Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951653
Mohd Ferdaus Mohd Yaacob, Z. A. Noorden, J. J. Jamian
The paper evaluates the charge-discharge cyclability of ultracapacitor with glass wool separator under various concentration of aqueous sulfuric acid (H2SO4) electrolytes. For lower concentrated electrolyte of 1 mol/dm3 H2SO4, the performance was compared to an ultracapacitor with conventional cellulose separator. Two-electrode ultracapacitors were constructed by sandwiching two activated carbon electrodes with each electrolyte-containing separator material. The cyclability test was performed with constant charge-discharge current of 10 mA for up to 300 cycles. Prior to the cyclability test, the constructed ultracapacitors were evaluated based on cyclic voltammetry and galvanostatic tests. The glass wool-based capacitor has performed comparably to the conventional cellulose-based capacitor in terms of its specific capacitance and internal resistance for up to 300 cycles. Interestingly, in a higher concentrated electrolyte of 18 mol/dm3 H2SO4, the specific capacitance of the glass wool-based ultracapacitor is 40% greater than of 1 mol/dm3 H2SO4 electrolyte. It is envisaged that by applying the glass wool as the separator coupled, with high concentration aqueous electrolyte may lead to higher rating ultracapacitor at relatively lower cost as compared to an organic electrolyte-based ultracapacitor.
{"title":"Charge-discharge cyclability of ultracapacitor with glass wool separator under high concentrated sulfuric acid","authors":"Mohd Ferdaus Mohd Yaacob, Z. A. Noorden, J. J. Jamian","doi":"10.1109/PECON.2016.7951653","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951653","url":null,"abstract":"The paper evaluates the charge-discharge cyclability of ultracapacitor with glass wool separator under various concentration of aqueous sulfuric acid (H2SO4) electrolytes. For lower concentrated electrolyte of 1 mol/dm3 H2SO4, the performance was compared to an ultracapacitor with conventional cellulose separator. Two-electrode ultracapacitors were constructed by sandwiching two activated carbon electrodes with each electrolyte-containing separator material. The cyclability test was performed with constant charge-discharge current of 10 mA for up to 300 cycles. Prior to the cyclability test, the constructed ultracapacitors were evaluated based on cyclic voltammetry and galvanostatic tests. The glass wool-based capacitor has performed comparably to the conventional cellulose-based capacitor in terms of its specific capacitance and internal resistance for up to 300 cycles. Interestingly, in a higher concentrated electrolyte of 18 mol/dm3 H2SO4, the specific capacitance of the glass wool-based ultracapacitor is 40% greater than of 1 mol/dm3 H2SO4 electrolyte. It is envisaged that by applying the glass wool as the separator coupled, with high concentration aqueous electrolyte may lead to higher rating ultracapacitor at relatively lower cost as compared to an organic electrolyte-based ultracapacitor.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132485621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951463
T. Ustun
Microgrids have been proposed in an effort to handle the impact of distributed generators (DGs) and make conventional grids suitable for large scale deployments of DGs. However, the introduction of microgrids brings some challenges such as the protection of a microgrid and its entities. Due to the existence of generators at all levels of the distribution system, the fault currents vary substantially. Furthermore, grid connected and islanded modes introduce two different sets of fault currents. Consequently, the traditional fixed current relay protection schemes need to be improved. Several adaptive protection schemes have been developed in the literature. These protection approaches, despite addressing protection challenges, require extensive communication and control. In order to achieve a standard way of modeling this communication infrastructure power engineers have been using IEC 61850 and its extensions, such as IEC 61850-7-420. As a result, it has been found out that several concepts such as interoperability and interchangeability have to be considered in networks designed with IEC communication standards. This paper studies the modeling structure in IEC 61850 standard and some challenges associated with it. Then, IEC 61850 based modeling of a novel adaptive microgrid protection scheme is given in detail. The challenges and potential pitfalls related to virtualization of power system in IEC modeling world are analyzed. Finally, some insights are shared on the required steps that shall be taken to unleash capabilities of microgrids in current smart network era.
