Pub Date : 2020-08-01DOI: 10.1109/PowerAfrica49420.2020.9219932
Abdullateef. T. Bamigbade, P. Oluseyi
The transmission component of power system network spans over very large area, covering long distances is highly susceptible to various technical challenges capable of disrupting continuous supply of electric power to load centers. To effectively and efficiently operate the system, all insecure operating states that could result to cascading outages must be quickly detected and mitigated. Consequently, this work investigates the insecure operating states within the Nigeria power grid system considering the integration of Static Var Compensator (SVC). Power flow analysis is performed on the system and line stability index is deployed to monitor the system while gradually increasing reactive power at load buses. The voltage collapse point for all load buses are determined and the weakest identified for compensation. Thus the results obtained show that active and reactive power losses reduce as the bus voltages improve to acceptable limits. The results validate the technical and cost effectiveness of SVC.
{"title":"Identification of Critical Buses for FACTS Integration into Nigerian Grid","authors":"Abdullateef. T. Bamigbade, P. Oluseyi","doi":"10.1109/PowerAfrica49420.2020.9219932","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219932","url":null,"abstract":"The transmission component of power system network spans over very large area, covering long distances is highly susceptible to various technical challenges capable of disrupting continuous supply of electric power to load centers. To effectively and efficiently operate the system, all insecure operating states that could result to cascading outages must be quickly detected and mitigated. Consequently, this work investigates the insecure operating states within the Nigeria power grid system considering the integration of Static Var Compensator (SVC). Power flow analysis is performed on the system and line stability index is deployed to monitor the system while gradually increasing reactive power at load buses. The voltage collapse point for all load buses are determined and the weakest identified for compensation. Thus the results obtained show that active and reactive power losses reduce as the bus voltages improve to acceptable limits. The results validate the technical and cost effectiveness of SVC.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123562900","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 : 2020-08-01DOI: 10.1109/PowerAfrica49420.2020.9219989
O. Apata, D. Oyedokun
There has been a significant growth in the development of wind energy systems leading to a gradual shift from the fixed speed wind turbines (FSWT) to the variable speed wind turbines (VSWT). Despite this gradual shift in wind turbine systems, the fixed speed wind generator turbines still account for a non-negligible percentage of wind turbines across the globe. One of the reasons for this gradual shift from the fixed speed wind generators is its poor reactive power management and voltage instability under grid fault conditions. This paper investigates a fixed speed wind farm under a grid fault condition and the impact of the static synchronous compensator (STATCOM) in improving the voltage stability of the wind farm. The results show that the presence of a STATCOM device in a fixed speed wind system greatly improves the voltage stability of the system in both transient and steady state conditions.
{"title":"Impact Of Statcom On Voltage Stability Of Fixed Speed Wind Farms","authors":"O. Apata, D. Oyedokun","doi":"10.1109/PowerAfrica49420.2020.9219989","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219989","url":null,"abstract":"There has been a significant growth in the development of wind energy systems leading to a gradual shift from the fixed speed wind turbines (FSWT) to the variable speed wind turbines (VSWT). Despite this gradual shift in wind turbine systems, the fixed speed wind generator turbines still account for a non-negligible percentage of wind turbines across the globe. One of the reasons for this gradual shift from the fixed speed wind generators is its poor reactive power management and voltage instability under grid fault conditions. This paper investigates a fixed speed wind farm under a grid fault condition and the impact of the static synchronous compensator (STATCOM) in improving the voltage stability of the wind farm. The results show that the presence of a STATCOM device in a fixed speed wind system greatly improves the voltage stability of the system in both transient and steady state conditions.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123679019","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 : 2020-08-01DOI: 10.1109/PowerAfrica49420.2020.9219951
M. Rainey, D. Oyedokun
As countries around the world begin to increase the contribution of renewable energy generation into their interconnected power systems, a large portion of this generation is interfaced to the power system through power electronic converters. As the increase in their contribution begins to displace traditional synchronous generation through end of life and/or early decommissioning, the power system inertia will decrease. This increases the rate of change of frequency (ROCOF) making the frequency of the system respond quicker to power imbalances. In this paper, load modelling and their effects on ROCOF are explored to highlight the key considerations when deriving conclusions based on the power system inertia outlook. The outcome showed that more realistic composite load structures based on type of loads that reflect the corresponding economic activity will present different outlooks on the inertia response of the power system. The outcome of this research also demonstrates how composite load modelling effects on the network and interlinked transmission line loading can result in lower frequency nadir and ROCOF. This outcome is very critical in understanding the dynamic loading conditions on transmission lines against possible contingencies and the network inertia status.
