邯山區(qū)直銷韓國YOONVALVE氣動閥ITQ1500-450BF正品保障中山立訊電氣有限公司銷售韓國WOONYOUNG云永WYES,SSR固態(tài)繼電器,調(diào)功調(diào)壓器,溫控儀表,開關(guān)電源,濾波器,電流表,電壓表,頻率表,變壓器等等，若需了解詳細的資料，歡迎留言公司網(wǎng)站或來電垂詢！！
WOONYOUNG云永WYES,SSR固態(tài)繼電器：
WYR1C201D4,WYR1C5005D4,WYMY1C203D4,WYMY2C201D4,
WYR1C201D4,WYR1C5005D4,WYMY1C203D4,WYMY2C201D4,
WYS1C205D4,WYS1C210D4,WYS1C220D4,WYS1C230D4,
WYS1C240D4,WYH1C505D4,WYH1C505D4,WYH1C510D4
WYH1C520D4,WYMS1C0505D4,WYMS1C0510D4,WYMS1C0520D4,
WYMS1C0530D4,WYMS1C0540D4,WYMS1C105D4,WYMS1C110D4,
WYMS1C520D4,WYMS1C120D4,WYMS1C130D4,WYMS1C140D4,
WYMS1C105D4,WYMS1C110D4,WYMS1C120D4,WYMS1C130D4,
WYMS1C140D4,WYMS1C505D4,WYMS1C510D4,WYMS1C210D4,
WYMS1C220D4,WYMS1C520D4,WYLG1C10Z40,WYLG1C15Z40,
WYLG1C25Z40,WYLG1C40Z40,WYLG1C10Z4,WYLG1C15Z4,
WYLG1C25Z4,WYLG1C40Z4,WYLH1C10Z4,WYLH1C15Z4,,工作原理編輯在電路正常工作時，欠電流繼電器的銜鐵與鐵芯始終是吸合的。只有當電流降至低于整定值時，欠電流繼電器釋放，發(fā)出信號，從而改變電路的狀態(tài)。欠電流繼電器的吸引電流一般為線圈額定電流的0．3～o．65倍，釋放電流為額定電流的0．1～o．2倍。[1]常用型號和選擇編輯常用的欠電流繼電器有JLl4一口口ZO等系列產(chǎn)品，常用于直流電動機和電磁吸盤電路中作弱磁保護。(1)電流繼電器的額定電流一般可按電動機長期工作的額定電流來選擇。對于頻繁啟動的電動機，考慮到啟動電流在繼電器中的熱效應(yīng)，額定電流可選大一個等級。(2)電流繼電器的觸點種類、數(shù)量、額定電流及復(fù)位方式應(yīng)滿足控制線路的要求。(3)過電流繼電器的整定電流一般取電動機額定電流的1．7～2倍。
邯山區(qū)直銷韓國YOONVALVE氣動閥ITQ1500-450BF正品保障
WYLH1C25Z4,WYLH1C40Z4,WYLH1C10Z40,WYLH1C15Z40,
WYLH1C25Z40,WYLH1C40Z40,WYG1C10Z4,WYG1C10R4,
WYG1C20Z4,WYG1C20R4,WYG1C30Z4,WYG1C30R4,
WYG1C40R4,WYG1C50Z4,WYG1C50R4,WYG1C40Z4,
WYG1C60Z4,WYG1C60R4,WYG1C80Z4,WYG1C80R4,
WYG1C10Z40,WYG1C10R40,WYG1C20Z40,WYG1C20R40,
WYG1C30Z40,WYG1C30R40,WYG1C40Z40,WYG1C40R40,
WYG1C50Z40,WYG1C50R40,WYG1C60Z40,WYG1C60R40,
WYG1C80Z40,WYG1C80R40,WYH1C10Z4,WYH1C10R4,
WYH1C20Z4,WYH1C20R4,WYH1C30Z4,WYH1C30R4,
WYH1C40Z4,WYH1C40R4,WYH1C50Z4,WYH1C80Z4,
WYH1C80R4,WYH1C10Z40,WYH1C10R40,WYH1C20Z40,
WYH1C20R40,WYH1C30Z40,WYH1C30R40,WYH1C60Z4,
WYH1C60R4,WYH1C40Z40,WYH1C40R40,WYH1C50Z40
WYH1C50R40,WYH1C60Z40,WYH1C60R40,WYH1C80Z40,
WYH1C80R40,WYMG1C10Z4,WYMG1C10R4,WYMG1C15Z4,
