VLT2840PT4B20STR0DBF10A00
：（同號）/，
公司銷售的進口備件從國外生產(chǎn)廠家直接進貨，
實行扁平化的銷售模式，給客戶節(jié)約了時間和成本。
我們的目標就是國內(nèi)用戶采購國外備件遇到困難和疑難時都能找到我們。
我們能夠及時地報出優(yōu)惠的價格和迅捷的交貨期；國內(nèi)用戶采購國外備件受到*代理壟斷價格時，
我們會給用戶提供一個比較的機會，并且為客戶提供的解決方案。由于我們的訂單集中，訂貨量大，
因此我們能提供頗具競爭力的價格并能夠迅速交貨，我們*以來致力于解決國內(nèi)用戶采購國外備件中的疑難問題，
并為廣大用戶提供電氣及工控自動化成套設備的購銷、現(xiàn)場調(diào)試等全面周到的服務。
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當今電力系統(tǒng)中的電能質(zhì)量題目越來越突出，一方面，大量敏感性負荷對電能質(zhì)量的要求越來越高，而另一方面，越來越多的非線性負荷不斷接進電網(wǎng)，使電力系統(tǒng)總體的電能質(zhì)量狀況不斷惡化。
諧波是電能質(zhì)量中很重要的一個方面，諧波VLT2840PT4B20STR0DBF10A00的存在對電力系統(tǒng)產(chǎn)生的危害有以下幾個方面：
1)可能使電力系統(tǒng)繼電保護裝置和自動裝置產(chǎn)生誤動或拒動；
2)使各種電氣設備產(chǎn)生附加損耗和發(fā)熱，使電機產(chǎn)生機械振動及噪聲；
3)諧波電流在電網(wǎng)中活動增加損耗，影響電網(wǎng)及各種電氣設備的經(jīng)濟運行；
4)諧波電流通過電磁感應、電容耦合以及電氣傳導等作用，對四周的通訊系統(tǒng)產(chǎn)生干擾；
5)諧波使電網(wǎng)中廣泛使用的各種丈量儀表產(chǎn)生誤差；
6)增加了電網(wǎng)中發(fā)生諧波諧振的可能，從而造成很高的過電流或過電壓而引發(fā)事故的危險性。
隨著諧波污染的日益嚴重和對電能質(zhì)量要求的進步，對諧波抑制的要求也越來越高，如何根據(jù)現(xiàn)場的諧波污染狀況進行濾波器的投切也變得更加重要。針對這種情況，研制了一種諧波控制器，它可以對現(xiàn)場的諧波和無功等進行監(jiān)測，根據(jù)現(xiàn)場諧波狀況對濾波器進行自動投切，達到抑制諧波、改善電能質(zhì)量的目的。下面先容基于DSP芯片TMS32LF2407的諧波控制器的硬、軟件設計。
1 諧波控制器的硬件設計
諧波控制器的基本原理是實時對電流、電壓進行采樣，將采到的數(shù)據(jù)經(jīng)過D5P進行數(shù)據(jù)分析后，得到現(xiàn)場諧波的狀況，從而決策是否對濾波器進行投切。
美國TI公司生產(chǎn)的TMS32LF2407型DSP芯片是一款高性能16位定點DSP，該系列DSP控制器將實時信號處理能力和控制器外設功能集于一 身，特別適合于產(chǎn)業(yè)控制應用。其芯片供電電壓為3.3V，降低了控制器的功耗。高達40M 1PS的執(zhí)行速度(工作zui高頻率為40MEz)，片內(nèi)有32K字的FLASH程序存貯器，544字的DARAM和2K字的SARAM，可以外擴存貯器總共有：194K字空間，片內(nèi)集成了看門狗(WDT)；提供多達16路模擬輸進的10位A／D，zui小轉(zhuǎn)換時間為375ns；高達40個可單獨編程或復用的通用輸進/輸出引腳。具有低本錢、低功耗、高速運算能力和高性能處理能力的優(yōu)點。因此，該DSP芯片可以滿足作為此系統(tǒng)主控芯片的要求。
所研制的諧波控制器的硬件結(jié)構(gòu)圖如圖1所示。
通過圖1可知，此硬件電路主要包括采樣電路、中心處理單元、復位電路、鍵盤和液晶顯示功能、執(zhí)行機構(gòu)等幾個部分。下面就硬件電路設汁中要特別留意的地方進行闡述：
1.1 采樣電路
由于TMS32LF2407芯片的AD采樣zui大只能送進3.3V的電壓信號，因此，在將電流、電壓信號送到AD口之前要經(jīng)過電流互感器和電壓互感器進行調(diào)理，為了使引進的信號免受外界的干擾，互感器類型的選擇和調(diào)理電路的抗千擾要特別地留意。此外，采樣電路還應該要留意的一點是：由于TMS32LF2407的AD口很脆弱，也就是說AD口不能送進峰值超過3.3V的電壓信號，否則AD口將被燒壞，因此，添加一個限幅電路。具體的調(diào)理電路如圖2所示。
Turck RSC 572-6M Bus Stop Cordset
Napa 390705 Master Cylinder Kit
GE TQL32015 Circuit Breaker 240V 15A 1P (Used)
Square D QOB315 Circuit Breaker 240V 15A 3P (White Lettering, White Numbers)
Mopar 05016547AC Oil Filter 39983
Mopar 4864442AB Air Filter Element 94-02 Dodge Cummins
GE CR2943NA101E Start Button Station 600 V
Ferraz Shawmut Y218038 Fuse Holder 3 Pole 30 Amp 600 V
Edison JDL 80 80Amp Fuse
Square D 9001KS34 Selector Switch 2 Position 30mm Black
Buss J60030-3S Fuse Holder 30 Amp 600 Volt 3 P J Fuse
Nadella 10_09 Bearing Bag of 18
SAB Brockskes T201-013-667 Thermo Element
Lithonia QSD277 1LEVEL/N 09 Quick-Flex Extender Cable
Crompton 069544X/M-57 Hours Counter
Hoffman 18710 Lay-In Oil Tight Wireway
Brewer Machine & Gear Co. 16H2F Pitch Timing Pulley Idler 1/2"
Ushio FTD 12V-20W Halogen Lamp