{"title":"Load Modelling Effects on Power System Inertia Response","authors":"M. Rainey, D. Oyedokun","doi":"10.1109/PowerAfrica49420.2020.9219951","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219951","url":null,"abstract":"As countries around the world begin to increase the contribution of renewable energy generation into their interconnected power systems, a large portion of this generation is interfaced to the power system through power electronic converters. As the increase in their contribution begins to displace traditional synchronous generation through end of life and/or early decommissioning, the power system inertia will decrease. This increases the rate of change of frequency (ROCOF) making the frequency of the system respond quicker to power imbalances. In this paper, load modelling and their effects on ROCOF are explored to highlight the key considerations when deriving conclusions based on the power system inertia outlook. The outcome showed that more realistic composite load structures based on type of loads that reflect the corresponding economic activity will present different outlooks on the inertia response of the power system. The outcome of this research also demonstrates how composite load modelling effects on the network and interlinked transmission line loading can result in lower frequency nadir and ROCOF. This outcome is very critical in understanding the dynamic loading conditions on transmission lines against possible contingencies and the network inertia status.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122083321","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 : 2020-08-01DOI: 10.1109/PowerAfrica49420.2020.9219938
K. Moloi, Y. Hamam, J. Jordaan
The integration of renewable energy distributed generation (REDG) into the existing distribution networks (DNs) has over the years become popular. This practice has brought significant and numerous advantages in the technical, economic, and environmental sectors. However, locating REDGs in a random location may result in poor voltage profile and an increase in the active power losses. It is therefore imperative that the location of REDGs be optimized to obtain satisfactory results. In this research work, we propose an analysis-based method for REDGs location using a sensitive index algorithm. The method is carried out in order to improve the voltage profile of the power grid system and minimize the active power losses in the system. The validation of the proposed method is tested using an IEEE-24 bus system node arrangement. The results presented show that optimizing the locality of the REDGs improves the voltage and minimizes the power losses significantly.
{"title":"Optimal Location of DGs Into the Power Distribution Grid for Voltage and Power Improvement","authors":"K. Moloi, Y. Hamam, J. Jordaan","doi":"10.1109/PowerAfrica49420.2020.9219938","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219938","url":null,"abstract":"The integration of renewable energy distributed generation (REDG) into the existing distribution networks (DNs) has over the years become popular. This practice has brought significant and numerous advantages in the technical, economic, and environmental sectors. However, locating REDGs in a random location may result in poor voltage profile and an increase in the active power losses. It is therefore imperative that the location of REDGs be optimized to obtain satisfactory results. In this research work, we propose an analysis-based method for REDGs location using a sensitive index algorithm. The method is carried out in order to improve the voltage profile of the power grid system and minimize the active power losses in the system. The validation of the proposed method is tested using an IEEE-24 bus system node arrangement. The results presented show that optimizing the locality of the REDGs improves the voltage and minimizes the power losses significantly.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125070643","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 : 2020-08-01DOI: 10.1109/PowerAfrica49420.2020.9219830
Hamza Mustapha, Muhammad Buhari
Integration of renewable energy sources into grids comes with numerous benefits to electric power systems, but also with challenges too. Thus, integration of Solar PV generators to the grid is attracting huge interest. This paper analyses the impact of integrating large-scale PV generation on power networks' small-signal stability. This led to the design of a dynamic genetic algorithm (DGA) based power system stabilizer for seamless PV integration into the grid. The responses of Single-machine infinite-bus system when PV system is integrated are analyzed and a dynamic GA based controller designed for improvement. Results obtained show that the proposed controller can significantly improve oscillation damping by 33.24% improvement in settling time thus enhancing overall system small-signal stability.
