Pub Date : 2014-09-11DOI: 10.1109/ICIT.2014.6894895
Achintha De Alwis, Zachary Harris, D. Thrimawithana, U. Madawala
Inductive Power Transfer (IPT) is a technique used for contactless power transfer from one system to another across a large air gap. The technology had been proposed for Electric Vehicle (EV) charging applications, and over the years the power transfer capability between the loosely coupled systems has improved. In this paper, the two most commonly used methodologies for unidirectional and bidirectional control of IPT systems are compared. Simulation models for each system are developed accounting for their behavior and sensitivity to variations in circuit parameters. The validity of these models is verified and the efficiency of each system is investigated using a 1.4 kW prototype systems. This comprehensive evaluation is expected to be useful when making a decision between control schemes for EV charging application.
{"title":"Control of Inductive Power Transfer systems: A comparison","authors":"Achintha De Alwis, Zachary Harris, D. Thrimawithana, U. Madawala","doi":"10.1109/ICIT.2014.6894895","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6894895","url":null,"abstract":"Inductive Power Transfer (IPT) is a technique used for contactless power transfer from one system to another across a large air gap. The technology had been proposed for Electric Vehicle (EV) charging applications, and over the years the power transfer capability between the loosely coupled systems has improved. In this paper, the two most commonly used methodologies for unidirectional and bidirectional control of IPT systems are compared. Simulation models for each system are developed accounting for their behavior and sensitivity to variations in circuit parameters. The validity of these models is verified and the efficiency of each system is investigated using a 1.4 kW prototype systems. This comprehensive evaluation is expected to be useful when making a decision between control schemes for EV charging application.","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115153814","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 : 2014-09-11DOI: 10.1109/ICIT.2014.6894980
Bong Keun Kim, Y. Sumi, Y. Matsumoto
In this paper, the snowfall simulation equipment using expanded polystyrene beads (EPB) is described, which is for evaluating visibility performance of vision based sensors affected by visibility. The snowfall simulation equipment proposed in this paper generates vortex flow when it feeds EPB snowflakes with compressed air, then the EPB snowflakes are equally distributed to multiple ejection port by the vortex flow, and the snowflake is blow away in the specific space, in which the width of the space is controlled by the direction of each ejection port. Based on this process, the EPB snowflakes inhaled by the suction pipe are blow away from the multiple ejection ports of the branch nozzle, and they are piled up on the bottom, finally they are recycled for the snowfall simulation.
{"title":"Snowfall simulation for evaluating visibility performance of vision based sensors using expanded polystyrene beads — Nozzle design for snowfall simulation","authors":"Bong Keun Kim, Y. Sumi, Y. Matsumoto","doi":"10.1109/ICIT.2014.6894980","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6894980","url":null,"abstract":"In this paper, the snowfall simulation equipment using expanded polystyrene beads (EPB) is described, which is for evaluating visibility performance of vision based sensors affected by visibility. The snowfall simulation equipment proposed in this paper generates vortex flow when it feeds EPB snowflakes with compressed air, then the EPB snowflakes are equally distributed to multiple ejection port by the vortex flow, and the snowflake is blow away in the specific space, in which the width of the space is controlled by the direction of each ejection port. Based on this process, the EPB snowflakes inhaled by the suction pipe are blow away from the multiple ejection ports of the branch nozzle, and they are piled up on the bottom, finally they are recycled for the snowfall simulation.","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121808842","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 : 2014-09-11DOI: 10.1109/ICIT.2014.6895009
O. Ellabban, H. Abu-Rub
Switched reluctance motor (SRM) is on the focus of many researchers and it is becoming a proper alternative to conventional motors. This paper reviews the different power converter topologies developed for the SRM.
