Pub Date : 2016-10-01DOI: 10.1109/IAS.2016.7731938
G. Parise, L. Parise, A. Malerba, S. Sabatini, P. Chavdarian, C. Su
Air pollution regulations are forcing ports all over the world to implement Alternative Maritime Power (AMP) solutions to improve the air quality of port areas. At this aim, the port operators have to provide safe and reliable electrical connections to the docked ships. The IEC/ISO/IEEE 80005-1 standard identifies the global criteria that allow ships from all over the world to connect to the compliant ports. As underlined from the standard itself, the electrical connections shore to ship may generate risks, also considering that the interface area between the shore and the ship is a special location for electric shocks. These concerns regard not only the safety of the operators for ground fault interferences causing transferred touch potentials, but also the integrity of the ship itself that may be subjected to a galvanic corrosion. This paper analyzes the current grounding solutions and proposes the adoption of a TN-island system compliant with the international standard that allows reducing the risks for ship's corrosion due to DC currents and transferred touch potentials.
{"title":"High voltage shore connections (HVSC), an IEC/ISO/IEEE 80005-1 compliant solution: The neutral grounding system","authors":"G. Parise, L. Parise, A. Malerba, S. Sabatini, P. Chavdarian, C. Su","doi":"10.1109/IAS.2016.7731938","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731938","url":null,"abstract":"Air pollution regulations are forcing ports all over the world to implement Alternative Maritime Power (AMP) solutions to improve the air quality of port areas. At this aim, the port operators have to provide safe and reliable electrical connections to the docked ships. The IEC/ISO/IEEE 80005-1 standard identifies the global criteria that allow ships from all over the world to connect to the compliant ports. As underlined from the standard itself, the electrical connections shore to ship may generate risks, also considering that the interface area between the shore and the ship is a special location for electric shocks. These concerns regard not only the safety of the operators for ground fault interferences causing transferred touch potentials, but also the integrity of the ship itself that may be subjected to a galvanic corrosion. This paper analyzes the current grounding solutions and proposes the adoption of a TN-island system compliant with the international standard that allows reducing the risks for ship's corrosion due to DC currents and transferred touch potentials.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131460535","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731825
K. Kafalis, A. Karlis
A traction elevator system is analytically simulated in this paper, driven by an induction motor, in order to study possible energy saving modes of operation in terms of returning energy to the DC link of the drive system during regenerating braking with two possible methods, i.e. with supercapacitors or with a Flywheel driven by a permanent magnet motor. The efficiency of the two proposed methods is investigated and useful conclusions are extracted.
{"title":"Comparison of flywheels and supercapacitors for energy saving in elevators","authors":"K. Kafalis, A. Karlis","doi":"10.1109/IAS.2016.7731825","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731825","url":null,"abstract":"A traction elevator system is analytically simulated in this paper, driven by an induction motor, in order to study possible energy saving modes of operation in terms of returning energy to the DC link of the drive system during regenerating braking with two possible methods, i.e. with supercapacitors or with a Flywheel driven by a permanent magnet motor. The efficiency of the two proposed methods is investigated and useful conclusions are extracted.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132303422","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731828
Hussein M. K. Al-Masri, M. Ehsani
This paper investigates the impact of the wind turbine (WT) modeling on a hybrid wind-photovoltaic (PV) system installed in a city in Jordan. A closer look is taken at the parameters affecting the output power to accurately model the system. This helps in monitoring the turbine performance, sizing of the wind farm and the entire hybrid system, which will definitely affect the annual energy extracted (AEE) from a single WT as well as the entire wind turbines (WTs). Also, the cost of the hybrid system such as the net present cost (NPC), the grid operating cost (GOC) and the cost of energy (COE) will be affected. Six WT models are added to Hybrid Optimization Multiple Energy Resources software in order to see the sizing and cost effects of the new system. A step-by-step analysis and design of each proposed WT model and its effects on the hybrid system are presented. Results show that as the WT simplified models change from the cubic, quadratic, toward the linear one, the resulting system has a significant percentage error in the estimation of the cost as well as AEE. Also, the number of WTs increases at the system level till it becomes a wind only configuration in the linear model. But, this is at the penalty of the imprecise sizing solution, which leads to wrong estimates for the project investment. Therefore, the WT has to be modeled accurately by considering many parameters such as the air density, e.g., geographic elevation. The results show that the WT model designed at sea level shows error estimates in both AEE and the system cost from the one designed at actual temperature or elevation above sea level (a.s.l). The simple WT models will not deliver the AEE theoretically calculated. This energy deficit will be substituted by the more expensive on-grid conventional power plant fuel energy. In other words, in order to solve a real problem, the real values for parameters affecting the WT model have to be considered. The same procedure can be applied in other locations around the world.
