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Advances in Power Electronic最新文献

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Adaptive PID Controller Using RLS for SISO Stable and Unstable Systems 基于RLS的SISO稳定与不稳定系统自适应PID控制器
Advances in Power Electronic Pub Date : 2014-10-07 DOI: 10.1155/2014/507142
R. Fahmy, R. Badr, F. A. Rahman
{"title":"Adaptive PID Controller Using RLS for SISO Stable and Unstable Systems","authors":"R. Fahmy, R. Badr, F. A. Rahman","doi":"10.1155/2014/507142","DOIUrl":"https://doi.org/10.1155/2014/507142","url":null,"abstract":"The proportional-integral-derivative (PID) is still the most common controller and stabilizer used in industry due to its simplicity and ease of implementation. In most of the real applications, the controlled system has parameters which slowly vary or are uncertain. Thus, PID gains must be adapted to cope with such changes. In this paper, adaptive PID (APID) controller is proposed using the recursive least square (RLS) algorithm. RLS algorithm is used to update the PID gains in real time (as system operates) to force the actual system to behave like a desired reference model. Computer simulations are given to demonstrate the effectiveness of the proposed APID controller on SISO stable and unstable systems considering the presence of changes in the systems parameters.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130861702","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: 27
Development of Control Structure for Hybrid Wind Generators with Active Power Capability 具有有功功率的混合风力发电机组控制结构的研制
Advances in Power Electronic Pub Date : 2014-09-02 DOI: 10.1155/2014/890945
M. Niroomand, Dongjun Won
{"title":"Development of Control Structure for Hybrid Wind Generators with Active Power Capability","authors":"M. Niroomand, Dongjun Won","doi":"10.1155/2014/890945","DOIUrl":"https://doi.org/10.1155/2014/890945","url":null,"abstract":"A hierarchical control structure is proposed for hybrid energy systems (HES) which consist of wind energy system (WES) and energy storage system (ESS). The proposed multilevel control structure consists of four blocks: reference generation and mode select, power balancing, control algorithms, and switching control blocks. A high performance power management strategy is used for the system. Also, the proposed system is analyzed as an active power filter (APF) with ability to control the voltage, to compensate the harmonics, and to deliver active power. The HES is designed with parallel DC coupled structure. Simulation results are shown for verification of the theoretical analysis.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127430643","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
Fast Hybrid MPPT Technique for Photovoltaic Applications: Numerical and Experimental Validation 光伏应用的快速混合MPPT技术:数值和实验验证
Advances in Power Electronic Pub Date : 2014-06-03 DOI: 10.1155/2014/125918
Gianluca Aurilio, M. Balato, G. Graditi, C. Landi, M. Luiso, M. Vitelli
{"title":"Fast Hybrid MPPT Technique for Photovoltaic Applications: Numerical and Experimental Validation","authors":"Gianluca Aurilio, M. Balato, G. Graditi, C. Landi, M. Luiso, M. Vitelli","doi":"10.1155/2014/125918","DOIUrl":"https://doi.org/10.1155/2014/125918","url":null,"abstract":"In PV applications, under mismatching conditions, it is necessary to adopt a maximum power point tracking (MPPT) technique which is able to regulate not only the voltages of the PV modules of the array but also the DC input voltage of the inverter. Such a technique can be considered a hybrid MPPT (HMPPT) technique since it is neither only distributed on the PV modules of the PV array or only centralized at the input of the inverter. In this paper a new HMPPT technique is presented and discussed. Its main advantages are the high MPPT efficiency and the high speed of tracking which are obtained by means of a fast estimate of the optimal values of PV modules voltages and of the input inverter voltage. The new HMPPT technique is compared with simple HMPPT techniques based on the scan of the power versus voltage inverter input characteristic. The theoretical analysis and the results of numerical simulations are widely discussed. Moreover, a laboratory test system, equipped with PV emulators, has been realized and used in order to experimentally validate the proposed technique.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"516 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116221206","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: 28
Synchronous Current Compensator for a Self-Balanced Three-Level Neutral Point Clamped Inverter 自平衡三电平中性点箝位逆变器的同步电流补偿器
Advances in Power Electronic Pub Date : 2014-04-29 DOI: 10.1155/2014/620607
R. Krishna, Deepak E. Soman, S. K. Kottayil, M. Leijon
