Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980662
V. Valouch, J. Skramlik, Z. Muller, J. Svec, J. Tlustý
An analytical solution in a closed form of the B4 converter working with a proposed optimized half a period switching symmetry is presented. The proposed switching strategy provides a good current tracking capability and minimum switching frequency. The analytical solution may be applied for the B4 converter connected to highly unbalanced grids. The method enables to analyze quickly B4 converter current responses in steady states for different grid filter topologies.
{"title":"Optimized half a period switching symmetry applied at grid connected four-switch converter and analytical solution of steady states","authors":"V. Valouch, J. Skramlik, Z. Muller, J. Svec, J. Tlustý","doi":"10.1109/EPEPEMC.2014.6980662","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980662","url":null,"abstract":"An analytical solution in a closed form of the B4 converter working with a proposed optimized half a period switching symmetry is presented. The proposed switching strategy provides a good current tracking capability and minimum switching frequency. The analytical solution may be applied for the B4 converter connected to highly unbalanced grids. The method enables to analyze quickly B4 converter current responses in steady states for different grid filter topologies.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115096562","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}
Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980711
D. Llano, R. McMahon
This paper presents a robust sensorless control scheme to control a permanent magnet generator associated with a wind turbine emulator test-rig. A Sliding mode controller was used for speed tracking regardless the wind speed profile used in the emulator. Two sensorless estimation algorithms, Sliding mode observer and extended Kalman filter, were implemented to calculate the rotor position and speed. This sensorless control is perfectly suited for high performance and low cost small scale wind turbines. Simulation and experimental verification on the emulator test-rig are given. Also, a discrete time observer was demonstrated to estimate the wind torque.
{"title":"Sensorless control for permanent magnet generators associated with a wind turbine emulator test-rig","authors":"D. Llano, R. McMahon","doi":"10.1109/EPEPEMC.2014.6980711","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980711","url":null,"abstract":"This paper presents a robust sensorless control scheme to control a permanent magnet generator associated with a wind turbine emulator test-rig. A Sliding mode controller was used for speed tracking regardless the wind speed profile used in the emulator. Two sensorless estimation algorithms, Sliding mode observer and extended Kalman filter, were implemented to calculate the rotor position and speed. This sensorless control is perfectly suited for high performance and low cost small scale wind turbines. Simulation and experimental verification on the emulator test-rig are given. Also, a discrete time observer was demonstrated to estimate the wind torque.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128584780","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}
Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980565
D. Foito, M. Guerreiro, V. Fernão Pires
The objective of this paper is to present a centrifugal pump control system driven by a single-phase induction motor (SPIM) that is supplied by a photovoltaic generator. The study system consists of a PV array, a DC/DC converter, a DC/AC converter and a single-phase AC motor. The DC/DC converter is controlled in order to ensure the maximum power of the PV array. For the maximum power point tracking (MPPT) it is used the classical perturb and observe. In order to control the flow of the centrifugal pump a controller based on a diametrical inversion (DI) of the stator voltage is proposed. All the components of the system are implemented, modeled and simulated using the program Matlab/Simulink. The obtained results show the effectiveness and validity of the proposed control system.
{"title":"Single-phase induction motor controller for photovoltaic powered water pump","authors":"D. Foito, M. Guerreiro, V. Fernão Pires","doi":"10.1109/EPEPEMC.2014.6980565","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980565","url":null,"abstract":"The objective of this paper is to present a centrifugal pump control system driven by a single-phase induction motor (SPIM) that is supplied by a photovoltaic generator. The study system consists of a PV array, a DC/DC converter, a DC/AC converter and a single-phase AC motor. The DC/DC converter is controlled in order to ensure the maximum power of the PV array. For the maximum power point tracking (MPPT) it is used the classical perturb and observe. In order to control the flow of the centrifugal pump a controller based on a diametrical inversion (DI) of the stator voltage is proposed. All the components of the system are implemented, modeled and simulated using the program Matlab/Simulink. The obtained results show the effectiveness and validity of the proposed control system.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134152488","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}
Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980572
M. Nasir, M. F. Zia
This paper presents a novel algorithm for tracking the true maximum power point (MPP) for a photovoltaic (PV) system under partial shading conditions using variable step size. At uniform irradiance, due to nonlinear VI characteristics of PV array, there exists a unique MPP at which the solar array produces the maximum output power. However, under partial shading conditions, there exist multiple peaks on VI and PV characteristics that give rise to local and global MPP's. In order to obtain the optimum output, global MPP must be tracked via an intelligent algorithm capable of distinction between local and global maximum power points. Further, the proposed algorithm must be robust and exhibiting fast response to ambient conditions. In this paper, a Photovoltaic system is explicitly modeled and by modifying the existing Perturbation and Observation (P&O) algorithm, a robust, optimized and efficient algorithm for the global maximum power point tracking (GMPPT) is formulated. The proposed algorithm is an extension of commonly used P&O method in which variable step size ensure fast convergence to GMPPT and power measurement of the PV array avoids false readings. Simulation results show that the newly formed algorithm has a greater degree of accuracy at constant and varying changing irradiance level under partial shading.
