Pub Date : 2018-01-31DOI: 10.1109/IESES.2018.8349892
Manuela Sechilariu, F. Locment, L. T. B. Santos
This paper introduces a conceptual framework for full optimal operation of a building integrated DC microgrid system designed to increase the photovoltaic power penetration in urban areas. This framework aims to optimize the power flows in the microgrid, performing a realistic and optimized load shedding, performing time of use or dynamic pricing information, and to have high quality DC power supply and low energy cost. The optimization is based on the forecasting of photovoltaic power generation and load power; it is solved by mixed integer linear programming algorithm. Two time-scheduling optimal operations of a DC microgrid, with long-term and short-term weather forecasting, are proposed to obtain the best performance. Based on real photovoltaic data and real load profile, the system has been tested by simulation and compared with the non-optimized microgrid the results prove the validation of the designed framework.
{"title":"A conceptual framework for full optimal operation of a grid-connected DC microgrid","authors":"Manuela Sechilariu, F. Locment, L. T. B. Santos","doi":"10.1109/IESES.2018.8349892","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349892","url":null,"abstract":"This paper introduces a conceptual framework for full optimal operation of a building integrated DC microgrid system designed to increase the photovoltaic power penetration in urban areas. This framework aims to optimize the power flows in the microgrid, performing a realistic and optimized load shedding, performing time of use or dynamic pricing information, and to have high quality DC power supply and low energy cost. The optimization is based on the forecasting of photovoltaic power generation and load power; it is solved by mixed integer linear programming algorithm. Two time-scheduling optimal operations of a DC microgrid, with long-term and short-term weather forecasting, are proposed to obtain the best performance. Based on real photovoltaic data and real load profile, the system has been tested by simulation and compared with the non-optimized microgrid the results prove the validation of the designed framework.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114780518","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 : 2018-01-31DOI: 10.1109/IESES.2018.8349872
Rui Ma, Chen Liu, Hao Bai, E. Breaz, P. Briois, F. Gao
Solid oxide fuel cell (SOFC) plays an important role in the transportation and automotive technology like the auxiliary power unit (APU) for trucks. An accurate fuel cell model can help the design of the automatic control in the transportation. This paper analyzes the numerical stiffness in a syngas fueled tubular SOFC model through the time constants in the ordinary differential equations (ODE). The proposed multi-domain fuel cell model uncovers the coupling of the stiff characteristics inside the fuel cell system by taking consideration of electrochemical, fluidic and thermal phenomena. Written in pure C language without the dependent of any platform, the trapezoidal rule with the second order backward difference formula (TR-BDF2) ODE solver gives a possibility for the embedded applications of the proposed fuel cell model, like real-time simulation and online diagnostic control in the transportation system. In addition, the presented model in this paper can also be used to verify the control methods for SOFC APU in the heavy-duty truck.
{"title":"A multi-domain syngas solid oxide fuel cell model for transportation applications","authors":"Rui Ma, Chen Liu, Hao Bai, E. Breaz, P. Briois, F. Gao","doi":"10.1109/IESES.2018.8349872","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349872","url":null,"abstract":"Solid oxide fuel cell (SOFC) plays an important role in the transportation and automotive technology like the auxiliary power unit (APU) for trucks. An accurate fuel cell model can help the design of the automatic control in the transportation. This paper analyzes the numerical stiffness in a syngas fueled tubular SOFC model through the time constants in the ordinary differential equations (ODE). The proposed multi-domain fuel cell model uncovers the coupling of the stiff characteristics inside the fuel cell system by taking consideration of electrochemical, fluidic and thermal phenomena. Written in pure C language without the dependent of any platform, the trapezoidal rule with the second order backward difference formula (TR-BDF2) ODE solver gives a possibility for the embedded applications of the proposed fuel cell model, like real-time simulation and online diagnostic control in the transportation system. In addition, the presented model in this paper can also be used to verify the control methods for SOFC APU in the heavy-duty truck.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130024403","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 : 2018-01-01DOI: 10.1109/IESES.2018.8349910
Utkarsh D. Kavimandan, S. Mahajan, C. W. van Neste
The power transfer and efficiency of a magnetically coupled wireless power transfer system depends mainly on the frequency of operation, the distance between the primary and secondary coils, and the load condition (i.e. battery state-of-charge). Different techniques have been proposed to optimize the efficiency of these WPT systems. Most of the techniques require additional hardware to communicate data between the transmitting and the receiving coils. In this paper, the primary (transmitter) of the proposed system was controlled by tuning a variable capacitor. The tuning was performed for the dynamic changes in the coupling coefficient, which maintains a minimum phase angle between the primary voltage and current. For the receiver (secondary), load regulation was achieved by implementing a dc-dc converter with PWM control. Since both the control strategies are implemented independently, separate communication hardware is not required. The simulation of the proposed scheme was performed using MATLAB/Simulink. The simulated results of the proposed dual control system yielded a power transfer efficiency of ∼ 85% in spite of variations in the load and the coupling coefficient.