{"title":"Synchronous Current Compensator for a Self-Balanced Three-Level Neutral Point Clamped Inverter","authors":"R. Krishna, Deepak E. Soman, S. K. Kottayil, M. Leijon","doi":"10.1155/2014/620607","DOIUrl":"https://doi.org/10.1155/2014/620607","url":null,"abstract":"This paper presents a synchronous current control method for a three-level neutral point clamped inverter. Synchronous reference frame control based on two decoupled proportional-integral (PI) cont ...","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128138794","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
A Dynamic Model for Direct and Indirect Matrix Converters 直接和间接矩阵变换器的动态模型
Advances in Power Electronic Pub Date : 2014-04-08 DOI: 10.1155/2014/864203
M. H. Abardeh, R. Ghazi
{"title":"A Dynamic Model for Direct and Indirect Matrix Converters","authors":"M. H. Abardeh, R. Ghazi","doi":"10.1155/2014/864203","DOIUrl":"https://doi.org/10.1155/2014/864203","url":null,"abstract":"The complicated modulation algorithm and the high switching frequency are two main hindrances in the analysis and simulation of matrix converters (MCs) based systems. To simplify the analysis and accelerate the simulation of MCs, a unique dynamic model is presented for the MC, which is independent of MC type (direct or indirect) and the modulation algorithm. All the input and output variables are transferred to the respective reference frames and their relations and limits are calculated. Based on the proposed equations, an equivalent circuit model is presented which can predict all the direct and indirect matrix converters dynamic and steady state behaviors without the need for small simulation time steps. Validity of the proposed model is evaluated using simulation of the precise model. Moreover, experimental results from a laboratory matrix converter setup are provided to verify the accuracy of the simulation results.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133738301","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
A Torque Discontinuity Free New Hybrid PWM Approach for High Speed Induction Motor Drives 一种无转矩不连续的新型混合PWM高速感应电机驱动方法
Advances in Power Electronic Pub Date : 2014-04-02 DOI: 10.1155/2014/281267
H. Rehman, R. Mahmood, Taimoor Shah
{"title":"A Torque Discontinuity Free New Hybrid PWM Approach for High Speed Induction Motor Drives","authors":"H. Rehman, R. Mahmood, Taimoor Shah","doi":"10.1155/2014/281267","DOIUrl":"https://doi.org/10.1155/2014/281267","url":null,"abstract":"This paper designs a hybrid speed controller in which a Sine Triangle Pulse Width Modulated (SPWM) inverter is used below the base speed and a square wave inverter is employed above the base speed. The two inversion techniques complement each other for their advantages and disadvantages below and above the base speed. This paper proposes a unique strategy for the transition between SPWM and square wave by simply setting the frequency of the carrier signal equal to zero. The proposed methodology in a way uses only one inversion technique and realizes a seamless transition from the SPWM to square wave compared to conventional method in which modes are simply switched from SPWM to square wave and vice versa when the speed changes above and below the base speed, respectively. Computer simulations show that the proposed technique has smoother torque transition and thus a better speed response compared to conventional approach of inverter mode switching around the base speed. The performance of proposed hybrid approach is also validated on a small prototype induction motor through experimental results.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114193713","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
An FPGA Chaos-Based PWM Technique Combined with Simple Passive Filter for Effective EMI Spectral Peak Reduction in DC-DC Converter 基于FPGA混沌的PWM技术与简单无源滤波器相结合，可有效降低DC-DC变换器中的电磁干扰频谱峰值
Advances in Power Electronic Pub Date : 2014-02-24 DOI: 10.1155/2014/383089
S. Natarajan, R. Natarajan
{"title":"An FPGA Chaos-Based PWM Technique Combined with Simple Passive Filter for Effective EMI Spectral Peak Reduction in DC-DC Converter","authors":"S. Natarajan, R. Natarajan","doi":"10.1155/2014/383089","DOIUrl":"https://doi.org/10.1155/2014/383089","url":null,"abstract":"A new and simple but effective electromagnetic interference suppression technique based on field programmable logic array (FPGA) technology to provide a significant EMI noise attenuation in DC-DC converters is discussed. The voltage controlled boost converter for EMI reduction is analyzed using FFT under traditional PWM technique and chaotic mode operation. This technique aids the DC-DC converters to comply in specified EMI limits and replace conventional bulky passive filter with a simple passive filter. A prototype model has been tested and hardware results show significant reduction of EMI in chaotic mode operation of the boost converter.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133988970","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: 11
Simulation to Implementation as Good Practices for Teaching Power Electronics to Undergraduate Students: Fuzzy Sliding Mode Control for DC Motors 从仿真到实作作为电力电子学本科教学的良好实践:直流电机的模糊滑模控制