{"title":"Global maximum power point tracking algorithm for photovoltaic systems under partial shading conditions","authors":"M. Nasir, M. F. Zia","doi":"10.1109/EPEPEMC.2014.6980572","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980572","url":null,"abstract":"This paper presents a novel algorithm for tracking the true maximum power point (MPP) for a photovoltaic (PV) system under partial shading conditions using variable step size. At uniform irradiance, due to nonlinear VI characteristics of PV array, there exists a unique MPP at which the solar array produces the maximum output power. However, under partial shading conditions, there exist multiple peaks on VI and PV characteristics that give rise to local and global MPP's. In order to obtain the optimum output, global MPP must be tracked via an intelligent algorithm capable of distinction between local and global maximum power points. Further, the proposed algorithm must be robust and exhibiting fast response to ambient conditions. In this paper, a Photovoltaic system is explicitly modeled and by modifying the existing Perturbation and Observation (P&O) algorithm, a robust, optimized and efficient algorithm for the global maximum power point tracking (GMPPT) is formulated. The proposed algorithm is an extension of commonly used P&O method in which variable step size ensure fast convergence to GMPPT and power measurement of the PV array avoids false readings. Simulation results show that the newly formed algorithm has a greater degree of accuracy at constant and varying changing irradiance level under partial shading.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134241260","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}
Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980698
Y. Nishida, S. Motegi
A novel Current-Fed-Type low voltage dc to single-phase ac power converter system is proposed in this paper. The converter consists of a low voltage dc power source, a buck dc-dc converter, a single-phase current-fed PWM inverter and an ac load. One small size dc inductor is shared with the two converters. A Predictive Instantaneous Control and a Pulse Integral Value based PWM are applied so that a sinusoidal ac output voltage with fast response and smoothed dc source current are obtained with a compact power circuit. The power circuit topology, operating principle, implementation of the controller/PWM, simulation studies to confirm the validity of the theory are presented in the paper.
{"title":"A novel low voltage DC to single-phase AC power converter","authors":"Y. Nishida, S. Motegi","doi":"10.1109/EPEPEMC.2014.6980698","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980698","url":null,"abstract":"A novel Current-Fed-Type low voltage dc to single-phase ac power converter system is proposed in this paper. The converter consists of a low voltage dc power source, a buck dc-dc converter, a single-phase current-fed PWM inverter and an ac load. One small size dc inductor is shared with the two converters. A Predictive Instantaneous Control and a Pulse Integral Value based PWM are applied so that a sinusoidal ac output voltage with fast response and smoothed dc source current are obtained with a compact power circuit. The power circuit topology, operating principle, implementation of the controller/PWM, simulation studies to confirm the validity of the theory are presented in the paper.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134480828","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}
Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980537
Cem Morkoc, Y. Onal, M. Kesler
This study presents a Digital Signal Processor (DSP) based embedded code generation which is obtained automatically in PSIM software for Permanent Magnet Synchronous Motor (PMSM) control system. The simulation model of the PMSM control system is developed in PSIM environment using Motor Control Blocks and Embedded Target for TI 28335 block. This control block diagram is send to SimCoder to generate C-code that is ready to run on the DSP hardware, SimCoder also creates the complete project files for the TI Code Composer Studio development environment where the code will be compiled, linked, and uploaded to the DSP using High Voltage Motor Control-PFC Kit. So, embedded code generation provides a very quick way to design a motor drive system from user specifications also programming greatly simplifies the generation, prototyping and modification of DSP based design, thus decreasing the development cycle time.
{"title":"DSP based embedded code generation for PMSM using sliding mode controller","authors":"Cem Morkoc, Y. Onal, M. Kesler","doi":"10.1109/EPEPEMC.2014.6980537","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980537","url":null,"abstract":"This study presents a Digital Signal Processor (DSP) based embedded code generation which is obtained automatically in PSIM software for Permanent Magnet Synchronous Motor (PMSM) control system. The simulation model of the PMSM control system is developed in PSIM environment using Motor Control Blocks and Embedded Target for TI 28335 block. This control block diagram is send to SimCoder to generate C-code that is ready to run on the DSP hardware, SimCoder also creates the complete project files for the TI Code Composer Studio development environment where the code will be compiled, linked, and uploaded to the DSP using High Voltage Motor Control-PFC Kit. So, embedded code generation provides a very quick way to design a motor drive system from user specifications also programming greatly simplifies the generation, prototyping and modification of DSP based design, thus decreasing the development cycle time.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132774759","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}
Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980644
A. Nadjah, B. Kadri, M. Sellam, Z. Guettatfi, A. Beddraoui
Renewable energy solutions are becoming increasingly popular, solar power is one of the most powerful renewable energy. Maximizing power output from a solar system is desirable to increase efficiency. There are three major approaches for maximizing power extraction in solar systems. They are sun tracking, maximum power point (MPP) tracking or both. Sun tracking systems are of several types, depending on the number of rotation axes we can find one-axis or dual axis sun tracker. The aim of this work is to present a new and efficient design of a microcontroller operated two-axis sun tracker which is driven only by one motor. The interests of this design deals with the low cost of realisation and low power consumption in the additional electronic board.
