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R88D-WT08H變頻器的基本構(gòu)成有四部分整流部分中間直流環(huán)節(jié)逆變部分和控制部分。變頻器的輸入側(cè)為整流電路，它具有非線性特性，因此不可避免地要產(chǎn)生高次諧波。
　　一般來講，若整流電路為m個(gè)三相橋式整流電路構(gòu)成的6m相整流電路，其電源側(cè)電流將含有6m±1次諧波（m=l、2、3、……)，R88D-WT08H當(dāng)變頻器接入電源時(shí)這些高次諧波將會(huì)污染電源通；通用變頻器的輸出側(cè)的逆變部分多采用正弦脈沖寬度調(diào)制方式，即SPWM方式。這種調(diào)制方式雖輸出側(cè)的諧波分量較其它控制方式大為減少但仍含有高次諧波分量。這些諧波會(huì)對電氣設(shè)備、電子設(shè)中間直流環(huán)節(jié).逆變部分及控制部分過熱問題，究其原因?qū)嵸|(zhì)上就是變頻器產(chǎn)生某一次諧波激起了電容器與其他部分構(gòu)成的諧振回路的諧振。
　　對廠供用電系統(tǒng)的設(shè)備影響及危害變頻器產(chǎn)生的諧波對廠用供電系統(tǒng)的變輸電設(shè)備用電設(shè)備測量儀表的影響及危害具體見表圖變頻器的構(gòu)成備通訊設(shè)施產(chǎn)生干擾，使其工作不正常或無法工作變頻器產(chǎn)生的諧波干擾及其危害由于變頻器在應(yīng)用中會(huì)產(chǎn)生諧波，這些諧波會(huì)對電力系統(tǒng)變輸電設(shè)備用電設(shè)備測量儀表通訊設(shè)施產(chǎn)生干擾，使它們工作不正?；驘o法工作。
　　R88D-WT08H下面從工廠企業(yè)用電的角度就變頻器在使用中產(chǎn)生的諧波干擾及其危害加以分析說明。
　　對廠用供電系統(tǒng)的影響及危害對工廠企業(yè)來說，其供電系統(tǒng)由變壓器輸電線路變電所設(shè)備（如開關(guān)母線等）用電設(shè)備（如電動(dòng)機(jī)等）等構(gòu)成，其中輸電線路對石化企業(yè)來說多為電力電纜。

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 R88D-WT08H
R88D-WT10H
R88D-WT150H
R88D-WT15H
R88D-WT20H
R88D-WT30H
R88D-WT50H
R88D-WT60H
R88D-WT75H
R88D-WTA3H
R88D-WTA3HL
R88D-WTA5H
R88D-WTA5HL
R88M-H05030 AC50W
R88M-H10030 AC100W
R88M-H10030-B AC100W
R88M-H1K130 AC1100W
R88M-H1K130-B AC1100W
R88M-H20030 AC200W
R88M-H20030-B AC200W
R88M-H20030-G25BJS1
R88M-H30030 AC300W
R88M-H30030-B AC300W
R88M-H50030-B AC500W
R88M-H75030 AC750W
R88M-H75030-B AC750W
R88M-U03030HA
R88M-U03030HA-B
R88M-U03030HA-BS1
R88M-U03030HA-S1
R88M-U03030LA
R88M-U05030HA
R88M-U05030HA-B
R88M-U05030HA-BS1
R88M-U05030HA-S1
R88M-U05030LA
R88M-U10030HA
R88M-U10030HA-B
R88M-U10030HA-BS1
R88M-U10030HA-S1
R88M-U10030LA
R88M-U10030LA-G11BJ
R88M-U10030TA-BG05B
R88M-U10030VA-S1
R88M-U1K030H
R88M-U1K030H-B
R88M-U1K030H-BS1
R88M-U1K030H-S1
R88M-U1K530H
R88M-U1K530H-B
R88M-U20030HA
R88M-U20030HA-B
R88M-U20030HA-BS1
R88M-U20030HA-G33BJ
R88M-U20030HA-S1
R88M-U20030LA-BS1

 

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