{"title":"Impact of wind turbine modeling on a hybrid renewable energy system","authors":"Hussein M. K. Al-Masri, M. Ehsani","doi":"10.1109/IAS.2016.7731828","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731828","url":null,"abstract":"This paper investigates the impact of the wind turbine (WT) modeling on a hybrid wind-photovoltaic (PV) system installed in a city in Jordan. A closer look is taken at the parameters affecting the output power to accurately model the system. This helps in monitoring the turbine performance, sizing of the wind farm and the entire hybrid system, which will definitely affect the annual energy extracted (AEE) from a single WT as well as the entire wind turbines (WTs). Also, the cost of the hybrid system such as the net present cost (NPC), the grid operating cost (GOC) and the cost of energy (COE) will be affected. Six WT models are added to Hybrid Optimization Multiple Energy Resources software in order to see the sizing and cost effects of the new system. A step-by-step analysis and design of each proposed WT model and its effects on the hybrid system are presented. Results show that as the WT simplified models change from the cubic, quadratic, toward the linear one, the resulting system has a significant percentage error in the estimation of the cost as well as AEE. Also, the number of WTs increases at the system level till it becomes a wind only configuration in the linear model. But, this is at the penalty of the imprecise sizing solution, which leads to wrong estimates for the project investment. Therefore, the WT has to be modeled accurately by considering many parameters such as the air density, e.g., geographic elevation. The results show that the WT model designed at sea level shows error estimates in both AEE and the system cost from the one designed at actual temperature or elevation above sea level (a.s.l). The simple WT models will not deliver the AEE theoretically calculated. This energy deficit will be substituted by the more expensive on-grid conventional power plant fuel energy. In other words, in order to solve a real problem, the real values for parameters affecting the WT model have to be considered. The same procedure can be applied in other locations around the world.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130888243","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731894
A. Jha, Bhim Singh
This paper presents a Zeta converter fed power factor correction (PFC) for high power light emitting diode (LED) driver. The application is targeted for multiple string red-green-blue (RGB) LED drivers with lumen control. A pulse width modulation (PWM) technique is used for light output control to achieve required light without compromising the efficiency. The Zeta converter is used to feed a bi-flyback DC-DC converter which supplies power to the synchronous buck based constant current switching regulator and PMDC motor required for forced cooling of LED module. The proposed converter designed for discontinuous output inductor current mode for PFC at universal AC mains at entire load regulation. The developed prototype of the proposed LED driver is experimentally verified. The power quality parameters of the proposed LED driver are evaluated at rated and light load conditions for universal AC mains (90-265V) with lumen control. The power quality parameters are measured and found acceptable ranges of international harmonic standard.
