) based adaptive control technique. The proposed multifunctional PV-DSTATCOM system works under two main modes of operation: 1) DSTATCOM and 2) PV-DSTATCOM mode. In mode-1, when there is no PV power generation, it acts as a DSTATCOM for mitigating various power quality issues at Point of Common Coupling due to high Total Harmonic Distortion of load currents. In mode-2, it acts as a PV-DSTATCOM and transfers power to the AC grid and loads. For implementing the dual modes of operation, an intelligent DLMS based adaptive control algorithm is implemented on a developed laboratory prototype to carry out several experimental tests under varying conditions.