IC698CPE010-FL模塊
IC698CPE010-FL模塊
IC698CPE010-FL模塊
0 引 言
半橋DC/DC變換器結構簡單，控制方便，非常適用于中小功率場合。硬開關變換器高頻時開關損耗很大，嚴重影響其效率。軟開關技術可降低開關損耗和線路的EMI，提率和功率密度，提高開關頻率從而減小變換器體積和重量。傳統半橋變換器有兩種控制方法，一種是對稱控制，一種是不對稱互補控制。本文主要分析實現半橋DC/DC變換器軟開關的PWM控制策略。
1 控制型軟開關PWM 控制策略
控制型軟開關半橋DC/DC變換器不增加主電路元器件（可增加電感電容元件以實現軟開關條件），通過合理設計控制電路來實現軟開關。圖1給出4種控制型軟開關半橋DC/DC變換器的PWM 控制策略。
圖1 控制型軟開關PWM 控制策略
1.1 不對稱互補脈沖PWM 控制
開關管的控制脈沖不對稱互補，采用此控制策略的傳統不對稱半橋變換器已廣泛應用于中小功率場合。其原邊開關管實現ZVS的方式有2種：負載電流ZVS方式和勵磁電流ZVS方式［1］。其優點是：兩個開關管都可實現ZVS；一些可改善移相全橋變換器滯后臂軟開關條件的措施也可用于不對稱半橋變換器；不存在硬開關中的震蕩問題；與移相全橋變換器相比，無循環能量。其缺點是：開關管電壓應力和開關管軟開關條件不一致，上管較難實現軟開關；整流管電壓應力不一致，且隨占空比變化，一些應用場合一個整流管電壓很高，器件較難選擇；輕載時會失去軟開關條件；變壓器直流偏磁，負載越重占空比越小，偏磁越嚴重；非常不適用于寬輸入或寬輸出電壓的應用場合。
1.2 移相脈沖PWM 控制
采用此控制策略的半橋也稱為雙有源半橋［2，3］。
此控制策略與傳統的移相全橋拓撲類似，區別在于移相的兩個橋臂分布在變壓器的原副邊。此拓撲中，變壓器的漏感是中間儲能元件。原副邊半橋各產生一個占空比為50%的方波，通過調節輸出兩個橋之間的移相來控制變壓器漏感的能量從而調節輸出電壓。此拓撲可實現全負載范圍的軟開關，同時輸出又能獲得同步整流。其缺點是：循環能量非常大，輸出電流紋波大。為了改善輸出電流紋波大的缺點，移相ZVS半橋電路被提出［4］。
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ALLEN BRADLEY 150-A24FB SER. A SMART MOTOR CONTROLLER *NEW IN BOX*
ALLEN BRADLEY 810-A26A INVERSE TIME CURRENT RELAY SERIES B NEW CONDITION
Allen Bradley 284D-FHD4P0Z-10-CR ArmorStart Drive and Base 4a 480v 280d-fn-10-c
ALLEN BRADLEY 350-BAV RQAUS1 350BAV
NEW ALLEN BRADLEY UPV2000-64K MEMORY BOARD UPV200064K
Allen Bradley Bulletin 1326 AC Servo Motor 1326AB-3515G-M2K5L
ALLEN BRADLEY PANELVIEW PLUS 1250 2711P-T12C4B2 Series A Rev F Tested
NEW OPEN BOX ALLEN BRADLEY 20AC022A0AYNANNN POWERFLEX 70 15HP SERIES A
ALLEN BRADLEY DC CONTROLLER DRIVE 230V 240V 1.5KW 2HP 2 HP 1395-A63-C1-P51-X1
NEW ALLEN BRADLEY 284D-FHB7P6Z-25-RR-DB-SB CONTROL MODULE WITH 280D-FN-25-C
ALLEN BRADLEY 8200 1975 CNC AMPLIFIER UNIT 10A NOS CONDITION / NO ORIGINAL BOX
ALLEN BRADLEY SLC 500 RACK WITH COMPONENTS INCLUDING PROSOFT PROFIBUS
ALLEN BRADLEY 2098-DSD-020-SE SER. C SERVO DRIVE *NEW NO BOX*
ALLEN BRADLEY 20BD034A0AYNANC0 SER. E POWERFLEX 700 DRIVE 20BD034A0AYNANC0
ALLEN BRADLEY 1336151141 PC BOARD DRIVER (REMANUFACTURED) **
Allen Bradley 2098-DSD-030 Ultra3000 Servo Drive Motor Inverter Amplifier NEW
ALLEN BRADLEY 1336S-BRF100-AA-EN *NIB*
ALLEN BRADLEY 1326AS-B460F-21-K4 RQAUS1 1326ASB460F21K4