{"title":"Zeta converter for power quality improvement for multi-string LED driver","authors":"A. Jha, Bhim Singh","doi":"10.1109/IAS.2016.7731894","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731894","url":null,"abstract":"This paper presents a Zeta converter fed power factor correction (PFC) for high power light emitting diode (LED) driver. The application is targeted for multiple string red-green-blue (RGB) LED drivers with lumen control. A pulse width modulation (PWM) technique is used for light output control to achieve required light without compromising the efficiency. The Zeta converter is used to feed a bi-flyback DC-DC converter which supplies power to the synchronous buck based constant current switching regulator and PMDC motor required for forced cooling of LED module. The proposed converter designed for discontinuous output inductor current mode for PFC at universal AC mains at entire load regulation. The developed prototype of the proposed LED driver is experimentally verified. The power quality parameters of the proposed LED driver are evaluated at rated and light load conditions for universal AC mains (90-265V) with lumen control. The power quality parameters are measured and found acceptable ranges of international harmonic standard.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123840016","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731850
Rajasekharareddy Chilipi, N. A. Sayari, K. Al-Hosani, A. R. Beig
The power electronic converter and its control system form an integral part of distributed generation (DG) systems interfacing renewable energy sources to the utility network. This paper proposes an adaptive notch filter-based multipurpose control scheme for grid interfacing DG inverter under corrupted grid conditions. The proposed control scheme uses a frequency adaptive sequence components extractor which is capable of extracting instantaneous symmetrical components and harmonic components of three-phase signals. The DG inverter in this study consists of three single-phase voltage source inverters with common dc bus and coupled to utility grid via three single-phase transformers. The DG sources are represented as constant dc voltage source on its dc side. The proposed control scheme enables the DG inverter to perform multiple tasks such as: reference power injection to grid, load reactive power support and compensation of harmonic, unbalanced and neutral currents. The effectiveness of the proposed control scheme is evaluated through MATLAB/Simulink simulations and experimentally verified using a hardware-in-the-loop (HIL)-based system.
{"title":"Adaptive notch filter based multipurpose control scheme for grid-interfaced three-phase four-wire DG inverter","authors":"Rajasekharareddy Chilipi, N. A. Sayari, K. Al-Hosani, A. R. Beig","doi":"10.1109/IAS.2016.7731850","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731850","url":null,"abstract":"The power electronic converter and its control system form an integral part of distributed generation (DG) systems interfacing renewable energy sources to the utility network. This paper proposes an adaptive notch filter-based multipurpose control scheme for grid interfacing DG inverter under corrupted grid conditions. The proposed control scheme uses a frequency adaptive sequence components extractor which is capable of extracting instantaneous symmetrical components and harmonic components of three-phase signals. The DG inverter in this study consists of three single-phase voltage source inverters with common dc bus and coupled to utility grid via three single-phase transformers. The DG sources are represented as constant dc voltage source on its dc side. The proposed control scheme enables the DG inverter to perform multiple tasks such as: reference power injection to grid, load reactive power support and compensation of harmonic, unbalanced and neutral currents. The effectiveness of the proposed control scheme is evaluated through MATLAB/Simulink simulations and experimentally verified using a hardware-in-the-loop (HIL)-based system.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"296 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124248835","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731835
M. Rezkallah, S. Sharma, A. Chandra, Bhim Singh
This paper presents an implementation and control of a hybrid standalone power generating system (HSPGS) based on a wind turbine (WT) and a solar-photovoltaic (PV) array. A squirrel cage induction generator (SCIG) is coupled with a WT for electromechanical energy conversion. The frequency and amplitude of voltage at AC bus, as well as, power quality improvement at the point common coupling (PCC) are achieved by controlling the three-leg voltage source converter (VSC) using decoupled nonlinear control algorithm. A battery energy storage system (BESS) is reinforced in the hybrid system to ensure power leveling under wind, solar and load fluctuations. For obtaining the maximum power from a solar PV array and to regulate the output DC voltage, a DC-DC boost converter is controlled using perturbation and observation technique. Moreover, a dump load is tied at DC bus to ensure stability of control and to protect the BESS and solid state switches from overvoltage at DC bus during the period of fully charged battery. The proposed HSPGS and its control algorithms are modeled in MATLAB/Simulink and its performance is tested in real time under presence of balanced/unbalanced, linear/nonlinear loads and change in climate conditions.