{"title":"Dual independent control for inductive wireless power transfer","authors":"Utkarsh D. Kavimandan, S. Mahajan, C. W. van Neste","doi":"10.1109/IESES.2018.8349910","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349910","url":null,"abstract":"The power transfer and efficiency of a magnetically coupled wireless power transfer system depends mainly on the frequency of operation, the distance between the primary and secondary coils, and the load condition (i.e. battery state-of-charge). Different techniques have been proposed to optimize the efficiency of these WPT systems. Most of the techniques require additional hardware to communicate data between the transmitting and the receiving coils. In this paper, the primary (transmitter) of the proposed system was controlled by tuning a variable capacitor. The tuning was performed for the dynamic changes in the coupling coefficient, which maintains a minimum phase angle between the primary voltage and current. For the receiver (secondary), load regulation was achieved by implementing a dc-dc converter with PWM control. Since both the control strategies are implemented independently, separate communication hardware is not required. The simulation of the proposed scheme was performed using MATLAB/Simulink. The simulated results of the proposed dual control system yielded a power transfer efficiency of ∼ 85% in spite of variations in the load and the coupling coefficient.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124467833","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 : 1900-01-01DOI: 10.1109/IESES.2018.8349869
Xinping Ding, Dailing Yu, Yingjie Song, Bicui Xue
In this paper, a family of high efficiency high step-up dc-dc converter is presented, which inherits all advantages of both switched-inductor dc-dc converter and coupled-inductor dc-dc converter. The proposed converters can achieve high step-up capability with the proper duty cycle D (high or small D leads to the bad efficiency), obtain soft-switching conditions of active devices (including switch and rectifier diodes), and recycle the energy of leakage inductance to the output capacitor, which results in the high efficiency. The switch of converter operates in ZCS turn-on condition, which decreases the switching loss and improves the switch operating environment. The rectifier diodes cut off with ZCS condition, which improves the reverse recovery characteristics of diodes. The voltage relationships, operating principle, and operating modes are described in detail. Finally, experimental results verity the validity of the proposed switched-coupled inductor boost converter.
{"title":"Switched-coupled inductor DC-DC converters","authors":"Xinping Ding, Dailing Yu, Yingjie Song, Bicui Xue","doi":"10.1109/IESES.2018.8349869","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349869","url":null,"abstract":"In this paper, a family of high efficiency high step-up dc-dc converter is presented, which inherits all advantages of both switched-inductor dc-dc converter and coupled-inductor dc-dc converter. The proposed converters can achieve high step-up capability with the proper duty cycle D (high or small D leads to the bad efficiency), obtain soft-switching conditions of active devices (including switch and rectifier diodes), and recycle the energy of leakage inductance to the output capacitor, which results in the high efficiency. The switch of converter operates in ZCS turn-on condition, which decreases the switching loss and improves the switch operating environment. The rectifier diodes cut off with ZCS condition, which improves the reverse recovery characteristics of diodes. The voltage relationships, operating principle, and operating modes are described in detail. Finally, experimental results verity the validity of the proposed switched-coupled inductor boost converter.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115443825","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 : 1900-01-01DOI: 10.1109/IESES.2018.8349878
D. Ronanki, N. A. Azeez, Lalit Patnaik, S. Williamson
Phase-shifted pulse width modulation (PS-PWM) technique is preferred for modular multilevel converters (MMCs) as it has even power distribution and also ensures uniform switch utilization among the submodules (SMs). In contrast, phase disposition PWM (PD-PWM) technique has superior output voltage profile, but suffers from unequal switch utilization. A new PWM technique is proposed in this paper, having the best features of the PS-PWM and PD-PWM. The SM capacitor voltage balancing algorithm has to be incorporated with the modulation scheme to maintain SM voltages at defined voltage level. This paper also presents a modified SM capacitor voltage balancing approach which can be easily implemented with any type of carrier-based PWM technique. The proposed balancing algorithm, as well as PWM technique can be extended to any level of MMC and also applicable to any SM type. The effectiveness of proposed PWM technique is validated for five-level MMC with flying capacitor SMs (FCSM) under different operating conditions against PS-PWM and PD-PWM by simulation results in PLECS platform.
