Pub Date : 2017-10-23DOI: 10.1109/IEECON.2017.8075737
S. Pholboon, M. Sumner, Petros Kounnos
The increase in penetration of renewable energy sources, such as solar or wind, and high peak load demand can cause grid network security issues. The incorporation of demand side management and energy storage devices can provide a solution to these problems. This paper presents a proposed adaptive power flow control (APFC) strategy which reduces peak grid demand, increases self-consumption of renewable energy and also reduce the imbalance energy between demand and supply. The APFC aims to directly control high power consumption appliances and the charge/discharge of a community battery storage using measurement of the instantaneous power demands of the community. Historical data records of the community daily energy consumption, the available renewable energy and the imbalance energy are taken into account to manage the loads and battery storage. Simulation results show for a community of one hundred houses, with 114 kWp of PV arrays, and a 350kWh battery system that the percentage of the average peak power demand reduction over the year is 35%, while the PV energy self-consumption increases by 64%. This can produce an annual energy cost saving of up to £2300 when compared to the same community with only PV.
{"title":"Adaptive power flow control for reducing peak demand and maximizing renewable energy usage","authors":"S. Pholboon, M. Sumner, Petros Kounnos","doi":"10.1109/IEECON.2017.8075737","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075737","url":null,"abstract":"The increase in penetration of renewable energy sources, such as solar or wind, and high peak load demand can cause grid network security issues. The incorporation of demand side management and energy storage devices can provide a solution to these problems. This paper presents a proposed adaptive power flow control (APFC) strategy which reduces peak grid demand, increases self-consumption of renewable energy and also reduce the imbalance energy between demand and supply. The APFC aims to directly control high power consumption appliances and the charge/discharge of a community battery storage using measurement of the instantaneous power demands of the community. Historical data records of the community daily energy consumption, the available renewable energy and the imbalance energy are taken into account to manage the loads and battery storage. Simulation results show for a community of one hundred houses, with 114 kWp of PV arrays, and a 350kWh battery system that the percentage of the average peak power demand reduction over the year is 35%, while the PV energy self-consumption increases by 64%. This can produce an annual energy cost saving of up to £2300 when compared to the same community with only PV.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133097316","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 : 2017-03-08DOI: 10.1109/IEECON.2017.8075734
W. Chayinthu, Kongpan Areerak, K. Areerak
Normally, the mathematical model of power converters in an electrical aircraft system is time-varying model due to the switching action. The time-varying model is very complicated for system analysis and design. Therefore, this paper presents how to derive time-invariant model of electrical aircraft system feeding a buck-boost converter using the combination between the DQ modeling method and the generalized state-space averaging method. The resulting model is validated by an intensive time-domain simulation of MATLAB. The results show that the proposed model can provide good accuracies in both transient and steady-state responses.
{"title":"The dynamic model of electrical aircraft system feeding a buck-boost converter","authors":"W. Chayinthu, Kongpan Areerak, K. Areerak","doi":"10.1109/IEECON.2017.8075734","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075734","url":null,"abstract":"Normally, the mathematical model of power converters in an electrical aircraft system is time-varying model due to the switching action. The time-varying model is very complicated for system analysis and design. Therefore, this paper presents how to derive time-invariant model of electrical aircraft system feeding a buck-boost converter using the combination between the DQ modeling method and the generalized state-space averaging method. The resulting model is validated by an intensive time-domain simulation of MATLAB. The results show that the proposed model can provide good accuracies in both transient and steady-state responses.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124800121","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 : 2017-03-08DOI: 10.1109/IEECON.2017.8075898
J. Hossea, J. Widjaja
Surface plasmon resonance (SPR) biosensors by using Powell lens is proposed. By taking an advantage of Powell lens which distributes light intensity uniformly along the length of line, broad range of samples can be measured without using a motorized rotation stage. This results in simple and compact optoelectronic sensors. A preliminary experimental verification shows that a dip intensity of light reflectance from measurement of the refractive index of air can be obtained by using the proposed sensor.
