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In modern power systems, a little pay raise in the energy effectiveness is a critical change and challenge for power system administrators. This can be accomplished by introducing a perfect and manageable energy source with zero fuel cost.With supposed favorable circumstances, it is most encouraging and quickest developing energy source that speaks to the biggest measure of the renewable energy sources associated with the electric system by and large, a PVCELL and Wind comprises of an alternator with power change gadgets to meet the matrix codes. In such manner, generally, DC to AC power transformation gadgets i.e., inverters go about as interface between the PV CELL and Wind network. The ordinary inverters are two level voltage source converters with restricted capacities for new topologies and control plans. In any case, with the propelled power electronic advances, there is a probability of creating three stage multilevel inverter topologies and complex control procedures. In this way, the innovation will be focused to enhance the ability of customary inverter of PV CELL into a CPD I. INTRODUCTION The Demand for renewable energy has expanded essentially throughout the years as a result of deficiency of fossil fuels and nursery impact. The meaning of renewable energy incorporates any sort of energy created from normal assets that is vast or always restored. Case of renewable energy incorporate solar oriented, wind, and hydropower. Renewable energy, because of its free accessibility and its spotless and renewable character, positions as the most encouraging renewable energy assets like solar powered energy, Wind energy that could assume a key part in understanding the overall energy emergency. Among different sorts of renewable energy sources, solarlight based energy and wind energy have turned out to be exceptionally prevalent and requesting because of headway in power hardware procedures [1]. Photovoltaic (PV) sources are utilized today as a part of numerous applications as they have the upsides of successful upkeep and contamination free. Solar powered electric energy request has developed reliably by 20% to 25% for every annum in the course of recent years, which is basically because of its diminishing expenses and costs. This decrease has been driven by the accompanying variables. 1) An expanding proficiency of solar oriented cells, 2) Manufacturing innovation upgrades, 3) Economies of scale. PV inverter, which is the heart of a PV system, is utilized to change over DC power acquired from PV modules into ac energy to be encouraged into the matrix. Enhancing the yield waveform of the inverter decreases its individual symphonious substance and, thus, the span of the channel utilized and the level of Electromagnetic Interference (EMI) created by exchanging operation of the inverter [2]. As of late, multilevel inverters have turned out to be more alluring for scientists and makers because of their points of interest over traditional multilevel PWM Inverters. They offer enhanced yield waveforms, littl...

This paper addresses the solution of load flow equa-tions for a power system with series flexible ac -transmission systems(FACTS) devices. A novel formulation of equations using dual state variables (current magnitude and angle) and dual controlvariables (series injected real power and series voltage in quadra-ture with current) for series devices is proposed. These specifica-tions can be related to transmission line loading and device limits.Specifications like power flow through a series device can also be handled using this formulation. The load flow equations are solved using Newton-Raphson technique. A decoupled formulation is also proposed. Case studies are carried out on IEEE test systems withseveral types of specifications to validate the method.