Pub Date : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9909481
Tapas Haalder
In this paper, wind turbine of the wind mills extracts green energy from windy sites. So, the kinematics and dynamics of the wind turbines crack the challenging issues of the wind power harvesting how to capitalize the momentum of the wind. The dynamical characteristics and maximum wind power harvesting techniques of the wind turbines are both validated by the software simulations wherein a number of empirical equation and some algorithm are both included for its aerodynamic modeling, evaluations and huge green power managements. The streamline motion of the wind is seriously shrewd for the reliable wind power generation, utilization and decarbonization of the power grids of the power markets as cost effective solution and objective of the paper
{"title":"Modelling and Simulation of Wind Turbine for The Wind Power Harvesting","authors":"Tapas Haalder","doi":"10.1109/SeFeT55524.2022.9909481","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9909481","url":null,"abstract":"In this paper, wind turbine of the wind mills extracts green energy from windy sites. So, the kinematics and dynamics of the wind turbines crack the challenging issues of the wind power harvesting how to capitalize the momentum of the wind. The dynamical characteristics and maximum wind power harvesting techniques of the wind turbines are both validated by the software simulations wherein a number of empirical equation and some algorithm are both included for its aerodynamic modeling, evaluations and huge green power managements. The streamline motion of the wind is seriously shrewd for the reliable wind power generation, utilization and decarbonization of the power grids of the power markets as cost effective solution and objective of the paper","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128842153","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 : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9909329
Harshit Sharma, C. N. Bhende, P. Sekhar
Due to various serious environmental concerns, it is strongly recommended to produce electricity using large-scale photovoltaic (PV) plants. However, such PV sources must provide frequency support similar to conventional synchronous generators. In this paper, frequency regulation is enabled through deloaded PV. Deloaded PV keeps part of its available power as reserve which can be utilized during frequency disturbances. In order to deal with varying operating conditions such as load/solar insolation change and to utilize PV units with different ratings, a fuzzy-based adaptive deloading control is proposed in this work. It is established that proposed fuzzy-based scheme reduce the oscillations and overshoot in frequency response during the dynamic operating conditions. Moreover, the proposed control enables the PV units to operate as dispatchable sources similar to conventional generators. The extensive simulation results are presented in support of the proposed controller.
{"title":"Enhancement in Frequency Response Capability of Grid Connected Photovoltaic System","authors":"Harshit Sharma, C. N. Bhende, P. Sekhar","doi":"10.1109/SeFeT55524.2022.9909329","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9909329","url":null,"abstract":"Due to various serious environmental concerns, it is strongly recommended to produce electricity using large-scale photovoltaic (PV) plants. However, such PV sources must provide frequency support similar to conventional synchronous generators. In this paper, frequency regulation is enabled through deloaded PV. Deloaded PV keeps part of its available power as reserve which can be utilized during frequency disturbances. In order to deal with varying operating conditions such as load/solar insolation change and to utilize PV units with different ratings, a fuzzy-based adaptive deloading control is proposed in this work. It is established that proposed fuzzy-based scheme reduce the oscillations and overshoot in frequency response during the dynamic operating conditions. Moreover, the proposed control enables the PV units to operate as dispatchable sources similar to conventional generators. The extensive simulation results are presented in support of the proposed controller.","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"25 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122318721","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 : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9909229
Aakash Singh, V. Siva, S. Singh, Avneet Kumar
Step-up converters with high voltage conversion ratio are applicable in photovoltaics, uninterrupted power supply (UPS), fuel cell system. This article presents a step-up converter based on quasi-Z-source switched-capacitor (QZSSC) network. Fewer number of component are connected in such a manner to achieve high step-up voltage gain. Operating principle, device stress and design equations are included in this paper. Furthermore, in MATLAB, the QZSSC network is simulated in continuous conduction mode (CCM), and a voltage control loop based PI controller is designed to improve the converter stability. Finally, laboratory prototype is built and experimental results are presented to verify the theoretical analysis.
