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Three phase grid interfaced solar water pumping system 三相并网界面太阳能抽水系统
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310425
Utkarsh Sharma, Chinmay Jain, Bhim Singh
{"title":"Three phase grid interfaced solar water pumping system","authors":"Utkarsh Sharma, Chinmay Jain, Bhim Singh","doi":"10.1109/NPEC.2017.8310425","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310425","url":null,"abstract":"This paper presents a new topology for a three phase grid interfaced solar water pumping system. An induction motor driven pump is fed from the solar PV array and a three phase grid using a Vienna converter. The novelty of the proposed system lies in the operation of the pump at rated water discharge when it is operated with the support of the grid. The Vienna converter serves the purpose of power flow from the grid. Moreover, it also improves the power quality at the AC mains. The proposed system is well suited for the areas where the grid support is available. The induction motor is controlled using the open loop scalar (volts/Hertz) control on account of its simple implementation with reduced sensors. Based on the availability of the power source, the modes of operation are identified and performance of the system at starting, in steady state and dynamic conditions are simulated. Simulated results show the satisfactory performance of the proposed system.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129657300","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
A split source boost switched capacitor multilevel inverter for low power applications 用于低功率应用的分源升压开关电容多电平逆变器
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310444
Pinjala Mohana Kishore, R. Bhimasingu
{"title":"A split source boost switched capacitor multilevel inverter for low power applications","authors":"Pinjala Mohana Kishore, R. Bhimasingu","doi":"10.1109/NPEC.2017.8310444","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310444","url":null,"abstract":"A split source boost switched capacitor multi-level inverter (SBSCMI) is proposed in this paper for low power applications. The SBSCMI is derived from the flying capacitor multi-level inverter and switched capacitor structure for achieving step-up dc-ac conversion. With these special composite structure, the no. of devices in the proposed SBSCMI are less as compared to conventional multilevel inverter. In this topology few switches are operated under line voltage frequency, results in reduction of switching losses. Because of switched capacitor operation, SBSCMI provides a voltage gain of 1.5 time to input voltage with a reduced switching voltage stress. The modified phase opposition and disposition sinusoidal pulse width modulation method is used as a control strategy for SBSCMI. With this control, the capacitor voltages are self-balanced and quality of output waveforms are improved significantly. The proposed SBSCMI is validated using MATLAB/simulink and the effectiveness of this topology is compared with existing topologies in aspects of power quality, device count, size of passive elements, voltage gain, switching stress and power losses.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130826280","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: 5
Optimization based selective harmonic elimination in multi-level inverters 基于优化的多电平逆变器选择性谐波消除
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310479
N. Sahu, N. Londhe
{"title":"Optimization based selective harmonic elimination in multi-level inverters","authors":"N. Sahu, N. Londhe","doi":"10.1109/NPEC.2017.8310479","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310479","url":null,"abstract":"Multilevel inverters (MLIs) are getting popular in high power application due to its inherent characteristics of minimal switching losses due to low switching frequency. There are various techniques available for reduction of harmonics. However, minimizing the total harmonic distortion in multilevel inverters as well as the elimination of selected harmonic order using conventional methods do not yield promising results. Therefore, authors have adopted optimization based approach for elimination of 5th, 7th and 11th order harmonics of 9 level inverter. A novel Sine cosine optimization technique has introduced in this work. Further, Newton Raphson method and Sine-Cosine algorithm is compared. According to simulation results, it has been found that the proposed technique yields significantly better selected harmonics reduction with low THD.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128427051","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
Implementation of matrix converter for standalone power supplies employing induction generator system 采用感应发电机系统的独立电源矩阵变换器的实现
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310463
Sumedha Mahajan, S. Senthilkumar, N. Kumaresan, N. A. Gounden, Borru Devendra Varma