WYMG1C15R4,WYMG1C25Z4,WYMG1C25R4,WYMG1C40Z4,
WYMG1C40R4,WYMG1C60Z4,WYMG1C60R4,WYMG1C80Z4,,即上電試機。在上電前后必須注意以下幾點：上電之前，須確認輸入電壓是否有誤，將380V電源接入220V級變頻器之中會出現(xiàn)炸機（炸電容、壓敏電阻、模塊等）；檢查變頻器各接插口是否已正確連接，連接是否有松動，連接異常有時可能會導(dǎo)致變頻器出現(xiàn)故障，嚴重時會出炸機等情況；上電后檢測故障顯示內(nèi)容，并初步斷定故障及原因；如未顯示故障，首先檢查參數(shù)是否有異常，并將參數(shù)復(fù)歸后，在空載（不接電機）情況下啟動變頻器，并測試U、V、W三相輸出電壓值。如出現(xiàn)缺相、三相不平衡等情況，則模塊或驅(qū)動板等有故障；在輸出電壓正常（無缺相、三相平衡）的情況下，負載測試，盡量是滿負載測試。[1]故障判斷整流模塊損壞通常是由于電網(wǎng)電壓或內(nèi)部短路引起。
邯山區(qū)直銷韓國YOONVALVE氣動閥ITQ1500-450BF正品保障
WYMG1C80R4,WYMG1C100Z4,WYMG1C100R4,WYMG1C150Z4,
WYMG1C150R4,WYMG1C10Z40,WYMG1C10R40,WYMG1C15Z40
WYMG1C15R40,WYMG1C25Z40,WYMG1C25R40,WYMG1C40Z40,
WYMG1C40R40,WYR1C01Z4,WYR1C01Z4,WYRH1C01Z40,
WYR1C01Z40,WYRH1C01Z40,WYMY2C01Z4,WYMY2C01Z40,
WYGA1C01Z4,WYGA1C01Z4,WYGA2C01Z4,WYGA4C01Z4,
WOONYOUNG云永WYES,SSR固態(tài)繼電器
WYNG1C10Z4,WYNG1C15Z4,WYNG1C25Z4,WYNG1C40Z4,WYNG1C50Z4,WYNG1C60Z4,WYNG1C80Z4
WYNG1C10Z40,WYNG1C15Z40,WYNG1C25Z40,WYNG1C40Z40,WYNG1C50Z40,WYNG1C60Z40
WYNG1C80Z40,WY3G3C10Z4,WY3G3C10R4,WY3G3C20Z4,WY3G3C20R4,WY3G3C30Z4,WY3G3C30R4
WY3G3C40Z4,WY3G3C40R4,WY3G3C50Z4,WY3G3C50R4,WY3G3C60Z4,WY3G3C60R4,WY3G3C80Z4
WY3G3C80R4,WY3G3C10Z40,WY3G3C10R40,WY3G3C20Z40,WY3G3C20R40,WY3G3C30Z40,WY3G3C30R40
WY3G3C40Z40,WY3G3C40R40,WY3G3C50Z40,WY3G3C50R40,WY3G3C60Z40,WY3G3C60R40,WY3G3C80Z40,
WY3G3C80R40,WYN3G3C10Z4,WYN3G3C10R4,WYN3G3C15Z4,WYN3G3C15R4,WYN3G3C20Z4,WYN3G3C20R4
WYN3G3C25Z4,WYN3G3C25R4,WYN3G3C30Z4,WYN3G3C30R4,WYN3G3C40Z4,WYN3G3C40R4,WYN3G3C50Z4
WYN3G3C50R4,WYN3G3C60Z4,WYN3G3C60R4,WYN3G3C80Z4,WYN3G3C80R4,WYN3G3C10Z40,WYN3G3C10R40
WYN3G3C15Z40,WYN3G3C15R40,WYN3G3C20Z40,WYN3G3C20R40,WYN3G3C25Z40,WYN3G3C25R40,WYN3G3C30Z40
WYN3G3C30R40,WYN3G3C40Z40,WYN3G3C40R40,WYN3G3C50Z40,WYN3G3C50R40,WYN3G3C60Z40,WYN3G3C60R40
WYN3G3C80Z40,WYN3G3C80R40,WY3H3C10Z4,WY3H3C10R4,WY3H3C20Z4,WY3H3C20R4,WY3H3C30Z4,WY3H3C30R4,
WY3H3C40Z4,WY3H3C40R4,WY3H3C40Z40,WY3H3C40R40
WY3H3C50Z4,WY3H3C50R4,WY3H3C60Z4,WY3H3C60R4,WY3H3C80Z4,WY3H3C80R4,WY3H3C10Z40,WY3H3C10R40
