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2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)最新文献

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Predictive control of multi-input switched-capacitor DC-DC converter with reduced switching Frequency 低开关频率多输入开关电容DC-DC变换器的预测控制
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910386
M. Khosravi, D. Khaburi, S. Heshmatian
{"title":"Predictive control of multi-input switched-capacitor DC-DC converter with reduced switching Frequency","authors":"M. Khosravi, D. Khaburi, S. Heshmatian","doi":"10.1109/PEDSTC.2017.7910386","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910386","url":null,"abstract":"In this paper, a high step-up multi-input switched-capacitor DC-DC converter is studied for hybrid renewable energy system applications. A modified model predictive controller is proposed for this converter in order to appropriately track the reference input currents with minimum number of switching actions. In comparison to the classical PI controllers, which are widely used in this application, the proposed controller provides notable advantages such as elimination of additional modulation stages and improving the dynamic and steady state performance. Moreover, designing PI controllers and tuning their parameters is more difficult for a multi-input converter, compared to a single-input one, since the behaviors of the multi-input converter input currents are not independent. However, the conventional predictive control scheme will result in ripple components due to its variable switching frequency performance. Therefore, some modifications are made in the design procedure to overcome the aforementioned problem of the conventional predictive scheme and improve the converter efficiency. Finally, the performance of the designed controller is verified and compared with the conventional predictive control scheme through simulation in MATLB/Simulink environment.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115927074","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}
引用次数: 7
Nonlinear model predictive control of permanent magnet linear synchronous motor 永磁直线同步电动机的非线性模型预测控制
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910367
Loghman Abdi, N. Rostami, Peyman Bagheri, S. Tohidi
{"title":"Nonlinear model predictive control of permanent magnet linear synchronous motor","authors":"Loghman Abdi, N. Rostami, Peyman Bagheri, S. Tohidi","doi":"10.1109/PEDSTC.2017.7910367","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910367","url":null,"abstract":"Field oriented control (FOC) is considered as one of the most efficient techniques for speed tracking problem of permanent magnet linear synchronous motor (PMLSM) drives. However, the main inherent drawbacks of classic FOC methods are the high sensitivity to machine parameters, high switching frequency and unsuitable performances in tracking low speeds. In this paper, a new strategy based on nonlinear model predictive control (NMPC) is proposed to overcome the limitations of cascaded linear controllers and other problems inherent in classical controllers. The suggested controller directly controls the switches of inverter. In order to show the efficiency of the proposed control strategy, the system response is studied under uncertainty of the motor parameters and load disturbance. To more validations, the intense reduction of inverter switching frequency is studied in compare with well-known FOC scheme. The simulation results show that the proposed approach has as well tracking of speed trajectory under all operating conditions, and simultaneously, it reduces the average inverter switching frequency 90% rather than the classical FOC.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126621667","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}
引用次数: 1
Model-predictive Direct Power Control of three-phase three-level NPC PWM rectifier 三相三电平NPC PWM整流器的模型预测直接功率控制
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910394
Alireza Lahooti Eshkevari, M. Arasteh
{"title":"Model-predictive Direct Power Control of three-phase three-level NPC PWM rectifier","authors":"Alireza Lahooti Eshkevari, M. Arasteh","doi":"10.1109/PEDSTC.2017.7910394","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910394","url":null,"abstract":"This paper presents a model predictive control strategy to control the active and reactive powers for three-phase three-level NPC PWM rectifier directly. This method is based on converter model. It uses voltages and currents of the converter and does not use hysteresis or PI controllers for active and reactive powers control loop. This algorithm is robust against to tolerances of input inductances. It has lower current THD and higher load variation response rate than the conventional DPC strategy. The simulation results in MATLAB/Simulink tool verifies this strategy.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125240983","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}
引用次数: 7
A robust active damping method to improve the parallel operation of micro-inverters in islanded microgrids 一种改善孤岛微电网中微逆变器并联运行的鲁棒主动阻尼方法