{"title":"Switched reluctance motor converter topologies: A review","authors":"O. Ellabban, H. Abu-Rub","doi":"10.1109/ICIT.2014.6895009","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6895009","url":null,"abstract":"Switched reluctance motor (SRM) is on the focus of many researchers and it is becoming a proper alternative to conventional motors. This paper reviews the different power converter topologies developed for the SRM.","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125775137","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 : 2014-09-11DOI: 10.1109/ICIT.2014.6894998
N. Ito
In digital communications, the non-linear phase characteristic of a digital communication channel must be equalized by using a phase-network in such a way that the whole communication channel has nearly linear-phase and does not distort the waveform of the transmitted signal. This paper proposes an improved iterative second-order-cone-programming (iSOCP) technique for designing an all-pass (AP) phase-network such that a given ideal phase response can be well fitted in the minimax error sense. This AP phase-network design approach first approximates the highly non-linear constraint of the SOCP-based minimax design as a quadratic cone (Qcone) constraint and then iteratively solves the approximated SOCP problem. We will use an example to illustrate that this improved iSOCP design yields smaller maximum errors (peak errors) of the phase response and frequency response (FR) of the resulting AP phase-network than other existing designs such as linear-programming (LP) design and non-iterative SOCP and iSOCP designs.
{"title":"Iterative SOCP scheme for designing digital phase-networks","authors":"N. Ito","doi":"10.1109/ICIT.2014.6894998","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6894998","url":null,"abstract":"In digital communications, the non-linear phase characteristic of a digital communication channel must be equalized by using a phase-network in such a way that the whole communication channel has nearly linear-phase and does not distort the waveform of the transmitted signal. This paper proposes an improved iterative second-order-cone-programming (iSOCP) technique for designing an all-pass (AP) phase-network such that a given ideal phase response can be well fitted in the minimax error sense. This AP phase-network design approach first approximates the highly non-linear constraint of the SOCP-based minimax design as a quadratic cone (Qcone) constraint and then iteratively solves the approximated SOCP problem. We will use an example to illustrate that this improved iSOCP design yields smaller maximum errors (peak errors) of the phase response and frequency response (FR) of the resulting AP phase-network than other existing designs such as linear-programming (LP) design and non-iterative SOCP and iSOCP designs.","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123708981","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 : 2014-09-11DOI: 10.1109/ICIT.2014.6894954
Y. Yongming, Liu Xingmou, Yang Fan
This paper studies the exciting current of transformer affected by DC bias in the Tibet soil structure when the UHVDC system is working in monopole state. Firstly, the model calculating the ground potential for a typical frozen soil of the Tuotuo River substation was described, and then the ground potential around the UHVDC grounding electrode for five-layer soil in summer and winter was calculated. According to the soil parameters, the magnetic bias current of the transformer were calculated. Results indicate that the distance is less than about 4 km and the earth potential is variable in different season. The substation electrode design parameters are complex, so building substation is very inconvenient. And when the distance is adjusted from 4 km to 8km, the earth potential is changed from 400 V to 200 V, the exciting current decreased from 45mA to 5mA, the waveform unbalance will also decrease.
{"title":"Soil structure effect on transformer DC bias","authors":"Y. Yongming, Liu Xingmou, Yang Fan","doi":"10.1109/ICIT.2014.6894954","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6894954","url":null,"abstract":"This paper studies the exciting current of transformer affected by DC bias in the Tibet soil structure when the UHVDC system is working in monopole state. Firstly, the model calculating the ground potential for a typical frozen soil of the Tuotuo River substation was described, and then the ground potential around the UHVDC grounding electrode for five-layer soil in summer and winter was calculated. According to the soil parameters, the magnetic bias current of the transformer were calculated. Results indicate that the distance is less than about 4 km and the earth potential is variable in different season. The substation electrode design parameters are complex, so building substation is very inconvenient. And when the distance is adjusted from 4 km to 8km, the earth potential is changed from 400 V to 200 V, the exciting current decreased from 45mA to 5mA, the waveform unbalance will also decrease.","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125592193","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 : 2014-09-11DOI: 10.1109/ICIT.2014.6895002
Sunmin Song, Sang-Jun Lee, J. P. Ko, J. Jeon
The Gaussian Filter is one of the processing methods to smoothen images. Before detecting an object, this method is used as pre-processing, for eliminating useless detail, and connecting unnatural parts. We implemented a Gaussian Filter on FPGA, as that is the pre-processing system of the real time stereo vision system in this paper. The hardware implementation method saves the image in the Line Buffer for parallel processing of calculation, and sends the saved value to the Window Buffer, and then the result value of the passed Gaussian Filter is derived, through calculating the Gaussian mask and saved Window Buffer. This system receives the 640×480 image (25.4545MHz) from the CIS VCC-8350L camera, and transmits the blurred image to a monitor in real time (60fps).