ProSoft, MVI56-MBP, Communication Module Modbus Allen Bradley Control logix NEW
Allen Bradley MPL-B4540F-MJ24AA SERVO MOTOR
Allen Bradley Systems Module, 8520-1S5A-BAT-EX4-T1-Y-4-5-7, , WARRANTY
ALLEN BRADLEY MAX-AE2-R MAX CONTROL 2 AXIS MOTION CONTROLLER PC-622-0790
ALLEN BRADLEY 509-AUB-1 EXPLOSION PROOF STARTER 460-575VAC SIZE 0 TYPE 7&9
ALLEN BRADLEY 20BD3P4A3AYYANC0 RQAUS1 20BD3P4A3AYYANC0
Allen Bradley, 20AD8P0A3AYNACC0, AC Drive PF70 480VAC 3PH VFD Motor Inverter NEW
NIB ALLEN BRADLEY 1785-LT2 SER. A PROCESSOR F/W. REV. J, 96736875, 1785LT2
Allen Bradley 1336F-C040-AN-EN 1336 AC Drive 45KVA 500-600V 44A Series B *NEW*
Allen-Bradley 1336VT AC Drive 1336VT-B075-EOT-L3-S1 75HP
ALLEN-BRADLEY Versaview 1200P INDUSTRIAL COMPUTER 6181P-12NPXP SERIES E
Allen-Bradley 2711-TC1-B PanelView Touch Screen
Allen Bradley 350BAV NSNP **GENUINE** AB 350 BAV
Allen Bradley 2090-SCVG100-0 Fiber Optic Cable Ser. B NEW
Allen Bradley 20AD011A3AYNADC0 PowerFlex 70 AC Drive varible Speed Motor NEW
Allen-Bradley PowerFlex 700 AC Drive 20BD040A0AYNANN0 30HP
Allen-Bradley 2711PC-T10C4D8 PanelView Plus Compact 1000 Terminal
One New In Box AB Allen Bradley Inverter 22C-D060A103 22CD060A103
NEW IN BOX ALLEN-BRADLEY SMC-2 SMART MOTOR CONTROLLER 150-A54NB SERIES A
Allen Bradley PLC-5/V30B Processor Module 63-0063-03
Allen Bradley SIZE 6 Cat # 709-G0D Motor Starter 709-GOD (27343)
NEW ALLEN BRADLEY 2100 15 HP SOFT AC DRIVE FUSIBLE MOTOR STARTER MCC MCCB BUCKET
*NEW SEALED* Allen Bradley 1788-EN2DN A EtherNet/IP / DeviceNet Linking Device
ALLEN-BRADLEY BULLETIN 1388 DC SERVO CONTROLLER
Allen-Bradley Ethernet Processor Module 1785-L40E PLC-5/40 Series C FMW Rev H
Allen-Bradley 1326AB-B740C-21 AC servo motor 2000rpm series C - 60 day warranty
Allen-Bradley 1769-L35E CompactLogix Controller Ser A
Allen Bradley, 20AD011A0AYNADC0, PowerFlex 70 AC Drive 7.5HP 480VAC NEW
ALLEN BRADLEY 520F-COD SER. C REVERSING STARTER (AS PICTURED) *NEW NO BOX*
ALLEN BRADLEY 1747-L40E SERIES B PROCESSOR UNIT *NEW IN A BOX*
ALLEN BRADLEY PANELVIEW 550 2711-B5A1L1 SER. G REV. A FRN. 4.20 INTERFACE **
ALLEN BRADLEY COMMUNICATION DRIVE BOARD 163209 REV 10 REMANUFACTURED!