Hyster 2037740 Hydraulic Forklift Oil Filter Element
NAPA Gold 2926 Air Filter
Sandvik 3212 012-360 Torx Plus Screw (Pack of 5)
Ideal 23-004M Brush Seater & Commutator Cleaner (Box of 2)
Mallory Sonalert SC110N Transducer
Allen Bradley 700-HC14A1-4 Relay with Potter & Brumfield 27E894 Relay Socket
Norgren M/58102/10 Vacuum Pump Series B
AEG SH04 Relay 16A 40E
Potter & Brumfield 27E166 Relay Socket with Allen-Bradley 700-HC14Z24 Relay
Allen Bradley 592-BOV16 Overload Relay
Mallory Sonalert SC110 Transducer
Square D FAL22015 Molded Case Circuit Breaker 240V 15A 2P
Browning H50H14 Chain Sprocket
GE RT-661 Circuit Breaker 15A 240VAC 1P
GTD 1/4-16 NPT Die
Allen-Bradley 1203-GU6 DeviceNet Module Series A
Hoerbiger KZ3672 Solenoid Valve Coil
Allen Bradley 700-PC20 Second Adder Deck (Broken Leg)
GE CR123C066A (3) Overload Heaters/Thermal Units
Thomas & Betts Steel City 58 C 30 Utility Box Cover 4" x 2-1/8" (Box of 19)
Johnson Controls Y64T22-0 Transformer 92 VA
Thomas & Betts Steel City 58 C 1 Utility Box Cover 4" x 2-1/8" (Box of 19)
Lithonia LE S W 2 R 120/277 Emergency Exit Light
Crown 60009-20 Retaining Ring
Clarostat VK200W Resistor
Thermacut T-4456 Powermax Weldng Swirl Ring 40A/60A/80A
Gentex GX93-W Continous Tone Mini-Horn (NIB)
Allen-Bradley 42GRR-9002 Photoswitch Photoelectric Sensor (Missing Lid Screw)
Norton 53A60-J8V Grinding Wheel 7 x 3/8 x 1-1/4
Gould USCC3I Ultrasafe Fuse Holder 600V 30A
Amphenol-Tuchel C019A T 3504 002 Cable Connector 5A 60V (NIP)
emecanique ZB4BA36 Pushbutton Operating Head Green (NIP)
Stemco 320 2181 Hub Seal Front Axle
Kraus & Naimer CSA C22.2-14 Selector Switch 600V 12A 3PH 5HP
Opto 22 IDC5Q I/O Module
emecanique ZB4BD3 Selector Switch
Timken JLM506849 Tapered Roller Bearing
Brush RFZ Actuator Signal Device 600V 200ka (Qty 3)
GE GE-240-RS-MV-N ProLine High Performance Electronic Ballast 120/277V
Federal Mogul 380023A Oil Seal
Shurite 302 D.C. Milliamperes 0-5
Marathon 1402401 Power Distribution Block 600V 2P
Lithonia GRS 6 HSG J2 Galvanized Steel Mounting/Plaste?r Frame
Boston Gear H1025 Helical Gear 5/8" Bore
GE CR205X100D Auxiliary Contact 600VAC
BB Battery BP7-6 Sealed Rechargeable Lead Acid Battery 6 Volts 7 Ampere Hours
Alco XB 1019 HW100-1B Power Assembly Valve
Siemens 3RH1140-1AB00 Contactor 600V 10A with 3RH1911-1GA22 Auxiliary Contact
Allen-Bradley 21A241 Coil 480V
Allen-Bradley OA11 Coil 440V
Allen-Bradley 72A288 Coil 480V
Lithonia Gotham GRS 6 YK HSG U Galvanized Steel Mounting/Plaste?r Frame
Turck WKB 4T-6 Microfast Cordset
GE 6S6 DC Mini Lamp Bulb 120V 6W (Box of 9)
Goodyear 570H100 Positive Drive Trapezoidal Tooth Profile Belt 28" L x 1" W
Crouzet GNR30DCZ DIN Mount Relay
Clark Equipment 1811124 Hydraulic Cylinder Seal Kit
Clark Equipment 1810288 Seal Kit