{"title":"Quasi-Z-Source based Step-up Converter for Fuel Cell Vehicle","authors":"Aakash Singh, V. Siva, S. Singh, Avneet Kumar","doi":"10.1109/SeFeT55524.2022.9909229","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9909229","url":null,"abstract":"Step-up converters with high voltage conversion ratio are applicable in photovoltaics, uninterrupted power supply (UPS), fuel cell system. This article presents a step-up converter based on quasi-Z-source switched-capacitor (QZSSC) network. Fewer number of component are connected in such a manner to achieve high step-up voltage gain. Operating principle, device stress and design equations are included in this paper. Furthermore, in MATLAB, the QZSSC network is simulated in continuous conduction mode (CCM), and a voltage control loop based PI controller is designed to improve the converter stability. Finally, laboratory prototype is built and experimental results are presented to verify the theoretical analysis.","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126036349","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 : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9909095
A. Nanda, V. Narayanan, Bhim Singh
This paper presents a double-stage solar photovoltaic (PV) and battery energy storage (BES)-based three-phase microgrid in grid-interfaced (GI) and standalone (SA) modes. The battery is connected to a separate voltage source converter (VSC) through a bidirectional converter (BDC) and DC link capacitor. The VSC connected to the solar PV array always operates in current control mode. The VSC connected to the battery operates in current control when the microgrid is interfaced to the utility grid; else, it operates in voltage control mode. The battery-VSC unit operates as grid forming inverter in SA mode. A sparse variable step size least mean square (SVSSLMS) algorithm is used to estimate load current’s active fundamental weight to obtain improved power quality.
{"title":"A Dual Inverter Configuration for PV-BES Based Microgrid in GI and SA Modes","authors":"A. Nanda, V. Narayanan, Bhim Singh","doi":"10.1109/SeFeT55524.2022.9909095","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9909095","url":null,"abstract":"This paper presents a double-stage solar photovoltaic (PV) and battery energy storage (BES)-based three-phase microgrid in grid-interfaced (GI) and standalone (SA) modes. The battery is connected to a separate voltage source converter (VSC) through a bidirectional converter (BDC) and DC link capacitor. The VSC connected to the solar PV array always operates in current control mode. The VSC connected to the battery operates in current control when the microgrid is interfaced to the utility grid; else, it operates in voltage control mode. The battery-VSC unit operates as grid forming inverter in SA mode. A sparse variable step size least mean square (SVSSLMS) algorithm is used to estimate load current’s active fundamental weight to obtain improved power quality.","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116632210","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 : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9908917
M. Faizan, A. Tariq
The Packed U-Cell (PUC) inverter now has a new mode of operation is presented in this work. The PUC five levels inverter is a switching inverter that is integrated into the process, is designed using a sensor-free voltage control system that uses redundant switching states. The Voltage control without sensors maintains half the voltage of the DC source on the DC capacitor, resulting in a minimal harmonic distortion symmetric five-level voltage waveform at the output. The suggested converter’s voltage regulator with no sensors simplifies the control system’s complexity, making it suitable for industrial applications. The introduced sensor-less technology is being used in a grid-connected application PUC5In order to inject real and reactive power into the grid with a changeable power factor from the inverter, an external current controller was employed, The PUC auxiliary DC bus, on the other hand, is controlled solely by a sensor free controller and a new switching scheme. The proposed PUC5 inverter’s simulation results in grid-connected and stand-alone operation modes demonstrate the sensor free voltage control’s a quick response time and good dynamic performance in achieving the necessary DC capacitor voltage balance.
