Pub Date : 2006-11-01DOI: 10.1109/PESA.2006.343063
Richard H. Barden
This paper uses plastic molded bobbins, headers and toroid mounts used in the electronics industry to highlight quality, safety and environmental trade-offs being made in favor of lower component costs. The trade-offs are often made without understanding the cost and risks being transferred from purchasing to more costly portions of the product manufacturing process, or to the customer.
{"title":"Cost Savings at the Expense of Quality, Safety, and the Environment. A Plastic Molding Example","authors":"Richard H. Barden","doi":"10.1109/PESA.2006.343063","DOIUrl":"https://doi.org/10.1109/PESA.2006.343063","url":null,"abstract":"This paper uses plastic molded bobbins, headers and toroid mounts used in the electronics industry to highlight quality, safety and environmental trade-offs being made in favor of lower component costs. The trade-offs are often made without understanding the cost and risks being transferred from purchasing to more costly portions of the product manufacturing process, or to the customer.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121802279","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 : 2006-11-01DOI: 10.1109/PESA.2006.343070
E.W.C. Lo
In Hong Kong, a number of medium-scale building integrated photovoltaic (BIPV) systems were completed in last few years. These BIPV projects included government building, commercial building, schools, institutional building. The power rating the BIPV system for each project is in the order of tens of kilowatts. Most of these BIPV systems are grid-connected type to eliminate the bulky and troublesome battery banks. Some of these projects are retrofitting on existing buildings; while some are parts of a new building. The paper gives details on the design of these PV systems in Hong Kong, including system configurations, design considerations, protections, grid-connection interfacing, power quality issues, their performance, technical difficulties encountered, and experience gained.
{"title":"Recent Projects of Building Integrated Photovoltaic in Hong Kong","authors":"E.W.C. Lo","doi":"10.1109/PESA.2006.343070","DOIUrl":"https://doi.org/10.1109/PESA.2006.343070","url":null,"abstract":"In Hong Kong, a number of medium-scale building integrated photovoltaic (BIPV) systems were completed in last few years. These BIPV projects included government building, commercial building, schools, institutional building. The power rating the BIPV system for each project is in the order of tens of kilowatts. Most of these BIPV systems are grid-connected type to eliminate the bulky and troublesome battery banks. Some of these projects are retrofitting on existing buildings; while some are parts of a new building. The paper gives details on the design of these PV systems in Hong Kong, including system configurations, design considerations, protections, grid-connection interfacing, power quality issues, their performance, technical difficulties encountered, and experience gained.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126761163","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 : 2006-11-01DOI: 10.1109/PESA.2006.343112
C. D. Xu, Ka Wai Eric Cheng, Hao Zhang, X. K. Ma, Kai Ding
This paper presents two series of models in the buck-boost converters with input regulators under peak current mode control. Stroboscopic maps are derived to describe the dynamical behaviors of buck-boost converters with input filter capacitor. In terms of the developed discrete maps, fast scale instabilities in buck-boost converters are studied. Numerical results reveal the circuit system exhibits distinguishing nonlinear phenomena, i.e., intermittent bifurcations and chaos. In addition, the periodicity of the intermittent behaviors is also analyzed in detail.
{"title":"Study of Intermittent Bifurcations and Chaos in Buck-Boost Converters with Input regulators","authors":"C. D. Xu, Ka Wai Eric Cheng, Hao Zhang, X. K. Ma, Kai Ding","doi":"10.1109/PESA.2006.343112","DOIUrl":"https://doi.org/10.1109/PESA.2006.343112","url":null,"abstract":"This paper presents two series of models in the buck-boost converters with input regulators under peak current mode control. Stroboscopic maps are derived to describe the dynamical behaviors of buck-boost converters with input filter capacitor. In terms of the developed discrete maps, fast scale instabilities in buck-boost converters are studied. Numerical results reveal the circuit system exhibits distinguishing nonlinear phenomena, i.e., intermittent bifurcations and chaos. In addition, the periodicity of the intermittent behaviors is also analyzed in detail.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124321625","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 : 2006-11-01DOI: 10.1109/PESA.2006.343105
Electric vehicle becomes more and more popular today. Not even major car manufacturers, small vehicle manufacturers are also developing electric vehicles. How to design a good electric vehicle? A good electric vehicle has high power efficiency, which can drive the vehicle to the maximum travelling distance between battery recharging. A series of electric vehicle has been examined, designed and tested. The design including battery, motor and gear. A prototype based on electric motor, battery and light body design has been developed. The vehicle is designed to be of low motor power and low speed operation.
