EtherNet/IP网络提供一系列通用的特性和服务,并降低成本。当用户进行控制、组态和采集数据的时候,
可以很容易地管理从车间底层到顶层的信息并无缝地将它们集成为一个完整的系统。
------------------------------------------------------------------
陕西欣鸿然自动化设备有限公司
联系人:宁超 热 线:029-83338136
手 机:15339052544 Q Q:1293858601
邮箱:1293858601@qq.com 传真:029-83561013
------------------------------------------------------------------
变频器输出为PWM波,含有较多的高次谐波。变频功率传感器通过对输入的电压、电流信号进行交流采样,再将采样值通过电缆、光纤等传输系统与数字量输入变频功率分析仪,数字量输入变频功率分析仪对电压、电流的采样值进行运算,可以获取电压有效值、电流有效值、基波电压、基波电流、谐波电压、谐波电流、有功功率、基波功率、谐波功率等参数。
同整流器相反,逆变器是将直流功率变换为所要求频率的交流功率,以所确定的时间使6个开关器件导通、关断就可以得到3相交流输出。以电压型pwm逆变器为例示出开关时间和电压波形。
控制电路是给异步电动机供电(电压、频率可调)的主电路提供控制信号的回路,它有频率、电压的“运算电路”,主电路的“电压、电流检测电路”,电动机的“速度检测电路”,将运算电路的控制信号进行放大的“驱动电路”,以及逆变器和电动机的“保护电路”组成。
(1)运算电路:将外部的速度、转矩等指令同检测电路的电流、电压信号进行比较运算,决定逆变器的输出电压、频率。
(2)电压、电流检测电路:与主回路电位隔离检测电压、电流等。
(3)驱动电路:驱动主电路器件的电路。它与控制电路隔离使主电路器件导通、关断。
(4)速度检测电路:以装在异步电动机轴机上的速度检测器(tg、plg等)的信号为速度信号,送入运算回路,根据指令和运算可使电动机按指令速度运转。
(5)保护电路:检测主电路的电压、电流等,当发生过载或过电压等异常时,为了防止逆变器和异步电动机损坏
变频器(Variable-frequency Drive,缩写:VFD),也称为变频驱动器或驱动控制器,可译作Inverter(和反变器的英文相同)。变频器是可调速驱动系统的一种,是应用变频驱动技术改变交流电动机工作电压的频率和幅度,来平滑控制交流电动机速度及转矩[1][2]:p210–215[3][4]:p4,最常见的是输入及输出都是交流电的交流/交流转换器。
在变频器出现之前,要调整电动机转速的应用需透过直流电动机才能完成,不然就是要透过利用内建耦合机的VS电动机,在运转中用耦合机使电动机的实际转速下降,变频器简化了上述的工作,缩小了设备体积,大幅度降低了维修率。不过变频器的电源线及电动机线上面有高频切换的讯号,会造成电磁干扰,而变频器输入侧的功率因素一般不佳,会产生电源端的谐波。
变频器的应用范围很广,从小型家电到大型的矿场研磨机及压缩机。全球约1/3的能量是消耗在驱动定速离心泵、风扇及压缩机的电动机上,而变频器的市场渗透率仍不算高。能源效率的显著提升是使用变频器的主要原因之一。
变频器技术和电力电子有密切关系,包括半导体切换元件、变频器拓扑、控制及模拟技术、以及控制硬件及固件的进步等。
Allen Bradley 1747-L543, Ser. C, Processor, 5/04, Revision 7, SLC 500, 1747L543
Adept Tech PN# 10332-00600 VIS/PCA STD Vision/VME/FG Machine Vision
Fanuc A860-0361-T001 aA64 Pulsecoder Encoder
Square D 3 KVA 3 Phase Transformer Cat. 3T2F 480 Delta / 208Y/120 Vac
Allen Bradley 1336F-BRF10-AA-EN-L6 1HP 380-460 VAC Variable Frequency Drive
Bodine Electric Company Gear Motor 22B3BEBL/SR-Z2, 1/11HP 24Volt DC Amps4.4
Horton 4H40P 92361 Air Brake Clutch 1.1/8" Bore
Yaskawa SERVOPACK CACR-SR15SZ1SSY228 Motoman Servo Amplier Drive
Heidenhain EXE 650B X50/8 Interpulation Module
Rexroth Oil to Water Heat Exchanger R900015312 Water 1/2" NPT Oil 1" NPT
Honeywell eZtrend V5 Chart Recorder data Recorder TVEZ-6-0-0-000-0-0U0000-00
Omron Z4LB-CV2 Parallel Beam Linear Sensor
ONO SOKKI Torque Converter TS-2600 with Torque Detector SS-002 Capacity 200Mn-M
Omron C500-CPU11 Processor Unit 3G2C3-CPU11 w/ C500-MR431 Memory Module
PMI Motion Technologies 0088056001 Servo Drive Type VXA 48-8-16
Fanuc A06B-0113-B080 AC Servo Motor A0.5/3000
HG750 Fuji Regenerative Blower 1 HP 220 VAC 120 M3/hr 22 KPA Vacuum
SANYO MACHINE WORKS NUTRUNNER SPINDLE SCH-SP-160S4N
Kikusui Electronics Corp PAD35-50L Regulated DC Power Supply --
Vacuum Research LPWA100ISON1NOVEP24D/ 5 Minute Rebuild Vacuum Gate Valve
Tox Pressotechnik Type S 02.00.100.12-US Pneumatic Cylinder
Nilfisk Advance GMP 12112153 Vacuum Motor Repaces GMD and GMI Vacuum Motors
Adept Technologies VGB 10330-10200 Processor Board
Twin City Blower Size 150 Baldor 1 HP Motor 1725 RPM 230/460 Vac -Warranty-
VKP063A FUJI COOLANT PUMP 3 PHASE
Showa SSMA3-30 Centralized Lubricator System Pump Motor Driven 200V 3cc