{"title":"Interoperability and interchangeability for microgrid protection systems using IEC 61850 standard","authors":"T. Ustun","doi":"10.1109/PECON.2016.7951463","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951463","url":null,"abstract":"Microgrids have been proposed in an effort to handle the impact of distributed generators (DGs) and make conventional grids suitable for large scale deployments of DGs. However, the introduction of microgrids brings some challenges such as the protection of a microgrid and its entities. Due to the existence of generators at all levels of the distribution system, the fault currents vary substantially. Furthermore, grid connected and islanded modes introduce two different sets of fault currents. Consequently, the traditional fixed current relay protection schemes need to be improved. Several adaptive protection schemes have been developed in the literature. These protection approaches, despite addressing protection challenges, require extensive communication and control. In order to achieve a standard way of modeling this communication infrastructure power engineers have been using IEC 61850 and its extensions, such as IEC 61850-7-420. As a result, it has been found out that several concepts such as interoperability and interchangeability have to be considered in networks designed with IEC communication standards. This paper studies the modeling structure in IEC 61850 standard and some challenges associated with it. Then, IEC 61850 based modeling of a novel adaptive microgrid protection scheme is given in detail. The challenges and potential pitfalls related to virtualization of power system in IEC modeling world are analyzed. Finally, some insights are shared on the required steps that shall be taken to unleash capabilities of microgrids in current smart network era.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132034335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951656
J. L. da Silva, G. D. dos Reis, S. I. Seleme, T. Meynard
An important characteristic in multicell parallel voltage source converters (VSCs), besides the enhancing of the current capacity, is the possibility of decreasing the energy storage in the output filter by interleaving the pulses sent to the semiconductors. As consequences, the filter components are smaller, losses are reduced and the electrical dynamics is enhanced, i.e. the filter presents higher bandwidth. Despite the higher speed as the number of cells increases, the filter's closed loop dynamics cannot follow continuously this improvement once the sampling/switching frequency limits the controller actuation. This paper presents a review about VSC output LCL filters and describes a methodology for the current controller design followed by an analysis in the frequency domain of the system's overall dynamics as the number of cells increases.
{"title":"Control design and frequency analysis of an output filter in parallel interleaved converters","authors":"J. L. da Silva, G. D. dos Reis, S. I. Seleme, T. Meynard","doi":"10.1109/PECON.2016.7951656","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951656","url":null,"abstract":"An important characteristic in multicell parallel voltage source converters (VSCs), besides the enhancing of the current capacity, is the possibility of decreasing the energy storage in the output filter by interleaving the pulses sent to the semiconductors. As consequences, the filter components are smaller, losses are reduced and the electrical dynamics is enhanced, i.e. the filter presents higher bandwidth. Despite the higher speed as the number of cells increases, the filter's closed loop dynamics cannot follow continuously this improvement once the sampling/switching frequency limits the controller actuation. This paper presents a review about VSC output LCL filters and describes a methodology for the current controller design followed by an analysis in the frequency domain of the system's overall dynamics as the number of cells increases.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"364 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133305266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951462
T. Ustun
The Brazilian Amazon is located in the Northern region of Brazil with rich and unused resources. In spite of the availability of the sources, the region has been characterized with the lack of electricity and, consequently, has a higher level of poverty in the country. Reasons include very low rural electrification, low electricity demand, topographical difficulties, dispersed communities, and small investments to Amazon region which is not supplied by regular. This paper investigates the possibility of using renewable energy based microgrids as an option to electrify in remote areas, in the state of Amazonas. The load profile is generated based on the local information and the available loads. Renewable energy sources such as solar and hydro are utilized in the design of hybrid off-grid microgrid systems. Then, the system is modeled in HOMER. The simulations are run to obtaion an optimal microgrid configuration for Torre da Lua which is an isolated community in the Brazilian Amazon. It is shown that renewable energy based microgrid concept can be utilized to meet the local demand and electrify these isolated communities in a feasible and clean way.