{"title":"Hybrid multi-carrier PWM technique with computationally efficient voltage balancing algorithm for modular multilevel converter","authors":"D. Ronanki, N. A. Azeez, Lalit Patnaik, S. Williamson","doi":"10.1109/IESES.2018.8349878","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349878","url":null,"abstract":"Phase-shifted pulse width modulation (PS-PWM) technique is preferred for modular multilevel converters (MMCs) as it has even power distribution and also ensures uniform switch utilization among the submodules (SMs). In contrast, phase disposition PWM (PD-PWM) technique has superior output voltage profile, but suffers from unequal switch utilization. A new PWM technique is proposed in this paper, having the best features of the PS-PWM and PD-PWM. The SM capacitor voltage balancing algorithm has to be incorporated with the modulation scheme to maintain SM voltages at defined voltage level. This paper also presents a modified SM capacitor voltage balancing approach which can be easily implemented with any type of carrier-based PWM technique. The proposed balancing algorithm, as well as PWM technique can be extended to any level of MMC and also applicable to any SM type. The effectiveness of proposed PWM technique is validated for five-level MMC with flying capacitor SMs (FCSM) under different operating conditions against PS-PWM and PD-PWM by simulation results in PLECS platform.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116419167","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 : 1900-01-01DOI: 10.1109/IESES.2018.8349913
Shuangke Liu, Chengbin Ma
The Class E2 dc-dc converter, composed by soft-switching based Class E power amplifier (PA) and rectifier, is popular for 6.78 MHz wireless power transfer (WPT) for its high efficiency and simple topology. Here, we take a comprehensive analysis on the harmonic voltages and currents on the transmitting and receiving coils in a Class E2 dc-dc converter. These harmonics can be radiated into the free space through the coils, causing low system efficiency and electromagnetic interference (EMI) issues. And thus, it is expected to eliminate these harmonics. Next, an improved Class E2 dc-dc converter with low harmonic distortion and high efficiency is proposed. The harmonic distortions on both receiving and transmitting coils are greatly reduced by the employment of the full-wave Class E rectifier and Pi impedance transformation network. The total harmonic distortion (THD) of voltages and currents are less than 57.5% of those of the classical system. In addition to the reduction of harmonic distortion, the proposed converter is able to maintain high efficiencies, over 70%, when the coil coupling changes, by carefully designing the Pi network.
{"title":"Low-harmonic-distortion and high-efficiency class E2 DC-DC converter for 6.78 MHz WPT","authors":"Shuangke Liu, Chengbin Ma","doi":"10.1109/IESES.2018.8349913","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349913","url":null,"abstract":"The Class E2 dc-dc converter, composed by soft-switching based Class E power amplifier (PA) and rectifier, is popular for 6.78 MHz wireless power transfer (WPT) for its high efficiency and simple topology. Here, we take a comprehensive analysis on the harmonic voltages and currents on the transmitting and receiving coils in a Class E2 dc-dc converter. These harmonics can be radiated into the free space through the coils, causing low system efficiency and electromagnetic interference (EMI) issues. And thus, it is expected to eliminate these harmonics. Next, an improved Class E2 dc-dc converter with low harmonic distortion and high efficiency is proposed. The harmonic distortions on both receiving and transmitting coils are greatly reduced by the employment of the full-wave Class E rectifier and Pi impedance transformation network. The total harmonic distortion (THD) of voltages and currents are less than 57.5% of those of the classical system. In addition to the reduction of harmonic distortion, the proposed converter is able to maintain high efficiencies, over 70%, when the coil coupling changes, by carefully designing the Pi network.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128697896","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 : 1900-01-01DOI: 10.1109/IESES.2018.8349860
Shin-Ju Chen, Sung-Pei Yang, Chao-Ming Huang, Sin-Da Li
An interleaved high step-up DC-DC converter with three-winding coupled inductors and voltage multiplier modules is proposed for high voltage gain and high efficiency applications. The configuration integrates the techniques of winding-cross-coupled inductors, voltage multiplier modules and interactive using the clamp capacitors. The converter achieves high voltage gain without operating at extreme duty ratio. The switch voltage stress is greatly lower than the output voltage such that the low-voltage-rated MOSFETs with low conduction resistor are available to reduce the conduction losses. The output-diode reverse-recovery problem is alleviated due to the leakage inductances of the coupled inductors. The leakage energy of the coupled inductors is recycled such that the voltage spikes on the power switches are avoided and the efficiency is improved. The input current ripple is decreased due to the interleaved operation. A 1000 W experimental prototype with 36 V input and 400 V output is built and tested to verify the effectiveness of the proposed converter.
