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Conference proceedings front matter may contain various advertisements, welcome messages, committee or program information, and other miscellaneous conference information. This may in some cases also include the cover art, table of contents, copyright statements, title-page or half title-pages, blank pages, venue maps or other general information relating to the conference that was part of the original...
This work is focused on design, analysis and implementation of current mode controlled, quad-output flyback converter. The design of proposed converter illustrates the achievement of tight line, load and cross regulation by using post regulators. The proposed converter is operated at a switching frequency of 100 KHz. The UC1846 PWM controller is used which has features of pulse by pulse current limiting...
This paper proposes a two phase interleaved high step-up DC-DC converter. The interleaved structure helps to achieve reduced current ripple at the input side. The voltage gain is extended by using diode-capacitor pair and a coupled inductor with appropriate turns ratio. During turn-OFF condition, the voltage spikes appearing across the switch are reduced by using a passive lossless clamp circuit....
This paper proposes a new pwm generation scheme for the three phase five level cascaded multilevel inverter. The main objective of this paper to improve the power quality by using various multi-carrier pwm methods. Generally multi-carrier-based methods have been used widely for switching of multilevel inverters due to their simplicity, flexibility and reduced computational requirements compared to...
In this paper a simplified Centre aligned Space Vector Pulse Width Modulation (SVPWM) using voltage dispersion is proposed for a two-level n-phase inverter having odd number of phase. The conventional SVPWM algorithm for calculating the dwell time requires Clarke transformation, sector identification, identification of large and middle vectors in each sector and assigning dwell time to it. In the...
Inverter dead-time, which is meant for safe commutation of devices is known to induce sub-harmonic oscillations in lightly-loaded induction motor drives operating in open-loop. This paper presents an experimental procedure to determine whether a given motor drive would exhibit such oscillations, and if yes, the region of such oscillatory behaviour. In particular, this paper presents case studies on...
Solar Photovoltaic (PV) exploitation is a significant renewable energy source. The energy converted directly from sunlight through PV panel is not steady due to different solar intensity. Maximum power point tracking (MPPT) is used extract maximum power from the solar panel, high-performance soft computing techniques can be used as a maximum power point tracking techniques. This paper proposes fuzzy...
Particle Swarm Optimization (PSO) technique has been applied for multi-junction solar cell system. The solar panels are made up of different materials and give constant output from Boost converter. The main aim of PSO is to find out duty cycle to the Boost converter to maintain constant output voltage irrespective of power produced by solar panels. A detailed simulation of the proposed method has...
Multi-level (ML) converters, now a day's seems to be one of the finest solutions for the DC-to-AC power conversion in the high power high-voltage applications like HVDC transmission system as well as in medium power medium-voltage applications such as renewable energy system. ML converters uses at least three or more voltage levels (steps) in order to modulate the output ac voltage, which leads to...
The effect of non-idealities of a high frequency class D amplifier on it's output voltage is analysed. Firstly individual non-idealities like dead time, MOSFET body-diode drop, MOSFET ON-State drop, finite turn-on and turn-off time, series resistance of inductor and capacitor of output stage filter are taken one at a time and their effect on output voltage is analysed. Then effect of all of these...
A Pulse density modulation scheme is proposed for generating firing pulses to the voltage source inverter of a STATCOM. A three phase two level inverter is used as voltage source inverter. The capacitor voltage of inverter is maintained at a constant value. In pulse density modulation scheme all firing pulses have constant width but the number of pulses to the inverter switches varies. Space vector...
This paper Firefly Algorithm is used as evolutionary technique for the best assignment of flexible AC transmission systems (FACTS) is a unified system. Reactive Power load taken base to 125% base loading and the system presence with FACTS devices. The lines and buses recognized to connect the FACTS devices using New Voltage Stability Index (NVSI). FACTS devices along with reactive generation of generators...
In modern era of power systems, generation, transmission and distribution is well operated and maintained to satisfy the demand and supply management. Various problems are faced every day in all the power system areas. One among the problems faced in all the high voltage electrical equipment's is grounding. Natural grounding is done using charcoal and salt to maintain the less resistance in the grounding...
With increasing interest in energy management in industries, the process of energy auditing has become convoluted. At present, there are no efficient tools to aid the non-value adding energy auditing. This paper presents a tool which will assuage the sophistication in addressing this major segment. Proposed energy auditing process is structured based on Energy Value Stream Mapping (EVSM) techniques...
In this proposed paper presents an innovative method to solve the economic dispatch problem with the solar energy system using particle swarm optimization technique (PSO). The solar radiations are considered on an hourly basis while we are considering for a day in PSO technique. The solar radiation depends on the standard environmental conditions and the total power output from the PV generator is...
In this paper, economic and Emission dispatch process engross operation of generating amenities to generate power at low cost associated with the emission reduction. It also gratifies the system constraints such as load and boundary conditions. In this emission is abridged by generator scheduling. The occurrence of air pollutants such as SO2, NOx, and CO2 cause impacts on environment and also well...
This paper presents a chemical reaction based (CRO) algorithm to solve the short-term hydrothermal scheduling (STHS) problem. Due to the use of different non-linear problem variables, the Hydrothermal System is very complicated. The main objective of the STHS is to determine the optimal hourly schedule of power generation for different hydrothermal power system for certain intervals of time to minimize...
Unlike Single objective optimization Multi objective optimization has the major advantage of selecting the control variables with the help of Pareto front. The objectives considered in this paper are cost of generation, transmission losses and L-index. Weighted summation method is taken as the technique for Multi objective Optimization Optimal Power Flow (MOOPF) with and without FACTS. Whereas Particle...
This paper proposes the photovoltaic generator MATLAB/Simulink model. This paper modifies the one diode photovoltaic cell equations as the PV generator equations. These PV generator equations use the Simulink blocks for forming the photovoltaic generator MATLAB/Simulink model. The model accepts variable irradiance and temperature and various generator specifications such as number of modules connected...
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