Advances in Power Electronic Pub Date : 2014-02-24 DOI: 10.1155/2014/697263
P. Cepeda, P. Ponce, A. Molina
{"title":"Simulation to Implementation as Good Practices for Teaching Power Electronics to Undergraduate Students: Fuzzy Sliding Mode Control for DC Motors","authors":"P. Cepeda, P. Ponce, A. Molina","doi":"10.1155/2014/697263","DOIUrl":"https://doi.org/10.1155/2014/697263","url":null,"abstract":"How can students be given experience in the confused realities of engineering processes? How can undergraduate students be convinced that processes can be analyzed and improved? Computer simulations properly designed and applied could answer these challenges revolutionizing education in Power Electronics. In recent years, computer simulation has been commonly used in education to motivate students in their learning and help teachers to improve their teaching level. The present paper focuses on developing a speed controller for DC motors starting from theoretical aspects, passing through simulations, and finally reaching a control prototype. The control theory is based on a nonlinear technique known as Sliding Mode Control (SMC) involving artificial intelligence for optimization such as Fuzzy Logic (FL), Adaptive Neurofuzzy Inference Systems (ANFIS), and Genetic Algorithms (GAs).","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127769514","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: 8
An FPGA Based Controller for a SOFC DC-DC Power System 基于FPGA的SOFC DC-DC电源系统控制器
Advances in Power Electronic Pub Date : 2013-12-28 DOI: 10.1155/2013/345646
K. C. Bhuyan, Sumit Kumar Sao, K. Mahapatra
{"title":"An FPGA Based Controller for a SOFC DC-DC Power System","authors":"K. C. Bhuyan, Sumit Kumar Sao, K. Mahapatra","doi":"10.1155/2013/345646","DOIUrl":"https://doi.org/10.1155/2013/345646","url":null,"abstract":"Fuel cells are an attractive option for alternative power and of use in a variety of applications. This paper proposes a state space model for the solid oxide fuel cell (SOFC) based power system that comprises fuel cell, DC-DC buck converter, and load. In this investigation we have taken up a case study for SOFC feeding a DC load where a DC-DC buck converter acts as the interface between the load and the source. A proportional-integral (PI) controller is used in conjunction with pulse width modulation (PWM) that computes the pulse width and switches the MOSFET at the right instant so that the desired voltage is obtained. The proposed model is validated through extensive simulation using MATLAB/SIMULINK. Controller for the fuel cell power system (FCPS) is prototyped using XC3S500E development board containing a SPARTAN 3E Xilinx FPGA that simplifies the entire control circuit besides providing additional flexibility for further improvement. The results clearly indicate improved performance and validate our proposed model.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123576849","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: 9
Control of DFIG Wind Turbines Based on Indirect Matrix Converters in Short Circuit Mode to Improve the LVRT Capability 基于间接矩阵变换器的DFIG风电机组短路控制提高LVRT性能
Advances in Power Electronic Pub Date : 2013-12-12 DOI: 10.1155/2013/157431
A. Khajeh, R. Ghazi
{"title":"Control of DFIG Wind Turbines Based on Indirect Matrix Converters in Short Circuit Mode to Improve the LVRT Capability","authors":"A. Khajeh, R. Ghazi","doi":"10.1155/2013/157431","DOIUrl":"https://doi.org/10.1155/2013/157431","url":null,"abstract":"Nowadays, the doubly-fed induction generators (DFIGs) based wind turbines (WTs) are the dominant type of WTs. Traditionally, the back-to-back converters are used to excite the rotor circuit of DFIG. In this paper, an indirect matrix converter (IMC) is proposed to control the generator. Compared with back-to-back converters, IMCs have numerous advantages such as higher level of robustness, reliability, and reduced size and weight due to the absence of bulky electrolytic capacitor. According to the recent grid codes wind turbines must have low voltage ride-through (LVRT) capability. In this paper a new crowbar system is proposed so that along with the control system it protects the IMC from large fault currents and supports the grid voltage dips during grid faults. This crowbar system is provided using the existing converter switches to establish a short circuit mode without any extra circuitry. Even in severe fault conditions, the duration of short circuit mode is quite small so the control system will be activated shortly after the fault to inject reactive power as required by new LVRT standards. Therefore, the new LVRT standards are well satisfied without any extra costs. PSIM simulation results confirm the efficiency of the proposed method.","PeriodicalId":412593,"journal":{"name":"Advances in Power Electronic","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127402767","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: 9
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