{"title":"Design Single Phase Five Level Packed U-Cell Inverter For Standalone and Grid Connected Modes","authors":"M. Faizan, A. Tariq","doi":"10.1109/SeFeT55524.2022.9908917","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9908917","url":null,"abstract":"The Packed U-Cell (PUC) inverter now has a new mode of operation is presented in this work. The PUC five levels inverter is a switching inverter that is integrated into the process, is designed using a sensor-free voltage control system that uses redundant switching states. The Voltage control without sensors maintains half the voltage of the DC source on the DC capacitor, resulting in a minimal harmonic distortion symmetric five-level voltage waveform at the output. The suggested converter’s voltage regulator with no sensors simplifies the control system’s complexity, making it suitable for industrial applications. The introduced sensor-less technology is being used in a grid-connected application PUC5In order to inject real and reactive power into the grid with a changeable power factor from the inverter, an external current controller was employed, The PUC auxiliary DC bus, on the other hand, is controlled solely by a sensor free controller and a new switching scheme. The proposed PUC5 inverter’s simulation results in grid-connected and stand-alone operation modes demonstrate the sensor free voltage control’s a quick response time and good dynamic performance in achieving the necessary DC capacitor voltage balance.","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125241653","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 : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9909071
Kowstubha Palle, Sushmitha Vattikonda, Sai Srujan Vangala, Kavya Tammali, A. Bhanuchandar, A. Mohandas
For single phase Cascaded H-Bridge (CHB)-Multilevel Inverter (MLI) topology, a generalized modulation technique without carrier signals have been implemented in this paper. When considering symmetric source arrangement, the CHB architecture typically necessitates a greater number of cells/units and segregated DC sources to provide higher levels of output and increasing the cost need. An asymmetric source arrangement with fewer modules and segregated DC sources is described in the literature to produce greater level output. The CHB-topology delivers 27 and 19 levels of output with only three modules and three DC sources by considering trinary (1:3:9) and quasi-linear (1:2:6) source configurations. Most control approaches requires high switching frequency carrier signals and states to decoder arrangement in order to provide a specific level output. However, the proposed control technique does not require states to decoder and carrier signals then reducing control complexity and computational strain on the processor. This control approach also produces less Total Harmonic Distortion (THD) then the filtering requirements are minimal. It is well suitable for an asymmetric source configuration of CHB-MLI topology without aid of high switching frequency carrier signals. The PLECS platform is used to validate the operation and proposed control mechanism.
{"title":"A Generalized Non-Carrier Modulation Technique for an Asymmetric Source Configuration of Single-Phase CHB-MLI Topology Using PLECS Tool","authors":"Kowstubha Palle, Sushmitha Vattikonda, Sai Srujan Vangala, Kavya Tammali, A. Bhanuchandar, A. Mohandas","doi":"10.1109/SeFeT55524.2022.9909071","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9909071","url":null,"abstract":"For single phase Cascaded H-Bridge (CHB)-Multilevel Inverter (MLI) topology, a generalized modulation technique without carrier signals have been implemented in this paper. When considering symmetric source arrangement, the CHB architecture typically necessitates a greater number of cells/units and segregated DC sources to provide higher levels of output and increasing the cost need. An asymmetric source arrangement with fewer modules and segregated DC sources is described in the literature to produce greater level output. The CHB-topology delivers 27 and 19 levels of output with only three modules and three DC sources by considering trinary (1:3:9) and quasi-linear (1:2:6) source configurations. Most control approaches requires high switching frequency carrier signals and states to decoder arrangement in order to provide a specific level output. However, the proposed control technique does not require states to decoder and carrier signals then reducing control complexity and computational strain on the processor. This control approach also produces less Total Harmonic Distortion (THD) then the filtering requirements are minimal. It is well suitable for an asymmetric source configuration of CHB-MLI topology without aid of high switching frequency carrier signals. The PLECS platform is used to validate the operation and proposed control mechanism.","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115170371","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 : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9908844
Sumit Kumar, Bhim Singh
This paper presents a solar-PV battery powered PMSM drive for light electric vehicle (LEV) application based on quasi-PR controller with feed forward phase locked loop (FF-PLL). Generally, for medium and high-speed range, back- EMF methods are used. A novel observer based on quasi-PR controller with FF-PLL is utilized for rotor position estimation. This observer is simple in structure and helps to reduce the chattering in the estimated back-EMF. In addition to this, to get maximum power from the roof-top solar PV panel of an EV is a big challenge. An improved variable step MPPT technique is used for getting peak power from rooftop solar PV panel. This algorithm improves the accuracy as well as tracking speed by adapting the step size after each iteration based on the maximum power point position. The obtained results validate the effectiveness of this method for EV application.
