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Brushless dc (BLDC) motors are very popular and are replacing brush motors in numerous applications due to its superior electrical and mechanical characteristics owing to its trouble free construction. This paper presents the BLDC motor sensorless speed control system with fuzzy logic implementation. The sensorless techniques based on the back EMF sensing and the rotor position detection with a high...
In this paper, a modified cascaded H-bridge multilevel inverter (MLI) is proposed and designed for solar applications. Generally, as the level of conventional multilevel inverter increases, the required number of switches and size increases. The proposed topology is cascade of unit stages which involves 5 switches and two voltage source; moreover a unit stage is capable of generating 5 levels. Also,...
In current scenario in electric power systems, customer participation of Demand Response in grid operations and management has been gaining importance in Smart Grid with the advent of information communication technology. In this paper an Automatic Generation Control (AGC) scheme that includes price based demand response scheme is proposed. The price based demand response scheme finds the optimal...
Classification of mutually class image plays most important role in different engineering and computer vision application. Some important fields where these types of classification technique are widely used include image processing in medical, robotics based on classification, pattern recognition. Successful image classification is very challenging task especially when image database is very large...
The difficulty in identifying project sites for installing new hydel power plants or thermal power plants has given a big push for micro power plants particularly near the loads (DIstributed Generation). The paper proposes the selection a suitable small scale industry, base on a few criteria, which can harness solar energy and convert it to electrical energy. The design which is in-line with the load...
Cloud Computing propounds a striking option for business to pay only for the resources that were consumed. The prime challenge is to increase the MapReduce clusters to minimize their costs. MapReduce is a widely used parallel computing framework for large scale data processing. The major concern of map reduce programming model are job execution time and cluster throughput. Multiple speculative execution...
As the power demand is increasing, the PV based microgrid has the important role to full fill the demand of energy today. In PV based microgrid, PV inverter is used to convert dc to ac with novel pulse width modulate control. A PWM is well known and powerful control technique for analog circuits. In this paper, we are discussing about inverter with neural network control to convert dc to 3-Phase ac...
Higher switching frequency increases the performance of converters. Recently Developing semiconductors are capable of operating at higher switching frequencies. This paper presents a three phase AC/DC inverter operated at 1MHz switching frequency. Increasing frequency reduces the inverter size. Study of various digital PWM controllers are performed and found that SVPWM technique is more suitable for...
This paper explicates about engendering higher voltage levels using hybrid cascaded multilevel inverters for elimination of triplen harmonics. As multilevel inverters are unanimously endorsed for the reduction of harmonics and also for the total harmonic reduction for generating premium output waveforms with discrete frequency and minimized switching losses. With such characteristic advantages it...
In this proposed project a new efficient bridgeless Cuk rectifier is used for Power factor correction (PFC). It has only two semiconductor switches in the current flowing path. During each interval of the switching cycle it result in less conduction losses and an improved thermal management compared to the conventional Cuk PFC rectifier. To achieve almost unity power factor and low total harmonic...
This paper presents Parallel Voltage Sourced Inverters to improve the efficiency in high current applications. Generally when two inverters are paralleled, they have unmatching currents flowing between them and to reduce that, we go for inductors. These inductors reduces the circulating currents flowing between the inverters and these currents are produced by common mode voltage differences between...
The paper presents a novel method to measure the volume of a fetus from ultrasonic sound image using image processing technique. Even though Ultrasonic image are poor in diagnostic quality and highly noise susceptible, they are preferred for the reason that Ultrasound imaging techniques were the safest for diagnosing pregnant women fetus, since they are almost free from hazardous radiation. Edge enhancement...
The aim of this paper is to design a double controller scheme for autonomous tuning of set-point tracking response and disturbance rejection response. Thus it improve the three performance attributes of control loop include set-point tracking response, disturbance rejection response and robustness. The proposed scheme provides additional flexibility for reducing the noise due to actuator chattering...
Bioreactor is one of the prime processing units widely employed to produce important chemical and biochemical compounds. In this paper, a hybrid heuristic algorithm has been attempted to tune PID controller for nonlinear Bioreactor model. The hybrid algorithm is a combination of Bacterial Foraging Optimization (BFO) and Particle Swarm Optimization (PSO) algorithm. Multiobjective performance indexes...
Multipliers play a key role in today's digital signal processing and various other applications. With advances in technology, many researchers have tried and are trying to design multipliers which offer either of the following design targets — high speed, low power consumption, regularity of layout and hence less area or even combination of them in one multiplier thus making them suitable for various...
An implementation of iterative joint detection for multiple access interference using direct-sequence code division multiple access is presented. Results for multiple field programmable gate array (FPGA) and multiple technology nodes for synthesized application specific integrated circuits (ASIC) are presented. The joint detection is based on iterative cancellation known as partition spreading (PS)...
A new decoder architecture for nonbinary low-density parity check (LDPC) codes is presented in this paper to reduce the hardware operational complexity and power consumption. Adaptive message control (AMC) is to achieve the low decoding complexity, that dynamically trims the message length of belief information to reduce the amount of memory accesses and arithmetic operations. A new horizontal nonbinary...
This paper presents the design and analysis of spiral antenna for wearable application. The operating frequency of the spiral antenna directly depends on the length of the spiral. The proposed antenna has operating frequency range from 0.65 GHz to 1.49 GHz. The antenna exhibits Omni-directional radiation pattern in both E-plane and H-plane with the gain ranging from 3.02 dB to 6.82 dB. Simulation...
Mode of Scheduling plays the key role in Grid Scheduling. It is of two types, immediate and batch mode. Immediate mode takes one by one task in a sequence. But the batch mode takes in a random sequence. So, task assignment is mainly based on the mode selection. The task may be assigned to the resource as soon as arrive or in a batch. In this paper, we have introduced a new mode of heuristic called...
DNA steganography is one of the emerging technologies in the field of covert data transmission. In this paper we are proposing a novel DNA based steganography which uses images as primary cover media. A theoretical single stranded DNA (ssDNA) or oligonucleotide is extracted from the image which is used as the secondary cover providing a huge amount of background noise for the secret data. This is...
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