140XCP60000 Quantum

逆變電路的作用是在控制電路的作用下，將直流電路輸出的直流電源轉(zhuǎn)換成頻率和電壓都可以任意調(diào)節(jié)的交流電源。逆變電路的輸出就是變頻器的輸出，所以逆變電路是變頻器的核心電路之一，起著非常重要的作用。

常見的逆變電路結(jié)構(gòu)形式是利用六個功率開關(guān)器件(GTR、IGBT、GTO等)組成的三相橋式逆變電路，有規(guī)律的控制逆變器中功率開關(guān)器件的導(dǎo)通與關(guān)斷，可以得到任意頻率的三相交流輸出。

通常的中小容量的變頻器主回路器件一般采用集成模塊或智能模塊。智能模塊的內(nèi)部高度集成了整流模塊、逆變模塊、各種傳感器、保護(hù)電路及驅(qū)動電路。如三菱公司生產(chǎn)的IPMPM50RSA120，富士公司生產(chǎn)的7MBP50RA060，西門子公司生產(chǎn)的BSM50GD120等，內(nèi)部集成了整流模塊、功率因數(shù)校正電路、IGBT逆變模塊及各種檢測保護(hù)功能。模塊的典型開關(guān)頻率為20KHz，保護(hù)功能為欠電壓、過電壓和過熱故障時輸出故障信號燈。

逆變電路中都設(shè)置有續(xù)流電路。續(xù)流電路的功能是當(dāng)頻率下降時，異步電動機(jī)的同步轉(zhuǎn)速也隨之下降。為異步電動機(jī)的再生電能反饋至直流電路提供通道。在逆變過程中，寄生電感釋放能量提供通道。另外，當(dāng)位于同一橋臂上的兩個開關(guān)，同時處于開通狀態(tài)時將會出現(xiàn)短路現(xiàn)象，并燒毀換流器件。所以在實際的通用變頻器中還設(shè)有緩沖電路等各種相應(yīng)的輔助電路，以保證電路的正常工作和在發(fā)生意外情況時，對換流器件進(jìn)行保護(hù) .

40,Momentary N/C N/O ON-(OFF) OFF-(ON) Switch 220V,B22E

40,Steel Momentary N/O OFF/(ON) White Bulb Switch,W11D

10 pcs MRF286 Power Mosfet N-Channel RF Transistor

VA710 Process Calibrator Thermocouple J,K,T,E,R,S,B,N

50,N male plug to SMA female jack straight adapter,C24 

10 MRF286 Motorola Power Mosfet N-Channel RF Transistor

Digital Handheld Force Gauge,Push Pull Gauge,N/KG/LB

ADLINK HSL-DO32-M-N Robust HSL 32ch PNP sourcing output

ADLINK HSL-DI32-M-N Robust HSL 32ch

90X90 87 Stencil Template G6100 NF-430-N-A2 G86-630-A2

90X90 87 Stencil Template G6100 NF-430-N-A2 G86-630-A2

Parker compumotor S57-83 p/n 87-011279-01E

Sick CLV412-2010 P/N: 1 017 538

ASYST fire door P/N: 9701-0471-03 Rev: A

Super Vexta Driver UDX5107N w/ PH544-NA (31-N)

Super Vexta 5-Phase Driver UDX 5128 N 

50PCS,Power N Mosfet IRFP9140N Transistor TO-220

1.5KW AIR-COOLE MOTOR SPINDLE ENGRAVING MILLING GRIND n

200CPS,Power N Mosfet IRF634 IRF 634 Transistor TO-220

Anritsu MA4603A Power Sensor S/N:M05429

Agilent HP 08487-60001 2.4mm(f)-N(m) Adapter 50MHz

Super Vexta 5-Phase Driver UDX 5128 N 

HP Agilent 5063-9299 NFTS Power Limiter Type N "Mint"

RS-PSU-450-AC1N RSPSU450AC1N P/N.: 44192-07A 4419207A

40,Stainless Mom. N/O N/C ON-(OFF) OFF-(ON) Switch,22

200,N/C N/O Momentary Blue Lighted Push Switch 12V,B16

200,N/C N/O Momentary Yellow Light Push Switch 12V,Y16

200,N/C N/O Momentary Red Lighted Push Switch 12V,R16

200,N/C N/O Momentary Green Lighted Push Switch 12V,G16

PACK10,MRF286 Power Mosfet N-Channel RF Transistor

10pcs,MRF286 Power Mosfet N-Channel RF Transistor

NEW 2PCS A50L-0001-0275#?N 6MBP100NA060 6MBP100NA-060

Digital Handheld Force Gauge,Push Pull Gauge,N/KG/LBne?w

Ge Fanuc IC693APU301 N Axis Position Module 1 Axis

100pcs, 2SK2837 K2837 N-CHANNEL TRANSISTOR NEW

Verity SDC2004 P/N: 1006176

Rion VM-80 Vibration Meter (S/N #19001098)