巴西亚马逊位于巴西北部地区，拥有丰富的未开发资源。尽管有能源，但该区域的特点是缺乏电力，因此该国的贫穷程度较高。原因包括农村电气化程度低，电力需求低，地形困难，社区分散，亚马逊地区投资小，没有正规电力供应。本文研究了使用基于可再生能源的微电网作为亚马逊州偏远地区通电的一种选择的可能性。负载概要文件是根据本地信息和可用负载生成的。可再生能源如太阳能和水电被用于混合型离网微电网系统的设计。然后，在HOMER中对系统进行建模。为获得巴西亚马逊地区孤立社区Torre da Lua的最佳微电网配置，进行了模拟。研究表明，基于可再生能源的微电网概念可以满足当地需求，并以可行和清洁的方式为这些孤立的社区供电。
{"title":"The importance of microgrids & renewable energy in meeting energy needs of the Brazilian Amazon","authors":"T. Ustun","doi":"10.1109/PECON.2016.7951462","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951462","url":null,"abstract":"The Brazilian Amazon is located in the Northern region of Brazil with rich and unused resources. In spite of the availability of the sources, the region has been characterized with the lack of electricity and, consequently, has a higher level of poverty in the country. Reasons include very low rural electrification, low electricity demand, topographical difficulties, dispersed communities, and small investments to Amazon region which is not supplied by regular. This paper investigates the possibility of using renewable energy based microgrids as an option to electrify in remote areas, in the state of Amazonas. The load profile is generated based on the local information and the available loads. Renewable energy sources such as solar and hydro are utilized in the design of hybrid off-grid microgrid systems. Then, the system is modeled in HOMER. The simulations are run to obtaion an optimal microgrid configuration for Torre da Lua which is an isolated community in the Brazilian Amazon. It is shown that renewable energy based microgrid concept can be utilized to meet the local demand and electrify these isolated communities in a feasible and clean way.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"546 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133453376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951556
D. Soomro, S. C. Chong, Z. Memon, A. M. Soomro
Power electronic converter is known as nonlinear device. Due to its conversion characteristic it drags and draws the source current from the power source. These characteristics make it to generate harmonics that will degrade the grid power quality (PQ). The effects of harmonics include malfunction of connected sensitive equipment such as protective relay and overheating of winding equipment like transformer and motor. Therefore, it is needed to identify the source of problems and deal with it. This paper analyses the harmonics behaviour of the three-phase six pulse (full wave) rectifier model that usually is used in industrial load applications with MATLAB software and test the constructed a fabricated circuit with PQ analyser. The results obtained from the fabricated model will be useful as the nonlinear load model for designing various types of filters to mitigate the current harmonic distortion.
{"title":"Identification of harmonics of three-phase six-pulse rectifier with different kind of loads in MATLAB and fabrication model","authors":"D. Soomro, S. C. Chong, Z. Memon, A. M. Soomro","doi":"10.1109/PECON.2016.7951556","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951556","url":null,"abstract":"Power electronic converter is known as nonlinear device. Due to its conversion characteristic it drags and draws the source current from the power source. These characteristics make it to generate harmonics that will degrade the grid power quality (PQ). The effects of harmonics include malfunction of connected sensitive equipment such as protective relay and overheating of winding equipment like transformer and motor. Therefore, it is needed to identify the source of problems and deal with it. This paper analyses the harmonics behaviour of the three-phase six pulse (full wave) rectifier model that usually is used in industrial load applications with MATLAB software and test the constructed a fabricated circuit with PQ analyser. The results obtained from the fabricated model will be useful as the nonlinear load model for designing various types of filters to mitigate the current harmonic distortion.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129369976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951562
R. Sundram, A. Jidin, Atikah binti Razi, S. A. Tarusan, M. K. Rahim
This paper presents the advantage of implementing a novel Hexagonal Flux Control Method to improve constant switching performance of multilevel 3-phase DTC scheme. The Direct Torque Control (DTC) scheme is well known to provide rapid decoupled control of torque and flux in motor control drive via a simple control structure. The utilization of 3-level CHMI in this DTC can minimize the output torque ripple by providing larger number of voltage vectors. However, DTC Scheme is known to have two major shortcomings, which are the irregular switching frequency of power switches and high torque output ripple. The usage of torque hysteresis controller plays a major role in cause of this problem. The implementation of PI based constant switching controller to replace the hysteresis controller able to solve these problems while remaining the simple DTC control structure. Conversely, there are presents of minor oscillation in the torque regulation of constant switching method in which contributed by the flux regulation factor. This paper presents about the Hexagonal Flux method implementation in-order to mitigate the flux regulation problem. The detail explanation and calculation of optimal PI parameter tuning strategy with the combination of Hexagonal Flux method have been discussed. In order to validate the feasibility, the proposed method has been compared with convention DTC system via simulation and experiment results.