{"title":"Interleaved high step-up DC-DC converter with three-winding coupled inductors for renewable energy system","authors":"Shin-Ju Chen, Sung-Pei Yang, Chao-Ming Huang, Sin-Da Li","doi":"10.1109/IESES.2018.8349860","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349860","url":null,"abstract":"An interleaved high step-up DC-DC converter with three-winding coupled inductors and voltage multiplier modules is proposed for high voltage gain and high efficiency applications. The configuration integrates the techniques of winding-cross-coupled inductors, voltage multiplier modules and interactive using the clamp capacitors. The converter achieves high voltage gain without operating at extreme duty ratio. The switch voltage stress is greatly lower than the output voltage such that the low-voltage-rated MOSFETs with low conduction resistor are available to reduce the conduction losses. The output-diode reverse-recovery problem is alleviated due to the leakage inductances of the coupled inductors. The leakage energy of the coupled inductors is recycled such that the voltage spikes on the power switches are avoided and the efficiency is improved. The input current ripple is decreased due to the interleaved operation. A 1000 W experimental prototype with 36 V input and 400 V output is built and tested to verify the effectiveness of the proposed converter.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128565742","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 : 1900-01-01DOI: 10.1109/IESES.2018.8349864
Kasun Subasinghage, K. Gunawardane, N. Kularatna
Supercapacitor assisted low-dropout (SCALDO) regulator technique is gradually expanding as a novel approach to design high-efficiency, low-frequency DC-DC converters where the load sees a high-quality output of a linear regulator. Theoretical concepts, prototypes, and experimental validations of this patented technique have been well established and published in the past eight years. Further developing the SCALDO regulator's theoretical basis, the pole-zero analysis is presented in this paper. A basic background about the control loop, the open-loop transfer function, the poles and zeros of a PMOS LDO regulator are discussed here. The small-signal model of the overall SCALDO regulator is constructed using the supercapacitor circulation network and a discrete PMOS LDO regulator. With related to the small-signal model, the control loop, and the open-loop transfer function of the SCALDO regulator are derived. The results of the SCALDO regulator in terms of the DC gain, poles and zeros are compared with the PMOS LDO regulator. The theoretical analysis is validated using the simulated results obtained from the control system toolbox in MATLAB Simulink environment.
{"title":"Pole-zero analysis of supercapacitor-assisted low-dropout (SCALDO) regulator","authors":"Kasun Subasinghage, K. Gunawardane, N. Kularatna","doi":"10.1109/IESES.2018.8349864","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349864","url":null,"abstract":"Supercapacitor assisted low-dropout (SCALDO) regulator technique is gradually expanding as a novel approach to design high-efficiency, low-frequency DC-DC converters where the load sees a high-quality output of a linear regulator. Theoretical concepts, prototypes, and experimental validations of this patented technique have been well established and published in the past eight years. Further developing the SCALDO regulator's theoretical basis, the pole-zero analysis is presented in this paper. A basic background about the control loop, the open-loop transfer function, the poles and zeros of a PMOS LDO regulator are discussed here. The small-signal model of the overall SCALDO regulator is constructed using the supercapacitor circulation network and a discrete PMOS LDO regulator. With related to the small-signal model, the control loop, and the open-loop transfer function of the SCALDO regulator are derived. The results of the SCALDO regulator in terms of the DC gain, poles and zeros are compared with the PMOS LDO regulator. The theoretical analysis is validated using the simulated results obtained from the control system toolbox in MATLAB Simulink environment.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128096952","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 : 1900-01-01DOI: 10.1109/IESES.2018.8349936
T. Ustun, H. Konishi, J. Hashimoto, K. Otani
Although it is very popular among environmentalists, the replacement of fossil-fuel based generation with new age renewable energy (RE) creates problems in grid operation and stability. The intermittent nature of these resources as well as their inverter-based connection structure hinder the traditional operation of electrical networks. Consequently, the RE penetration level has been kept low to limit their impact on the infrastructure. In order to maximize RE potential, novel solutions are required and smart inverters with advanced inverter capabilities can be just that. Coupled with battery energy storage systems (BESS), they can manage RE intermittent behavior and provide auxiliary services such as frequency and voltage support. However, large scale deployment of these power conditioning systems (PCS) at distribution level can create enormous problems. To cope with this challenge, their behavior should be closely scrutinized and interoperable operation must be guaranteed with a series of tests before actual deployment. Smart Grid International Research Facility Network (SIRFN) has the services of 15 distinct labs to develop standard testing protocols and knowledge on best practices. A consortium of labs around the globe ran tests in their facilities and developed standard testing procedures for BESS. Building on that experience, IEEE P2004 project aims at developing standard hardware-in-the-loop (HIL) testing procedures for PCS. This will improve the testing capabilities since different systems can be easily modeled and verified in HIL. This paper documents these standardized testing efforts and the role of Fukushima Renewable Energy Institute, a part of SIRFN and IEEE P2004, in achieving these goals.