2711PC-T10C4D8 2711PCT10C4D8 Ser A Allen Bradley Panelview Plus (New)
Allen Bradley Panelview 550 2711-B5A1L1 Ser F Rev G FRN 3.30
Allen Bradley 809-A22E Ser A Instantaneous Trip Relay
ALLEN BRADLEY 20AD2P1A3AYYNDNN SER.A POWERFLEX *NEW OUT OF A BOX*
NEW SEALED ALLEN BRADLEY 440L-P4K1440YD LIGHT CURTAIN SET COMPLETE
Allen-Bradley 2711-K5A5 PanelView 550
ALLEN BRADLEY 1791-24A8 SER. B I/O MODULE *NEW IN BOX*
REPAIRED ALLEN BRADLEY 635533-9002 PANEL INTERFACE MODULE 635533 REV. E2
ALLEN BRADLEY MPL-B430P-MJ72AA RISCN1 MPLB430PMJ72AA
Allen Bradley NEMA COMBINATION STARTER W/ DISCONNECT 512M-BDCD-13-24-90011
Allen Bradley 1769-L32E /A CompactLogix Ethernet Processor
ALLEN-BRADLEY 20HP AC DRIVE 1336S-B020-AA-EN-HA1-L6 SERIES C
Allen Bradley Panelview 600 2711-B6C15 Ser C Rev A FRN 4.44
ALLEN BRADLEY 2711E-K12C6 PANELVIEW 1200E SER C OPERATOR INTERFACE D546493
ALLEN BRADLEY AC DRIVE 208D8P0A3AYNANC0 SER. B *NEW IN BOX*
Allen-Bradley 1785-L40E PLC-5/40E EtherNet/IP Controller
ALLEN-BRADLEY PANELVIEW 1000 OPERATOR INTERFACE 2711-T10C8 SERIES F
ALLEN BRADLEY 2711E-K12C6X PANELVIEW 1200E SER C REV C INTERFACE PANEL D546519
ALLEN BRADLEY 80190-180-01-R RQANS2 8019018001R
ALLEN-BRADLEY MPM-B2152F-MJ72AA SERVO MOTOR
NEW IN BOX ALLEN-BRADLEY 1HP POWERFLEX 700 DRIVE 20BD2P1A0AYNANN0 SERIES A
ALLEN BRADLEY 1326AB-A3E-11 NEW AC SERVO MOTOR 3000 RPM 122245 1326ABA3E11
ALLEN BRADLEY 1336-B015-EAE-S1 RQAUS1 1336B015EAES1
ALLEN BRADLEY 150-A97NA-ND RQAUS1 150A97NAND
ALLEN BRADLEY 2364-SPE12A RQANS1 2364SPE12A
ALLEN BRADLEY 702-FOD RQAUS1 702FOD
ALLEN BRADLEY 1336F-CWF50-AN-EN RQAUS1 1336FCWF50ANEN
ALLEN BRADLEY 20AE6P1A3AYNNRNN RQAUS1 20AE6P1A3AYNNRNN
New Allen Bradley 2711-B6C8 /B 2711B6C8 PanelView 600 Color
ALLEN BRADLEY RN-809.44.00 // 809.44.00 CONTROL BOARD CCRA
NEW SEALD Allen-Bradley 2094-BM05 Axis Module 400/460V, 49A Inverter
Allen Bradley 20BC030A0AYNANC0 AC DRIVE POWERFLEX 700
Allen-Bradley 1336 Plus AC Drive w/ Bypass 1336S-B040-AN-EN-L6 40HP 3Ph
ALLEN-BRADLEY 6186-M17ALTR SER.E REV A VERSAVIEW 1700M 17" TOUCH SCREEN MONITOR
Allen Bradley Ultra Servo Drive 1398-DDM-009X-DN Ser A Ver 1.39
Allen-Bradley Centerline 2100 Size 1 FVNR MCC Bucket 2100U-WLFLS47/11
NEW ALLEN BRADLEY 1336F-BRF75-AN-EN-HAS2 DRIVE 7.5 HP 1336F-BRF75-AN-EN-HA
ALLEN BRADLEY 2711-KA1 SERIES C PANELVIEW TERMINAL FRN 4.00 **
ALLEN Bradley SMC Dialog Plus 150-B54NBD w/ 4088-490-01-S1FX
ALLEN BRADLEY GUARDSHIELD SAFETY LIGHT CURTAINS NEW
Allen-Bradley 1336 Plus AC Drive w/ Bypass 1336S-BX040-AX-EN-L6 40HP 3Ph
ALLEN BRADLEY 8510A-A22-A2 AC SPINDLE CONTROL (AS PICTURED) **
ALLEN BRADLEY 1326AB-A2E-11 AC SERVO MOTOR .8 KW 3000 RPM *NEW NO BOX*
ALLEN BRADLEY 1775-MED CORRECTING RAM MEMORY BOARD NOS CONDITION / NO BOX