{"title":"A novel Hexagonal Flux control method to improve constant switching performance of multilevel 3-phase DTC","authors":"R. Sundram, A. Jidin, Atikah binti Razi, S. A. Tarusan, M. K. Rahim","doi":"10.1109/PECON.2016.7951562","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951562","url":null,"abstract":"This paper presents the advantage of implementing a novel Hexagonal Flux Control Method to improve constant switching performance of multilevel 3-phase DTC scheme. The Direct Torque Control (DTC) scheme is well known to provide rapid decoupled control of torque and flux in motor control drive via a simple control structure. The utilization of 3-level CHMI in this DTC can minimize the output torque ripple by providing larger number of voltage vectors. However, DTC Scheme is known to have two major shortcomings, which are the irregular switching frequency of power switches and high torque output ripple. The usage of torque hysteresis controller plays a major role in cause of this problem. The implementation of PI based constant switching controller to replace the hysteresis controller able to solve these problems while remaining the simple DTC control structure. Conversely, there are presents of minor oscillation in the torque regulation of constant switching method in which contributed by the flux regulation factor. This paper presents about the Hexagonal Flux method implementation in-order to mitigate the flux regulation problem. The detail explanation and calculation of optimal PI parameter tuning strategy with the combination of Hexagonal Flux method have been discussed. In order to validate the feasibility, the proposed method has been compared with convention DTC system via simulation and experiment results.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116167078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951648
M. Roslan, S. Azmi, B. Ismail, M. Azizan, S. Lee
This paper presents a new control scheme that permits arbitrary power sharing between parallel inverters connected to a microgrid operating in island mode. The scheme processes the active and reactive output power information from all the inverters in a central controller that calculates the set-points for each inverter, based on the desired ratios of their output powers. This necessitates adjustment of the inverters' terminal voltages (phase and magnitude) relative to the voltage at the common ac bus. The power-sharing scheme is validated using MATLAB/Simulink simulation from three three-phase parallel inverters connected to a number of passive loads.
{"title":"Centralize control power sharing scheme of parallel connected inverters for microgrids","authors":"M. Roslan, S. Azmi, B. Ismail, M. Azizan, S. Lee","doi":"10.1109/PECON.2016.7951648","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951648","url":null,"abstract":"This paper presents a new control scheme that permits arbitrary power sharing between parallel inverters connected to a microgrid operating in island mode. The scheme processes the active and reactive output power information from all the inverters in a central controller that calculates the set-points for each inverter, based on the desired ratios of their output powers. This necessitates adjustment of the inverters' terminal voltages (phase and magnitude) relative to the voltage at the common ac bus. The power-sharing scheme is validated using MATLAB/Simulink simulation from three three-phase parallel inverters connected to a number of passive loads.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"15 Suppl 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121735695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951580
M. S. Mohamad, H. Zainuddin, S. Ghani, I. S. Chairul
In high voltage transformer application, mineral oil is typically used as insulation liquids because of its excellence in dielectric strength and cooling medium. However, despite the benefit of mineral oils, these oils are derived from petroleum, which is a non-renewable and non-sustainable source. In this study, palm fatty acids ester (PFAE) is used as insulation oil to investigate the performance of dielectric strength when mixed with Fe3O4 (also known as Iron Oxide) nanoparticles. The AC breakdown voltage and partial discharge inception voltage (PDIV) were measured to evaluate the performance of samples. In this paper, the PFAE oil mixed with Fe3O4 nanoparticles show improvement in AC breakdown voltage and PDIV test which is 42 % and 13 %, respectively.
{"title":"Breakdown and partial discharge performance of Palm Fatty Acid Ester (PFAE) oil-based Fe3O4 nanofluids","authors":"M. S. Mohamad, H. Zainuddin, S. Ghani, I. S. Chairul","doi":"10.1109/PECON.2016.7951580","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951580","url":null,"abstract":"In high voltage transformer application, mineral oil is typically used as insulation liquids because of its excellence in dielectric strength and cooling medium. However, despite the benefit of mineral oils, these oils are derived from petroleum, which is a non-renewable and non-sustainable source. In this study, palm fatty acids ester (PFAE) is used as insulation oil to investigate the performance of dielectric strength when mixed with Fe3O4 (also known as Iron Oxide) nanoparticles. The AC breakdown voltage and partial discharge inception voltage (PDIV) were measured to evaluate the performance of samples. In this paper, the PFAE oil mixed with Fe3O4 nanoparticles show improvement in AC breakdown voltage and PDIV test which is 42 % and 13 %, respectively.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121926072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951605
H. Das, Chee Wei Tan, A. Yatim, Nik Din bin Muhamad
Alternative energy systems (AES) are becoming popular for small scale power generation. Designing the converters which transform the DC power into AC is the main development area of AES. Conventional single-phase voltage source inverter (VSI) uses buck topology which gives lower average output voltage than the input DC voltage. However, where the output voltage requirement is larger than the input DC voltage, such as uninterruptible power supply, fuel cell (FC) and photovoltaic systems, boost inverters are used. The boost inverter applied in this study consists of two boost DC-DC converters, which provides sinusoidal AC voltage output. The key drawback of the inverter lies in its control structure. In this paper, a dual loop control method is applied to ensure pure sinusoidal output voltage with fast dynamic response and low input current ripple. The input voltage of the inverter is assumed to be stable at 48 V considering commercially available FC voltage and the output voltage is regulated at 110 Vrms. In this article, the operating principle, mathematical modelling, analysis and control strategy of the boost inverter is presented. The proposed control strategy is verified with simulation using MATLAB/Simulink®. Simulation results show that the output voltage is 110 Vrms pure sinusoidal and the input current has low ripples.
