{"title":"Designing microprocessor-based protection hardware for ultra-critical applications","authors":"D. McGinn, V. Muthukrishnan, Wei Wang","doi":"10.1109/ESTS.2009.4906538","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906538","url":null,"abstract":"The protection of power system infrastructure in general is a mission-critical application, and when applied in the context of shipboard systems, it faces even more demanding requirements in terms of both application security and availability, as well the harsher environment of shipboard applications. This paper reports on a new generation of protection and control system designed for enhanced security, dependability and availability. The principle is based on distributed I/O devices that transmit data and commands digitally over fiber optics, in place of individual discrete copper wires, to traditionally defined relays.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116575686","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}
A. Monti, M. Colciago, P. Conti, M. Maglio, R. Dougal
{"title":"Integrated simulation of communication, protection, and power in MVDC systems","authors":"A. Monti, M. Colciago, P. Conti, M. Maglio, R. Dougal","doi":"10.1109/ESTS.2009.4906536","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906536","url":null,"abstract":"We present an integrated approach to design and simulation of the protection management system for a medium voltage DC distribution system. A new model-based approach to the design process integrates representations of the communication, control and power systems. A co-simulation approach is used, incorporating three best-in-class tools - the Virtual Test Bed for representation of the dynamic system, Simulink for representation of the controls, and Opnet for representation of the communication network. Using this new framework, we explored the performance of a new two-level alarm system including consideration of the communication constraints.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"08 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124464301","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}
{"title":"Measurement of partial discharge in machine winding insulation during short-rise time pulse voltage","authors":"C.D. Taylor, S. Grzybowski","doi":"10.1109/ESTS.2009.4906562","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906562","url":null,"abstract":"The use of power electronics can increase the electrical stress for machine winding insulation. These increased electrical stresses require improvements in quality of the electrical insulation system. A popular method of testing insulation quality is the use of partial discharge measurements. When power electronics are utilized, the harmonics of applied square pulses are present in the electrical insulation. Furthermore, partial discharges due to such voltage distortions cannot be identified and localized with traditional lower frequency measurement techniques. Recent studies include partial discharge measurements for pulse voltage source, but do not completely address problems introduced by the degradation of the machine winding insulation. A method is presented to evaluate partial discharges when square pulse voltage and high temperature is applied causing degradation of machine winding insulation.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126000919","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}
{"title":"Effects of magnet shape on torque characteristics of Interior Permanent Magnet machines","authors":"Lusu Guo, L. Parsa","doi":"10.1109/ESTS.2009.4906499","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906499","url":null,"abstract":"Interior Permanent Magnet (IPM) motors are widely used in various industrial applications due to many advantages such as high power density, high efficiency, low manufacturing cost and wide constant power operating range. Compared to Surface Mounted Permanent Magnet (SMPM) motors, IPM motors take advantage of both magnetic torque produced by permanent magnets and reluctance torque, which is due to unequal reluctance of the d and q axis. In this paper, the effects of permanent magnet configurations on motor performance are investigated. Three-phase, 8-pole, 9-slot modular and three-phase 4-pole, 36-slot conventional IPM machines have been considered in this study. The effect of straight-shape, V-shape and U-shape permanent magnets on machine performance characteristics are compared through finite element analysis (FEA). The average torque, torque ripple, phase back-EMFs along with constant power operating capability are analyzed.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124584885","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}
J.W. Czapor, E.J. Hankey, A. Bendre, J. Bess, S.R. Englund
{"title":"Design and implementation of a 6kW three-phase active buck rectifier","authors":"J.W. Czapor, E.J. Hankey, A. Bendre, J. Bess, S.R. Englund","doi":"10.1109/ESTS.2009.4906518","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906518","url":null,"abstract":"This paper presents the design implementation of a 6 kW three-phase active buck rectifier for use with a brushless direct current (BLDC) motor inverter. It describes the hardware circuit topology developed for the design, including a functional discussion of the design blocks and the component technologies selected. It also illustrates the control techniques used, including a discussion of the modulation strategy. Lastly, the paper provides performance illustrations of the design validating the circuit topology and control techniques.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122565279","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}
