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Conference Record of 2009 Annual Pulp and Paper Industry Technical Conference最新文献

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Causes and reduction techniques of electromagnetic noise in induction motors 感应电动机电磁噪声的成因及降噪技术
Conference Record of 2009 Annual Pulp and Paper Industry Technical Conference Pub Date : 2009-06-21 DOI: 10.1109/PAPCON.2009.5185413
R. Curiac, S. Singhal
{"title":"Causes and reduction techniques of electromagnetic noise in induction motors","authors":"R. Curiac, S. Singhal","doi":"10.1109/PAPCON.2009.5185413","DOIUrl":"https://doi.org/10.1109/PAPCON.2009.5185413","url":null,"abstract":"Induction motors are the most common prime mover used in pulp and paper mills. Noise in a paper mill is not only annoying but also harmful. Prolonged exposure to loud noise can lead to permanent hearing damage. Noise in induction motors may be airborne or electromagnetic in nature. Most of the induction motors used in pulp and paper mills have four or more poles, hence the noise in these induction motors is primarily electromagnetic in nature. It is imperative to have reliable prediction tools to accurately calculate the magnetic noise generation during the motor design phase, thus avoiding expensive rework cost. Stator - rotor mechanical design, careful stator winding design, and tight manufacturing processes can significantly reduce electromagnetic noise in an induction motor. This paper discusses the theoretical foundations for various causes of electromagnetic noise generation, and practical reduction techniques for new or existing motors.","PeriodicalId":217420,"journal":{"name":"Conference Record of 2009 Annual Pulp and Paper Industry Technical Conference","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131036037","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}
引用次数: 11
Use of third party electrical equipment and materials 使用第三方电气设备和材料
Conference Record of 2009 Annual Pulp and Paper Industry Technical Conference Pub Date : 2009-06-01 DOI: 10.1109/PAPCON.2009.5185434
Alvin Havens
{"title":"Use of third party electrical equipment and materials","authors":"Alvin Havens","doi":"10.1109/PAPCON.2009.5185434","DOIUrl":"https://doi.org/10.1109/PAPCON.2009.5185434","url":null,"abstract":"Electrical equipment and materials are available, either listed or labeled, or unlisted and unlabeled. Can unlisted and unlabeled equipment and materials be used for fabrication and installations? This paper examines consensus standards and the Code of Federal Regulations 29 to answer this question. The author merges text from the consensus standards with the Code of Federal Regulations 29 and reviews how the texts apply. The principle result is the clear understanding that third party listed or labeled equipment and materials shall be used in all cases unless the manufacturer of the equipment or material provides a safety letter.","PeriodicalId":217420,"journal":{"name":"Conference Record of 2009 Annual Pulp and Paper Industry Technical Conference","volume":"01 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124511311","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}
引用次数: 0
Lessons learned from generator tripping events at industrial facilities 从工业设施发电机跳闸事件中吸取的教训
Conference Record of 2009 Annual Pulp and Paper Industry Technical Conference Pub Date : 2008-10-31 DOI: 10.1109/PCICON.2008.4663968
C. Mozina
{"title":"Lessons learned from generator tripping events at industrial facilities","authors":"C. Mozina","doi":"10.1109/PCICON.2008.4663968","DOIUrl":"https://doi.org/10.1109/PCICON.2008.4663968","url":null,"abstract":"This paper relates a number of generator tripping events that occurred within industrial plants in the hope that the “lessons learned” will help others avoid the events described. In many cases, these failures involved human errors and could have been avoided with proper generator protection or personnel training. In a number of cases, plant operators contributed or caused the events. These events were captured on oscillographs. The paper discusses the subtleties of analyzing generator non-fault events such as loss-of-field as well as the important role that sequence of event and oscillographic records play in analyzing these events. The paper also discusses the need to change the established practice of low-resistance grounding (200–400 A) of medium voltage industrial generators. In-service failures indicate the need to limit generator ground current to much lower levels to avoid catastrophic damage. The use of hybrid generator grounding is proposed as a solution to this problem.","PeriodicalId":217420,"journal":{"name":"Conference Record of 2009 Annual Pulp and Paper Industry Technical Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132439027","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}
引用次数: 0
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