{"title":"A Dynamic Genetic Algorithm Based Power System Stabilizer for Improving Small-signal Stability of Grid-Connected PV System","authors":"Hamza Mustapha, Muhammad Buhari","doi":"10.1109/PowerAfrica49420.2020.9219830","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219830","url":null,"abstract":"Integration of renewable energy sources into grids comes with numerous benefits to electric power systems, but also with challenges too. Thus, integration of Solar PV generators to the grid is attracting huge interest. This paper analyses the impact of integrating large-scale PV generation on power networks' small-signal stability. This led to the design of a dynamic genetic algorithm (DGA) based power system stabilizer for seamless PV integration into the grid. The responses of Single-machine infinite-bus system when PV system is integrated are analyzed and a dynamic GA based controller designed for improvement. Results obtained show that the proposed controller can significantly improve oscillation damping by 33.24% improvement in settling time thus enhancing overall system small-signal stability.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128377174","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 : 2020-08-01DOI: 10.1109/PowerAfrica49420.2020.9219818
D. Neal, Yifu Ding, I. Bello, Renke Han, Maximus Byamukama, N. Kebir, M. Mcculloch, Daniel J. Rogers, Isaack A Nyamongo, Kennedy M Waweru
Robust Extra Low COst Nanogrids (RELCON)11The project is funded through Engineering and Physical Sciences Research Council's Global Challenges Research Fund, UK (Grant No: EP/R030111/1) and received ethical clearance in UK (R53727/RE001) and Kenya (SU-IERC0281/18). is a research initiative that aims to provide electricity to a rural African community. Participants will receive a plug-and-play bidirectional multiport 300W power converter box containing a 236Wh lithium ion battery. Each converter is linked to a central hub which has photovoltaic generation and battery storage. The RELCON project will advance the progress of microgrids by tackling several problems that have impeded previous electrification efforts, namely the financial stability of tariff structures, dependency on centralized power generation and storage, community ownership and system longevity. This paper will detail RELCON's demand side management strategy and its expected direct and indirect role in addressing each of these standing deficiencies. The approach is threefold. First, energy tariffs incentivize specific customer behaviors whilst managing battery storage resources. Second, demand response load curtailment techniques will maximize power availability. Lastly, social communication will educate users in individual energy stewardship to engage participants in a utility collective.
{"title":"Demand Side Energy Management and Customer Behavioral Response in a Rural Islanded Microgrid","authors":"D. Neal, Yifu Ding, I. Bello, Renke Han, Maximus Byamukama, N. Kebir, M. Mcculloch, Daniel J. Rogers, Isaack A Nyamongo, Kennedy M Waweru","doi":"10.1109/PowerAfrica49420.2020.9219818","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219818","url":null,"abstract":"Robust Extra Low COst Nanogrids (RELCON)11The project is funded through Engineering and Physical Sciences Research Council's Global Challenges Research Fund, UK (Grant No: EP/R030111/1) and received ethical clearance in UK (R53727/RE001) and Kenya (SU-IERC0281/18). is a research initiative that aims to provide electricity to a rural African community. Participants will receive a plug-and-play bidirectional multiport 300W power converter box containing a 236Wh lithium ion battery. Each converter is linked to a central hub which has photovoltaic generation and battery storage. The RELCON project will advance the progress of microgrids by tackling several problems that have impeded previous electrification efforts, namely the financial stability of tariff structures, dependency on centralized power generation and storage, community ownership and system longevity. This paper will detail RELCON's demand side management strategy and its expected direct and indirect role in addressing each of these standing deficiencies. The approach is threefold. First, energy tariffs incentivize specific customer behaviors whilst managing battery storage resources. Second, demand response load curtailment techniques will maximize power availability. Lastly, social communication will educate users in individual energy stewardship to engage participants in a utility collective.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127472143","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 : 2020-08-01DOI: 10.1109/PowerAfrica49420.2020.9219974
Immaculate N. Mhlongo, G. U. Nnachi, A. Nnachi, Adegbola T. Adesola
Belt conveyors have always been an efficient means of large tonnage transportation compared to other transportation methods. They play an important role in a continuous transportation of dry bulk material, especially at the mining and coal power stations. Speed control is expected to reduce the energy consumption of belt conveyors, however, the problem is the handling of the conveyors' dynamic behaviors and the speed control, which are significantly important because, poor dynamics and inaccurate control of the conveyors could lead to high energy consumption and poor performance. Hence, a proper study by modelling and simulating the conveyor belt could lead to reduction in power consumption on conveyor belts and operating costs for companies. Therefore, the purpose of this work is to model and simulate conveyor belt system dynamic behavior and control for energy efficiency studies by using Matlab/Simulink.