{"title":"Implementation and control of small-scale hybrid standalone power generation system employing wind and solar energy","authors":"M. Rezkallah, S. Sharma, A. Chandra, Bhim Singh","doi":"10.1109/IAS.2016.7731835","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731835","url":null,"abstract":"This paper presents an implementation and control of a hybrid standalone power generating system (HSPGS) based on a wind turbine (WT) and a solar-photovoltaic (PV) array. A squirrel cage induction generator (SCIG) is coupled with a WT for electromechanical energy conversion. The frequency and amplitude of voltage at AC bus, as well as, power quality improvement at the point common coupling (PCC) are achieved by controlling the three-leg voltage source converter (VSC) using decoupled nonlinear control algorithm. A battery energy storage system (BESS) is reinforced in the hybrid system to ensure power leveling under wind, solar and load fluctuations. For obtaining the maximum power from a solar PV array and to regulate the output DC voltage, a DC-DC boost converter is controlled using perturbation and observation technique. Moreover, a dump load is tied at DC bus to ensure stability of control and to protect the BESS and solid state switches from overvoltage at DC bus during the period of fully charged battery. The proposed HSPGS and its control algorithms are modeled in MATLAB/Simulink and its performance is tested in real time under presence of balanced/unbalanced, linear/nonlinear loads and change in climate conditions.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123051422","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731892
R. R. Duarte, Guilherme F. Ferreira, M. Costa, José Marcos Alonso Alvarez
Wide bandgap (WBG) semiconductors have emerged as an attractive option for silicon (Si) replacement in the recent years. Among the new materials, gallium nitride (GaN) has been considered as the most promising candidate. This paper presents a comparison between Si and GaN switching devices in a family of synchronous buck converters designed for LED lighting applications. Ten 48 V to 28.3 V at 22.6 W converters were designed under the same parameters at five different switching frequencies, ranging from 100 kHz to 1 MHz. Efficiency and temperatures were recorded in four different scenarios: with and without an external diode in parallel with the low-side switch and for two different dead time values, 25 ns and 50 ns. GaN based converters presented higher efficiency and lower operating temperatures in all the cases, with a maximum efficiency of 96.8% and a minimum of 94.5%. Besides, Si based converters exhibited a higher performance degradation as switching frequency and dead time increase.
{"title":"Performance comparison of Si and GaN transistors in a family of synchronous buck converters for LED lighting applications","authors":"R. R. Duarte, Guilherme F. Ferreira, M. Costa, José Marcos Alonso Alvarez","doi":"10.1109/IAS.2016.7731892","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731892","url":null,"abstract":"Wide bandgap (WBG) semiconductors have emerged as an attractive option for silicon (Si) replacement in the recent years. Among the new materials, gallium nitride (GaN) has been considered as the most promising candidate. This paper presents a comparison between Si and GaN switching devices in a family of synchronous buck converters designed for LED lighting applications. Ten 48 V to 28.3 V at 22.6 W converters were designed under the same parameters at five different switching frequencies, ranging from 100 kHz to 1 MHz. Efficiency and temperatures were recorded in four different scenarios: with and without an external diode in parallel with the low-side switch and for two different dead time values, 25 ns and 50 ns. GaN based converters presented higher efficiency and lower operating temperatures in all the cases, with a maximum efficiency of 96.8% and a minimum of 94.5%. Besides, Si based converters exhibited a higher performance degradation as switching frequency and dead time increase.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124793592","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731924
P. Aqueveque, A. Morales, Francisco Saavedra, E. Pino, E. Wiechmann
Proper control of temperature and electrolyte circulation flow is mandatory in electrolytic cells to produce dense and high-purity cathodes. The electrochemical kinetics of electrolytic processes is inherently dependent on these electrolyte variables. Continuous monitoring of electrolyte condition integrated to operation and housekeeping procedures, allows enhancing cathode quality and electrodeposition time, better utilization of electrolyte additives, and early identification of temperature excursions and electrolyte flow blockages. These abnormal cell conditions can produce excessive evaporation and energy consumption, anode passivation that impair cathode production in copper electrorefining, or safety issues from the production of flammable hydrogen in copper electrowinning. Therefore, the monitoring of changes in temperature and electrolyte flow can give critical indicators of process deviations and providing early warnings to face the wide variability of performance and safety conditions of cells caused by electrolyte condition mismanagement. This paper proposes a non-invasive wireless sensor for the monitoring of the temperature and electrolyte circulation flow estimation through each cell, suitable to highly-corrosive sulfuric acid environments. The condition monitoring sensor design is small size, lightweight, meets battery-free operation and non-sparking safety requirements. It uses an inductive link-based system for powering and a RF link for communicating. The result is a sensor that surpasses the features of standard instrumentation currently used for electrolytic process monitoring.