{"title":"Hardware-in-the-loop simulation based testing of power conditioning systems","authors":"T. Ustun, H. Konishi, J. Hashimoto, K. Otani","doi":"10.1109/IESES.2018.8349936","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349936","url":null,"abstract":"Although it is very popular among environmentalists, the replacement of fossil-fuel based generation with new age renewable energy (RE) creates problems in grid operation and stability. The intermittent nature of these resources as well as their inverter-based connection structure hinder the traditional operation of electrical networks. Consequently, the RE penetration level has been kept low to limit their impact on the infrastructure. In order to maximize RE potential, novel solutions are required and smart inverters with advanced inverter capabilities can be just that. Coupled with battery energy storage systems (BESS), they can manage RE intermittent behavior and provide auxiliary services such as frequency and voltage support. However, large scale deployment of these power conditioning systems (PCS) at distribution level can create enormous problems. To cope with this challenge, their behavior should be closely scrutinized and interoperable operation must be guaranteed with a series of tests before actual deployment. Smart Grid International Research Facility Network (SIRFN) has the services of 15 distinct labs to develop standard testing protocols and knowledge on best practices. A consortium of labs around the globe ran tests in their facilities and developed standard testing procedures for BESS. Building on that experience, IEEE P2004 project aims at developing standard hardware-in-the-loop (HIL) testing procedures for PCS. This will improve the testing capabilities since different systems can be easily modeled and verified in HIL. This paper documents these standardized testing efforts and the role of Fukushima Renewable Energy Institute, a part of SIRFN and IEEE P2004, in achieving these goals.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130043737","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 : 1900-01-01DOI: 10.1109/IESES.2018.8349896
A. Singh, Ikhlaq Hussain, Bhim Singh
This work presents an improved perturb and observe with adaptive perturbation size (IAP&O) algorithm for harnessing maximum power from a double stage solar photovoltaic (PV) energy conversion system (SPVECS) interfaced to a three phase distribution grid. Among various MPPT (Maximum Power Point Technique) techniques, the P&O method is most popular technique in industrial and domestic applications because of its simplicity. However, its performance is affected from drift problem and it is increased in quick changes of environmental conditions. In this double stage SPVECS, a VSI (Voltage Source Inverter) to a three phase distribution grid is deployed. To ensure the quality of power as per an IEEE-519 std. on harmonics, it has maintained the power quality norms in three phase distribution feeder network. Therefore, to feed the real power to the three phase distribution network and to maintain the sinusoidal grid currents, this system performs well. The Matlab/Simulink is utilized for simulation purpose and the performance of proposed system is examined in different environmental situations on an experimental prototype, which is established in the laboratory.
{"title":"An improved adaptive P&O technique for two stage grid interfaced SPVECS","authors":"A. Singh, Ikhlaq Hussain, Bhim Singh","doi":"10.1109/IESES.2018.8349896","DOIUrl":"https://doi.org/10.1109/IESES.2018.8349896","url":null,"abstract":"This work presents an improved perturb and observe with adaptive perturbation size (IAP&O) algorithm for harnessing maximum power from a double stage solar photovoltaic (PV) energy conversion system (SPVECS) interfaced to a three phase distribution grid. Among various MPPT (Maximum Power Point Technique) techniques, the P&O method is most popular technique in industrial and domestic applications because of its simplicity. However, its performance is affected from drift problem and it is increased in quick changes of environmental conditions. In this double stage SPVECS, a VSI (Voltage Source Inverter) to a three phase distribution grid is deployed. To ensure the quality of power as per an IEEE-519 std. on harmonics, it has maintained the power quality norms in three phase distribution feeder network. Therefore, to feed the real power to the three phase distribution network and to maintain the sinusoidal grid currents, this system performs well. The Matlab/Simulink is utilized for simulation purpose and the performance of proposed system is examined in different environmental situations on an experimental prototype, which is established in the laboratory.","PeriodicalId":146951,"journal":{"name":"2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131616162","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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