{"title":"New design of dual axis sun tracker with DSPIC microcontroller","authors":"A. Nadjah, B. Kadri, M. Sellam, Z. Guettatfi, A. Beddraoui","doi":"10.1109/EPEPEMC.2014.6980644","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980644","url":null,"abstract":"Renewable energy solutions are becoming increasingly popular, solar power is one of the most powerful renewable energy. Maximizing power output from a solar system is desirable to increase efficiency. There are three major approaches for maximizing power extraction in solar systems. They are sun tracking, maximum power point (MPP) tracking or both. Sun tracking systems are of several types, depending on the number of rotation axes we can find one-axis or dual axis sun tracker. The aim of this work is to present a new and efficient design of a microcontroller operated two-axis sun tracker which is driven only by one motor. The interests of this design deals with the low cost of realisation and low power consumption in the additional electronic board.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133319141","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}
Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980577
K. Salah
High performance 3D TSV interconnects are important for reliability, choice of the filler material is also a critical issue as thermal incompatibility, electromigration and, high resistivity are still a bottleneck. In this paper, SW-CNT bundles as a prospective filler material for TSV are investigated compared to conventional filler materials like Cu, W, and poly-silicon. It is found that SW-CNT bundles exhibit unique electrical, thermal, and mechanical characteristics that can be used to fabricate better TSV interconnects.
{"title":"Characterization of SWCNT-based TSV","authors":"K. Salah","doi":"10.1109/EPEPEMC.2014.6980577","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980577","url":null,"abstract":"High performance 3D TSV interconnects are important for reliability, choice of the filler material is also a critical issue as thermal incompatibility, electromigration and, high resistivity are still a bottleneck. In this paper, SW-CNT bundles as a prospective filler material for TSV are investigated compared to conventional filler materials like Cu, W, and poly-silicon. It is found that SW-CNT bundles exhibit unique electrical, thermal, and mechanical characteristics that can be used to fabricate better TSV interconnects.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116816506","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}
Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980581
Jorge Claro, Bruno Dias, Bruno Rodrigues, J. Pimentão, Pedro A. C. Sousa, S. Onofre
Surveillance systems are in constant development and its dependence of humans although dwindling, it is still significant. On the other hand a constant evolution and adaptation of robots to perform tasks traditionally performed by humans it is also been witnessed. Using the advantage of these fields an architecture and a protocol to facilitate the integration of an autonomous robot as active agent in a surveillance system is proposed. The proposed work merge developments made in two research projects, DVA and ServRobot.
{"title":"Autonomous robot integration in surveillance system: Architecture and communication protocol for systems cooperation","authors":"Jorge Claro, Bruno Dias, Bruno Rodrigues, J. Pimentão, Pedro A. C. Sousa, S. Onofre","doi":"10.1109/EPEPEMC.2014.6980581","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980581","url":null,"abstract":"Surveillance systems are in constant development and its dependence of humans although dwindling, it is still significant. On the other hand a constant evolution and adaptation of robots to perform tasks traditionally performed by humans it is also been witnessed. Using the advantage of these fields an architecture and a protocol to facilitate the integration of an autonomous robot as active agent in a surveillance system is proposed. The proposed work merge developments made in two research projects, DVA and ServRobot.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121785435","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}
Pub Date : 2014-12-11DOI: 10.1109/EPEPEMC.2014.6980592
S. Halász
In ultra high speed ac drives the ratio of the carrier frequency to fundamental one can be lower than 20-30. For this low inverter switching frequency all the possible discontinuous PWM methods are investigated and it is observed that dc components and subharmonics of carrier-based natural and regular PWMs can have considerable negative effect on the quality of the drive. The investigation and the computation of different discontinuous PWM showed that the dc components and the subharmonic voltage have the lowest values for PWM with 60°clamping to DC bar and the worst situation is related to 60°clamping to DC bar with 30° lagging clamp as well as to 30° clampine. The computation results are confirmed by experiments.
{"title":"Discontinuous carrier-based PWM with low switching frequency","authors":"S. Halász","doi":"10.1109/EPEPEMC.2014.6980592","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2014.6980592","url":null,"abstract":"In ultra high speed ac drives the ratio of the carrier frequency to fundamental one can be lower than 20-30. For this low inverter switching frequency all the possible discontinuous PWM methods are investigated and it is observed that dc components and subharmonics of carrier-based natural and regular PWMs can have considerable negative effect on the quality of the drive. The investigation and the computation of different discontinuous PWM showed that the dc components and the subharmonic voltage have the lowest values for PWM with 60°clamping to DC bar and the worst situation is related to 60°clamping to DC bar with 30° lagging clamp as well as to 30° clampine. The computation results are confirmed by experiments.","PeriodicalId":325670,"journal":{"name":"2014 16th International Power Electronics and Motion Control Conference and Exposition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122061668","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}
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