• H SRILATHA
• Dr.M.SAILAJA

As the penetration of renewable power generation units connected to the grid increases, high power quality and flexible power regulation have raised much concern. This paper presents Model Predictive Control (MPC) of dual-mode T-source Inverters (TSI) with ability to operate in both islanded and grid-connected mode. There is a significant deviation in voltage and current during transition, due to mismatch in phase, frequency and magnitude of the voltage. The proposed controller offers smooth transition between the two modes of operations. The objective of the controller in islanded mode is to establish stable voltage for the local loads. In addition, a fast re-synchronisation scheme is introduced to achieve smooth grid connection. After connected to the grid, scheme is developed to fulfil flexible active and reactive power regulation. The controller uses the system model to predict the system behaviour in each sampling interval for each voltage vector, and the most appropriate vector is then chosen according to an optimisation criterion. The proposed direct decoupled active and reactive power control in grid -connected mode enables the dual-mode TSI to behave like a reactive power compensation device. The proposed controller features simplicity, seamless transition between modes of operations, fast dynamic response, and small tracking error in steady state condition of controller objectives.

MPC,RE SYNCHRONIZATION,TSI(T SOURCE INVERTER)

"MODEL PREDICTIVE CONTROL OF DUAL MODE OPERATION OF T SOURCE INVERTER:ISLANDING AND GRIDCONNECTED MODE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.254-265, July-2018, Available :http://www.jetir.org/papers/JETIR1807757.pdf

"MODEL PREDICTIVE CONTROL OF DUAL MODE OPERATION OF T SOURCE INVERTER:ISLANDING AND GRIDCONNECTED MODE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp254-265, July-2018, Available at : http://www.jetir.org/papers/JETIR1807757.pdf