{"title":"A hardware architecture design for real-time Gaussian filter","authors":"Sunmin Song, Sang-Jun Lee, J. P. Ko, J. Jeon","doi":"10.1109/ICIT.2014.6895002","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6895002","url":null,"abstract":"The Gaussian Filter is one of the processing methods to smoothen images. Before detecting an object, this method is used as pre-processing, for eliminating useless detail, and connecting unnatural parts. We implemented a Gaussian Filter on FPGA, as that is the pre-processing system of the real time stereo vision system in this paper. The hardware implementation method saves the image in the Line Buffer for parallel processing of calculation, and sends the saved value to the Window Buffer, and then the result value of the passed Gaussian Filter is derived, through calculating the Gaussian mask and saved Window Buffer. This system receives the 640×480 image (25.4545MHz) from the CIS VCC-8350L camera, and transmits the blurred image to a monitor in real time (60fps).","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"320 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114961641","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 : 2014-09-11DOI: 10.1109/ICIT.2014.6894867
Jae-Ha Ko, Sung‐Jun Park, Seong-Mi Park
This research is purposed for the developing battery charger using the internal parameters - internal voltage of batteries and phase-which the existing charger don't use. For the research, the volume of applied voltage and current to batteries has been adjusted using direct connected capacity, and output voltage and current has been sensed. The sensed data go through the DFT, and DFT shows direct component, real, and imaginary numbers. Using these three values, internal voltage of batteries has been monitored. By monitoring the change of the internal voltage, the time which CV takes in ordinary ways can be reduced. Therefore, the quick charger can be developed. Simulation using Psim has been made to prove this idea, and stack has been developed to see the possibilities.
{"title":"The only CC mode charger using estimation of battery internal voltage","authors":"Jae-Ha Ko, Sung‐Jun Park, Seong-Mi Park","doi":"10.1109/ICIT.2014.6894867","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6894867","url":null,"abstract":"This research is purposed for the developing battery charger using the internal parameters - internal voltage of batteries and phase-which the existing charger don't use. For the research, the volume of applied voltage and current to batteries has been adjusted using direct connected capacity, and output voltage and current has been sensed. The sensed data go through the DFT, and DFT shows direct component, real, and imaginary numbers. Using these three values, internal voltage of batteries has been monitored. By monitoring the change of the internal voltage, the time which CV takes in ordinary ways can be reduced. Therefore, the quick charger can be developed. Simulation using Psim has been made to prove this idea, and stack has been developed to see the possibilities.","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122218650","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 : 2014-09-11DOI: 10.1109/ICIT.2014.6894990
Moo-young Ryu, Yong-su Noh, Min-gi Kim, C. Won, Yong-Chae Jung
In single-phase flyback inverter for grid-connected photovoltaic (PV)-AC module, there is power mismatch on input capacitor between DC power of PV module and AC power of output. This mismatch makes power oscillation and it makes hard to control maximum power point tracking (MPPT). So, decoupling method to eliminate power ripple has attracted interest recently. Also, power generation of PV is depending on surrounding condition like irradiation, temperature etc., so PV generation power is continuously changing and transfers to grid. Therefore, PV generation power cannot be efficiently dealt. To solve this problem, energy storage system is needed. In this paper, flyback inverter having decoupling and energy storage function is proposed and verified by simulation.
