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Small signal mathematical model, Open loop frequency response and closed loop analysis of Active Clamp Forward Converter with Current Doubler Rectifier (ACFC-CDR) in PSIM & MATLAB are presented in this paper. Forward converter includes a transformer to achieve galvanic isolation and to transfer energy. This converter consist of active clamp circuit to reveal energy stored in magnetizing and leakage...
A novel and generalised three-phase multilevel inverter (MLI) with a minimum number of switches have been proposed. The number of voltage levels can be increased to a significant value by incorporating few switches and the DC voltage sources. In the proposed three-phase MLI, the number of phase-voltage levels can be increased twice as the number of switches increased. The detailed analysis of the...
Delivering an uninterrupted supply of electricity to the consumers is the foremost commitment for the electric power industries. Fault current limiters (FCL) have been a popular choice in providing the same. Various technologies have been put forward for providing an effective current suppression. But owing to various advantages like fast action and recovery, the saturated iron core superconducting...
Earlier reports indicate that ethanol/bioethanol can replace conventional diesel fuel by 15%, when it is emulsified with diesel and used as an alternative fuel in a compression ignition (CI) engine. In this study, initially BMDE15, a bioethanol emulsion containing 15% bioethanol, 84% diesel and 1% surfactant was characterised for its fuel properties and compared with those of diesel fuel properties...
Permanent magnet synchronous motors (PMSM) have been accepted and used as variable speed drives because of its static and dynamic characteristics such as lesser volume, light weight, high efficiency, small inertia and hence torque to inertia ratio is high, torque to volume ratio is high, maintenance free and ease of control. PMSM are now days a good choice as high performance drives such as robotic...
This paper describes a new technique for simulating the guidance of a SAM (surface to air missile) without the help of a controller. This analysis is fully automated in a closed loop using the features of commercial software MATLAB. The guidance algorithm is simulated with the help of aerodynamic data. Control law is not used for obtaining the desired deflections of the control surfaces rather reverse...
An advanced and versatile member of flexible AC transmission systems (FACTS) controller is interline power flow controller (IPFC). In general, IPFC is used in multiple transmission lines of a power system network. This paper presents a power injection model of IPFC. The power injection model is incorporated in Newton-Raphson (NR) power flow solution method to study the effects of IPFC parameters in...
Hydrogen is considered as an attractive energy source in the 21st century and as a fuel to replace conventional fossil fuels. Apart from being a potential source of unlimited clean power, it is also widely used in the chemical process industries and is likely to become a dominant fuel in the transportation sector. Microbial conversion of biomass is a newly developed and unique process, which involves...
In this work the dynamic properties of the lab stand for tight band coiling are investigated. To inspect the dynamics of the lab stand, the model has been designed by using MATLAB, SIMULINK analyze packages. Mathematical modelling allowed to determine the relationship between the length of the dancer roll loop and tightness of the band, and the coiling speed. As a result the recommendations for the...
This work presents the development of a welding machine MIG/MAG (metal gas inerte/metal active gas) whose exit current is pulsed, the control was developed starting from a simplified mathematical model, what allowed the elaboration of a program of simpler digital control. The mathematical model was based on equivalent circuits of the components of the process. These equivalent circuits allowed to...
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