{"title":"Temperature monitoring of electrolytic cells using wireless battery-free harsh environment sensors","authors":"P. Aqueveque, A. Morales, Francisco Saavedra, E. Pino, E. Wiechmann","doi":"10.1109/IAS.2016.7731924","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731924","url":null,"abstract":"Proper control of temperature and electrolyte circulation flow is mandatory in electrolytic cells to produce dense and high-purity cathodes. The electrochemical kinetics of electrolytic processes is inherently dependent on these electrolyte variables. Continuous monitoring of electrolyte condition integrated to operation and housekeeping procedures, allows enhancing cathode quality and electrodeposition time, better utilization of electrolyte additives, and early identification of temperature excursions and electrolyte flow blockages. These abnormal cell conditions can produce excessive evaporation and energy consumption, anode passivation that impair cathode production in copper electrorefining, or safety issues from the production of flammable hydrogen in copper electrowinning. Therefore, the monitoring of changes in temperature and electrolyte flow can give critical indicators of process deviations and providing early warnings to face the wide variability of performance and safety conditions of cells caused by electrolyte condition mismanagement. This paper proposes a non-invasive wireless sensor for the monitoring of the temperature and electrolyte circulation flow estimation through each cell, suitable to highly-corrosive sulfuric acid environments. The condition monitoring sensor design is small size, lightweight, meets battery-free operation and non-sparking safety requirements. It uses an inductive link-based system for powering and a RF link for communicating. The result is a sensor that surpasses the features of standard instrumentation currently used for electrolytic process monitoring.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124983046","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731848
A. Mishra, Bhim Singh
The present paper describes the solution for cost effective and efficient single stage photovoltaic (PV) generator powered water pumping using a Switched Reluctance motor (SRM). An optimal selection of a perturbation size (ΔD) and an initial duty ratio (D) in incremental conductance (IC) MPPT (Maximum Power Point Tracking) algorithm facilitate soft starting to SRM by building up the voltage across split capacitors of a SRM converter with a reduced rate. The speed of SRM drive is controlled by output maximum power point (MPP) current of PV array. This avoids the current and voltage sensors on motor side. The proposed single stage system is operated under pulse width modulation (PWM) switching of a mid-point converter and gives privileged to reduce the bulky DC link split capacitors with small capacitors. A turn- off angle dependent control algorithm to self start a proposed SRM drive is also introduced in present system. Moreover, the present paper also discussed the details of system design and analysis of its performance under varying environmental conditions. The suitability of proposed system is validated using MATLAB simulation and test results on a hardware prototype.
