福州卓凱電子科技有限公司

CACR-IR05SEB

A20B-3300-0291/03B

CACR-IR05SEB

CACR-PR03AC4 ER

變頻器是把電壓和頻率固定不變的交流電變換為電壓或頻率可變的交流電的裝置，在實際的生產中有著十分廣泛的應用。那么變頻器的工作原理是什么呢？下面電工之家?guī)黄饋矸窒硪幌隆?

　　它的主電路由三部分構成，即整流器、平波回路和逆變器，并一般分為電流型和電壓型。電壓型是將電壓源的直流變換為交流的變頻器，直流回路的濾波是電容。電流型是將電流源的直流變換為交流的變頻器，其直流回路濾波是電感。它由三部分構成，將工頻電源變換為直流功率的“整流器”，吸收在變流器和逆變器產生的電壓脈動的“平波回路”，以及將直流功率變換為交流功率的“逆變器”。

　　整流器

　　近大量使用的是二極管的變流器，它把工頻電源變換為直流電源。也可用兩組晶體管變流器構成可逆變流器，由于其功率方向可逆，可以進行再生運轉。

　　平波回路

　　在整流器整流后的直流電壓中，含有電源6倍頻率的脈動電壓，此外逆變器產生的脈動電流也使直流電壓變動。為了抑制電壓波動，采用電感和電容吸收脈動電壓（電流）。裝置容量小時，如果電源和主電路構成器件有余量，可以省去電感采用簡單的平波回路。

　　逆變器

　　同整流器相反，逆變器是將直流功率變換為所要求頻率的交流功率，以所確定的時間使6個開關器件導通、關斷就可以得到3相交流輸出。以電壓型pwm逆變器為例示出開關時間和電壓波形。

　　控制電路

　　是給異步電動機供電（電壓、頻率可調）的主電路提供控制信號的回路，它有頻率、電壓的“運算電路”，主電路的“電壓、電流檢測電路”，電動機的“速度檢測電路”，將運算電路的控制信號進行放大的“驅動電路”，以及逆變器和電動機的“保護電路”組成。

Fu Zhou ZhuoKai  Electric Co., Ltd.

