{"title":"Comparing and evaluating the performance of SSSC with Fuzzy Logic controller and PI controller for transient stability enhancement","authors":"B. Geethalakshmi, A. Saraswathi, P. Dananjayan","doi":"10.1109/IICPE.2006.4685356","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685356","url":null,"abstract":"FACTS (flexible AC transmission systems) technology is one aspect of the power electronics revolution that is taking place in all areas of electric energy. The power transfer capability of a transmission line can be enhanced by the use of power electronics based system like FACTS that offer high speed and reliable control capability. The static synchronous series compensator (SSSC) is the second generation of the FACTS controller, which is used to control the power flow in the transmission line. This paper presents the details of extensive computer simulation of SSSC with a control method based on fuzzy logic technique. For closed loop operation, d-q control algorithm is used for better performance result. In this paper a comparative evaluation of PI controller based and fuzzy logic controller based static synchronous series compensator has been done for a test power system. Sensitivity of these controllers to the load variations is studied in MATLAB/SIMULINK and the simulation results are given.","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126916029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparative study of high performance rectifiers","authors":"A. Muthuramalingam, R. Madhivanan, R. Kalpana","doi":"10.1109/IICPE.2006.4685371","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685371","url":null,"abstract":"Harmonic pollution and low power factor in power systems caused by power converters have been a great concern. To overcome these problems several converters and control schemes have been proposed in recent years. This work is proposed to identify the power converters with low cost/small size/high efficiency for single phase and three phase systems. To study the control technique for such converters to improve the Power Factor (PF) and reduce total harmonic distortion (THD) with output voltage regulation. This work has very high potential for ups, motor drives and other industrial applications. The operation, analysis and design of various control techniques for high performance rectifiers are investigated and verified through simulation. The best converter with best control technique is built and validated practically. The verification has been extended for three phase system also.","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131412635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Zero-current transition flyback inverter for small scale wind power generation systems","authors":"N. Kasa, T. Iida","doi":"10.1109/IICPE.2006.4685337","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685337","url":null,"abstract":"This paper presents a zero-current transition (ZCT) flyback inverter for small scale wind power generation systems. Although the proposed system has such small output power as 500 W, a few sets of wind power generation systems can be easily connected in parallel for the higher output power requirements. When the wind power generation system is constructed by a lot of small power ones, the total system-cost and the efficiency of an inverter will be a matter of concern. To overcome these difficult problems, we propose a speed controller without a wind speed sensor. The speed controller consists of the maximum power point tracking and the two-degree of freedom controller. And we also propose a ZCT flyback inverter and the IGBT is turned off at zero-current switching (ZCS).","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132783923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Speed control of brushless DC motor drive employing hard chopping PWM technique using DSP","authors":"T. Hemanand, T. Rajesh","doi":"10.1109/IICPE.2006.4685404","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685404","url":null,"abstract":"This paper presents the speed control of brushless dc motor drive employing hard chopping PWM technique using TMS320F240 digital signal processor. BLDC is widely used because of its high mechanical power density, simplicity and cost effectiveness. The complete controller for BLDC is developed using TMS 320F240 digital signal processor, which has the special features for digital motor control. The three hall sensor signals are used to sense the rotor position. A shunt resistor is used to sense the actual current entering into the motor. These three hall signals, phase current sensing signal and the speed command are the input to the DSP. Both the outer velocity control loop and inner current control loop uses PI controller that has been implemented by programming in TMS320F240 DSP processor. According to the input command, feedback command and control algorithm, the PWM pulses for each phase generated by the DSP is given to MOSFET driver. The output of the driver is 6 independent PWM pulses that has to be given to the corresponding gate of the six MOSFET power switches used in the three-phase bridge inverter whose output is given to the stator of the BLDC motor.","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134510998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Determination of minimum and maximum capacitances of a self-regulated self-excited single-phase induction generator using a three-phase winding","authors":"S. N. Mahato, Mahendra Pal Sharma, S. Singh","doi":"10.1109/IICPE.2006.4685336","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685336","url":null,"abstract":"This paper presents a simple and direct approach based on eigenvalue and eigenvalue sensitivity method to predict both minimum and maximum values of capacitance required for self-excitation of a single-phase induction generator using a three-phase winding. The generator consists of a three-phase star connected induction machine and three capacitors connected in series and parallel with a single-phase resistive load. The voltage regulation of this generator is very small due to the effect of the series