Allen Bradley AB 1333 YAC ADJUSTABLE FREQUENCY AC DRIVE Series B New
Allen Bradley CompactLogix 1769-L23E-QB1B 1769-IF8, 2010 Very Nice Tested
ALLEN BRADLEY 15KW/20HP DC DRIVE 1395-B69-C1-P12 SER. B *FOR PARTS/REPAIR* #1
NEW FACTORY SEALED Allen Bradley 2711-B5A1 /H FRN 4.46 PanelView 550 Operator
New Sealed Allen Bradley 1769-L24ER-QBFC1B /A CompactLogix Enet Controller
Allen Bradley 8510A-A11-A2 Digital Ac Spindle Drive. -
ALLEN-BRADLEY 2711-K10C20 SERIES E FRN 4.46 PANELVIEW 1000 - -FREE SHIPPING
Allen Bradley AC Servo Motor MPL-A4530F-SK22AA W/Planetroll Gearhead Ratio:3
ALLEN BRADLEY 1770FL KEYBOARD, NIB
*NEW* Allen Bradley AB 2711-K6C1 /C PanelView 600 Operator Terminal WARRANTY
ALLEN-BRADLEY 6181P-15NS2KH SER A REV A POWERVIEW PLUS 1500P --FREE SHIPPING
REBUILT ALLEN BRADLEY AC SERVO MOTOR 1000 RPM OUTPUT 3.0 KW 8500-B30-L1BN
New In Box AB Allen-Bradley 22C-B049A103 POWERFLEX 400 11 KW
ALLEN BRADLEY 2.2kW 3.0HP SERVO MOTOR MPL-B430P-SJ72AA / PN-12224 NIB
NEW ALLEN BRADLEY 2760RB/A FLEXIBLE INTERFACE MODULE
2014 New Sealed Allen Bradley 1771-IFE /C PLC-5 Analog Input 1771IFE 17711FE
NOB Stober GearHead for Allen-Bradley/ Rockwell Automation P521SPR0040MT
Allen Bradley Cat. #: 2711-T7C4D1 PanelView 700 Plus. 2771P-RP1. Tested. W3
#2 Control panel enclosure Allen Bradley SLC 500 modules motor starter more
ALLEN BRADLEY MPL-B430P-MK24AA SERIES A LOW INTERTIA SERVO MOTOR 400V 5000RPM
NEW ALLEN BRADLEY 5150-RS2 REMOTE I/O SCANNER MODULE
New Allen Bradley 1756-PLS /B ControlLogix Programmable Limit Switch Module
Allen Bradley 8510A-A11-A2 Digital Ac Spindle Drive
ALLEN-BRADLEY 2090-DSD-HV100X-DN Indexing Ultra 3000i Servo Drive 46A, DeviceNet
ALLEN BRADLEY T70 PLANT FLOOR WORKSTATION 6170-EDCD1A1EBZZ-A
ALLEN BRADLEY PANELVIEW PLUS 700 ASSEMBLED TERMINAL 2711P-T7C4D1 SER. A, REV. G
Allen Bradley SMC Flex Drive 150-F85NBD Series B 60 HP 460 Volt
Allen-Bradley SP-142756 Armature Pole Cell SP142756
ab allen bradley 1336-b010-eod-l1 ac motor soft start drive 460v 380v 460v 10hp
Allen Bradley 20-COMM-R Series A Remote I/O Adapter Firmware 1.010 Tested
Rockwell Automation Allen-Bradley 196258 Main Control Board PCB 185615-01
allen bradley 1336s-bx060-an-en-ha1-L5 60hp ac drive 380v 400v 460v 480v 240 230
allen bradley 1336s-bx060-an-en3-ha1-L5 60hp ac drive 380v 400v 460v 480 240 230
Allen-Bradley DATALiner 2706-E43J128B1 SER. D REV. D
ALLEN BRADLEY1336S-B010-AA-EN4-HA2-L5 380-480V 1336 PLUS DRIVE
Allen Bradley 1336S-B007-AA-EN5-HA1 AC Drive In Factory Box
Allen-Bradley PowerFlex 70 VFD 20AD034A3AYNANC0 25 HP 18M Warr.
Allen Bradley Powerflex 700 20BD034A3AYNACC0 AC Drive 25HP 480V Tested Series B
ALLEN-BRADLEY 6181-CHBCBBZZZ SER B / PC BOX - INDUSTRIAL PC
Allen-Bradley 2803-VIM1 One Year Warranty !