GSI lumonics P/N: PA036630X Rev: C

Sony CCU-355 P/N: A-7515-337-A board

200PCS,Power N Mosfet IRF9520 Transistor TO-220

Siemens SD EA repick controller unit P/N: 00732029-01

Fusion systems F300 control card P/N: 038039

Siemens 00310945-01 RFK-N

50,Square Indicator 12V Signal Light N.O N.C Switch,S1B

CYMER Laser Technologies P/N.04-05760-0 Backplane Board

50,Square Indicator 12V Signal Light N.O N.C Switch,S1B

50,Square Indicator 12V Signal Light N.O N.C Switch,S1B

Par systems backplane P/N: 07248000

Jetter N-SM 2 power module

Keyence N-400 (3 units) with software

10x nVIDIA North Bridge NF SPP100 SPP 100 N A2 BGA IC

10x nVIDIA North Bridge NF 6150 N A2 BGA IC Chipset

10x nVIDIA North Bridge BGA IC Chipset NF G6100 N A2

10,Telemecaniqu?e Emergency Stop Mushroom N/C Switch,ZB

100PCS,N-MOS IRF3703 IRF 3703 Transistor TO-220AB

100PCS,N-MOS IRF3703 IRF 3703 Transistor TO-220AB

VARIABLE FREQUENCY DRIVE INVERTER VFD 3HP 2.2KW 10A n

NEW 40W CO2 LASER POWER SUPPLY / ENGRAVER / ENGRAVING n

200PCS,Power N Mosfet IRF640N Transistor TO-220

Shimadzu parts P/N: 638-77137-01

Kaman instrumentation SMU 9000-20N 3CH P/N 854502-004

Cogent lightwear fiber P/N: B1-90043

Keyence N-400 New

50 pcs N Channel MOS FET Transistor 2SK2699 K2699

FINGERPRINT NETWORK EMPLOYEE TIME CLOCK TC100 n

10X nVIDIA NF-SPP-100-N-A2 BGA Mobile North Bridge

10X nVIDIA NF-SPP-100-N-A2 BGA Mobile North Bridge

NEW 40W CO2 LASER TUBE CUTTING ENGRAVING WATER-COOLED n

VARIABLE FREQUENCY DRIVE INVERTER VFD 2HP 1.5KW 7A n

100 pcs IRFP460 IRFP 460 "IR" Power MOSFET N-Channel

15,Telemecaniqu?e Mushroom N/O Push Button Switch,XB2A 

20, Telemecanique ZB2-BE101C Emergency Stop N/O Switch 

500,Push Momentary N/O Switch Car Marine Boat 3V-36V,K3

50,Type N Male to Regular SMA Male Connector Adapter,C9

200CPS,Power N Mosfet IRF530 IRF 530 Transistor TO-220

200PCS,Power N Mosfet IRFZ24N IRFZ24N Transistor TO-220

200PCS,IRF3710 "IR" Power MOSFET N-Channel 57A 100V

Vacuum Plumbing Part Cal-Weld P/N 10-142295-00/B

50PCS,LOT RP SMA RPSMA Female Type N Male Connector,C23

SHIMADEN SR92 Temperature Controller SR92-81-N-90-10?00 

nVIDIA GeForce GF-Go7600-N-A2 G73M GPU BGA Chipset X5pc

FUJI IPM A50L-0001-0267#?N 7MBP75RA060-01 75A/600V/7U

200PCS,Power N Mosfet IRF630 Transistor TO-220

6 pcs MRF286 Power Mosfet N-Channel RF Transistor

Fastec OSM-T3 IO-Ident 4 A/N: 500299

Thornton 200pH P/N: 6322-1 Ver. 1.2

MITSUBISHI Melsec PLC Q61P-A2 Power Supply (31-N)

50PCS, 2SK1464 K1464 N-Channel MOSFET TO-220

50 pcs N Channel MOS FET Transistor 2SK373 K373 TO-92

150X FDS8880 N-Channel MOSFET Sony MBX-165 VGN-FZ21E

Agilent 1250-1529 Adapter Type-N (f) to Type-N (f) 75

50pcs N Channel MOS FET Transistor 2SK1512 K1512 TO-247

5m 5050 300LEDs RGB Flash Strip+44 key remote+power N

Medical battery for Siemens Drager P/N: MS14490

HP/Agilent 8120-4781 Cable Assembly - Coaxial Type-N

100 pcs IRFP250 IRFP250N "IR" Power MOSFET N-Channel

5m 5050 300LEDs RGB Flash Strip+44 key remote+power N

5m 5050 300LEDs RGB Flash Strip+44 key remote+power N

1 x Power Mosfet N-Channel Transistor Motorola MRF151G

5X NVIDIA GF-GO7200-B-N-A?3 BGA IC Chipset With Balls

1769-L16ER-BB1B

1769-L18ER-BB1B

1769-L18ERM-BB1B

1769-L23-QBFC1B

1769-L23E-QB1B

1769-L23E-QBFC1B

1769-L24ER-QB1B

1769-L24ER-QBFC1B

1769-L27ERM-QBFC1B

1769-L30ER

1769-L30ER-NSE

1769-L30ERM

1769-L31

1769-L32C

1769-L32E

1769-L33ER

1769-L33ERM

1769-L35CR

1769-L35E

1769-L36ERM

1769-NPK18

1769-NPKSDN

1769-OA16

1769-OA8

1769-OB16

1769-OB16P

1769-OB32

1769-OB32T

1769-OB8

1769-OF2

1769-OF4

1769-OF4CI

1769-OF4VI

1769-OF8C

1769-OF8V

1769-OG16

1769-OV16

1769-OV32T

1769-OW16

1769-OW8

1769-OW8I

1769-PA2

1769-PA4

1769-PB2

1769-PB4

1769-RD

1769-RL1

1769-RL2

1769-RTB40AIO

1769-RTB40DIO

1769-RTB45

1769-RTBN10

1769-RTBN18

1769-SDN