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A61L-0001-0073
A61L-0001-0073
A61L-0001-0073
主电路是给异步电动机提供调压调频电源的电力变换部分,变频器的主电路大体上可分为两类:电压型是将电压源的直流变换为交流的变频器,直流回路的滤波是电容。电流型是将电流源的直流变换为交流的变频器,其直流回路滤波是电感。 它由三部分构成,将工频电源变换为直流功率的“整流器”,吸收在变流器和逆变器产生的电压脉动的“平波回路”,以及将直流功率变换为交流功率的“逆变器”。
整流器
最近大量使用的是二极管的变流器,它把工频电源变换为直流电源。也可用两组晶体管变流器构成可逆变流器,由于其功率方向可逆,可以进行再生运转。
平波回路
在整流器整流后的直流电压中,含有电源6倍频率的脉动电压,此外逆变器产生的脉动电流也使直流电压变动。为了抑制电压波动,采用电感和电容吸收脉动电压(电流)。装置容量小时,如果电源和主电路构成器件有余量,可以省去电感采用简单的平波回路。
逆变器
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,使逆变器停止工作或抑制电压、电流值。
——————中海德工业设备有限公司———————————
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3HAC14046-1 CD Documentation IRB1403HAC14047-1 CD Documentation IRB1400
3HAC14048-1 CD Documentation IRB2400
3HAC14049-1 CD Documentation IRB 4400
3HAC14050-1 CD Documentation IRB 6400R
3HAC14051-1 CD Documentation IRB 6400S
3HAC14053-1 CD Documentation IRB340
3HAC14054-1 CD Documentation IRB 640
3HAC14058-1 Install-Handling IRB 6600
3HAC14064-1 Product Spec. IRB 6600
3HAC14067-1 Install-Handling IRB 6600
3HAC14069-1 Install-Handling IRB 6600
3HAC14070-1 Install-Handling IRB 6600
3HAC14081-1 Maintenance IRB 6600
3HAC14085-1 Maintenance IRB 6600
3HAC14087-1 Maintenance IRB 6600
3HAC14088-1 Maintenance IRB 6600
3HAC14090-1 Repairs IRB 6600
3HAC14094-1 Repairs IRB 6600
3HAC14096-1 Repairs IRB 6600
3HAC14097-1 Repairs IRB 6600
3HAC14117-1 Rail complete axis 1
3HAC14125-1 Cust. Cable Upper Arm
3HAC14131-1 Connectionplate, base
3HAC14137-1 Locating pin axis 1
3HAC14137-2 Locating pin axis 1
3HAC14139-1 Manip. Harness ax 5
3HAC14140-1 Manip. Harn. ax 5/6
3HAC14146-1 Kit for prop. valve NCV2
3HAC14147-1 Kit for Regulator NCV2
3HAC14171-1 MOTOR UPGRADE std/foundry
3HAC14171-2 MOTOR UPGRADE clean room
3HAC14178-1 Customer I/O PS DSQC 609
3HAC14185-1 RobotStudio Interactive Tour
3HAC14185-2 RobotStudio 1.1 demo, Ger
3HAC14200-1 Spot w. Harness ax 1-3
3HAC1420-1 Control cubicle, base
3HAC14207-2 Motor incl pinion
3HAC14208-1 Cust. Harness ax. 1-3 SW
3HAC14209-3 Motor incl pinion
3HAC14210-2 Motor incl pinion
3HAC14211-2 Motor incl pinion
3HAC14214-1 Balancing Device
3HAC14219-1 Brake rel. circuit
3HAC14221-1 KM12-nut wrench adapter
3HAC14222-1 Plate
3HAC14226-1 Torque wrench adaptar
3HAC14230-1 Plate
3HAC14230-18 Damper
3HAC14230-19 Nipple straight
3HAC14230-2 Axle
3HAC14230-3 Clamp
3HAC14231-4 Plate assy
3HAC14257-1 AbsAcc Information Sign
3HAC14263-1 Protection Cover
3HAC14265-1 Power Supply Process
3HAC14279-1 Main Computer
3HAC14280-1 Gripping Clamp
3HAC14290-1 Middle Jaw
3HAC14300-1 Cable protector
3HAC14310-7 Oil sampel kit new rev
3HAC14310-8 Refil kit to 3hac14310-7
3HAC14310-9 Refill Kit
3HAC1432-1 Door Interlock Rotary sw
3HAC14363-1 DSQC 541 Backplane
3HAC14369-1 Bracket for cable clamp
3HAC14406-1 Lift turning device RV1
3HAC1441-1 Harness combi I/O
3HAC14426-1 I/O Plus User' Guide
3HAC14427-1 I/O Plus User's Guide
3HAC14428-1 I/O Plus User's Guide
3HAC1443-1 3-phase main switch 80A
3HAC14434-1 Pick Master User's Guide
3HAC14445-1 Guiding tool axis2 HD
3HAC14446-1 Guiding axis2 STD
3HAC14453-1 Hose with flange
3HAC14453-2 Plug
3HAC14457-3 LIFTEYE-SWIVEL FUNCTION
3HAC14457-4 LIFTEYE-SWIVEL FUNCTION
3HAC14459-1 Lifting accessory, motor axis 1, 4, 5
3HAC14463-1 Floor Weld Cable 7m
3HAC14463-2 Floor Weld Cable 15m
3HAC14463-3 Floor Weld Cable 22m
3HAC14463-4 Floor Weld Cable 30m
3HAC14474-1 Air outlet
3HAC14475-1 Air outlet
3HAC14485-1 Upper arm harness MH 2,5
3HAC14485-2 Upper arm harness MH 2,8
3HAC14485-3 Upper arm harness MH 3,0
3HAC14488-1 Pedestal cable CP/CS 7m
3HAC14488-2 Pedestal cable CP/CS 15m
3HAC14488-3 Pedestal cable CP/CS 22m
3HAC14488-4 Pedestal cable CP/CS 30m
3HAC14491-1 Water & air unit w profib
3HAC14493-1 Hose type HS for W&A unit
3HAC14493-2 Hose type HS for W&A unit
3HAC14494-1 Cable profib W&A unit 7m
3HAC14494-2 Cable profib W&A unit 15m
3HAC14494-3 Cable profib W&A unit 22m
3HAC14494-4 Cable profib W&A unit 30m
3HAC14503-1 Position switch
3HAC14506-1 Serial measurement unit
3HAC14507-1 Serial measurement unit
3HAC14509-1 Tension arm unit
3HAC14512-1 End Jaw
3HAC14524-1 Bus cable DB25
3HAC14525-1 Bus cable DB15
3HAC14526-1 Cable jib Drive system
3HAC14529-1 Hose support
3HAC14529-2 Bracket for hose support
3HAC14529-3 Bracket for hose support
3HAC14529-4 Hose support
3HAC14532-1 Floppy sign/supply cable
3HAC14533-1 Bus cable DB44
A61L-0001-0073
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