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In this DFIG there were mainly two parts, one is converter on rotor side (RSC) and other is converter on grid side (GSC). Using RSC reduces the amount of ohmic losses in windings of rotor and is used to share reactive power at less than wind speeds at rated value. Nevertheless, the power factor at unity is must maintained through this control. As a part of GSC system provides reactive power to DFIG as well as regulated power flow to the grid and load is connected at common coupling point. It is used to remunerate imbalance and harmonics on load side. We can use PMSG but in practical we can't use PMSG we use DFIG which is double fed Induction Generator it works on clockwise and the Anti clock wise direction according to the wind. [ABSTRACT FROM AUTHOR]

Abstract-As we all know that most of the electricity generated by fossil fuels. In view of increasing the demand of electricity in domestic, industrial, agriculture and commercial purposes. We are looking for alternate source, which is solar power generating by PV cells. Solar power generation depends on the availability of solar radiation and temperature throughout the day. MPPT method is used to generate more power and this technique is environmentally friendly. Various methods are there to control MPPT, which are AI, FLC, NN, Constant V/I and PO (Perturb and observe) methods. This paper explains modeling, simulation of MPPT algorithm for PV array using boost converter. At the end results obtained in MATLAB using Simulink. [ABSTRACT FROM AUTHOR]

Evolution of multilevel converters (MLC) has increased the prominence of front-end converters (active rectifiers) for various applications such as high-performance electric drives, plugin electric vehicles (PEV), grid connected systems, and battery energy storage systems (BESS). Abundant switching redundancies, modularity and fault tolerance ability of classical cascaded H-bridge acted as value additions and enhanced their scope among the conventional MLC such as diode clamped (DCMLC) and Flying capacitor MLCs. Though various reduced switch count multilevel inverters are reported in recent times, none of them possess the dominant ability to serve as viable alternative to CHB. Thus, this work discusses the Simulink implementation of CHB MLC for three-phase active front end applications. The performance of the developed Simulink model is tested for dynamic variations in load and reference variable. [ABSTRACT FROM AUTHOR]

This paper deals with the average value modelling of the inverter fed Brushless DC (BLDC) motor, which is complicated because its difficult shape of switching pulses of stator currents. The average value model that properly indicates the BLDC motor with a 120° inverter commutation and conduction of sub-intervals is dealt in this research work. The chosen model that uses an appropriate qd model of the electrical machine is explicit here. The BLDC motor based system discussed in this paper is used for low power rated oil pumps, fans and boats etc. such as liquid pumps and small marine boats, etc., the engine discussed in this paper can be used. With respect to analysis of large and small signals, the proposed model is shown to be more exact. [ABSTRACT FROM AUTHOR]

In the present paper, stable and unstable regions of fractional based load frequency control(LFC) for a two area system have been estimated. The communication delay due to measurements and other reasons is also considered in the present system. A graphical technique has been utilized to find the locus of fractional controller parameters. The system with controller is examined in MATLAB environment by considering various controller parameter values from different regions. The simulation results show that fractional controller has wide range of stability regions as compared to simple PI controller. [ABSTRACT FROM AUTHOR]