capacitors. Traditionally, the minimum and maximum capacitances required for a self-excited induction generator (SEIG) were solved by a high order non-linear polynomial equation based on a per phase equivalent circuit model. But, the advantage of this proposed method is its simplicity, since the complicated solution procedure of the high order polynomial is avoided. The dynamic model of the three-phase SEIG is developed, based on stationary reference frame d-q axes theory, and the excitation capacitorspsila equations are described by three-phase abc model, assuming constant speed prime-mover. Eigenvalue sensitivity method is used to determine both the minimum and maximum values of the capacitance for self-excitation of the studied SEIG.","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123869571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design and simulation of model based controllers for quasi resonant converters using neural networks","authors":"S. Arulselvi, G. Uma, B. Kalaranjini","doi":"10.1109/IICPE.2006.4685367","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685367","url":null,"abstract":"In this paper, the feasibility of neural modeling and model-based controllers for a non-linear and time varying power converter are investigated. The neural models are developed using dynamic back propagation algorithm. This algorithm is applied to reproduce the dynamic behavior of multi-output flyback ZVS quasi-resonant converter. Based on the developed neural models, inverse control and internal model control (IMC) are developed and their performances are compared through simulation studies. The result reveals that the IMC produces better performance.","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129928920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dynamic analysis and simulation of a VSC based Back-to-Back HVDC link","authors":"A. Tyagi, K. Padiyar","doi":"10.1109/IICPE.2006.4685374","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685374","url":null,"abstract":"This paper presents the modeling and analysis of a voltage source converter (VSC) based back-to-back (BTB) HVDC link. The case study considers the response to changes in the active and reactive power and disturbance caused by single line to ground (SLG) fault. The controllers at each terminal are designed to inject a variable (magnitude and phase angle) sinusoidal, balanced set of voltages to regulate/control the active and reactive power. It is also possible to regulate the converter bus (AC) voltage by controlling the injected reactive power. The analysis is carried out using both d-q model (neglecting the harmonics in the output voltages of VSC) and three phase detailed model of VSC. While the eigenvalue analysis and controller design is based on the d-q model, the transient simulation considers both models.","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124033355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Four switch ZVS DC to DC converter","authors":"M. Vasugi, S. Reddy","doi":"10.1109/IICPE.2006.4685385","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685385","url":null,"abstract":"A new four switch full-bridge dc-dc converter is well suited for power converter operating from high input voltage. It imposes only half of the input voltage across each of the four switches. This topology reduces turn-off switching losses by providing capacitive snubbing and eliminates capacitor-discharge turn-on losses by providing zero-voltage turn-on. Switching losses are important in converters operating at high input voltage because turn-on losses are proportional to the square of the input voltage and turn-off losses are proportional to the input voltage. Switching losses of the devices and the rectifier diodes can be reduced by the addition of an external commutating inductor and two clamp diodes to the full-bridge converter. This topology is suitable for resonant and non-resonant converters.","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124388240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Discrete stationary frame control for a front-end converter","authors":"S. Mohan, J. Losansky, H. Gueldner","doi":"10.1109/IICPE.2006.4685339","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685339","url":null,"abstract":"Discrete stationary reference frame current controllers are described in terms of their closed loop state space representations and their transient performance and stability studied through average model based analysis for L-filter and LCL-filter based Voltage Source Converter (VSC). The stationary reference frame control for the VSC is then verified through simulations for an active filter application with the switching model in Matlab/Simulink.","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124390906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Simulation of simple standalone wind energy system","authors":"S. Gowda, S. Pandian","doi":"10.1109/IICPE.2006.4685392","DOIUrl":"https://doi.org/10.1109/IICPE.2006.4685392","url":null,"abstract":"The main problem with wind power system is that it has to ensure power supply in spite of large variations of power generation caused by the stochastic nature of wind, while maintaining frequency and voltage with in the permissible limits. This paper considers a small scale stand alone wind energy system using Permanent Magnet Generator, which are an important alternative source of electrical energy, finding applications in remote areas where conventional generation is not feasible. A comprehensive closed loop system together with converter-inverter, a battery bank suitable for different load is simulated using Pspice. The voltage variations are caused due to fluctuations in wind speed. The effectiveness of the system in restoring voltage during disturbances are simulated for different loads, with open loop and closed loop system employing error correction with respect to the reference voltage.","PeriodicalId":227812,"journal":{"name":"2006 India International Conference on Power Electronics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127249000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}