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Über dieses Buch

This book contains the best papers of the International Conference on Advances in Power Electronics and Instrumentation Engineering, PEIE 2010, organized by the Association of Computer Electronics and Electrical Engineers (ACEEE), during September 7–9, 2010 in Kochi, Kerala, India. PEIE is an international conference integrating two major areas of electrical en- neering – power electronics and instrumentation. Thus this conference reflects a c- tinuing effort to increase the dissemination of recent research results among prof- sionals who work in the areas of power electronics, instrumentation and electrical engineering The program of this joint conference included several outstanding keynote lectures presented by internationally renowned distinguished researchers who are experts in the various PEIE areas. Their keynote speeches have contributed to heightening the ov- all quality of the program and significance of the theme of the conference. I hope that you will find this collection of the best PEIE 2010 papers an excellent source of inspiration as well as a helpful reference for research in the aforementioned areas. Organizing a conference like this one is not possible without the assistance and continuous support of many people and institutions. I thank Stefan Goeller, Janahanlal Stephen, R Vijay Kumar, and Nessy Thankachan for their constant support and gu- ance. I would like to express my gratitude to Springer’s LNCS-CCIS editorial team, especially Leonie Kunz, for producing such a wonderful proceedings book.

Inhaltsverzeichnis

Frontmatter

Full Paper

Novel Design for RF MEMS Capacitive Shunt Switch in K and Ku Bands

A novel design for RF MEMS Capacitive Shunt Switch with operating bandwidth in the K and Ku bands is presented in this paper. The novel MEMS switch has got lower insertion loss than a normal switch and there is no compromise on the isolation and the operating bandwidth of the switch. The resonant frequency of the proposed switch is kept constant near 20GHz which is the midpoint of the bandwidth of the switch. A comparative study of a normal switch and the proposed switch is done. The improvement in design has been achieved by introducing discontinuities in the coplanar waveguide both in the central conductor and the ground planes. The discontinuities are represented in terms of equivalent lumped parameters. A new method of obtaining the lumped parameters of coplanar waveguide step discontinuities in the central conductor and ground planes using full wave electromagnetic simulation is also presented.
Rakesh S. Lal, A. Amalin Prince, Iven Jose

Power System Dynamic Stability Enhancement of SMIB Using Fuzzy Logic Based Power System Stabilizer

The oscillations in the frequency range of 0.2 to 3.0 Hz limit the power transmission capability of a network and, sometimes, even cause a loss of synchronism and an eventual breakdown of the entire system. This paper presents an application of fuzzy logic power system stabilizer (PSS) for dynamic stability enhancement power system. Here speed deviation (Δω) and acceleration (ΔP) of the rotor synchronous generator were taken as the input to the fuzzy logic controller. Depending on these variables, the inference mechanism of the fuzzy logic controller is represented by a (7 × 7) decision table i.e. 49 if-then rules. The performance of the fuzzy PSS is compared with the conventional power system stabilizer (CPSS) and without PSS. The simulations were tested under different operating conditions.
Kamalesh Chandra Rout, P. C. Panda

A Novel Configuration of Unified Power Flow Controller

This paper presents the modeling and design of Unified Power Flow Controller (UPFC) using novel control technique in the inverter. The proposed control technique implements the 150 degree conduction mode of individual IGBTs in the inverter. The UPFC can be operated using PWM controllers to enhance the reactive power compensating and regulating the line voltage and also reduces the harmonic in the transmission line current and voltage. The 150 degree inverter is advantageous and increases the RMS values of output voltages, when compared to 120° mode, and 180° mode. Total required VA rating of the inverters is reduced greatly over wide load conditions. The operating performance of UPFC is demonstrated on Single Machine Infinite Bus (SMIB) system for different case studies. The proposed model considerably improves the system stability by damping the oscillation during the vulnerable conditions.
S. Baskar, N. Kumarappan, R. Gnanadass

New Results on the Global Chaos Synchronization for Liu-Chen-Liu and Lü Chaotic Systems