Allen Bradley Versaview CE 1000H 2711P-T10C4D5 2711PT10C4D5 2711-RP5
Allen-Bradley 1769-L33ERM CompactLogix Ethernet Controller
NEW 2012 Allen Bradley 20-COMM-R Series A Remote I/O Adapter Firmware 1.010
ALLEN BRADLEY 1395-A65-C1-P10-X1/B DC DRIVE 5.0HP 230VAC INPUT REGEN ***XLNT***
ALLEN BRADLEY 6180-ABEBDBACABZ RQAUS1 6180ABEBDBACABZ
ALLEN BRADLEY N-3412-2-H00AA RQAUS1 N34122H00AA
Allen-Bradley PowerFlex 70 VFD 20AD034A3AYNANNN 25 HP 18M Warr.
Allen-Bradley PowerFlex 70 VFD 20AD034A3AYNANCN 25 HP 18M Warr.
Allen-Bradley PowerFlex 70 VFD 20AD034A3AYNANN0 25 HP 18M Warr.
Allen-Bradley PowerFlex 70 VFD 20AD034A3NYNANNN 25 HP 18M Warr.
Allen-Bradley PowerFlex 70 VFD 20AD034A3NYNANCN 25 HP 18M Warr.
Allen-Bradley PowerFlex 70 VFD 20AD034A3NYNANC0 25 HP 18M Warr.
Allen-Bradley PowerFlex 70 VFD 20AD034A3NYNANN0 25 HP 18M Warr.
ALLEN BRADLEY PANELVIEW 550 2711-B5A1 SER. H REV. B FRN. 4.41 *NEW IN BOX*
ABB 57287977 VD86 and 57088476 SCAN Video Controller Allen Bradley Stromberg
ALLEN BRADLEY 8600-PS3D RQAUS1 8600PS3D
ALLEN BRADLEY 1756-M2 RQANS1 1756M2
Rblt Allen-Bradley 1336 VFD 1336-B015-EAE-FA2-L3-S1 15 HP 480 V 1yr War
Allen Bradley 2711-B6C15 Ser B Panel Vew 600 2711B6C15
Allen-Bradley / AC SERVO MOTOR / F-4050-Q-H00AA SER.A
ALLEN BRADLEY 1397 DC DRIVE 1397-B010N-DS050-FS2004-HAP-MB018-PE
ALLEN BRADLEY 2711-B6C9 PANELVIEW 600 OPERATOR INTERFACE
Allen Bradley 1336-WC-035 Dynamic Brake Chopper 35 Amp 575V ! NEW !
Allen bradley 1336 plus 2 Sensorless Vector brf75-aa-en-has2 L6
ALLEN BRADLEY 2711-B6C16 RQAUS1 2711B6C16
1 PC AB Allen-Bradley 1756 L62 B 1756-L62 In Good Condition
ALLEN BRADLEY 2705-P11J1 RQAUS1 2705P11J1
ALLEN BRADLEY 140U-JD6D3-D22 RQANS1 140UJD6D3D22
ALLEN BRADLEY 6182-CICAZC RQAUS1 6182CICAZC
*NEW SEALED* Allen Bradley 1771-ODZ Isolated AC Output Module
Allen Bradley 1398-DDM-019-DN Servo Drive | 3 DAY Repair Service Guaranteed!
Allen Bradley MPF-B4540F-MJ74BA | Food Grade AC Servo Motor
NEW Allen Bradley Size 5 Starter FOB FOD Nema 509 Series A 200 HP 270 Amps 120V
ALLEN BRADLEY SERIES B SERVO DRIVE 2098-DSD-020-SE NNB
ALLEN BRADLEY 8600-1967Z, A-B 327022J 1RL CT
Allen Bradley MPL-B320P-MJ74AA | AC Servo Motor with Brake - Mfg 2016 *NIB*
*NEW* Allen Bradley 2711P-T10C4D1 /A PanelView Plus 1000 Terminal, Ethernet, DC
ALLEN BRADLEY 8520-ENC3 RQAUS1 8520ENC3
2016 FACTORY SEALED Allen Bradley 1784-U2DHP USB to Data Highway Plus Cable
**FREE OVERNIGHT SHIPPING! BRAND NEW ORIGINAL BOX! Allen Bradley 1769-L30ERM /A
NEW! Allen Bradley MPL-B330P-MJ74AA | P/N: PN-12149 | Servo Motor W/ Brake
Allen Bradley Kinetix MPL-B320P-MK22AA Servo Motor | NEW!
Allen Bradley 2711P-T10C4D1 | PanelView Plus 1000 - Only 80 Hours of Use
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