{"title":"Analysis and control of boost inverter for fuel cell applications","authors":"H. Das, Chee Wei Tan, A. Yatim, Nik Din bin Muhamad","doi":"10.1109/PECON.2016.7951605","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951605","url":null,"abstract":"Alternative energy systems (AES) are becoming popular for small scale power generation. Designing the converters which transform the DC power into AC is the main development area of AES. Conventional single-phase voltage source inverter (VSI) uses buck topology which gives lower average output voltage than the input DC voltage. However, where the output voltage requirement is larger than the input DC voltage, such as uninterruptible power supply, fuel cell (FC) and photovoltaic systems, boost inverters are used. The boost inverter applied in this study consists of two boost DC-DC converters, which provides sinusoidal AC voltage output. The key drawback of the inverter lies in its control structure. In this paper, a dual loop control method is applied to ensure pure sinusoidal output voltage with fast dynamic response and low input current ripple. The input voltage of the inverter is assumed to be stable at 48 V considering commercially available FC voltage and the output voltage is regulated at 110 Vrms. In this article, the operating principle, mathematical modelling, analysis and control strategy of the boost inverter is presented. The proposed control strategy is verified with simulation using MATLAB/Simulink®. Simulation results show that the output voltage is 110 Vrms pure sinusoidal and the input current has low ripples.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"21 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123618337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951537
S. Z. Hassan, Hui Li, T. Kamal, Ali Arsalan, A. U. Lawan
This paper describes the performance of grid-integrated Hybrid Renewable Power System (HRPS). It establishes a Wind Turbine (WT), a Microturbine (MT) and a battery which support the dump load, Local Grid (LG) and/or grid integrated domestic load. DC/DC converters are used to join WT, MT and battery in a common DC bus. The output of DC bus is synchronized to the local grid through hysteresis controlled three-phase voltage source converter to increase the continuity of power. The proposed HRPS is working under switching control algorithm. According to the proposed algorithm, the wind energy is controlled via optimal torque based maximum power point tracking method, and is used the primary energy source to meet the load demands. The MT is added as a secondary system to confirm continuous power flow. The battery is utilized as a high energy density and/or back device to keep the DC-bus voltage constant. The dump load is used to consume any excess power inside the system. To verify the effectiveness and performance of proposed system, a test bed is created using Matlab/Simulink based on recorded wind speed and load profile of a small community at Peshawar, Pakistan region. Various results are obtained to show proposed power system performance in terms of grid synchronization, voltage and frequency stability, power quality and load tracking.
{"title":"Performance of grid-integrated Wind/Microturbine/battery Hybrid renewable power system","authors":"S. Z. Hassan, Hui Li, T. Kamal, Ali Arsalan, A. U. Lawan","doi":"10.1109/PECON.2016.7951537","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951537","url":null,"abstract":"This paper describes the performance of grid-integrated Hybrid Renewable Power System (HRPS). It establishes a Wind Turbine (WT), a Microturbine (MT) and a battery which support the dump load, Local Grid (LG) and/or grid integrated domestic load. DC/DC converters are used to join WT, MT and battery in a common DC bus. The output of DC bus is synchronized to the local grid through hysteresis controlled three-phase voltage source converter to increase the continuity of power. The proposed HRPS is working under switching control algorithm. According to the proposed algorithm, the wind energy is controlled via optimal torque based maximum power point tracking method, and is used the primary energy source to meet the load demands. The MT is added as a secondary system to confirm continuous power flow. The battery is utilized as a high energy density and/or back device to keep the DC-bus voltage constant. The dump load is used to consume any excess power inside the system. To verify the effectiveness and performance of proposed system, a test bed is created using Matlab/Simulink based on recorded wind speed and load profile of a small community at Peshawar, Pakistan region. Various results are obtained to show proposed power system performance in terms of grid synchronization, voltage and frequency stability, power quality and load tracking.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130286387","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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