{"title":"Design of surface plasmon resonance biosensors by using powell lens","authors":"J. Hossea, J. Widjaja","doi":"10.1109/IEECON.2017.8075898","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075898","url":null,"abstract":"Surface plasmon resonance (SPR) biosensors by using Powell lens is proposed. By taking an advantage of Powell lens which distributes light intensity uniformly along the length of line, broad range of samples can be measured without using a motorized rotation stage. This results in simple and compact optoelectronic sensors. A preliminary experimental verification shows that a dip intensity of light reflectance from measurement of the refractive index of air can be obtained by using the proposed sensor.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123667520","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 : 2017-03-08DOI: 10.1109/IEECON.2017.8075747
Worapol Tangsopha, J. Thongsri, W. Busayaporn
Based on practical problem in industrial ultrasonic cleaning, this research has an objective to simulate acoustic pressure leading to cavitation in a cleaning tank. By using Harmonic response in ANSYS as simulation software, acoustic pressure distribution has been simulated at different position in the cleaning tank. The result has been confirmed by aluminum foil corrosion test. The simulations show that increasing power of piezoelectric transducers can lead to increasing the power of acoustic pressure; however, it cannot lead to the change of acoustic pressure distribution. To change the acoustic pressure distribution, the difference of frequencies is required. For such typical ultrasonic cleaning tank, the position of the highest cleaning efficiency is at the middle of the tank. Finally, the result can lead to the optimization between the power and frequency of ultrasonic to reach the maximum cleaning efficiency.
{"title":"Simulation of ultrasonic cleaning and ways to improve the efficiency","authors":"Worapol Tangsopha, J. Thongsri, W. Busayaporn","doi":"10.1109/IEECON.2017.8075747","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075747","url":null,"abstract":"Based on practical problem in industrial ultrasonic cleaning, this research has an objective to simulate acoustic pressure leading to cavitation in a cleaning tank. By using Harmonic response in ANSYS as simulation software, acoustic pressure distribution has been simulated at different position in the cleaning tank. The result has been confirmed by aluminum foil corrosion test. The simulations show that increasing power of piezoelectric transducers can lead to increasing the power of acoustic pressure; however, it cannot lead to the change of acoustic pressure distribution. To change the acoustic pressure distribution, the difference of frequencies is required. For such typical ultrasonic cleaning tank, the position of the highest cleaning efficiency is at the middle of the tank. Finally, the result can lead to the optimization between the power and frequency of ultrasonic to reach the maximum cleaning efficiency.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133200045","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 : 2017-03-08DOI: 10.1109/IEECON.2017.8075720
Ahmadian Ali, Prabhuraj Shanmugham, S. Somkun
LCL filters are extensively integrated with single-phase grid-tied voltage source converters due to their higher ripple attenuation capability. LCL filters lead to system instability due to the resonance of the filter. Limited range of resonance frequency and bandwidth ensures the stability of the system by proper design of the current controller and filter. This paper presents the modeling, design and control of a single-phase grid-connected VSC, including an LCL filter, with reactive power injecting capability. A simple PI controller in the unbalanced synchronous reference frame is designed with the Extended Symmetrical Optimum method for the grid current feedback control loop. The q-axis current control is used to inject the reactive power. The system is modeled and simulated in MATLAB/Simulink® and results are verified with an experimental setup of 1.5 kVA VSC.
由于LCL滤波器具有较高的纹波衰减能力，因此广泛集成于单相并网电压源变换器中。LCL滤波器由于其谐振导致系统不稳定。通过合理设计电流控制器和滤波器，在有限的谐振频率和带宽范围内保证了系统的稳定性。本文介绍了一种具有无功注入能力的单相并网VSC的建模、设计和控制。采用扩展对称优化方法设计了一种简单的非平衡同步参照系PI控制器，用于电网电流反馈控制回路。采用q轴电流控制注入无功功率。在MATLAB/Simulink®中对系统进行了建模和仿真，并在1.5 kVA VSC的实验装置上对结果进行了验证。
{"title":"Single-phase grid-connected voltage source converter for LCL filter with grid-current feedback","authors":"Ahmadian Ali, Prabhuraj Shanmugham, S. Somkun","doi":"10.1109/IEECON.2017.8075720","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075720","url":null,"abstract":"LCL filters are extensively integrated with single-phase grid-tied voltage source converters due to their higher ripple attenuation capability. LCL filters lead to system instability due to the resonance of the filter. Limited range of resonance frequency and bandwidth ensures the stability of the system by proper design of the current controller and filter. This paper presents the modeling, design and control of a single-phase grid-connected VSC, including an LCL filter, with reactive power injecting capability. A simple PI controller in the unbalanced synchronous reference frame is designed with the Extended Symmetrical Optimum method for the grid current feedback control loop. The q-axis current control is used to inject the reactive power. The system is modeled and simulated in MATLAB/Simulink® and results are verified with an experimental setup of 1.5 kVA VSC.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121635202","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 : 2017-03-08DOI: 10.1109/IEECON.2017.8075742
Jatuporn Changsrisuk, S. Po-ngam
This paper presents the hybrid photovoltaic (PV) energy system for the electric vehicle (EV) battery charger. The simple maximum power point tracking (MPPT) is introduced for charging the electric vehicle battery. In the AC mode, the interleaved ac/dc boost converter with power factor correction (PFC) is presented too. With the proposed PFC control strategy, the average current control method is used for regulating the sinusoidal input current waveform. Validity of the proposed control scheme is verified by simulations.