福州卓凱電子科技有限公司

【誠信】 【質量保證】  【價格優(yōu)惠】   

----------------------------------------------------

我公司大量現貨歐姆龍，倍加福，橫河川儀，abb,施耐德等國外多家品牌，產品涉及變頻器，儀器儀表，變送器，可編程控制器plc和人機界面，工控機及氣動閥門等。

聯(lián)系人【王工】                   

電話【059162182535】【15506917382】

e-mail：【583745937@qq.com】

QQ：【583745937】

GE FANUC A20B-9002-0310/02B A20B-9002-0310 PCB

Allen Bradley 975192 I/O Scanner Message Handling 1775-S4B -

Fuji Electric EFL-7.5G9-4 3 Phase RFI Filter F8-188549 Dented -

Phoenix Contact UMK-C64M-VS Interface Module 2970057

Rose 415172 Beamgrip Anchor 622990 Rev A -

Parker AH471157U001 Circuit Board PCB 471157 Issue 1 With Cable -

Firestone W01-358-7224 Double Convoluted Air Spring -

Timken 65225 Tapered Roller Bearing Cone

Weidmuller 998625/67 24301 I/O Interface Module

GE FANUC A06B-6089-H101 AC SERVO AMP NEW

TOTAL CONTROL 2124-128-C CONTROLLER

Sensotec 31/1430-05 31143005 31 1430 05 Load Cell

GE FANUC 193X703ADG01 193X703AD 193X

FANUC A03B-0819-C012 INPUT MODULE AIF01B

Medar 8010062 Timer 801-0062 OPPNL-410

Micro FMP-1 Circuit Board -

ISI Fluid Power MB045-301-150 MB045301150 Valve -

GTS TM006003405 Transformer -

Square D KA36100 I-Line Circuit Breaker 100 Amps 600VAC

Foxboro 13A-MS2 d/p Cell Differential Pressure Transmitter 00380198

Square D KA26250BC 250 Amp Thermal Magnetic Circuit Breaker 2 Pole 600VAC

Part 80030027 -1 Calibration Timer And Power Supply -

Kearney & Trecker 1-21299 Disk Module SCSI Interface

Emulex MT0210403 SCSI Controller Rev J -

InterLink 20-22334 Micromodule PCB 10-45469 -

GE FANUC A06B-0227-B605 #S000 8/3000 NEW MOTOR

Allen Bradley 1747-SDN/B SLC 500 DeviceNet Scanner Module 6.002

Double A QF-5M-FF-10A2 QF5MFF10A2 Directional Valve -

Fanuc A05B-2308-C370/01A ISB Unit Intrinsically Safe Barrier RJ2

GE Fanuc IC660ELB906R PC Interface Module

Allen Bradley 1771-IAD/D PLC-5 120V AC/DC Input Module Rev. A01

GE FANUC A20B-2900-0530/02A A20B-2900-0530 1 YEAR WARRANTY

NEW IN BOX

Yokogawa YS170-001/A31 Programmable Controller S2

GE FANUC TOSHIBA 30L6P41 S5524L

Vickers 633741 Coil (Pack of 10)

Miller Model S-75S Wire Feeder with Accu-Mate Gun Connection & Tough Gun

Lucent TN771D Maintenance / Test Card V7

Helm B10C401-3 B10A401-3C Power Board B10C4013 12-3964 -

Allen Bradley 1771-OAD Module 1771-0AD SD0OY9JV -

Square D 9007-AW12 Limit Switch 9007AW12 Series D (Pack of 3)

GE FANUC IC200ALG620-DC IC200ALG620 ANALOG

Browning 2TC160 Heavy Duty Sheave

Allen Bradley 1756-CNB/D ControlLogix Control Net Comm Bridge Rev. J02

Parker 110A-164-AS-0 Nichols Motor Operation 110A164AS0 -

Cutler Hammer ECN1828CHE Eaton Starter -

Thomas & Betts LS360300E Model E Circuit Breaker 300 Amps 600VAC

Cutler Hammer 9591H3268G Contactor 802 6-1-3 -

Part TP-24B Spot Welding Tips (Pack of 400)

SIEMENS 3RT1034-1BB44 CONTACTOR WITH 3RH1921-1HA22 AUXILIARY BLOCK

Square D 9007-C64BW Limit Switch 9007C64BW Series A (Pack of 10)

Timken HM807010 200809 Tapered Roller Bearing Cup

ORIENTAL MOTOR SB31MAH-ZP (LOT OF 2) BRAKE PACKS

Square D 8736SCG8V02S Reversing Starter 8736SCG8-V02S

Schneider 140 XCP 500 00 TSX Quantum Empty Module

Allen Bradley 1772-LS Processor -

CACR-IR05SEB

Joslyn Clark 452098 Rev 2 Electric Fire Pump Controller Annunciator Board

Allen Bradley 1785-L40B/E PLC-5 Processor Module Rev. W01

Alstom D-984-057810 Intensity and Fault Detection Board

Sensotec 41/B455-05-01 Load Cell -

Square D FC2IMA12C Surgelogic I-Line Transient Voltage Surge Suppressor

Timken 795 40024 Tapered Roller Bearing Cone

SIEMENS 3RW3565-0DC34 MOTOR CONTROLLER

Westinghouse NB31200F Molded Case Switch 1200 Amps 600VAC

Siemens 6RB2-000-0GB01 Board 6RB20000GB01 GE. 447700.0035.04 -

ALLEN-BRADLEY 800T-A SER. N (LOT OF 4) BLACK PUSH BUTTONS

Allen Bradley 8720MC-RPS065-VB-M Regenerative Power Supply

Omron C200H-OD219 SYSMAC 24VDC Output Module

GE IC697MEM715C 128KB CMOS MEMORY EXPANSION

LAMBDA JWS150-15/A POWER SUPPLY

Asco 310135-P 310135P Rebuild Kit

Schneider 140-XBP-006-00 Backplane 6 Slot 140XBP00600

Allen Bradley 1771-IA AC Input Module 120V 1771IA D8330 -

Watlow PDD3-JEJE-1AAA Temperature Controllers -

Magnetrol 89-7401-095 Magnetic Switch 897401095

PARKER V935LEF2100AB8B6A VALVE

Compaq J-1601A Circuit Board -

Fanuc A20B-2901-0240/02B Module A20B29010240 -

Timken JH415610 31000-0229 Tapered Roller Bearing Cup

Honeywell 51309152-175 UCN Analog Output Card HW G FW D

Barber Colman 121M-14055-131-1-08 Temperature Control -

West 1412-2-1001 Gulton Controller 141221001 -

Daytronic 3530 Indicator -

ABB 5118 M6/8 5118M68 Terminal Block (Pack of 84)