{"title":"Implementation of matrix converter for standalone power supplies employing induction generator system","authors":"Sumedha Mahajan, S. Senthilkumar, N. Kumaresan, N. A. Gounden, Borru Devendra Varma","doi":"10.1109/NPEC.2017.8310463","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310463","url":null,"abstract":"This paper proposes, an experimental study on the stand-alone Induction Generator-Matrix Converter (IG-MC) System supplying AC loads. A three phase AC excitation capacitor bank is connected at the stator terminals of the Induction Generator (IG) to provide the necessary reactive power support for the stand-alone operation of IG. A new simple closed loop control algorithm has been developed and implemented using dSPACE 1103 real time controller board for the variable speed driven IG-MC System. The enhanced Venturini Pulse Width Modulation (PWM) approach is used for generating the gating pulses for the MC under varying generator voltage and frequency conditions. The closed loop controller maintains the desired constant voltage and frequency at the AC load terminals of the MC with the varying nature of prime mover speed and loads. The structure and implementation of the proposed system have been completely described, also modelled and simulated in the MATLAB using the Simulink. Test results of the developed prototype of Capacitor Excited Induction Generator (CEIG) — MC system supplying stand-alone AC loads are also presented to validate the successful working of the closed loop controller and usefulness under the varying nature of speed.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120896334","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
Detection and quantification of degradation using time constant of PV voltage 利用PV电压时间常数检测和定量劣化
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310440
R. Nitheesh, B. Kumar, M. Chakkarapani, G. S. Ilango, C. Nagamani
{"title":"Detection and quantification of degradation using time constant of PV voltage","authors":"R. Nitheesh, B. Kumar, M. Chakkarapani, G. S. Ilango, C. Nagamani","doi":"10.1109/NPEC.2017.8310440","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310440","url":null,"abstract":"The extreme environmental operating conditions and aging of the modules may lead to degradation of the photo-voltaic (PV) module. Due to degradation, there is a considerable change in the series and shunt resistance of the PV module equivalent circuit and also diminishes the output power. This paper proposes a method to detect the degradation based on the transient characteristics of the oscillations in the module output voltage that occur under steady state conditions. The transient characteristics such as rise time and time constant for different series and shunt resistance is non-identical. In this paper, a parameter called time constant is used to quantify the degradation. The proposed method is verified by a simulation and is tested experimentally to prove its worthiness.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131231658","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
Power management in a ST integrated medium voltage grid ST集成中压电网的电源管理
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310449
V. Hrishikesan, Chandan Kumar
{"title":"Power management in a ST integrated medium voltage grid","authors":"V. Hrishikesan, Chandan Kumar","doi":"10.1109/NPEC.2017.8310449","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310449","url":null,"abstract":"High penetration of distributed generation (DG) sources result in bidirectional power flow and conventional power transformer (CPT) based microgrid experiences lack of controllability features in terms of real and reactive power flow between multiple feeders. This, in turn leads to voltage rise or fall depending upon different DG operating scenarios. This paper focus on the performance improvement in a smart transformer (ST) based medium voltage (MV) microgrid with DG connected multiple feeders. The ST capability for integrating battery energy storage system (BESS) is utilized to control the power flow in a multi-feeder distribution system.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129263014","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
Heat sink design procedure for a solar battery charger 太阳能电池充电器的散热器设计程序
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310433
P. Bharadwaj, V. John
{"title":"Heat sink design procedure for a solar battery charger","authors":"P. Bharadwaj, V. John","doi":"10.1109/NPEC.2017.8310433","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310433","url":null,"abstract":"Advancements in the field of power electronics with exponentially growing applications requires systems to be highly efficient as well as compact. Increased power density of systems requires efficient heat transfer from semiconductor devices to the ambient. Thermal design of the system is one of the main deciding factors for reliability and therefore optimum heat sink design is required. In this work a novel heat sink is designed and tested at rated power conditions. Different heat sink designs are evaluated using thermal simulations by application of SOLIDWORKS and ANSYS tools. Thermal imaging of the heat sink under actual experimental conditions validates the design. Method for heat sink design of any arbitrary shape, for maximum heat extraction, is also presented in this paper. The designed aluminium heat sink weighs merely 500 gm and can dissipate upto 100 W of power with forced air convection by using a 3 W fan, while offering less than 0.3oC/W of thermal resistance.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116978417","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
