802220-15VC RELIANCE驅動器_廈門興銳嘉進出口有限公司

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802220-15VC RELIANCE驅動器

沃翊自動化現介紹電壓型變頻器結構及原理，電壓型變頻器主電路包括：整流電路、中心直流電路、逆變電路三部分組，交-直-交型變頻器結構見附圖1
2）中心濾波電路：整流後的電壓為脈動電壓，有必要加以濾波；濾波電容CF除濾波效果外，還在整流與逆變之間起去耦效果、攪擾、進步功率要素，因為該大電容貯存能量，在斷電的短時間內電容兩頭存在高壓電，因此要在電容充沛放電後才可進行操作。
4）逆變電路：逆變管V1~V6組成逆變橋將直流電逆變成頻率、幅值都可調的溝通電，是變頻器的中心部分。常用逆變模塊有：GTR、BJT、GTO、IGBT、IGCT等，一般都選用模塊化結構有2單元、4單元、6單元
（1）電機繞組為理性具有無功重量，VD1~VD7為無功電流返回到直流電源供給通道
（3）V1~V6進行逆變進程是同一橋臂兩個逆變管不停地交替導通和截止，在換相進程中也需求D1~D6供給通路。
因為逆變管V1~V6每次由導通切換到截止狀況的瞬間，C極和E極間的電壓將由近乎0V上升到直流電壓值UD，這過高的電壓增長率可能會損壞逆變管，吸收電容的效果就是下降V1~V6關斷時的電壓增長率。
電機在減速時轉子的轉速將可能超越此時的同步轉速（n=60f/P）而處於再生制動（發電）狀況，拖動體係的動能將反應到直流電路中使直流母線（濾波電容兩頭）電壓UD不斷上升（即所說的泵升電壓），這樣變頻器將會發生過壓維護，甚至可能損壞變頻器，因此需將反應能量耗費掉，制動電阻就是用來耗費這部分能量的。制動單元由開關管與驅動電路構成，其功能是用來操控流經RB的放電電流IB。

以下產品，歡迎隨時垂詢：

Reliance Electric 1200 hp, 1200 rpm, 4000 V motor complete with control cabinet

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350 HP Baldor Reliance Electric Motor 1780 RPM 460 Volt 3 Ph 449T B68985

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RELIANCE ELECTRIC 150V4051 USPP 150V4051

RELIANCE ELECTRIC 7C658 USPP 7C658

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RELIANCE ELECTRIC 3RA2015 USPP 3RA2015

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RELIANCE ELECTRIC 45C-301A NSFP 45C301A

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RELIANCE ELECTRIC 803613-TC USPP 803613TC

RELIANCE ELECTRIC 0-54339-1 NSFP 0543391

RELIANCE ELECTRIC 2GN44001 NSFP 2GN44001

USED Reliance Electric LF200460AAR LiquiFlo Liquid Cooled AC Drive

RELIANCE ELECTRIC VZ3000 IGBT POWER UNIT,UGZ341A [H]

Reliance Duty Master Motor Rebuilt 500HP 4160V 1787RPM

(2863) Reliance Electric Process Controller 0-56313-1

Reliance baldor 08KL599999-ZY L3699S 1785rpm 100hp Electric Motor 460v RPM AC

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Reliance Electric 300 hp AC Induction Motor, 4160v, 1190 rpm *PT8379*

New Reliance RPMIII DC Motor C2514ATZ 6758588 -BH 75 HP 1750/2300RPM 500V 124A

RELIANCE ELECTRIC 40V2060 NSFP 40V2060

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Reliance Electric 3RA2008U Servo Controller

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New Reliance Electric 75HP, 1780 RPM Motor - B411251

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