所有家用电器在电机运行中,均产生不同程度的谐波电压和电流,使电动机在非正弦电压、电流下运行。高次谐波会引起电动机定子铜耗、转子铜(铝)耗、铁耗及附加损耗的增加,为显著的是转子铜(铝)耗。因为普通的交流异步电动机是以接近于基波频率所对应的同步转速旋转的,因此,高次谐波电压以较大的转差切割转子导条后,便会产生很大的转子损耗。除此之外,还需考虑因集肤效应所产生的附加铜耗。这些损耗都会使电动机额外发热,效率降低,输出功率减小,但如果使用变频电机,其能耗能减少20%-30%左右。
ABB变频电机谐波电磁噪声与震动较小
普通异步电动机由于电磁、机械、通风等因素所引起的震动和噪声变的较加复杂。变频电源中含有的各次时间谐波与电动机电磁部分的固有空间谐波相互干涉,形成电磁激振力。当电磁力波的频率和电动机机体的固有振动频率一致或接近时,将产生共振现象,从而加大噪声。由于电动机工作频率范围宽,转速变化范围大,电磁力波的频率很难避开电动机的各构件的固有震动频率。但是变频电机就可以有效解决这些问题。
ABB 3BHE021887R0101 UB C717 BE101 OVVP board
ABB 3BHE030579R0003 UNITROL 1020 BRAND
ABB UNITROL 1020 Automatic Voltage Regulator 3BHE030579R0003 /UNITROL1020
ABB 3BHE021889R0101 3BE021890P201 UF C721 BE101
ABB LCI CONV. INTERFACE GF D563 A101 3BHE046836R0101
Abb 3BHE010751R0101 Pcb Circuit Board
ABB communication module i/o PC D232A 3BHE022293R0101
Abb 3BHE021887R0101 Ovvp Pcb Circuit Board
Abb 3BHE009017R0102 Vlscd Board
ABB 3BHE029110R0111 Controller board: AC 800PEC COMBI IO BOX
ABB UNITROL 1000 Automático Voltaje Regulador 3BHE005774R0003
ABB SDCS-CON-2A 3BHE004059R0001 CONTROL BOARD
ABB 3BHE036290R0001 LXEU1004 GD C806 B01 IFT/PA110908 PCB-I-E-1132=8C12
ABB 3BHE039221R0101 HA C807 B101 LXEU1004 PCB-I-E-1131=8C12
ABB 3BHE028761R0101 GD C806 A101 LXEU1004 PCB-I-E-1133=8C12
ABB LXEU1004 3BHE036290R0002 GD C806 B02 IFT/PA110907 PCB-I-E-1129=8C12
ABB 3BHE021887R0101 PC BOARD
ABB Control Terminal PB D190A 3BHE017671R0001
ABB CVC750BE101 3BHE009681R0101 5SHY3545L0002
ABB LXEU1004 3BHE028761R1001 GD C806 A1001 PCB-I-E-1134=8C12
ABB 3BHE036290R0002 GD C806 B02 GATE DRIVE + ACL LXEU100B PCB-I-E-1128=8C12
ABB LXEU1004 3BHE028761R1001 GD C806 A1001 IFT/PA101483 PCB-I-E-1135=8C12
ABB LXEU100B 3BHE036290R0001 GD C806 B01 IFT/PA110359PCB-I-E-1130=8C12
ABB 3BHE024577R0101.
ABB 3BHE005938R6004 board
Abb 3bhe024855r0101 interface board
ABB 3BHE036342R0101 XDD501A101 Module
ABB 3BHE014070R0101 PPC905AE101 PC BOARD
ASEA BROWN BOVERI 3BHE014658R0001 / 3BHE014658R0001
Abb 3bhe028761r0101 pcb card
ABB 3BHE037649R0101 PDD500A101 Module
ABB PC d230 Communication I/O Module 3bhe019958r0101
ABB 3bhe036290R0001
ABB Circuit Board 3BHE028761R2004 GD C806 A2004
ASEA BROWN BOVERI 3BHE036346R0101 / 3BHE036346R0101
Placa Eletronica Abb 3bhe021889r0101 Uf C721 Bc101
ABB 3BHE024577R0101 PPC907BE Module
Abb 3bhe036130r0101 pcb card 3bhe036131
Abb 3bhe028767r0201 board with 3bhe028762 p104
Abb gd c806 a101 pcb card 3bhe028761r0101
ABB UDD406A 3BHE041465P201 Module
ABB 3BHE042816R0101 PCD244A101 Module
ABB 3BHE032025R0101 PCD235A101 PC D235 A101 Exciter Control Module loc.3B
ABB 3BHE020356R0101 GFD212A Module
ABB 3BHE029153R0101 UNS0119A-P Module
ABB 3BHE024855R0101 UFC921A101 Module
ABB inverter Accessories 3BHE025883R0101
ABB UAD149 3BHE014135R0011 UAD149A00-0-11 POWER SUPPLY
ABB UNITROL 1000 VOLTAGE REGULATOR 3BHE014557R0003
ABB UNITROL 1000 VOLTAGE REGULATOR 3BHE014557R0003
Abb 3bhe039221r0101 PCB Carte
Abb uns0868 Unitrol 3bhe013940r0002
ABB 3BHE033067E0102 3BHE033068P106 GCC960C102 Module
Abb pc d230 communication i/o module 3bhe019958r0101
ASEA BROWN BOVERI 3BHE003379R0003 / 3BHE003379R0003
ASEA BROWN BOVERI 3BHE037125-P201 / 3BHE037125P201
ABB 3BHE003855R0001 UNS2882A Module
ABB 3BHE037864R0106 3BHE037865P201 UFC911B106 Module
ABB UNITROL 1000 Voltage Regulator 3BHE014557R0003
ASEA BROWN BOVERI 3BHE027867R0101 / 3BHE027867R0101
ABB PPC905AE101 3BHE014070R0101 3BHE014071P201 Module
ASEA BROWN BOVERI 3BHE037124R1004 / 3BHE037124R1004
Abb pp d103 b01 control system 3bhe020455r0001
ABB UNITROL1010 UNS0121A-Z,V1/3BHE035301R1002
ABB UFC921A101 3BHE024855R0101 3BHE024856P201 Module
ABB 3BHE009017R0102 Board XV C724 BE102
Abb 3bhe024855r0101 interface board
ABB 3bhe024855r0101 Schnittstellenkarte
ASEA BROWN BOVERI 3BHE034576R0101 / 3BHE034576R0101
ABB GCD207B101 3BHE024642R0101 Module
ASEA BROWN BOVERI 3BHE028767R0201 / 3BHE028767R0201
ASEA BROWN BOVERI 3BHE014658R0102 / 3BHE014658R0102
ABB 3BHE013940R0002 Refurbished
Abb uns0868 Unitrol 3bhe013940r0002
ABB 3BHE039203R0101 GV C736 CE101 IGCT Module 3BHE039204 P201 Rev LCI CONV. INTERFACE, 3BHE046836R0102 ABB GF D563 A102 GFD563A102
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