Clark Equipment 1810148 Hydraulic Control Seal Kit
Clark Equipment 1810230 Spool Kit
emecanique XCK-M Limit Switch
Gould Shawmut 60327 Fuse Holder 30 A 600 V 2 P H/K Fuse
Ushio FST12V-20W/BA/M?ED Halogen Light Bulb 1000609 12 V
ESAB 948258 Spindle Molded
Omron A3GJ-K511-G
Buss REN-200 Super-Lag Renewable Fuse 250VAC 200A
Lumberg RKWT 4-07/5 Cable Assembly
Allen Bradley 800EP-PLM3D5 Monolithic Pilot Light Green
Browning VPS-210 Pillow Block Bearing
Mallory 18710 Sonalert Audible Alarm
Allen-Bradley 800T-A Flush Pushbutton Black with (2) 800T-XA Contact Blocks
Wieland WKA/THSi6.3...U Fuse Holder (Package Of 6)
Entrelec Fuse Holder 6.3A Fuse (Package of 7)
Buss LPS-RK-70SP Low Peak Fuse 600VAC 300VDC 70A Class RK1
Opto 22 ODC5Q I/O Module (NIB)
Carr Lane 6BD (Pack of 5)
Arlington Industries 4591 Insulated Metal Grounding Bushing with Lug (Box of 5)
Rexroth 3842.535.659 Scharnier Hinge (Box of 2)
Allen Bradley 700-HK36Z24 Slim Line Relay Series B (NIB)
Amphenol-Tuchel T3507 009 Circular DIN Connector
SMC D-F9PSC Proximity Sensor
Turck CBC5-572-2M Bus Stop Cordset
GE 25 PAR36 WFL Wide Flood Lamp 12V 25W
Boston Gear 09902 YA20 Spur Gear
Cooper 5361B Single Receptacle Brown
GE P9CPLRGD Chrome Flush Pushbutton Operator Red
GE P9CPLVGD Chrome Flush Pushbutton Operator Green
Bussmann CHCC3D1 Fuse Holder 30 Amp 3 Pole CC Fuse 600V
Allen Bradley 800T-H2 Selector Switch with (2) 800T-XA Series C
Clarostat RV4NAYSD103A Potentiometer 10K OHMS
Gardner Denver 300GGD1148 Carrier
Gardner Denver 301GGD778 Load Ring
Allen-Bradley 800H-2HZ4Y Enclosure with AB Flush Pushbutton, Relay Socket
Buna 568-234 O-Rings (Bag of 35)
Allen Bradley 700-HC24A1 Relay with Allen Bradley 700-HN103 Relay Socket (Used)
Orevox R58GS Self Contained Electronic Siren 6-12 VDC (Off White)
Norgren Pressure Gauge 0-16 bar, 0-1.6 MPa
Allen Bradley 194R-NN030P3 Disconnect Switch 600V 30A 3PH (Base Only)
Allen Bradley 700DC-MB400* Miniature Control Relay (Broken Corner)
Continental Industries I.O.-ODC-RL-060 Interface Module
Browning H50B20 Sprocket
Browning 50B32 Sprocket
Browning 28LB075 Gearbelt Pulley
Microsoft RT2300 Wired Keyboard 500
Japan Servo SCNDM24B4 Double Silent Fan 24VDC 0.32A 7W
SKF 62052ZJEM Bearing
Yale Brush Set
Coil COO-376-2523
Coil 5661D1121
Lucent KS23822-L1 Plug Prong & Modular Amplifier (NIB)
Browning 2BK36H Bushed Sheave
P&W Co. 14-24 Die
Ferraz Shawmut 67661 Power Distribution Block 600V
Browning BK36H Bushed Sheave
Mars 32395 By-Pass Timer Relay
Potter & Brumfield KUP-14A15-120 Relay 120V 10A with 27E893 Relay Socket
Potter & Brumfield KAP-14DY-48 Relay 48 VDC with Idec SR3P-06 Relay Socket
Browning H 1 3/16 Split Taper Bushing
Venture MH 400W/H75/PS Uni-Form Pulse Start Bulb 400W
Browning Q1 1 7/8 Split Taper Bushing