{"title":"The hybrid photovoltaic energy system for electric vehicle battery charger","authors":"Jatuporn Changsrisuk, S. Po-ngam","doi":"10.1109/IEECON.2017.8075742","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075742","url":null,"abstract":"This paper presents the hybrid photovoltaic (PV) energy system for the electric vehicle (EV) battery charger. The simple maximum power point tracking (MPPT) is introduced for charging the electric vehicle battery. In the AC mode, the interleaved ac/dc boost converter with power factor correction (PFC) is presented too. With the proposed PFC control strategy, the average current control method is used for regulating the sinusoidal input current waveform. Validity of the proposed control scheme is verified by simulations.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"206 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115588112","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 : 2017-03-08DOI: 10.1109/IEECON.2017.8075721
Ong-art Tubburee, Y. Kumsuwan
This paper presents a control scheme of a three-phase three-switch unidirectional delta-type rectifier, using a modification of discontinuous two-level space vector modulation (2L-SVM) strategy based on Vienna rectifier. The proposed arrange method was created, in order to procreate the discontinuous gate-drive signals for each power switch on the basis of five-segment switching sequence. For this proposal, the switching status of proposed rectifier within the possible operating region is examined carefully, using the diagnosis of operation stages. The duty cycle equations in every current sector are presented by utilizing the determination of the switching time method. Furthermore, the magnitude of output voltage that can be procreated by proposed rectifier is indicated. The feasibility and the effectiveness of the control scheme have been confirmed though the calculation and the computer simulation results.
{"title":"Discontinuous gate-drive signals for a three-phase three-switch unidirectional delta-type rectifier based on 2L-SVM analysis of a Vienna rectifier","authors":"Ong-art Tubburee, Y. Kumsuwan","doi":"10.1109/IEECON.2017.8075721","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075721","url":null,"abstract":"This paper presents a control scheme of a three-phase three-switch unidirectional delta-type rectifier, using a modification of discontinuous two-level space vector modulation (2L-SVM) strategy based on Vienna rectifier. The proposed arrange method was created, in order to procreate the discontinuous gate-drive signals for each power switch on the basis of five-segment switching sequence. For this proposal, the switching status of proposed rectifier within the possible operating region is examined carefully, using the diagnosis of operation stages. The duty cycle equations in every current sector are presented by utilizing the determination of the switching time method. Furthermore, the magnitude of output voltage that can be procreated by proposed rectifier is indicated. The feasibility and the effectiveness of the control scheme have been confirmed though the calculation and the computer simulation results.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132812237","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 : 2017-03-08DOI: 10.1109/IEECON.2017.8075738
Papob Lertapanon, W. Wangdee
A rapid increase in wind power installed capacities in many countries can potentially have an effect on their power grid dynamics, in particularly, on the system frequency stability. This is due to the fact that some basic wind turbine generator technologies such as doubly fed induction generator (DFIG), which is most commonly and widely used at present time, do not originally contribute to frequency response in a similar manner to conventional synchronous generators. Therefore, the frequency response feature of the DFIG-based wind turbine needs to be developed. In this paper, the frequency control for the DFIG-based wind turbine has been modeled using synthetic inertia and rotor speed control schemes, in which both controls are implemented according to the mathematic calculation. Then, the frequency response characteristics of the DFIG-based wind turbine associated with the individual control schemes and combined control schemes have been analyzed using MATLAB/Simulink. The simulation results indicate that the frequency response performance of the DFIG-based wind turbine can be enhanced by using the combined control schemes.