Cleveland Motion Control MO-03144-0 Tach Follow Board

P & H 79U5D2(L) Harnischfeger Control 79U5D2L 008 -

SOLA SDP4-24-100LT POWER SUPPLY

Ross 3900A0162 Valve Balance System 1"

PEPPERL + FUCHS NJL5-8GM40-E0-V1 INDUCTIVE SENSOR

Fuji Electric BU-KSA3300 BUKSA3300 Circuit Breaker 300 Amp -

ACDC Electronics 15N2.7 Power Supply -

Honeywell R7257A1028 Plug-In Rectification Amplifier -

Eaton-Kenway 0055725 A Extender Board D0055726 D0055727

Fanuc A03B-0807-C102 32pt Input Module

MITSUBISHI A1S62DA D/A CONVERTER

GE FANUC A06B-6058-H226 SERVO AMPLIFIER NEW

Allen Bradley 849A-ZOD24 Time Delay Relay 849A-Z0D24

RAYTECH RAYGPCM THERMALERT GP

Allen Bradley 194168 Circuit Board 74100-013-51 -

General Electric CR104PXC91 Contact Block (Pack of 24)

PHD AVB11/8X7,3/8R0D-E-N-Q CYLINDER

Allen Bradley 1794-TB3S/A Flex I/O Terminal BaseFUJI AH22-PWC3B073/0016 (LOT OF 4) SWITCHES

Crown CROWN 125 FC 125 FC Crown Crown 125 FC 1/8" Brazing Wire Tube Of 74

Part 473-0-0234-01 4730023401 Circuit Board M12851 -

Square D 8030 ROM-221 SY/MAX Output Module Series F2

Westinghouse 49E-3649 AB DE-ION Circuit Breaker 400 Amps 240VAC

Basler Electric 9146631100 MCU Sync Module Rev. M

Siemens SITOP 6EP1436-1SH01 Power Supply 24V 20A

Adder Technology AD180 Circuit Board 8586-070 -

Pepperl+Fuchs KFD2-UT-Ex1 1 Channel Converter

Square D 8881 B80 Circuit Board Series B 30584-196-01 Rev. 1 -

Worthington 221205LF1 Air Compressor 2nd Stage Piston Cylinder Replacement

Kearney & Trecker 5-20601 CMUX Board

Fanuc Robotics EE-1063-001 Accuflow Counter Input Module

INFINITY INFP-2 DIGITAL PANEL METER

Turck MK13-33EX0-R Multi Module MK13-33EX0-R /115VAC (Pack of 6) -

Allen Bradley 1771-OA Module 1771-0A (Pack of 6) -

Falk B/M-705677 Steel Flex (Pack of 6)

PDI FOL06674A Shorted Scr Detection Board

Wade Power Technologies 2000161 Heat Sink

CACR-IR05SEB

Bussmann FNA-1 Fuse Time Delay FNA1 (Pack of 60)

GE FANUC A06B-6055-H112 #H520 SPINDLE DRIVE

Allen Bradley 1756-A17/B ControlLogix 17 Slot Chassis Card Rack Rev. J01

Reliance Electric / Lorain ES281CMB AutoMax Companion Power Supply Module

HONEYWELL 060-J500-03 SC500 TRANSDUCER

ABB 3BSE020848R1 S800 I/O Termination Unit TU841 PR:D

CTC 2600XM-10 2600XM 10 SLOT RACK CONTROL TECHNOLOGY CORPORATION

Photoswitch 8-299 Relay (Pack of 3) -

Rose 506213 ROPOD Tripod Fall Rescue Work System

Trumpf 22-13-68-00/04 2213680004 -

Square D 8881-B42 Circuit Board C30584-139- S30586-523-80 -

Schneider TSXP57202 Premium Processor with Memory Card and PCMCIA Module

O-Z/Gedney SR-507 SR507 Strain Relief Connector 1/2" (Pack of 75)

Square D 8030 RIM-331 32 Function 24VDC Input Module Series G1

Roll A Matic 8661283T-117 8661283T117 Rebuilt - Refurbished

Rosemount Analytical 54EPH/ORP-01 Model 54e PH/ORP Analyzer / Controller

Allen Bradley 1771-IAD Module 1771-1AD (Pack of 6) -

Part 050629 Circuit Board Rev A2 201181 C Rev A4 - Refurbished