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Thiruthani, India

Balasundaram G.,St Peters University | Arumugam S.,GRT Engineering College | Dinakaran C.,Sri Venkateswara College of Engineering
International Journal of Applied Engineering Research | Year: 2015

This paper focuses on the implementation of the voltage balancing problem of DC capacitors in cascade inverters for power quality conditioners. Model for charge and discharge processes of DC capacitor is established based on the point of output pulses of H-bridge inverters. In analyzing model, a novel capacitor voltage balancing method is proposed. The capacitor voltage balance scheme is achieved by shifting the switching patterns (PSPWM). The developed model has been applied to power quality conditioner and simulation results at each capacitor are observed. It proposes a novel capacitor voltage balance control technique with closed loop harmonic compensation for the cascaded multilevel inverter used in high Active Power Filter (APF). This method maintains capacitor voltage balance and good filtering performances which suitable for Power filter based on more level cascaded inverters. The performance of the proposed system is verified by Simulation using MATLAB/SIMULINK Environment. © Research India Publications. Source

Balasundaram G.,St Peters University | Arumugam S.,GRT Engineering College
ARPN Journal of Engineering and Applied Sciences | Year: 2015

This paper exposes a single phase five level inverter for PV scheme with a new pulse width modulation control scheme. The inverter capability is used to five steps of producing voltages (Vdc/2, Vdc, 0, -Vdc/2,-Vdc) from the input voltage. Maximum Power Point Tracking (MPPT) was implemented in Photovoltaic's system along Fuzzy controller. The excepted scheme was proved over simulation along with carryout in a model. © 2006-2015 Asian Research Publishing Network (ARPN). Source

Balasundaram G.,St Peters University | Arumugam S.,GRT Engineering College | Dinakaran C.,Sri Venkateswara College of Engineering
Journal of Chemical and Pharmaceutical Sciences | Year: 2015

This paper objective is to propose a modern cascaded nine level inverter topology for a nearly sinusoidal output voltage and reduce total harmonic distortion. This topology is designed based on novel PWM technique and one voltage source is desired. This structure is quiet and easy to extended higher level but also its gate driver circuits are required because the number of active switches is reduced. The modified inverter is efficient of generating nine level of output-voltage levels (Vdc, 3Vdc/4, Vdc/2, Vdc/4, 0,-Vdc,-3Vdc/4,-Vdc/2,-Vdc/4) from the DC supply voltage. Finally the performance of the proposed system is evaluated through simulation MATLAB/SIMULINK, PROTEUS Software and experimental results. Source

Prasath M.,Manonmaniam Sundaranar University | Muthu S.,Sri Venkateswara College of Engineering | Balaji R.A.,GRT Engineering College
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2013

(Figure Presented) The FT-IR and FT-Raman spectrum of 7-chloro-2- methylamino-5-phenyl-3H-1, 4-benzodiazepine-4-oxide (7CMP4BO) has been recorded in the region 4000-400 and 4000-100 cm-1 respectively. The optimized geometry, Thermodynamic properties, NBO, Molecular Electrostatic Potentials, PES, frequency and intensity of the vibrational bands of 7CMP4BO were obtained by the ab initio HF and density functional theory (DFT), B3LYP/6-31G (d,p) basis set. The molecule orbital contributions were studied by using the total (TDOS), partial (PDOS), and overlap population (OPDOS) density of states. The harmonic vibrational frequencies were calculated and the scaled values have been compared with experimental FT-IR and FT-Raman spectra. A detailed interpretation of the vibrational spectra of this compound has been made on the basis of the calculated potential energy distribution (PED). The linear polarizability (α) and the first order hyperpolarizability (β) values of the investigated molecule have been computed using DFT quantum mechanical calculations. The observed and the calculated frequencies are found to be in good agreement. The experimental spectra also coincide satisfactorily with those of theoretically calculated values. © 2013 Elsevier B.V. All rights reserved. Source

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