The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This work deals with the development of a new ‘intelligent monkey king evolution (IMKE) algorithm’ for maximum power peak (MPP) detection under partially shaded solar photovoltaic (SPV) conditions. The major advantages of the developed technique are simple in implementation, population free, extremely less memory requirement, zero algorithms constant dependence, fast convergence and perfect structure...
Applications that demand stringent conditions on output dc voltage ripple require models that can accurately predict the magnitude of ripple at the output voltage. The paper analyses the impact of dc input ripple on the output ripple for Series Resonant Converter (SRC) using discrete domain sampled data modelling method. The paper presents a novel discrete state space and small signal model for SRC...
Technological advancements has made production of electrical energy more efficient and minimized the consumption of non-renewable sources of energy. Wind energy has been harvested for more than a decade and has been considered to be one of the cleaner methods of producing electricity. This paper focuses on wind electric system connected to the grid. There are different types of wind electric generators...
Approximate analytical solution of linear or nonlinear ordinary differential equations (ODE) can be obtained by Adomian decomposition (ADM) method. The nonlinearities in the ODEs are approximated by Adomian polynomials and a rapidly convergent sequence of approximate functions will be obtained as a solution. The ADM is widely used for numerical simulations of real-world systems in the applied sciences...
A modeling approach for the electrochemical batteries, which is suitable for in-circuit parameter extraction is presented. The charge flow in an electrode reaction is governed by the mass transport regime within the cells. For sufficiently higher charge flow rates, the mass transport rate decides the limit. Hence modeling the battery, centered around the mass transport mechanism can have the benefits...
In this paper, the IEEE-specified generator models such as the equivalent circuit (EC) models and the operational inductance (OI) models are compared to analyze the influence of the differences in the standard transfer functions among these models on the large-disturbance rotor-angle stability (or transient stability) of the power system. The large disturbances such as unsymmetrical and symmetrical...
In this paper, a forced commutation technique for a thyristor-based current source inverter (CSI) used in load commutated inverter (LCI) drive is presented. This auxiliary commutation circuit is required only during the starting of the Synchronous machine. The commutation circuit employs four thyristors and a capacitor. A pair of thyristors in the auxiliary circuit is triggered, whenever a pair of...
Present electromagnetic contactless energy transfer systems (CET) powering vibrational actuators in vibration assisted rotary machining are designed for drive systems operating at one frequency. Such systems are composed of a resonant actuator, a CET system and compensation circuits and are matched to the resonance frequency to optimize power efficiency and reduce size. In this work a design concept...
This paper brings forward a hybrid converter derived from the Split-Pi converter, which can provide simultaneous ac as well as dc outputs from the same dc input. The proposed converter can work both as a step up and step down converter, whereas most of the available hybrid topologies work in step up mode only. The inbuilt property of shoot through protection in inversion stage, makes this converter...
The huge penetration of wind energy sources in the micro grid makes the grid operations more intrinsic. The intermittent nature of wind fluctuates the electrical power output of the wind generator. The battery storage mechanism are usually employed to mitigate these power fluctuations to an extend. This paper presents the modeling and control of grid connected wind driven Doubly Fed Induction Generator...
The paper describes the estimation of parameters of battery model at various temperatures for the Li-ion battery. The estimation of parameters employs experimental methods that are time-consuming, expensive and require high computational power. Hence, second-order RC network equivalent circuit model parameters estimation is done using GA, PSO, and DE optimization techniques. For proper evaluation,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.