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An important issue faced while employing Pyroelectric InfraRed (PIR) sensors in an outdoor Wireless Sensor Network (WSN) deployment for intrusion detection, is that the output of the PIR sensor can, as shown in a recent paper, degenerate into a weak and unpredictable signal when the background temperature is close to that of the intruder. The current paper explores the use of an optical camera as...
An optical camera was recently employed by a subset of the authors as a sensing modality complementary to that of a Pyroelectric InfraRed (PIR) sensor, for carrying out intrusion detection and classification in an outdoor environment. The aim there was to develop a classification algorithm that mimicked the performance of the PIR sensor and which was complementary to the PIR in the sense that it could...
Prior work by a subset of the authors led to the development of a Pyroelectric Infrared (PIR) sensor platform for the purposes of distinguishing in an outdoor environment, between human and animal intrusion while rejecting false alarms arising from wind-blown vegetation. The algorithm employed there, modeled the intrusion signal as a linear combination of chirplets. The extracted chirplet-based features...
In recent years electrical power production using wind turbine technology has became a prominent region amongst all non-conventional sources for researchers. Based on the aerodynamic configuration of wind turbine variable speed wind technology has been implemented far and wide to track ample energy from the fluctuating wind. From the reliability, maintenance, cost and efficiency point of view permanent...
In this paper a hybrid Microgrid system has been taken into consideration. A 22KW SEI G based micro-hydro system, an 18KW PV Array and a 7.5 KW DFIG based wind system are supplying power to a time varying load. The micro-hydro system is fed from a constant power source. The PV array with a boost converter supplies active power through the Grid Side Converter-I which controls the PV power fed to the...
In this paper a nested power-current-voltage control scheme is introduced for control of single phase power inverter, integrating small-scale renewable energy based power generator in a microgrid for both stand-alone and grid-connected modes. The interfacing power electronics converter raises various power quality issues such as current harmonics in injected grid current, fluctuations in voltage across...
It has become now a big challenging task to generate electricity in remote locations without the help of any external energy sources. One of the most effective solution to encounter this problem is the use of self excited induction generator producing electricity even in the absence of external energy source. Though self excited induction generator can act as a good isolated source of electricity,...
Self excited induction generators are preferred to be one of the best machines for generation of electricity in remote and rural areas due to its capability of generating electricity without any external source. But on the other hand it is also a challenging task to maintain its voltage and frequency under load varying condition. In this paper we have considered a micro grid system with a Self excited...
Power shortage has become a very serious problem for the power distribution and consumers. Along with it, power demand at remote locations and providing uninterrupted power have created more challenges which have to be dealt with. The most feasible solution for these problems is distributed generation or formation of micro-grids involving renewable energy sources. But micro-grids suffer from voltage...
Micro grids have become ultimate solution to the energy crisis in the world. But the micro grid are most vulnerable while working in the isolated mode. Because due to the small generation capacity and highly fluctuating loads the voltage profile of the micro grid system deteriorates, which undesirable voltage dips and even causes instability. To get rid of these problems many FACTS devices have been...
Now a days the entire world is considering an escalating demand for electrical energy as a consequence of the hasty population augmentation. The superior penetration of wind energy technology for electrical power production has been growing since past decade due to the unique impressive features of wind technology viz. pollution free, cost effective, low initial cost, less maintenance requirement...
Wind energy conversion system (WECS) technology has been evolved from conventional driven to optimized driven in recent years. For unique features of PMSG like high power density, less maintenance requirement in comparison to the other kind of machine, it is pioneering in the WECS technology. In this paper modeling of PMSG and PWM converter have been explored well. The control of PMSG in its machine...
Optimum utilization of photovoltaic (PV) energy is possible if PV system is operated at its maximum power point (MPP). Since the MPP varies with change in irradiation and temperature, appropriate algorithm must be incorporated in the PV system to track the MPP. There are number of maximum power point tracking (MPPT) algorithms available in the literature with its own merits and demerits. Among different...
Wind energy is the most exploited renewable energy source due to its wide availability. Wind energy conversion systems normally are remotely situated and often are connected to micro grids which can either operate in grid connected mode or islanding mode. Sudden load increases in a micro grid system causes severe voltage dips which affect greatly affects the performance of the Wind energy conversion...
This paper focuses on modelling and simulation of a single phase grid connected photovoltaic (PV) system using Matlab/Simulink software. The PV system is interfaced with the grid by a single phase voltage source inverter (VSI). A maximum power point tracking (MPPT) controller is designed to draw maximum power from the PV array. The DC-DC boost converter carries out the task of MPP tracking and amplifies...
This paper compares different methods for extraction of photovoltaic (PV) module parameters. Nonlinear least-square method based on trust-region algorithm is proposed here to extract five unknown parameters such as series resistance (Rs), shunt resistance (Rp), diode ideality factor (a), dark saturation current (I0) and photo-generated current (Ipv) under standard test conditions (STC) of PV module...
This paper deals with the implementation of series active filter for compensation of current harmonics and analysis of the stability of the system. The series active filter and shunt passive filter combination allows a better compensation performance of nonlinear load. So the hybrid series active filter(HSAF) behaves as a harmonic isolator in between source and load. Due to the presence of passive...
This paper compares the different approaches for extraction of PV module parameters. The trust-region-doleg method is proposed here for extraction of five parameters such as series resistance (Rs), shunt resistance (Rp), diode ideality factor (a), dark saturation current (I0) and photo-generated current (Ipv) under standard test conditions (STC). The comparative analysis is made by taking Villalva's...
This paper presents the control of doubly-fed induction generator (DFIG) for wind energy conversion system by employing stator flux oriented control in the rotor-side converter. The control algorithm is implemented in digital environment using DSP TMS320F2812 processor. A decoupling term has been developed for the cross coupling of d-q stator flux components, and computer simulations as well as laboratory...
It is the general trend to increase the electricity production using distributed power system (DPGS), which is based on renewable energy sources such as wind, solar, fuel cell etc. These systems are to be properly controlled in order to provide reliable power to the utility network. For that power electronics converters are used as an interfacing device between DPGS and utility network. In case of...
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