分布式供電無法實現(xiàn)
  一種可行的解決方案是，盡量縮短低壓直流傳輸導線的長度，將交流/直流電源設置在負載附近。 但這需要改變整個系統(tǒng)的供電方式，由“集中供電”改為“分布供電”，需要安排更多的交流“取電 點”，或者采用長距離的 230Vac 或 400Vac 交流傳輸線。在很多應用中，考慮到低壓安全要求或系統(tǒng) 設計要求等，無法實行這種方案。

普通的直流/直流轉(zhuǎn)換器方案
另一個可行的解決方案是在長距離低壓直流導線末端串入一臺直流/直流轉(zhuǎn)換器，作為“電壓補償 器”，以補償導線上的壓降引起的電壓波動。并不是所有的直流/直流轉(zhuǎn)換器都適用于此類應用，非常 重要的是，
1) 直流/直流轉(zhuǎn)換器要有較寬的輸入電壓范圍，允許的輸入低電壓要很低。
2) 直流/直流轉(zhuǎn)換器自身不能有過高的輸入(起動) 電流需求。

PULS 普爾世的電壓補償器 CD5.241-L1
  PULS 普爾世在開發(fā)電壓補償器“CD5.241-L1 ”時，認真考慮了這些應用需求，設計了 14-35Vdc的寬輸入電壓范圍，和主動式浪涌電流抑制以及“軟”起動功能以避免普通直流/直流轉(zhuǎn)換器起動時的 輸入峰值電流。可以下述應用為例來說明它的特性。

ABB 900060  DDR Switch cable 
ABB 3HAB2136-1  Teach pendant S3 
ABB 3HAB2151-1  Teach pendant S3 
ABB 3HAB2477-1  Floppy drive S2/S3 
ABB 3HAB2480-1  Floppy drive S4 
ABB 3HAB5386-1  Teach pendant S4 
ABB 3HAC14441-9  CMOS-battery 
ABB 3HNE00311-1  Teach pendant S4C 
ABB 3HNE00313-1  Teach pendant S4C 
ABB 4944016-2  Battery S3 
ABB 4944026-2  Battery memory board S2 
ABB YB161100-LH  Teach pendant S2 
ABB YB560100-EA  Teach pendant S3 
ABB YB560101-LA  Power supply 
ABB YT212002-BA  Rectifier 
ABB YT212002-C  Rectifier 
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ABB YB560103-CC DSQC236C DriveUnit 
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ABB 3HAB 2236-1 DSQC321 4MB Card 
ABB 3HAB 5956-1 DSQC323 8MB Card 
ABB 3HAB 5957-1 DSQC324 16MB Card 
ABB 3HAB 2241-1 DSQC325 Main Computer 
ABB 3HAB 2242-1 DSQC326 Robot Computer 
ABB 3HAB7229-1 DSQC328 I/O Card 
ABB 3HAB 6182-1 DSQC335 Robot Computer 
ABB 3HAB8101-3/05D DSQC345B DriveUnit 
ABB 3HAB8101-3/08C DSQC345C DriveUnit 
ABB 3HAB8101-7/01C DSQC346C DriveUnit 
ABB 3HAB8101-8 DSQC346G DriveUnit 
ABB cable DSQC351 Interbus-S 
ABB 3HAC 0373-1 DSQC361 Main Computer 
ABB 3HAC3180-1 DSQC373 Robot Computer 
ABB 900054 1Gb SD-card S3/S4 DDR 
ABB 900056 1Gb SD-card S2 DDR 
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ABB 57510001-AA DSCA 114 Print out board 
ABB 57520001-U DSCA 121 Communication board 
ABB 57160001-A DSDI 110 Digital b board 
ABB 57160001-K DSDO 110 Digital output board 
ABB YB161102-AH DSDX 110 Digital in/output board 
ABB 57160001-TP DSDX B001 digital in-output board 
ABB 57360001-U DSMB 124 Semiconductor memory board 
ABB 57360001-AN DSMB 125 Semiconductor memory board 
ABB 57360001-HG DSMB 127 Memory board 
ABB 57330001-N DSMC 110 Floppy disk controller 
ABB YB161102-AK DSPA 110 Axis computer 
ABB 57310256-AF DSPC 150 Central processor 
ABB 57310256-BA DSPC 153 Expand. single board computer 
ABB 57310001-GP DSPC 157 Expand. single board computer 
ABB YB161102-AD DSQC 103 Resolver power board 
ABB YB161102-AF DSQC 105 Display board 
ABB YB161102-BA DSQC 110 Programming board 
ABB YB161102-BS DSQC 115 Resolver power board + 2 analogue 
ABB YB161102-BE DSQC 116 Power supply 
ABB YB161102-BG DSQC 117 Resolver power board 
ABB YB161102-BU DSQC 124 Terminal unit 
ABB YB161102-BV DSQC 129 R/D board 
ABB YB161102-CH DSQC 136 Safety board 
ABB YB161102-CM DSQC 138 Terminal unit 
ABB YB560103-AC DSQC 202 Robot computer 
ABB YB560103-AS DSQC 208A External axis board 
ABB YB560103-AL DSQC 209 Analogue I/O board 
ABB YB560103-AM DSQC 210 Safety board 
ABB YB560103-AN DSQC 211 Power supply 
ABB YB560103-BF DSQC 215 Robot computer 
ABB YB560103-AZ DSQC 220 Programming board 
ABB YB560103-BD DSQC 223 PC Board digital I/O 
ABB YB560103-BE DSQC 224 PC Board combi I/O 
ABB YB560103-BK DSQC 227 Winchester interface 
ABB YB560103-BD DSQC 228 Safety board 
ABB YB560103-BN DSQC 230 Robot computer 
ABB YB560103-BS DSQC 233 External axis board 
ABB YB560103-BY DSQC 235A Rectifier 
ABB YB560103-BZ DSQC 235B Rectifier 
ABB YB560103-CA DSQC 236A Drive unit 
  DSQC 236B Drive 
ABB YB560103-CC DSQC 236C Drive unit 
ABB 3HAB2207-1 DSQC 236D Drive unit 
ABB YB560103-CD DSQC 236G Drive unit 
ABB 3HAB2245-1 DSQC 236H Drive unit 
ABB 3HAA3563-AJA DSQC 236P Drive unit 
ABB YB560103-CE DSQC 236T Drive unit 
  DSQC 239 Board - ABB RIO 
ABB  DSQC 241 Power supply 
ABB YB560103-CM DSQC 242 Programming board 
ABB 3HAA0001-CP DSQC 243 Serial measurement board 
ABB 3HAA3563-ACA DSQC 245 Serial measurement board 
ABB 3HAA3563-AAA DSQC 248 Programming board 
ABB 3HAA3563-AGA DSQC 249A Rectifier 
ABB 3HAA3563-AHA DSQC 249B Rectifier 
ABB 3HAA3563-AD DSQC 252 System board 
 E3HAC028756-001 DSQC 253 SMB unit DSQC 573 
 E3HAA3563-AMA DSQC 253 Serial Measurement Board 
 E3E 042816 DSQC 253 Exch. Serial mes. DSQC 253W 
 6369901-218 DSQC 253 Serial Measurement Board 
ABB 3HAB2211-1 DSQC 256A System board 
ABB 3HAA3563-AUA DSQC 258 Power supply 
ABB 3HAB8797-1 DSQC 266B Drive unit