{"title":"Analysis and modeling of wind turbine generators considering frequency controls","authors":"Papob Lertapanon, W. Wangdee","doi":"10.1109/IEECON.2017.8075738","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075738","url":null,"abstract":"A rapid increase in wind power installed capacities in many countries can potentially have an effect on their power grid dynamics, in particularly, on the system frequency stability. This is due to the fact that some basic wind turbine generator technologies such as doubly fed induction generator (DFIG), which is most commonly and widely used at present time, do not originally contribute to frequency response in a similar manner to conventional synchronous generators. Therefore, the frequency response feature of the DFIG-based wind turbine needs to be developed. In this paper, the frequency control for the DFIG-based wind turbine has been modeled using synthetic inertia and rotor speed control schemes, in which both controls are implemented according to the mathematic calculation. Then, the frequency response characteristics of the DFIG-based wind turbine associated with the individual control schemes and combined control schemes have been analyzed using MATLAB/Simulink. The simulation results indicate that the frequency response performance of the DFIG-based wind turbine can be enhanced by using the combined control schemes.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116125524","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 : 2017-03-08DOI: 10.1109/IEECON.2017.8075797
Ramhari Poudyal, S. K. Khadka, P. Loskot
The world is facing an enormous challenge to provide sufficient quantity of clean energy to its burgeoning population. Energy is a fundamental asset for enabling socio-economic development and poverty eradication in any country. Nepal has been suffering from the chaotic energy crisis for about a decade now despite having a potential for generating 43,000 MW of hydroelectricity, 2,100 MW of solar power, and 3,000 MW of wind power. A normal life of its citizens is being crippled with long hours of load shedding and never ending queues in front of the gas stations reflecting the state of the energy-hungry country. This paper gives a perspective on the energy crisis in Nepal in order to point out how serious the problem is and also presents some ways how to obtain an immediate relieve through the use of green energy commodities. In addition, the strategic advantages to potential investors are explored that encourage investments into national priority projects facilitated by the progressive policies of the Government of Nepal.
{"title":"Understanding energy crisis in nepal: Assessment of the country's energy demand and supply in 2016","authors":"Ramhari Poudyal, S. K. Khadka, P. Loskot","doi":"10.1109/IEECON.2017.8075797","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075797","url":null,"abstract":"The world is facing an enormous challenge to provide sufficient quantity of clean energy to its burgeoning population. Energy is a fundamental asset for enabling socio-economic development and poverty eradication in any country. Nepal has been suffering from the chaotic energy crisis for about a decade now despite having a potential for generating 43,000 MW of hydroelectricity, 2,100 MW of solar power, and 3,000 MW of wind power. A normal life of its citizens is being crippled with long hours of load shedding and never ending queues in front of the gas stations reflecting the state of the energy-hungry country. This paper gives a perspective on the energy crisis in Nepal in order to point out how serious the problem is and also presents some ways how to obtain an immediate relieve through the use of green energy commodities. In addition, the strategic advantages to potential investors are explored that encourage investments into national priority projects facilitated by the progressive policies of the Government of Nepal.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129717111","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 : 2017-03-08DOI: 10.1109/IEECON.2017.8075811
S. Prongnuch, T. Wiangtong
This paper presents the implementation of image edge detection on Heterogeneous System Architecture (HSA). HSA which includes ARM processor, Coprocessor and FPGA are compared with x64 CPU in terms of performance and power consumption. The experimental results show that although the best execution time is from x64 CPU, HSA has 50 times more energy efficiency. Also, HSA can exploit coprocessors and reconfigurable hardware to reduce processing time and it can achieve 1.3x speedup when process an image with the size of 512×512 pixels.
{"title":"The implementation of edge detection on HSA environment","authors":"S. Prongnuch, T. Wiangtong","doi":"10.1109/IEECON.2017.8075811","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075811","url":null,"abstract":"This paper presents the implementation of image edge detection on Heterogeneous System Architecture (HSA). HSA which includes ARM processor, Coprocessor and FPGA are compared with x64 CPU in terms of performance and power consumption. The experimental results show that although the best execution time is from x64 CPU, HSA has 50 times more energy efficiency. Also, HSA can exploit coprocessors and reconfigurable hardware to reduce processing time and it can achieve 1.3x speedup when process an image with the size of 512×512 pixels.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121145420","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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