{"title":"High power clean DC bus generation using AC-link AC to DC power voltage conversion, DC regulation, and galvanic isolation","authors":"I. Evans, R. Limpaecher","doi":"10.1109/ESTS.2009.4906528","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906528","url":null,"abstract":"The proliferation of large non linear loads such as main propulsion and thruster variable frequency drives (VFDs) on both warships and commercial vessels, high voltage power supplies for lasers and other advanced weapons on warships require both AC voltage transformation and power conversion from AC to DC. For VFDs, rectification from AC to DC and inversion from DC back to AC is necessary; a process also applicable for some types of naval electric weapons and defensive systems. AC power transformation and rectification requires large conventional, low frequency transformers (i.e. 50 Hz or 60 Hz operation) in order to achieve voltage transformation and then rectification to provide the required level of DC voltage. The rectification process results in the production of harmonic currents and subsequent voltage distortion which, as is widely acknowledged, can adversely affect the operational integrity of the vessel or installation. The purpose of this paper is to propose a marine power system distribution system based on 'clean DC power' for some classes of naval vessels, commercial shipping and drilling/offshore applications. The paper introduces AC Linktrade technology, a 'soft switching' (i.e. it has no switching losses), high frequency technology which can transform voltages from any AC source within the converter (i.e. no conventional transformers are required) to either low voltage or medium-high voltage as part of the AC to DC conversion process. The AC Linktrade converter draws virtually harmonic free AC current (THD<1%) at unity displacement power factor and can provide single or multiple, regulated and galvanically isolated DC outputs (or AC outputs if required). The DC power can be supplied without any harmonic ripple, based on various 'active transformer' derived configurations: a) as discrete front end rectifiers for dedicated systems; b) as the DC supply for common DC bus systems and c) as the input converter stage to low voltage or medium to high voltage DC ring main systems. Voltage transformation (AC or DC) is via internal, high frequency transformers (20 kHz) which are a fraction of the size and weight of conventional transformers. This paper also outlines important weaknesses in present harmonic mitigations technologies with respect to cost, real world performance and physical size. The proposes an exciting, advanced technology which is poised to take marine, offshore, and industrial electrical power system engineering into the 21st Century.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124047448","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}
{"title":"Gearing ratios of a magnetic gear for marine applications","authors":"N. Frank, H. Toliyat","doi":"10.1109/ESTS.2009.4906554","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906554","url":null,"abstract":"Marine propulsion systems have become increasingly electromechanical in recent years. Proposed systems show increasing torque density in an effort to reduce volume and weight. A magnetic gear is proposed to reduce the size of the propulsion motor and achieve similar torque amplification provided by a mechanical gearbox, without the maintenance and breakdown issues. A magnetic gearbox, of the concentric planetary type, will be studied for the high-torque low-speed requirements of a marine propulsion system. Torque ripple is investigated across multiple models to determine acceptable torque transfer performance.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121467509","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}
M. Faruque, V. Dinavahi, M. Sloderbeck, M. Steurer
{"title":"Geographically distributed thermo-electric co-simulation of all-electric ship","authors":"M. Faruque, V. Dinavahi, M. Sloderbeck, M. Steurer","doi":"10.1109/ESTS.2009.4906491","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906491","url":null,"abstract":"In this paper, a thermo-electric co-simulation of an all-electric ship type notional system using two geographically distributed heterogeneous real-time simulators is presented. The two real-time simulators, from RTDS and OPAL-RT, are used for modeling the electrical system and the thermal system of an all-electric ship, respectively. RTDS is located at the Center for Advanced Power Systems, Florida State University, Tallahassee, Florida, USA whereas the OPAL-RT simulator is located in the RTX-Lab at the University of Alberta, Edmonton, Canada. The two simulators separated by approximately 3500 km, exchange data through an asynchronous link over the Internet utilizing the TCP/IP and UDP protocols. The electrical model was developed using RSCAD and simulated on RTDS while the thermal model was developed using SIMULINK and simulated in the RT-LAB environment. RTDS sends the electrical power losses to the OPAL-RT simulator, which computes the temperatures of the thermal systems and sends the data back to the RTDS simulator. Simulation results indicate that despite the large physical distance between the two simulators, the co-simulation is accurate and stable. A low latency of 0.208 s was observed which is within acceptable limits for a slow system response expected from the thermal system, which has time constants in the range of seconds. Results indicate that co-simulation of different types of systems is a viable and may be a cost-effective option to perform remote hardware-in-the-loop simulation of complex multi-engineering models.