{"title":"Development of Packaging and Electrical Interfacing for Electrical Vehicles","authors":"","doi":"10.1109/PESA.2006.343105","DOIUrl":"https://doi.org/10.1109/PESA.2006.343105","url":null,"abstract":"Electric vehicle becomes more and more popular today. Not even major car manufacturers, small vehicle manufacturers are also developing electric vehicles. How to design a good electric vehicle? A good electric vehicle has high power efficiency, which can drive the vehicle to the maximum travelling distance between battery recharging. A series of electric vehicle has been examined, designed and tested. The design including battery, motor and gear. A prototype based on electric motor, battery and light body design has been developed. The vehicle is designed to be of low motor power and low speed operation.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126457448","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 : 2006-11-01DOI: 10.1109/PESA.2006.343064
Gregory Lau
This paper present the DuPont Engineering Polymers and discuss how the new industry regulations impact lead free (Pb-free) electronic component material selection. The material properties discussed include thermal resistance, flammability rating, moisture absorption sensitivity, dielectric performance, electrical insulation rating, mechanical and processing and environmental needs.
{"title":"Material Selection of Electronic Components - Zytel® High Temperature Nylon HTN and Zentie® LCP","authors":"Gregory Lau","doi":"10.1109/PESA.2006.343064","DOIUrl":"https://doi.org/10.1109/PESA.2006.343064","url":null,"abstract":"This paper present the DuPont Engineering Polymers and discuss how the new industry regulations impact lead free (Pb-free) electronic component material selection. The material properties discussed include thermal resistance, flammability rating, moisture absorption sensitivity, dielectric performance, electrical insulation rating, mechanical and processing and environmental needs.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134377906","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 : 2006-11-01DOI: 10.1109/PESA.2006.343080
B. YangB., TenPao
This paper discusses the regulation and standard that European Commission has developed and imposed to the electronics industry for the environmental protection. The recent WEE and RoHS are introduced here and its implication to the electronics products and how the market is reacted is discussed. The action undertaken by the industry as well as the facilities, management is needed to cope with the changes. This paper is to discuss the details.
{"title":"How Does The Manufacture Practise Environment Protection Rules In The Market","authors":"B. YangB., TenPao","doi":"10.1109/PESA.2006.343080","DOIUrl":"https://doi.org/10.1109/PESA.2006.343080","url":null,"abstract":"This paper discusses the regulation and standard that European Commission has developed and imposed to the electronics industry for the environmental protection. The recent WEE and RoHS are introduced here and its implication to the electronics products and how the market is reacted is discussed. The action undertaken by the industry as well as the facilities, management is needed to cope with the changes. This paper is to discuss the details.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125589488","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 : 2006-11-01DOI: 10.1109/PESA.2006.343059
Iron powder is an excellent core material for a wide range of inductors in power electronics applications. A commonly used application for iron powder cores is as the output inductor in a buck pre-regulator in VRM designs. Several examples are discussed in designing inductors for this application. Designs using toroids are discussed as well as designs using the more compact "microcube" geometry.
{"title":"Current and New Applications Using Micrometals Iron Powder and 200C SERIES Core Materials","authors":"","doi":"10.1109/PESA.2006.343059","DOIUrl":"https://doi.org/10.1109/PESA.2006.343059","url":null,"abstract":"Iron powder is an excellent core material for a wide range of inductors in power electronics applications. A commonly used application for iron powder cores is as the output inductor in a buck pre-regulator in VRM designs. Several examples are discussed in designing inductors for this application. Designs using toroids are discussed as well as designs using the more compact \"microcube\" geometry.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134454299","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 : 2006-11-01DOI: 10.1109/PESA.2006.343084
Che Yanbo, Liu Liyun, K. Cheng
In order to minimize the volume of HTS magnets and reduce the perpendicular component of magnetic field, two optimal algorithms- iterative algorithm and genetic algorithm are presented to make optimal design of geometry parameter of HTS magnets. The example of optimal design of 500kJ HTS magnet is also given. And the comparison between iterative algorithm and genetic algorithm has done. The iterative algorithm is a optimal method which magnet performance varies with numbers of solenoid coil layer. The magnet geometry parameters should be determined with a rule of heightening the magnet performances and the minimum of magnet volume is found. The improved GA is applied well in magnet optimal design combining Britaina Sheffield University GA toolbox and the optimal results are obtained.