TIMKEN 67790 TAPERED ROLLER BEARING
SUNX SF2-AA20 Light Curtain Emitter and Reciever 32"
Sew-Eurodrive DFT80N4TH 1HP 1700rpm 60Hz Electric Drive Motor 230/460 VAC 3 Ph
MCC Electronics 2139-25 Circuit Board with LED Display
Pinnacle MG-24-OF-20 Light Curtain Emitter & Receiver
Pinnacle Microguard MG-36-OFQ-20-MO-DC Light Curtain Controller
YOKOGAWA PARKER COMPUMOTOR DYNASERV SR1015B62 DD SERVO
Bayside NR23S-003 Right Angle Gearhead, Standard Backlash
Marathon Model#PVJ213TTDR7026GPL 7.5HP Electric Motor
Fanuc A16B-1212-053 1/01A Power Supply Board
Fuel Storage Tank 500 Gallon Biodiesel, Waste Oil Burner System Storage Tank
^ Campbell, Sylvester J. Solid-State AC Motor Controls. New York: Marcel Dekker, Inc. 1987: 79–189. ISBN 0-8247-7728-X.
^ 2.0 2.1 2.2 Jaeschke, Ralph L. Controlling Power Transmission Systems. Cleveland, OH: Penton/IPC. 1978.
^ 3.0 3.1 Siskind, Charles S. Electrical Control Systems in Industry. New York: McGraw-Hill, Inc. 1963: 224. ISBN 0-07-057746-3.
^ 4.0 4.1 4.2 NEMA Standards Publication. Application Guide for AC Adjustable Speed Drive Systems. Rosslyn, VA USA: National Electrical Manufacturers Association (now The Association of Electrical Equipment and Medical Imaging Manufacturers). 2007 [Mar. 27, 2008].
^ Campbell, pp. 79-83
^ Bose, Bimal K. Power Electronics and Motor Drives : Advances and Trends. Amsterdam: Academic. 2006: 22. ISBN 978-0-12-088405-6.
^ 8.0 8.1 8.2 8.3 Bartos, Frank J. AC Drives Stay Vital for the 21st Century. Control Engineering (Reed Business Information). Sep. 1, 2004.
^ Eisenbrown, Robert E.. AC Drives, Historical and Future Perspective of Innovation and Growth. Keynote Presentation for the 25th Anniversary of The Wisconsin Electric Machines and Power Electronics Consortium (WEMPEC). University of Wisconsin, Madison, WI, USA: WEMPEC. May 18, 2008: pp. 6–10 [Mar. 28, 2008].
^ Jahn, Thomas M.; Owen, Edward L. AC Adjustable-Speed Drives at the Millennium: How Did We Get Here?. IEEE Transactions on Power Electronics (IEEE). Jan. 2001, 16 (1): 17–25. doi:10.1109/63.903985.
^ Basics of AC drives. Hardware-Part 2: slide 2 of 9. [Apr. 18, 2012].
^ Bose, Bimal K. Adjustable Speed AC Drive Systems. New York: IEEE Press. 1980. ISBN 0-87942-146-0.
^ Bose (2006), p. 183
^ Campbell, pp. 82–85
^ Bose, Bimal K.PEIA 2011 - Workshop on Power Electronics for Insdustrial Applicationa and Renewable Energy Conversion. Doha,Qatar. 12. 2011 [Feb.8, 2012].
^ Basics of AC Drives, p. Programming: slide 3 of 7
^ Basics of AC Drives, p. Hardware - Part 2: slide 7 of 9
^ Cleaveland, Peter. AC Adjustable Speed Drives. Control Engineering (Reed Business Information). Nov. 1, 2007.
^ Campbell, pp. 107-129
^ 24.0 24.1 Basics of AC Drives, pp. Hardware - Part 1: slides 9-10 of 11
^ Energy Regeneration, slide 3
^ Energy Regeneration, slide 6
上元元年三月丙子,降死罪,流以下原之。四月戊申,山南东道将张维瑾反, 杀其节度使史翙。丁巳,有彗星出于娄、胃。己未,来瑱为山南东道节度使,以讨 张维瑾。闰月辛酉,有彗星出于西方。甲戌,徙封系为越王。己卯,大赦,改元, 赐文武官爵。追封太公望为武成王。复死刑三覆奏。是月,大饥。张维瑾降。五月 丙午,太子太傅苗晋卿为侍中。壬子,吕諲罢。六月乙丑,凤翔节度使崔光远及羌、 浑、党项战于泾、陇,败之。乙酉,又败之于普润。李光弼及史思明战于怀州,败 之。七月丁未,圣皇天帝迁于西内。十一月甲午,扬州长史刘展反,陷润州。丙申, 陷升州。壬子,李峘、淮南节度使邓景山及刘展战于淮上,败绩。是岁,吐蕃陷廓 州。西原蛮寇边,桂州经略使邢济败之。