{"title":"A Modified Back EMF Observer Based Sensorless PV Array-Battery fed PMSM Drive for LEV with Improved INC Based MPPT Algorithm","authors":"Sumit Kumar, Bhim Singh","doi":"10.1109/SeFeT55524.2022.9908844","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9908844","url":null,"abstract":"This paper presents a solar-PV battery powered PMSM drive for light electric vehicle (LEV) application based on quasi-PR controller with feed forward phase locked loop (FF-PLL). Generally, for medium and high-speed range, back- EMF methods are used. A novel observer based on quasi-PR controller with FF-PLL is utilized for rotor position estimation. This observer is simple in structure and helps to reduce the chattering in the estimated back-EMF. In addition to this, to get maximum power from the roof-top solar PV panel of an EV is a big challenge. An improved variable step MPPT technique is used for getting peak power from rooftop solar PV panel. This algorithm improves the accuracy as well as tracking speed by adapting the step size after each iteration based on the maximum power point position. The obtained results validate the effectiveness of this method for EV application.","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127564464","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 : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9908696
K. Mahesh, V. Manohar
Partial Discharges (PD) are the electrical discharges occurring in the insulation of equipment’s, which are mainly caused because of the presence of voids within the insulation. When considering a high voltage system and if the voltage at the voids increases, the PD creates severe damages to the system. If the normal voltage in a system exceeds above the threshold level, then there occurs the partial discharge and it occurs in insulations of solids, liquids and gases. The resulting PD current completely relies on the form of discharge and also on the type of system leading to degradation in insulation materials. The PD in a system is measured either by On-line or Off-line techniques. The online technique aids in enhancing the reliability of the system; also protects the system from large damages and is performed at certain frequencies, while the offline techniques are performed at different frequencies. In this paper, a comparative study is carried out amidst the different online and offline techniques which employ various topologies to detect and localize the partial discharges occurring in a system with high accuracy, better sensitivity and with good clarity.
{"title":"Techniques employed to detect and localize partial discharge in solid and liquid dielectrics","authors":"K. Mahesh, V. Manohar","doi":"10.1109/SeFeT55524.2022.9908696","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9908696","url":null,"abstract":"Partial Discharges (PD) are the electrical discharges occurring in the insulation of equipment’s, which are mainly caused because of the presence of voids within the insulation. When considering a high voltage system and if the voltage at the voids increases, the PD creates severe damages to the system. If the normal voltage in a system exceeds above the threshold level, then there occurs the partial discharge and it occurs in insulations of solids, liquids and gases. The resulting PD current completely relies on the form of discharge and also on the type of system leading to degradation in insulation materials. The PD in a system is measured either by On-line or Off-line techniques. The online technique aids in enhancing the reliability of the system; also protects the system from large damages and is performed at certain frequencies, while the offline techniques are performed at different frequencies. In this paper, a comparative study is carried out amidst the different online and offline techniques which employ various topologies to detect and localize the partial discharges occurring in a system with high accuracy, better sensitivity and with good clarity.","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128045555","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 : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9909368
Sakshi Sharma, Pankaj D. Achlerkar, Prashant Shrivastava, A. Garg, B. K. Panigrahi
Accurate State of Charge (SoC) prediction is the solution to problems entailing Li-ion batteries, especially in the backdrop of increasing Electric Vehicle (EV) usage globally. The challenges including over/undercharging issues, protection, safety, battery-health and reliable operation of an EV, have paved way for devising accurate estimation models. In this paper, a thorough investigation has been made in selecting the Feed forward Neural Network (FNN) for the prediction of SoC. The network is trained with a particular driving cycle condition under different temperatures and is tested in another driving cycle conditions to prove the efficacy of the proposed FNN. To improve the estimation accuracy, a new current integral feature along with the measured current, voltage and temperature is utilized for the training of the model. The trained FNN is capable enough to predict SoC with high accuracy throughout all temperature range. Also, the model is robust as it is found to be working effectively, even under noise conditions.