This paper investigates the global chaos synchronization of two identical Liu-Chen-Liu chaotic systems (2007) and two different chaotic systems, namely, Liu-Chen-Liu chaotic system (2007) and Lü chaotic system (2002). Nonlinear control is an effective method for making two identical chaotic systems or two different chaotic systems synchronized. Since the Lyapunov exponents are not required for the calculations, this method is an effective and convenient to synchronize two identical and different chaotic systems. Numerical simulations are also given to validate the proposed synchronization approach.
Sundarapandian Vaidyanathan, Suresh Rasappan

New Results on the Reduced Order Model Design for the Linear Discrete-Time Control Systems

In this paper, we obtain the reduced order model for the linear discrete-time control systems using the dominant state of the control systems. Using the reduced order model, we derive necessary and sufficient conditions for the observer design of linear discrete-time control systems. Our method essentially uses the model reduction of the original linear control systems.
V. Sundarapandian, M. Kavitha, C. S. Ravichandran

Transient Stability Enhancement of a Multimachine Power System with Admittance Model Static Reactive Power Compensator

In the proposed work, the effectiveness of the power system stabilizer and static var compensator is analyzed. Synchronous machines are represented by detailed flux linkage model. The equations of the interconnecting network are expressed with regards to a synchronously rotating common reference frame. Equations of synchronous machine, voltage regulator and speed governor are solved in Park’s reference frame fixed to the field of each individual machine. It is shown that static reactive-power controller can improve synchronizing and damping torque considerably. The effectiveness of the controllers is demonstrated on a two machine system with a simplified tie line by creating an abnormal operating condition, a 3-phase short circuit. Simulation results are presented at the end of the paper.
Jose P. Therattil, P. C. Panda

PEIE 2010 - Short Paper

Design of Cranial Electrotherapy Stimulator and Analyzing It with EEG

To design a portable low cost Cranial Electrotherapy Stimulator (CES) and to study the corresponding brain activity electrically. The designed stimulator was used as an external trigger and the impact was analyzed using 20 lead EEG electrode system with standard recording protocol. Subjects were tested under this and their corresponding normal and varying EEG with CES were noted. Result showed appreciable variation in the EEG signal when CES evoking potential was connected. The test was carried out for normal subjects in a selected age group. This test should also be done with huge population of diverse age groups and also for abnormal subjects. The results also confirm that this CES could be used in treatment for therapeutic reasons like anxiety, depression, insomnia, and chemical dependency.
Gopalakrishnan Narayanamurthy, Mahesh Veezhinathan

Analysis on Static Voltage Stability Using SVC, STATCOM, TCSC & UPFC

Modern electric power utilities are facing many challenges due to ever increasing complexity in their operation and structure. One problem that received wide attention is voltage instability. One of the major causes of voltage instability in the power system is with its reactive power limit. Voltage instability is the cause of the system voltage collapse, in which the power system voltage decays to a level, from which point, it is unable to recover. Voltage collapse may lead to partial or full power interruption in the system. Providing adequate reactive power support at the appropriate location solves voltage instability problems.
Improving the systems reactive power handling capacity with Flexible AC Transmission System (FACTS) devices is one remedy for prevention of the voltage instability and voltage collapse. In this paper the effect of four FACTS controllers SVC, STATCOM, TCSC and UPFC on voltage stability are studied. The IEEE-14 bus system is simulated with continuation power flow feature of PSAT and accurate model of these controllers for Voltage stability of a test system is investigated.
S. M. Padmaja, G. Tulasiram Das

Torque Ripple Minimization of Permanent Magnet Brushless DC Motor Using Genetic Algorithm

Permanent Magnet Brushless motor DC (PMBLDC) motor is rapidly gaining popularity and are widely used in industries such as aerospace, consumer, medical, industries, automation equipment and instrumentation because of their important characteristic like high power density, Torque-inertia ratio, small size, higher efficiency. One main problem in the PMBLDC motor is the torque ripple which causes undesirable acoustic noise and vibration which affects the overall performance of the machine. The proposed work aims at minimization of torque ripple in PMBLDC motor using Genetic Algorithm (GA). By using L-C Filter ripple is minimized and PID Controller is tuned using GA.
E. Kaliappan, C. Sharmeela

Residential-Scale Solar/Pico-Hydel/Wind Based Hybrid Energy System for Remote Area Electrification