MG Electronics AC/DC 2412-800 AC to DC Power Converter
Allen-Bradley 592-BOV16 Overload Relay Series B
Clampco 95199-0900 Hose Clamp (Used)
emecanique CA2KN-31 Control Relay 600V 10A
Parker 15R113EB Pneumatic Gas Regulator 1/4"
Square D 8501-G0-40 Control Relay 120/277V 10A W/ 8501-GD Time Delay Attachment
Fafnir 310KG Feed Clutch Shaft Bearing 1-1/4"
Thomson Industries, INC. ISO 9000 Super Smart Ball Bushing Bearing
Wilkerson F00-02-00 Air Filter
Browning H60P15 Sprocket 15 Teeth
Bosch 2 137 014 044 Motor Brushes (Qty 4)
Potter & Brumfield PM17DY 24 VDC
TOP Roto-lite 1104A1C1F2L1N1(?G) Four Word Indicator Light
System Papst 6124 Pamotor Fan with Clarostat VPR-10-F Resistor
Sprague EE-1300 Capacitor 50V (Box of 4)
PHD AVRF 1 1/8 X 6 Cylinder
mcPhilben VERW LED Exit Sign Red AC Only
Buss H60060-1C Fuse Holder 600V 60A
Siemens HED41B020 Circuit Breaker 277V 20A 1P
Siemens B130 Circuit Breaker 120/240V 30A 1P
American 1062DVS Cylinder 1.50-1-32
Ashcroft Gauge 0-100
Maska L-099X7/8 Half Coupling with L-099X3/4
Allen Bradley 800T-PB16 Illuminated Pushbutton Green Series T
Allen Bradley 800T-B Pushbutton Red Series T with 800T-XA Contact Block Series D
finder 34.51.7.024.001?0 Power Relay 24V 6A with finder 93.01.7.024 Relay Socket
finder 55.34.9.024.009?4 250V 7A Relay with finder 94.04 Relay Socket 300V 10A
Guardian 660-2C-120-A Solenoid Switch Coil
Balluff BKS-S49-1-PU-05 Cable Assembly
CAT 126-0110 Seal Group-Crank
Potter & Brumfield KHAU-17D11-24 Relay with Allen-Bradley 700-HN128 Relay Socket
Potter & Brumfield KHU-17A11-120 Relay with Allen-Bradley 700-HN128 Relay Socket
Omron H3YN-4 Timer Relay with Dayton 2A584F Relay Socket
Omron H3YN-4 Timer Relay with Omron PYF08A-E Relay Socket
Omron MY4N Relay 24 VDC with Dayton 2A584-M Relay Socket
Omron MY4N Relay 110/120 VAC with Dayton 2A584-M Relay Socket
Omron MY4N Relay with Dayton 2A584F Relay Socket
Omron MY2IN Relay with Dayton 2A584-M Relay Socket
Omron MY4IN Relay with Dayton 2A584-M Relay Socket
Omron G3FD-X03SN-VD Solid State Relay 3A DC48V with PYF08A Relay Socket
Omron MY4N Relay 24 VDC with Dayton 2A584-F Relay Socket
Browning H3/4 Split Taper Bushing
Gould Shawmut TR200R Tri-onic Fuse Time Delay 250V 200A
Hubbell HBL2710 Twist-Lock Receptacle
Camozzi 138-955TF Valve
ITC TDAB-5MIN Time Delay Timer 120V 60 Hz (Face Bent on Edge)
Square D KT-1R9 Push-To-Test Pilot Light w/ Red Plastic Lens 120/110V 60/50Hz
Bussmann CHCC Fuse Holder 600V 30A 2P Double (Black Face)
Wilkerson Q02-95-965 Auto-Fill Lubricator Adapter Assembly
Hoffman Q-1PBPCDM Qline D1 PB Minature Enclosure
Schrader Bellows 1.06RPSR00.5 Pneumatic Cylinder
Turck BS 8146-0 Connector
Mitsubishi NF30-CS No Fuse Circuit Breaker 3A 500V 2P
Mitsubishi NF30-SS No Fuse Circuit Breaker 5A 600V 2P