{"title":"A single stage solar PV array based water pumping system using SRM drive","authors":"A. Mishra, Bhim Singh","doi":"10.1109/IAS.2016.7731848","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731848","url":null,"abstract":"The present paper describes the solution for cost effective and efficient single stage photovoltaic (PV) generator powered water pumping using a Switched Reluctance motor (SRM). An optimal selection of a perturbation size (ΔD) and an initial duty ratio (D) in incremental conductance (IC) MPPT (Maximum Power Point Tracking) algorithm facilitate soft starting to SRM by building up the voltage across split capacitors of a SRM converter with a reduced rate. The speed of SRM drive is controlled by output maximum power point (MPP) current of PV array. This avoids the current and voltage sensors on motor side. The proposed single stage system is operated under pulse width modulation (PWM) switching of a mid-point converter and gives privileged to reduce the bulky DC link split capacitors with small capacitors. A turn- off angle dependent control algorithm to self start a proposed SRM drive is also introduced in present system. Moreover, the present paper also discussed the details of system design and analysis of its performance under varying environmental conditions. The suitability of proposed system is validated using MATLAB simulation and test results on a hardware prototype.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"59 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120886689","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 : 2016-10-01DOI: 10.1109/IAS.2016.7731946
J. Leonard, T. Salem, R. Hadidi, B. Gislason, J. C. Fox, M. McKinney
Utility scale photovoltaic plants often use megawatt scale central inverters with high efficiency and power density. Inverter manufacturers now offer solutions over 2 MW for 1000 V DC class PV arrays. Certifying inverters at this power level can present test equipment design and procurement challenges. This paper describes a retrofit of an existing medium voltage, 9-level TECO Westinghouse VersaBridge series connected H-bridge (SCHB) inverter to supply DC power up to 2500 A at 1000 V for central inverter testing. Simulations in PLECS and controller hardware-in-the-loop experiments with RTDS were used for initial controller design. The SCHB pulse-width modulation scheme led to an interleaved output stage topology in a six parallel module configuration without requiring modification to the existing VersaBridge controller. Commissioning results are shown along with experimental results for the first inverter test article at 2500 A, 900 V.
公用事业规模的光伏电站通常采用兆瓦级的中央逆变器，具有高效率和功率密度高的特点。逆变器制造商现在为1000 V直流级光伏阵列提供超过2兆瓦的解决方案。在这种功率水平下认证逆变器可能会给测试设备的设计和采购带来挑战。本文描述了对现有中压9电平TECO Westinghouse VersaBridge系列连接h桥(SCHB)逆变器的改造，以提供高达2500 a的1000 V直流电源，用于中央逆变器测试。通过PLECS仿真和RTDS硬件在环实验对控制器进行初步设计。SCHB脉宽调制方案在六个并行模块配置中导致交错输出级拓扑，而无需修改现有的VersaBridge控制器。调试结果与第一个逆变器试验件在2500 A, 900 V下的实验结果一起显示。
{"title":"Design and commissioning of 2.5 MW DC supply for evaluating megawatt scale smart solar inverters","authors":"J. Leonard, T. Salem, R. Hadidi, B. Gislason, J. C. Fox, M. McKinney","doi":"10.1109/IAS.2016.7731946","DOIUrl":"https://doi.org/10.1109/IAS.2016.7731946","url":null,"abstract":"Utility scale photovoltaic plants often use megawatt scale central inverters with high efficiency and power density. Inverter manufacturers now offer solutions over 2 MW for 1000 V DC class PV arrays. Certifying inverters at this power level can present test equipment design and procurement challenges. This paper describes a retrofit of an existing medium voltage, 9-level TECO Westinghouse VersaBridge series connected H-bridge (SCHB) inverter to supply DC power up to 2500 A at 1000 V for central inverter testing. Simulations in PLECS and controller hardware-in-the-loop experiments with RTDS were used for initial controller design. The SCHB pulse-width modulation scheme led to an interleaved output stage topology in a six parallel module configuration without requiring modification to the existing VersaBridge controller. Commissioning results are shown along with experimental results for the first inverter test article at 2500 A, 900 V.","PeriodicalId":306377,"journal":{"name":"2016 IEEE Industry Applications Society Annual Meeting","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117126739","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：