This paper reports an investigation on the economic aspects of stand-alone Solar/Pico-Hydro/Wind Hybrid Energy System (HES) for typical unelectrified houses in a remote area at Pathanpara, Kannur (Dist), Kerala India. Mathematical model of wind/solar/hydel system is developed and it is simulated in MATLAB/SIMULINK platform. A detailed survey is conducted to assess the potential of hydel, solar, wind energy and electricity demand of a typical house at Pathanpara. Various parameters of commercially available renewable generators are collected and performance is evaluated in the developed simulation model in MATLAB. The optimization for unit sizing and source selection is performed for the collected data from the survey using HOMER. The economic analysis of the proposed Hybrid Energy System is carried out and the results are presented in this paper.
S. Kumarvel, S. Ashok

Designing CDMA Modem in FPGA Based on DSSS

In a DS-SS system, each user is assigned a unique code sequence (PN-Sequence) that allows the user to spread the information signal across the assigned frequency band. Signals from the various users are separated at the receiver by cross correlation of the received signal with each of the possible user code sequences. Possible narrow band interference is also suppressed in this process. Because of its advantages, it is used in CDMA systems to assign a unique code to every user. This paper describes the design of CDMA modem in FPGA based on DSSS. 8051 microcontroller & FPGA were linked with rf transmitter/receiver, a acknowledgement was being sent to FPGA once the bit was transmitted/receive by the 8051 microcontroller. At the receiver output of 8051 microcontroller was compared with the threshold levels using a comparator and this provides binary output which is the actually transmitted sequence.
Amit Tripathi, M. S. Korde

Voltage Clamped DC-DC Converter with Reduced Reverse Recovery Current and Switch Voltage Stress

Rectifier reverse-recovery problems cause a significant efficiency reduction as well as severe electromagnetic interference (EMI) in continuous-current-mode (CCM) boost converters. To alleviate these problems, this paper presents a simple and effective solution that involves shifting the original rectifier current to a new branch, which consists of a rectifier and a coupled winding of the boost inductor. A high-efficiency clamped voltage dc–dc converter with reduced reverse-recovery current and switch-voltage stress. In the circuit topology, it is designed by way of the combination of inductor and transformer to increase the corresponding voltage gain. Moreover, one additional inductor provides the reverse-current path of the transformer to enhance the utility rate of magnetic core. In addition, the voltage-clamped technology is used to reduce the switch-voltage stress.
P. Hari Krishna Prasad, Venu Gopala Rao Mannam

Online Monitoring of Available Transfer Capability in Deregulated Power System Using Adaptive Neuro Fuzzy Inference System

In this paper, a novel and an easy approach is proposed for the on-line monitoring of the Available Transfer Capability (ATC), which is a necessary, significant and challenging task in the deregulated power system. The ATC is evaluated with and without contingencies at various load conditions for different load buses, using the conventional method (Repeated Power Flow) and the proposed Adaptive Neuro Fuzzy Inference System (ANFIS). The ANFIS network is trained with the training data of the conventional method and its performance is verified with the checking data. The comparative results of both methods indicate that the trained ANFIS network is best to use in an online environment of deregulated power system, in view of its computational procedure and simplicity in adapting to original system.
P. Gopi Krishna, T. Gowri Manohar, G. N. Srinivas

A Novel Technique for Indication of Power Frequency Deviations in Electrical Systems

In this paper, a method for measuring the power frequency deviations has been pre sented. This technique is based on concept of counting the known train of pulses for the period corresponding to power frequency deviation. It has been simulated on SIMULINK tool of MATLAB and has been duly implemented. The technique is insensitive to harmonic noise due to its ability to filter out all the higher order components. With modest averaging, the approach is also relatively insensitive to offsets and random noise. The simulation results demonstrate a linear relationship between frequency deviation and counted pulses.
Jitendra Dwivedi, M. Shukla, K. S. Verma, R. K. Singh

Novel Auxiliary Switch Very-High-Frequency Zero Current Switching Resonant DC-DC Boost Converter