{"title":"Modelling and Simulation of Conveyor Belt for Energy Efficiency Studies","authors":"Immaculate N. Mhlongo, G. U. Nnachi, A. Nnachi, Adegbola T. Adesola","doi":"10.1109/PowerAfrica49420.2020.9219974","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219974","url":null,"abstract":"Belt conveyors have always been an efficient means of large tonnage transportation compared to other transportation methods. They play an important role in a continuous transportation of dry bulk material, especially at the mining and coal power stations. Speed control is expected to reduce the energy consumption of belt conveyors, however, the problem is the handling of the conveyors' dynamic behaviors and the speed control, which are significantly important because, poor dynamics and inaccurate control of the conveyors could lead to high energy consumption and poor performance. Hence, a proper study by modelling and simulating the conveyor belt could lead to reduction in power consumption on conveyor belts and operating costs for companies. Therefore, the purpose of this work is to model and simulate conveyor belt system dynamic behavior and control for energy efficiency studies by using Matlab/Simulink.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130617687","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 : 2020-08-01DOI: 10.1109/powerafrica49420.2020.9219851
Kwabena Owusu Sarfo, W. Amuna, Bright Nkabe Pouliwe, F. Effah
This paper proposes a modified perturb and observe (P&O) maximum power point tracking (MPPT) technique under partial shading conditions for a photovoltaic (PV) system. Two algorithms proposed in the literature are combined and modified for this work. The advantages of the modified technique include accuracy and simplicity of implementation. The idea behind the modification is the combination of an adjustable step size algorithm and inspection algorithm which determines the global maximum power point (MPP) by comparing all multiple MPPs. A simulation was carried out in MATLAB/Simulink to confirm the effectiveness of the proposed improved technique.
{"title":"An Improved P&O MPPT Algorithm Under Partial Shading Conditions","authors":"Kwabena Owusu Sarfo, W. Amuna, Bright Nkabe Pouliwe, F. Effah","doi":"10.1109/powerafrica49420.2020.9219851","DOIUrl":"https://doi.org/10.1109/powerafrica49420.2020.9219851","url":null,"abstract":"This paper proposes a modified perturb and observe (P&O) maximum power point tracking (MPPT) technique under partial shading conditions for a photovoltaic (PV) system. Two algorithms proposed in the literature are combined and modified for this work. The advantages of the modified technique include accuracy and simplicity of implementation. The idea behind the modification is the combination of an adjustable step size algorithm and inspection algorithm which determines the global maximum power point (MPP) by comparing all multiple MPPs. A simulation was carried out in MATLAB/Simulink to confirm the effectiveness of the proposed improved technique.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130791264","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 : 2020-08-01DOI: 10.1109/PowerAfrica49420.2020.9219792
M. J. Lencwe, S. Chowdhury, T. Olwal
Lead-acid batteries (LABs) have a short lifespan due to operational requirements of modern vehicles such as high power, storing regenerative braking energy, start/stop functionality amongst others as compared to other energy storage devices such as Lithium-Ion and Supercapacitors. As a result, this paper seeks to enhance the performance of LABs through hybridization with Supercapacitors in terms of lifespan to effectively support the enhanced usage and performance of modern transport vehicles. This is done by integrating energy storage units using active parallel topology approach through DC/DC converters. The proportional-integrate-derivative in a parallel form is used to control the charge and discharge of the LAB and Supercapacitor, thus, improving the performance of LABs. Also, Matlab/Simulink simulation tool is used to model the system integration, and the results indicate that the battery voltage is well stabilized at 12V and State-of-Charge is kept within 90-96%, thus, enhancing the battery lifespan significantly.