{"title":"Neural Network based State of Charge Prediction of Lithium-ion Battery","authors":"Sakshi Sharma, Pankaj D. Achlerkar, Prashant Shrivastava, A. Garg, B. K. Panigrahi","doi":"10.1109/SeFeT55524.2022.9909368","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9909368","url":null,"abstract":"Accurate State of Charge (SoC) prediction is the solution to problems entailing Li-ion batteries, especially in the backdrop of increasing Electric Vehicle (EV) usage globally. The challenges including over/undercharging issues, protection, safety, battery-health and reliable operation of an EV, have paved way for devising accurate estimation models. In this paper, a thorough investigation has been made in selecting the Feed forward Neural Network (FNN) for the prediction of SoC. The network is trained with a particular driving cycle condition under different temperatures and is tested in another driving cycle conditions to prove the efficacy of the proposed FNN. To improve the estimation accuracy, a new current integral feature along with the measured current, voltage and temperature is utilized for the training of the model. The trained FNN is capable enough to predict SoC with high accuracy throughout all temperature range. Also, the model is robust as it is found to be working effectively, even under noise conditions.","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133615260","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 : 2022-08-04DOI: 10.1109/SeFeT55524.2022.9909369
Saran Chaurasiya, Bhim Singh
This paper presents a grid interactive off-board three phase EV charger capable for both distorted and healthy grid scenarios. The charging system incorporates three phase VSC, working in active rectification mode during forward power transfer whereas, in grid power fed mode it works as inverter mode. The controlled charging or discharging is made through full bridge (FB) LLC converter. The control for active power factor correction (APFC) stage is designed to not allow any reflection in grid angle with the presence of harmonics, DC offsets and frequency drift in grid voltage due to grid faults, sensing unit anomalies and distributed generation. The intermediate DC link reference is regulated in conjunction with the variation in battery terminal voltage to achieve wide EV charging voltage range and soft switching over complete charging profile with limited range of switching frequency. For this, a coordinated control is designed to cater wide range of EV charging with optimum efficiency point tracking over complete charging profile. The control for DC-DC stage uses both frequency modulation and phase shift over both H-bridges to regulate power in and out from the EV battery. For this, a 6.6 kW system is designed and simulated to validate the effectiveness of the claimed benefits of the designed charging system over both strong and weak grid scenarios.
{"title":"A Three Phase Grid Interactive Bidirectional Off-board EV Charger with Weak and Strong Grid Durability","authors":"Saran Chaurasiya, Bhim Singh","doi":"10.1109/SeFeT55524.2022.9909369","DOIUrl":"https://doi.org/10.1109/SeFeT55524.2022.9909369","url":null,"abstract":"This paper presents a grid interactive off-board three phase EV charger capable for both distorted and healthy grid scenarios. The charging system incorporates three phase VSC, working in active rectification mode during forward power transfer whereas, in grid power fed mode it works as inverter mode. The controlled charging or discharging is made through full bridge (FB) LLC converter. The control for active power factor correction (APFC) stage is designed to not allow any reflection in grid angle with the presence of harmonics, DC offsets and frequency drift in grid voltage due to grid faults, sensing unit anomalies and distributed generation. The intermediate DC link reference is regulated in conjunction with the variation in battery terminal voltage to achieve wide EV charging voltage range and soft switching over complete charging profile with limited range of switching frequency. For this, a coordinated control is designed to cater wide range of EV charging with optimum efficiency point tracking over complete charging profile. The control for DC-DC stage uses both frequency modulation and phase shift over both H-bridges to regulate power in and out from the EV battery. For this, a 6.6 kW system is designed and simulated to validate the effectiveness of the claimed benefits of the designed charging system over both strong and weak grid scenarios.","PeriodicalId":262863,"journal":{"name":"2022 IEEE 2nd International Conference on Sustainable Energy and Future Electric Transportation (SeFeT)","volume":"55 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132241254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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