Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference最新文献

Optimize the life and performance of rotary encoders through correct mounting 通过正确安装优化旋转编码器的使用寿命和性能

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556509

Cory Mahn

引用次数: 3

Enhanced algorithm for motor rotor broken bar detection 改进的电机转子断条检测算法

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556515

J. Vico, I. Voloh, D. Stankovic, Zhiying Zhang

{"title":"Enhanced algorithm for motor rotor broken bar detection","authors":"J. Vico, I. Voloh, D. Stankovic, Zhiying Zhang","doi":"10.1109/PAPCON.2010.5556515","DOIUrl":"https://doi.org/10.1109/PAPCON.2010.5556515","url":null,"abstract":"Motor rotor broken bar is one of the predominant failure modes of squirrel cage induction motors. There are numerous researched methods for identifying rotor bar faults: motor current signature analysis, acoustic noise measurements, vibration monitoring, temperature monitoring, electromagnetic field monitoring, infrared recognition, radio frequency emissions monitoring, etc. The most frequently used method is called the Motor Current Signature Analysis (MCSA). It is based on a signal analysis of the motor current, obtained via a regular current transformer used for motor protection purposes. It is difficult to detect rotor bar failures by looking into the currents waveform-time domain analysis, however impact of rotor broken bars to the stator currents can be determined by analyzing spectrum of frequency distribution in the frequency domain. Many factors affect reliable detection of the motor broken bar; motor load, system frequency and motor speed, construction of the motor etc. A new algorithm takes into account all these factors to adapt to a changing operational condition of the motor. Also, by learning the healthy motor frequency spectrum signature, the detection of a broken rotor bar can be made even more deterministic. The new algorithm was extensively tested on the induction motors with different system and motor conditions-results of this testing are presented. Lessons learned from the field installations are presented as well.","PeriodicalId":182346,"journal":{"name":"Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121336589","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: 1

Condensate effects on power and torque requirements during starting of dryer sections 在干燥机启动过程中，冷凝水对功率和扭矩要求的影响

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556519

M. Valenzuela, J. Bentley, R. Lorenz

{"title":"Condensate effects on power and torque requirements during starting of dryer sections","authors":"M. Valenzuela, J. Bentley, R. Lorenz","doi":"10.1109/PAPCON.2010.5556519","DOIUrl":"https://doi.org/10.1109/PAPCON.2010.5556519","url":null,"abstract":"The presence of condensate inside the dryer cylinders results in a significant increase in the power and torque required until the condensate transitions to the rimming stage. This paper evaluates the effect of the condensate during the starting of a dryer section using the experimental curves reported by several authors, as well as using a dimensionless model of the input power as a function of the condensate quantity and roll velocity. Through the evaluation of a 9-cylinder dryer section for various condensate quantities and varying number of cylinders containing condensate, a comparison is made to the power requirements of several actual paper machine dryer sections undergoing various starting procedures. These comparisons indicate that if the % condensate (condensate volume/full cylinder volume × 100) in the range of 0.5% to 1%, or greater, is nominally assumed to be present, then the sizing of the section drive capacity must take into consideration the additional indrive load resulting from this condensate. Options are proposed to consider the effect of the condensate without increasing the TAPPI rated drive capacity (RDC) of dryer sections.","PeriodicalId":182346,"journal":{"name":"Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference","volume":"888 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129904469","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: 2

Demonstration of very high temperature kiln for drying softwood lumber 用于干燥软木木材的高温窑炉的演示

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556517

G. F. Heck

引用次数: 0

Specific design considerations for AC induction motors connected to adjustable frequency drives 连接到可调频率驱动器的交流感应电动机的具体设计考虑

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556503

R. Curiac, Harry Li

{"title":"Specific design considerations for AC induction motors connected to adjustable frequency drives","authors":"R. Curiac, Harry Li","doi":"10.1109/PAPCON.2010.5556503","DOIUrl":"https://doi.org/10.1109/PAPCON.2010.5556503","url":null,"abstract":"There has been an increased usage of adjustable frequency drives (AFD) coupled with induction motors due to the demand for higher operating efficiency levels. Due to the starting requirements, motor manufacturers are forced to employ high resistivity rotor bars which lead to higher losses and lower motor efficiency. This paper will show that AFD offer the advantage of decreasing the energy consumption by eliminating the constraints of starting requirements. Short rise time voltage pulses produced by AFD may adversely affect the stator winding insulation and accelerate its aging process. The paper will discuss how motor manufacturers have addressed this problem by introducing surge resistant insulation materials, turn insulation and reinforced ground insulation. The voltage waveform harmonics of an AFD could also lead to higher motor temperature rise. Therefore, additional thermal consideration should be given. The paper will review the new IEC standards which define the stator winding insulation requirement when the induction motor operates with AFD. Another aspect discussed in the paper, related to the design of an induction motor coupled with an AFD, is how to minimize the magnetic noise that may be generated if higher frequency voltage harmonics are present in the AFD.","PeriodicalId":182346,"journal":{"name":"Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134263113","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: 4

Solidly grounded low voltage source contribution to device interrupting duty 可靠接地的低压源对设备中断任务的贡献

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556502

R. H. Simpson

引用次数: 1

ID fan drive efficiency upgrade: MV AFD to replace mechanical drive steam turbine ID风机驱动效率提升:MV AFD取代机械驱动汽轮机

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556510

W. Hopper

引用次数: 1

Flux monitoring improvements for on-line condition monitoring of turbine generator rotors 汽轮发电机转子在线状态监测的磁链监测改进

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556516

M. Šašić, S. Campbell, B. Lloyd

{"title":"Flux monitoring improvements for on-line condition monitoring of turbine generator rotors","authors":"M. Šašić, S. Campbell, B. Lloyd","doi":"10.1109/PAPCON.2010.5556516","DOIUrl":"https://doi.org/10.1109/PAPCON.2010.5556516","url":null,"abstract":"Flux monitoring via air gap flux probes is a proven technology used for many years in synchronous machines to determine the presence of turn-to-turn shorts in a rotor winding. This information is critical in planning maintenance outages and in augmenting on-line vibration analysis. Traditionally, flux measurements have been done using flux probes installed on a stator wedge and a portable or permanently connected instrument. To achieve a reliable diagnostic, the signals from the flux probe had to be measured under different generator load conditions ranging from no load to full load. This requirement presented a serious obstacle in the application of this method on base load units where load adjustments are difficult. A new design of flux probe, installed on a stator tooth, and a novel approach in algorithms used to analyze measurements can help minimize the need for tests at different load conditions and still provide reliable diagnostics. This paper describes the implementation of new hardware and software and case studies that demonstrates the effectiveness of the new method in eliminating the need for load maneuvering.","PeriodicalId":182346,"journal":{"name":"Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114525651","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: 4

Arc resistant equipment for low voltage motor control center applications 低压电机控制中心用耐电弧设备

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556521

R. Bugaris, D. Rollay

引用次数: 8

Un-powered thermal memory protection for circuit breakers 断路器无电热记忆保护

Conference Record of 2010 Annual Pulp & Paper Industry Technical Conference Pub Date : 2010-06-21 DOI: 10.1109/PAPCON.2010.5556498

J. Lagree, C. Walker

引用次数: 0