{"title":"Towards Performance Enhancement of Lead-Acid Battery for modern Transport Vehicles","authors":"M. J. Lencwe, S. Chowdhury, T. Olwal","doi":"10.1109/PowerAfrica49420.2020.9219792","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219792","url":null,"abstract":"Lead-acid batteries (LABs) have a short lifespan due to operational requirements of modern vehicles such as high power, storing regenerative braking energy, start/stop functionality amongst others as compared to other energy storage devices such as Lithium-Ion and Supercapacitors. As a result, this paper seeks to enhance the performance of LABs through hybridization with Supercapacitors in terms of lifespan to effectively support the enhanced usage and performance of modern transport vehicles. This is done by integrating energy storage units using active parallel topology approach through DC/DC converters. The proportional-integrate-derivative in a parallel form is used to control the charge and discharge of the LAB and Supercapacitor, thus, improving the performance of LABs. Also, Matlab/Simulink simulation tool is used to model the system integration, and the results indicate that the battery voltage is well stabilized at 12V and State-of-Charge is kept within 90-96%, thus, enhancing the battery lifespan significantly.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132024494","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 : 2020-08-01DOI: 10.1109/PowerAfrica49420.2020.9219906
S. Mukherjee, D. Saha, A. Laha, S. Ganguly
We investigate the effect of a novel switching device (Gallium Nitride based Junctionless FinFET) in lieu of the conventional silicon MOSFET, for the transmitter and receiver sections on a wireless mobile charging system operated by PMA standard of power transfer. In automobiles, input power at the transmitter section is supplied by car battery where its output voltage varies from 9V to 16V depending upon the engine rpm, electric-current used by the accessories, ambient temperate, and charge state of the battery. We aimed to improve the overall efficiency of the system so that it can provide a regulated output of 5V even at the lower minimum value of supply voltage. We show a 2% enhancement in efficiency with the novel switch, where the operating frequency is 240 kHz. The modified wireless system can help to charge mobiles, even when the car has a high need for energy.
{"title":"Enhancing Efficiency of PMA Standard Wireless Mobile Charging System in Automobiles by incorporating state-of-the-art Wide Bandgap Switch","authors":"S. Mukherjee, D. Saha, A. Laha, S. Ganguly","doi":"10.1109/PowerAfrica49420.2020.9219906","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219906","url":null,"abstract":"We investigate the effect of a novel switching device (Gallium Nitride based Junctionless FinFET) in lieu of the conventional silicon MOSFET, for the transmitter and receiver sections on a wireless mobile charging system operated by PMA standard of power transfer. In automobiles, input power at the transmitter section is supplied by car battery where its output voltage varies from 9V to 16V depending upon the engine rpm, electric-current used by the accessories, ambient temperate, and charge state of the battery. We aimed to improve the overall efficiency of the system so that it can provide a regulated output of 5V even at the lower minimum value of supply voltage. We show a 2% enhancement in efficiency with the novel switch, where the operating frequency is 240 kHz. The modified wireless system can help to charge mobiles, even when the car has a high need for energy.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130805964","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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