Design concept of a high power high frequency power supply for feeding 500 kV, 100 mA cockcroft-walton generator 为500kv, 100ma的cockcroft-walton发电机供电的大功率高频电源的设计概念
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310445
A. Chakraborty, Ashok Mankani
{"title":"Design concept of a high power high frequency power supply for feeding 500 kV, 100 mA cockcroft-walton generator","authors":"A. Chakraborty, Ashok Mankani","doi":"10.1109/NPEC.2017.8310445","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310445","url":null,"abstract":"This paper presents a basic design concept and simulation of a 106 kVA high-power high-frequency (HPHF) power supply for feeding a transformer coupled symmetrical Cockcroft — Walton (CW) voltage multiplier producing 500 kV, 100 mA as the rated output for particle accelerators. Key technology includes high power converter with single-phase inverter that runs at 20 kHz and yields voltage of low THD and maximum dv/dt of 2 kV/ μs to prevent partial discharge in the transformer. The HPHF system is designed for varying the rated output voltage of 500 kV from 5% to 100 % of its value and to restrict the voltage rise time below 100 ms. At first, the Cockcroft-Walton circuit is simulated and its output parameters are obtained. Then, the simulation results of the designed HPHF system supplying the CW circuit has been presented and compared with design theory.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125613989","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
Single stage PV array fed synchronous reluctance motor drive 单级光伏阵列馈电同步磁阻电机驱动
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310462
A. Varshney, Bhim Singh
{"title":"Single stage PV array fed synchronous reluctance motor drive","authors":"A. Varshney, Bhim Singh","doi":"10.1109/NPEC.2017.8310462","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310462","url":null,"abstract":"In this paper, a simple and robust solar photovoltaic array (PV) based synchronous reluctance motor (SyRM) driven water pumping system is proposed. Generally, in conventional PV array fed water pumping system, a DC-DC converter is used for maximizing the PV array and a voltage source inverter (VSI) for converting the DC power in to AC power, however in the proposed system, only a VSI is used for optimizing the PV array power as well as controlling the SyRM. Elimination of one power conversion stage i.e. DC-DC converter in the proposed single stage SPV array powered water pumping system driven by leads to cost reduction, simplicity and an increase in the efficiency. In the proposed system, a SyRM is selected for propelling the centrifugal pump because of its simple control, robustness and higher efficiency than other AC motors. Rotor currents are absent in SyRM, which makes core losses zero in the rotor. It makes the drive control intelligible in comparison to an induction motor and permanent magnet motors. Thus the use of SyRM for driving the pump and elimination of one power conditioning stage, provide a unique solution for solar powered water pumping system. The field oriented control is used for controlling the SyRM. The behaviour of the proposed topology is analysed through the simulated results of the model developed in MATLAB under steady state and transient conditions.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129541366","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
Real-time AC transmission line emulation with power electronic converters 电力电子变换器的实时交流传输线仿真
2017 National Power Electronics Conference (NPEC) Pub Date : 2017-12-01 DOI: 10.1109/NPEC.2017.8310467
S. Dutta, K. Basu
{"title":"Real-time AC transmission line emulation with power electronic converters","authors":"S. Dutta, K. Basu","doi":"10.1109/NPEC.2017.8310467","DOIUrl":"https://doi.org/10.1109/NPEC.2017.8310467","url":null,"abstract":"Advanced real-time power system analysis and testing demands accurate replication of the actual power system network in a lab-scale test-bed. Development of a programmable AC transmission line emulator becomes necessary for setting up such a representative power system network. Replacing a transmission line with an emulator involves — solving the exact transmission line model in real-time and controlling the emulator to follow the solved model. We present here a method of implementing the emulator using power electronic converters. Moreover, a numerical scheme for solving a distributed parameter long transmission line in an embedded platform has also been presented. Finally, relevant simulation and experimental results have been shown that validate the proposed emulation scheme.","PeriodicalId":125885,"journal":{"name":"2017 National Power Electronics Conference (NPEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134608730","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
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