This paper explores the design of Novel Auxiliary switch dc-dc boost power converter operating in the Very High Frequency range. The main switch and auxiliary switch operate at zero-current-switching (ZCS) turn on and turn off. Besides operating at constant frequency and reducing commutation losses, this new converter have no additional current stress and conduction loss in the main switch in comparison to the hard switching converter counterpart.These methods are applied to the development of a 26W resonant boost converter operating at a switching frequency of 30MHz. Design of power stage, hardware design procedure, simulation result and hardware results are treated in detail. For demonstration, a prototype Novel Auxiliary switch system is designed and implemented with discrete components to deliver 26W peak power with 88.9% of efficiency.
K. Thiruppathi, S. Vinodha, R. Kirubagaran

PEIE 2010 - Poster Paper

Vulnerable Load Bus Identification Using Radial Basis Neural Network

This paper presents a study on effectiveness of artificial neural network in estimating the voltage instability. An ANN model based on radial basis function is designed to predict accurately the voltage collapse phenomenon. In the present study, L-index is used as the voltage collapse proximity indicators. ANN model using radial basis function is trained to identify vulnerable buses in power system which contributes maximally in bringing system to the point of voltage collapse. Modeling is done using a sample 5-bus system and results obtained are quite promising with minimum error in predicting voltage collapse.
Gauri Shankar, Bhavik Suthar, R. Balasubramanian, Prince Ashok

FPGA Based Design of Robust Spatial Domain Image Watermarking Algorithm

The proliferation of digital media creates intimidation towards the security in multimedia data transmission. Watermarking technique becomes a potential solution to this coercion by means of Intellectual Property Right protection, authentication and integrity verification of digital media. As an attempt towards the power efficient system, here we present an oblivious, spatial domain watermarking based authentication algorithm and its FPGA implementation.
Basu Abhishek, Das Tirtha Sankar, Nurul Islam, Sarkar Subir Kumar

A High Performance Direct Torque Control of PMBLDC Motor Using Hybrid (GA Based Fuzzy Logic) Controller

This paper deals with the direct torque control of PMBLDC motor using hybrid (Genetic algorithm based fuzzy logic) controller to improve the performance of the control scheme. Though the conventional controllers are commonly used in practice, they have failed to perform satisfactorily under non linear conditions and parameter variations. In the proposed work, a hybrid controller (using genetic algorithm based fuzzy logic controller) is introduced to control the torque and the flux linkage angle of the PMBLDC motor. Torque error and flux linkage angle of the PMBLDC motor is fuzzified and it is auto tuned by GA to improve the dynamic characteristic. Simulation results of the conventional fuzzy logic controller are compared with the hybrid (GA based fuzzy logic) controller and the later is found to be satisfactory with improved performance.
E. Kaliappan, C. Sharmeela, A. V. Sayee Krishna

Embedded System Design and Real Time Hardware Implementation of OLED Interface Card

The paper discusses about the design and hardware realization of Organic Light Emitting Diode (OLED) interface card with Gap Measuring Device (GMD Mk III) system. The unique feature of this design lies in its being small, lightweight, low power consuming and high brightness/ contrast image. After introduction, the paper elaborates upon the design requirements, hardware design issues, software philosophy through flowchart and finally results and conclusion is given.
Himanshu Singh, Sudhir Khare, Ajay Kumar, S. S. Negi

Frequency Detector Using Piezo Laminated Cantilever Beam

A method to measure the frequency of the signal using piezo laminated cantilever beam is proposed. The frequency is detected from the pattern acquired from the sensor output. Electronics for the sensor is built using microcontroller 89C51 and is found to respond over a range of 3-35Hz with a resolution of 1mHz. The sensor is also simulated using COMSOL Multi physics software. The proposed method is simple and it does not consume power from the measurand.
B. V. M. P. Santhosh Kumar, U. Varun Kumar, K. Suresh, G. Uma, M. Umapathy

IMC Based PID Controller Tuning for Unstable SOPDT Processes

In this paper, PID tuning formulas are derived for unstable second order plus dead time (SOPDT) processes based on IMC principle. To achieve smooth output response, even in the presence of measurement noise, a first order low pass filter is inserted in the process output. Second order low pass filter used in this design reduces the effect of process-model mismatch and thus improves the performance. Examples from previous works are included for comparison, and results confirm the improvement in the disturbance rejection.
V. K. Singh, P. K. Padhy, S. K. Jain

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