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910399
M. Mahdavyfakhr, Saman Dadjo Tavakoli, O. Safdarzadeh, M. Hamzeh
{"title":"A robust active damping method to improve the parallel operation of micro-inverters in islanded microgrids","authors":"M. Mahdavyfakhr, Saman Dadjo Tavakoli, O. Safdarzadeh, M. Hamzeh","doi":"10.1109/PEDSTC.2017.7910399","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910399","url":null,"abstract":"To fully exploit the energy of photovotaic (PV) panels, a sub-module MPPT strategy (known as distributed maximum power point tracking) is extensively utilized in PV systems. This strategy is performed using the micro-inverters which serve as the interfaces of PV panels. Therefore, ac microgrids equipped with large scale PV panels, are expected to be dominated by micro-inverters. This paper investigates the parallel operation of a large number of micro-inverters in islanded microgrids. It is shown that stability of ac microgrids is jeopardized under a high penetration of micro-inverters. This is done using the impedance stability analysis and with the help of pole map of the whole ac microgrid. Moreover, a robust active damping approach is proposed. This approach improves the parallel operation of ac micro-invertes and prevents the instability of ac microgrids. Different simulation scenarios are provided to validate the findings and effectiveness of the proposed active damping approach.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127515395","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}
引用次数: 2
Posicast-based control of a thyristor rectifier equipped with an LCL filter 装有LCL滤波器的晶闸管整流器的posicast控制
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910352
A. Zamani, A. Ghorbani
{"title":"Posicast-based control of a thyristor rectifier equipped with an LCL filter","authors":"A. Zamani, A. Ghorbani","doi":"10.1109/PEDSTC.2017.7910352","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910352","url":null,"abstract":"This paper presents Posicast controller within a feedback loop for transient response improvement of a thyristor rectifier equipped with an LCL filter. The proposed controller reduces the system response oscillations by shaping and delaying the reference input. Furthermore, an integrator is introduced to decreases Posicast controller sensitivity to parameter variations and plant model mismatch. Response of the system for various values of load is examined and simulation results confirm accuracy of the proposed controller.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121163765","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}
引用次数: 1
Improved interleaved high step-up converter with high efficiency for renewable energy applications 用于可再生能源应用的改进型高效交错高升压变换器
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910339
Hossein Shojaeian, M. Heydari, S. Hasanzadeh
{"title":"Improved interleaved high step-up converter with high efficiency for renewable energy applications","authors":"Hossein Shojaeian, M. Heydari, S. Hasanzadeh","doi":"10.1109/PEDSTC.2017.7910339","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910339","url":null,"abstract":"A new super-boost converter, which is appropriate for renewable energy applications, is proposed in this paper. The proposed converter consists of switched capacitors and two coupled inductors. This combination can provide a relatively high voltage boost gain while operating with small duty cycle. The converter can be powered either by one individual DC voltage source in an interleaved manner or two independent DC voltage sources as a multiport converter. The configuration of the proposed converter has advantages such as low power losses, longer lifetime of input sources due to non-pulsating input current, low voltage stress across the main switches and slight output voltage fluctuation. Using this converter, a 22.5 times gain can be reached with 0.6 duty ratio and turns ratio equal to 2 that makes it possible to connect a 20V PV system to a 450V DC bus. Theoretical analysis and simulation results are presented to demonstrate the authenticity of the proposed converter.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129016386","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}
引用次数: 16
A new structure for non-isolated boost dc-dc converter based on voltage-lift technique 一种基于升压技术的非隔离升压dc-dc变换器新结构
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910373
Farzad Mohammadzadeh Shahir, E. Babaei
{"title":"A new structure for non-isolated boost dc-dc converter based on voltage-lift technique","authors":"Farzad Mohammadzadeh Shahir, E. Babaei","doi":"10.1109/PEDSTC.2017.7910373","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910373","url":null,"abstract":"In this paper, a new structure for non-isolated boost dc-dc converter is proposed by applied voltage-lift (VL) technique. The switching of proposed converter is done by pulse width modulation (PWM) method. Then, the behavior of proposed converter in continues current mode (CCM) is explained and the voltage and current relations of each element are extracted. Also, the voltage gain of proposed converter is calculated in CCM. To determine operating mode of proposed converter between CCM and discontinues current mode (DCM), the critical inductance is extracted. The simulation results in PSCAD/EMTDC are confirmed the validity of theoretical concepts.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128758104","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}