{"title":"The Optimal Parameters Design of HTS-SMES Magnets","authors":"Che Yanbo, Liu Liyun, K. Cheng","doi":"10.1109/PESA.2006.343084","DOIUrl":"https://doi.org/10.1109/PESA.2006.343084","url":null,"abstract":"In order to minimize the volume of HTS magnets and reduce the perpendicular component of magnetic field, two optimal algorithms- iterative algorithm and genetic algorithm are presented to make optimal design of geometry parameter of HTS magnets. The example of optimal design of 500kJ HTS magnet is also given. And the comparison between iterative algorithm and genetic algorithm has done. The iterative algorithm is a optimal method which magnet performance varies with numbers of solenoid coil layer. The magnet geometry parameters should be determined with a rule of heightening the magnet performances and the minimum of magnet volume is found. The improved GA is applied well in magnet optimal design combining Britaina Sheffield University GA toolbox and the optimal results are obtained.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128828191","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 : 2006-11-01DOI: 10.1109/PESA.2006.343097
Antares San-Chin Kwok, W. Gan, N. Cheung, Kwai Chung
In semiconductor manufacturing, wire bonding of chips and surface mount technology process require precise robotic linear motion. Traditionally, X-Y sliding tables driven by permanent magnet rotary motors, ball-screw and belt are used. However, they have position accuracy problem due to ball-screw backlash. Since motors and high precision grade ball-screws are expensive, high manufacturing cost is another disadvantage. Low reliability results from complex mechanical alignment and low ball-screw lifetime. This paper presents the basic structure of linear switched reluctance motor for high performance motions in manufacturing automation. No magnet is used and the traveling distance has no limitation. Consequently, this motor is extensively robust and applicable in hostile environment. A two-dimensional motor is introduced to replace the conventional X-Y table. Based on switched reluctance driving method, the proposed actuator has a very simple and robust structure with very few mechanical parts for easier manufacturing. 3 designs are compared on their mechanical structure and efficiency. Detailed motor framework description and corresponding mathematical model are shown. Applied control theory would be mentioned.
{"title":"Improvements in the Mechanical Structure of the Linear Switched Reluctance Motor","authors":"Antares San-Chin Kwok, W. Gan, N. Cheung, Kwai Chung","doi":"10.1109/PESA.2006.343097","DOIUrl":"https://doi.org/10.1109/PESA.2006.343097","url":null,"abstract":"In semiconductor manufacturing, wire bonding of chips and surface mount technology process require precise robotic linear motion. Traditionally, X-Y sliding tables driven by permanent magnet rotary motors, ball-screw and belt are used. However, they have position accuracy problem due to ball-screw backlash. Since motors and high precision grade ball-screws are expensive, high manufacturing cost is another disadvantage. Low reliability results from complex mechanical alignment and low ball-screw lifetime. This paper presents the basic structure of linear switched reluctance motor for high performance motions in manufacturing automation. No magnet is used and the traveling distance has no limitation. Consequently, this motor is extensively robust and applicable in hostile environment. A two-dimensional motor is introduced to replace the conventional X-Y table. Based on switched reluctance driving method, the proposed actuator has a very simple and robust structure with very few mechanical parts for easier manufacturing. 3 designs are compared on their mechanical structure and efficiency. Detailed motor framework description and corresponding mathematical model are shown. Applied control theory would be mentioned.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129938644","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 : 2006-11-01DOI: 10.1109/PESA.2006.343115
A.M. Chole, B. G. Fernandes
The attractiveness of the smart piezoelectric technology is mainly due to its desirable features of miniaturization and the extreme simplicity of the resulting components compared to widely used wire wound conventional magnetics. As a result, much attention has been focused on the application of PETs in high frequency switching power supplies as well as low profile inverters. In this paper, performance study on Rosen-type, multilayer piezoelectric transformer (PET) as a potential component for power electronic conversion is presented. The equivalent circuit and impedance response of PET is studied using impedance analyzer HP4192. The effects of load resistance on voltage gain, output power and resonance characteristics are studied using simulations and experimentally under sinusoidal excitation conditions. A sinusoidal source using simple laboratory equipments and a power operational amplifier (POA) is fabricated. The details of this sinusoidal source are also given.
{"title":"Performance Study on Smart Piezoelectric Transformers","authors":"A.M. Chole, B. G. Fernandes","doi":"10.1109/PESA.2006.343115","DOIUrl":"https://doi.org/10.1109/PESA.2006.343115","url":null,"abstract":"The attractiveness of the smart piezoelectric technology is mainly due to its desirable features of miniaturization and the extreme simplicity of the resulting components compared to widely used wire wound conventional magnetics. As a result, much attention has been focused on the application of PETs in high frequency switching power supplies as well as low profile inverters. In this paper, performance study on Rosen-type, multilayer piezoelectric transformer (PET) as a potential component for power electronic conversion is presented. The equivalent circuit and impedance response of PET is studied using impedance analyzer HP4192. The effects of load resistance on voltage gain, output power and resonance characteristics are studied using simulations and experimentally under sinusoidal excitation conditions. A sinusoidal source using simple laboratory equipments and a power operational amplifier (POA) is fabricated. The details of this sinusoidal source are also given.","PeriodicalId":402403,"journal":{"name":"2006 2nd International Conference on Power Electronics Systems and Applications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133492749","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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