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132864128","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}
{"title":"Compact DC power and propulsion systems - the definitive solution?","authors":"M. Butcher, R. Maltby, P. Parvin","doi":"10.1109/ESTS.2009.4906561","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906561","url":null,"abstract":"The limited space allocated to the propulsion system in a Naval platform has always been a challenge for electric propulsion systems and especially for the smaller platform. Many potential developments like permanent magnet motors or high temperature superconducting machines have promised significant improvements over the more conventional solutions but these generally have a long, costly, development period to achieve an effective solution which offers a low enough risk to the end-user. By considering the novel application of power electronics to distribution architectures and conventional iron-core machines, a power & propulsion system has been developed which offers an overall power density approaching that achievable with high temperature superconducting machine based systems but which depends upon conventional iron- core machine technology. This results in a lower risk solution but also is suitable for future technology insertion when the risk associated with high temperature superconducting machines has been mitigated by greater experience in other market applications. This paper describes the development of such an electric power & propulsion system. It reviews the issues behind the decision to adopt this development route, discusses the development process, reviews the benefits of this system and how the normal requirements for naval platforms have been addressed, reviews the test results to date, considers the system integration issues and predicts opportunities for the applications of this system.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133422974","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}
{"title":"ABS Rules for Integrated Power Systems (IPS)","authors":"M. Roa","doi":"10.1109/ESTS.2009.4906487","DOIUrl":"https://doi.org/10.1109/ESTS.2009.4906487","url":null,"abstract":"This paper will provide an overview of the american bureau of shipping (ABS) rules and for integrated power systems (IPS). The paper will include a review and comparison of the key requirements from the ABS steel vessel rules (for commercial ships) and the ABS naval vessel rules (for military ships) for integrated electric propulsion systems. The paper will explain how to apply the ABS propulsion redundancy notations (R1, R2, R1-S, R2-S) and dynamic positioning system (DPS) notations (DPS-0, DPS-1, DPS-2, and DPS-3) to vessels with integrated electric propulsion systems. Various military and commercial electric propulsion and integrated power system architectures will be examined and contrasted, and the merits and rationale behind the different approaches will be explained. The paper will also provide a brief summary of other standards for electric propulsion systems such as IEEE Standard 45 (2002), IEEE Recommended Practice for Electrical Installations on Shipboard, Clause 31. Electric propulsion and maneuvering system and IPS power electronics conversion equipment standards such as the new IEEE Standard P-1662 - guide for the design and application of power electronics in electrical power systems on ships and the IEC publication 60146 series, semiconductor converters - general requirements and line commutated converters. This paper will provide guidance on the development of rules and proposed changes to the ABS steel vessel rules and naval vessel rules. The paper will emphasize that ABS is always looking for feedback from industry on ways to improve the clarity of the rules, capture new technology and lessons learned from shipbuilding programs. ABS has extensive experience with electric propulsion going back as far as the T-2 tankers of World War II fame to modern day electric propulsion designs on many military sealift command (MSC), national oceanic and atmospheric administration (NOAA), and U.S. Navy ships. These designs include various MSC and NOAA oceanographic research vessels, the T-AKE dry cargo ships, the new T-AGM 25 missile range instrumentation ship, and the most advanced integrated power system using electric drive on the DDG-1000 ZUMWALT class destroyers.","PeriodicalId":446953,"journal":{"name":"2009 IEEE Electric Ship Technologies Symposium","volume":"1995 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115344637","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}