{"title":"Control method of grid-connected PV-AC module with decoupling and energy storage","authors":"Moo-young Ryu, Yong-su Noh, Min-gi Kim, C. Won, Yong-Chae Jung","doi":"10.1109/ICIT.2014.6894990","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6894990","url":null,"abstract":"In single-phase flyback inverter for grid-connected photovoltaic (PV)-AC module, there is power mismatch on input capacitor between DC power of PV module and AC power of output. This mismatch makes power oscillation and it makes hard to control maximum power point tracking (MPPT). So, decoupling method to eliminate power ripple has attracted interest recently. Also, power generation of PV is depending on surrounding condition like irradiation, temperature etc., so PV generation power is continuously changing and transfers to grid. Therefore, PV generation power cannot be efficiently dealt. To solve this problem, energy storage system is needed. In this paper, flyback inverter having decoupling and energy storage function is proposed and verified by simulation.","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128493927","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 : 2014-09-11DOI: 10.1109/ICIT.2014.6894967
Keita Shimamoto, Yoshiki Ohno, T. Nozaki, K. Ohnishi
Master-slave robots with transmission of force sensation have gotten a lot of attention. 4ch-bilateral control realizes the transmission. Realizing lightweight multi-DOF robots for the system and compensating adverse effects based on communication delay are challenges for the system. For realizing lightweight multi-DOF robots, tendon-driven mechanisms are suitable as driven systems and driving systems can be separated. In order to compensate the adverse effects from communication delay, communication disturbance observer (CDOB) can be applied. CDOB requires slave system model. As it is difficult to make a model of force acting on slave system is difficult, CDOB is not appropriate for force control. However, tension control is based on force control. Therefore, in this paper, a time delay compensation method for bilateral control system with tendon-driven mechanisms is proposed. In this method, tension control and CDOB are constructed in different mode, which are independent of each other. The experimental results of the proposed method show the validity. Strings were strained with desired force by the tension control, and the adverse effects of communication disturbance was compensated by CDOB.
{"title":"Time delay compensation for tendon-driven bilateral control using modal decomposition and communication disturbance observer","authors":"Keita Shimamoto, Yoshiki Ohno, T. Nozaki, K. Ohnishi","doi":"10.1109/ICIT.2014.6894967","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6894967","url":null,"abstract":"Master-slave robots with transmission of force sensation have gotten a lot of attention. 4ch-bilateral control realizes the transmission. Realizing lightweight multi-DOF robots for the system and compensating adverse effects based on communication delay are challenges for the system. For realizing lightweight multi-DOF robots, tendon-driven mechanisms are suitable as driven systems and driving systems can be separated. In order to compensate the adverse effects from communication delay, communication disturbance observer (CDOB) can be applied. CDOB requires slave system model. As it is difficult to make a model of force acting on slave system is difficult, CDOB is not appropriate for force control. However, tension control is based on force control. Therefore, in this paper, a time delay compensation method for bilateral control system with tendon-driven mechanisms is proposed. In this method, tension control and CDOB are constructed in different mode, which are independent of each other. The experimental results of the proposed method show the validity. Strings were strained with desired force by the tension control, and the adverse effects of communication disturbance was compensated by CDOB.","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124603996","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 : 2014-09-11DOI: 10.1109/ICIT.2014.6894870
Bong-Gyu Lee, Seung-Wook Hyun, Hee-Jun Lee, Soo-Cheol Shin, C. Won, Taek-Gi Lee
In this paper, a new thermal modeling method is proposed for loss control method of 3-level Active NPC inverter. In the drawback of conventional 3-level NPC, the generated thermal in each switch is unbalanced. And utilization of designed system has decreased. In order to compensate, 3-level Active NPC inverter can distribute switch loss in accordance with operation of active switch. Therefore thermal modeling is required for thermal calculation. This paper is simple proposed new thermal modeling method based on newton's law of cooling than conventional thermal modeling method. Thought loss of active NPC is controlled. Proposed thermal modeling is verified by simulation.
{"title":"Convenient thermal modeling for loss distribution of 3-level Active NPC using newton's law","authors":"Bong-Gyu Lee, Seung-Wook Hyun, Hee-Jun Lee, Soo-Cheol Shin, C. Won, Taek-Gi Lee","doi":"10.1109/ICIT.2014.6894870","DOIUrl":"https://doi.org/10.1109/ICIT.2014.6894870","url":null,"abstract":"In this paper, a new thermal modeling method is proposed for loss control method of 3-level Active NPC inverter. In the drawback of conventional 3-level NPC, the generated thermal in each switch is unbalanced. And utilization of designed system has decreased. In order to compensate, 3-level Active NPC inverter can distribute switch loss in accordance with operation of active switch. Therefore thermal modeling is required for thermal calculation. This paper is simple proposed new thermal modeling method based on newton's law of cooling than conventional thermal modeling method. Thought loss of active NPC is controlled. Proposed thermal modeling is verified by simulation.","PeriodicalId":240337,"journal":{"name":"2014 IEEE International Conference on Industrial Technology (ICIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129671746","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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