引用次数: 22
Sliding mode control of the four quadrant quasi-Z-Source DC-DC Converter 四象限准z源DC-DC变换器的滑模控制
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910376
S. Ahmadzadeh, G. Arab Markadeh, N. Abjadi
{"title":"Sliding mode control of the four quadrant quasi-Z-Source DC-DC Converter","authors":"S. Ahmadzadeh, G. Arab Markadeh, N. Abjadi","doi":"10.1109/PEDSTC.2017.7910376","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910376","url":null,"abstract":"In order to regulate the output voltage in converter system with four-quadrant characteristic a quasi-Z-Source Converter (qZSC) is preferred. The converter can provide bi-directional current and bipolar output voltage with minimal number of elements. In this converter two active switches with complimentary commands and a quasi-Z-source network is required and there is no need to coupled inductors and additional more components. In this paper a reduced order model is proposed to output voltage regulation by means of variable structure control approach. The method employs sliding mode control (SMC) with the converter dynamic model. The proposed SMC approach guarantees stability as well as robustness against input voltage variation, parameters and load resistance uncertainty. In order to demonstrate the capability of the proposed controller, simulation results obtained by PSIM software are presented.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"777 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116415246","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}
引用次数: 4
Elimination of position sensor in direct torque control of brushless trapezoidal axial flux synchronous motor 消除无刷梯形轴向磁通同步电机直接转矩控制中的位置传感器
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910323
Hamed Anisi, D. Arab Khaburi, H. Eshraghi, S. Heshmatian
{"title":"Elimination of position sensor in direct torque control of brushless trapezoidal axial flux synchronous motor","authors":"Hamed Anisi, D. Arab Khaburi, H. Eshraghi, S. Heshmatian","doi":"10.1109/PEDSTC.2017.7910323","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910323","url":null,"abstract":"In this paper, a novel algorithm is proposed in order to direct torque control of axial flux permanent magnet (AFPM) motor without position sensors by using back-EMF. Utilizing back-EMF to estimate the rotor position and speed is one of the few methods that have satisfying performance in low speeds. This method does not require a high speed processor. Capable of controlling the motor over a wide speed range, this method is suitable for hybrid electric vehicles. This method directly controls the wheels and due to its direct performance, it has more efficiency and makes it possible to have a compact circuit. This control method has a relatively quick response to torque variations but the torque ripple is relatively high, which is normal for this method. Moreover, this method is dependent on the machine's internal parameters. Simple implementation and reduced amount of required calculations are the other advantages of the proposed method. The simulation results will verify the proper operation of this algorithm.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115596560","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}
引用次数: 0
Reducing output voltage THD of a three-phase inverter with non-linear load using disturbance observer 利用扰动观测器降低非线性负载三相逆变器输出电压THD
2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC) Pub Date : 1900-01-01 DOI: 10.1109/PEDSTC.2017.7910364
Shahab Valizade Alavi, F. Tahami
{"title":"Reducing output voltage THD of a three-phase inverter with non-linear load using disturbance observer","authors":"Shahab Valizade Alavi, F. Tahami","doi":"10.1109/PEDSTC.2017.7910364","DOIUrl":"https://doi.org/10.1109/PEDSTC.2017.7910364","url":null,"abstract":"Non-linear loads such as rectifiers are growing in industry. Three phase inverter with non-linear load can lead to highly distorted output voltage. This paper proposes a method for reducing voltage THD in three phase inverters with non-linear load. The proposed method considers the load current as a disturbance and provide a control strategy to reject it using the disturbance observer method. This method doesn't need any additional sensors or hardware and is implemented digitally in controller. Simulation results show that the presented method will reduce the total harmonic distortion of the output voltage.","PeriodicalId":414828,"journal":{"name":"2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)","volume":"3710 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127525623","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}
引用次数: 1
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