WY3H3C20Z40,WY3H3C20R40,WY3H3C30Z40,WY3H3C30R40,WY3H3C40Z40,WY3H3C40R40,WY3H3C50Z40,WY3H3C50R40
WY3H3C60Z40,WY3H3C60R40,WY3H3C80Z40,WY3H3C80R40,WYL3H3C10Z4,WYL3H3C10R4,WYL3H3C15Z4,WYL3H3C15R4
WYL3H3C25Z4,WYL3H3C25R4,WYL3H3C40Z4,WYL3H3C40R4,WYL3H3C50Z4,WYL3H3C50R4,WYL3H3C60Z4,WYL3H3C60R4
WYL3H3C80Z4,WYL3H3C80R4,WYL3H3C10Z40,WYL3H3C10R40,WYL3H3C15Z40,WYL3H3C15R40,WYL3H3C25Z40
WYL3H3C25R40,WYL3H3C40Z40,WYL3H3C40R40,WYL3H3C50Z40,WYL3H3C50R40,WYL3H3C80Z40,WYL3H3C80R40
WYL3H3C60Z40,WYL3H3C60R40,WYN3H3C10Z4,WYN3H3C10R4,WYN3H3C15Z4,WYN3H3C15R4,WYN3H3C15Z4
WYN3H3C15R4,WYN3H3C20Z4,WYN3H3C20R4,WYN3H3C25Z4,WYN3H3C25R4,WYN3H3C30Z4,WYN3H3C30R4,WYN3H3C40Z4 ,可以把實際為400A的電流轉(zhuǎn)變?yōu)?A的電流。參數(shù)說明編輯電流互感器型號[3]：字母：L—電流互感器第二字母：A—穿墻式；Z—支柱式；M—母線式；D—單匝貫穿式；V—結(jié)構(gòu)倒置式；J—零序接地檢測用；W—抗污穢；R—繞組裸露式第三字母：Z—環(huán)氧樹脂澆注式；C—瓷絕緣；Q—氣體絕緣介質(zhì)；W—與微機保護第四字母：B—帶保護級；C—差動保護；D—D級；Q—加強型；J—加強型ZG第五數(shù)字：電壓等級產(chǎn)品序號主要技術(shù)要求2.1額定容量：額定二次電流通過二次額定負荷時所消耗的視在功率。額定容量可以用視在功率V.A表示，也可以用二次額定負荷阻抗Ω表示。2.2一次額定電流：允許通過電流互感器一次繞組的用電負荷電流。
邯山區(qū)直銷韓國YOONVALVE氣動閥ITQ1500-450BF正品保障
WYN3H3C40R4,WYPM1C203D4,WYPS1C203D4,WYSC1C0510D4,WYSC1C105D4,WYSC1C203D4,WYR1C0310D4,WYR1C0505D4
WYR1C103D4,WYR1C201D4,WYMY1C203D4,WYMY2C201D4,WYMY2C01Z40
WYLY1C03Z4,WYLY1C03Z40,WYLY1C203D4,
WYNSG1C205D4,WYNSG1C210D4,WYNSG1C220D4,WYNSG1C230D4
WYNSG1C240D4,WYNSH1C505D4,WYNSH1C510D4,WYNSH1C520D4

WOONYOUNG云永WYES,SSR固態(tài)繼電器
WYFMH1C60Z4,WYFMH1C60R4,WYFMH1C60R40,WYFMH1C80Z4
WYFMH1C80R4,WYFMH1C150Z4,WYFMH1C150R4,WYFMH1C60Z40
WYFMH1C60R40,WYFMH1C80Z40,WYFMH1C80R40,WYFMH1C100Z40
WYFMH1C100Z4,WYFMH1C100R4,WYFMH1C150Z40,WYFMH1C150R40
WYFM3G3C60Z4,WYFM3G3C60R4,WYFM3G3C80Z4,WYFM3G3C80R4
WYFM3G3C100Z4,WYFM3G3C100R4,WYFM3G3C150Z4,WYFM3G3C150R4
WYFM3G3C60Z40,WYFM3G3C60R40,WYFM3G3C80Z40,WYFM3G3C80R40
WYFM3G3C100Z40,WYFM3G3C100R40,WYFM3G3C150Z40,WYM3G3C150R40,
WYFG1C50Z4,WYFG1C50R4,WYFG1C60Z4,WYFG1C60R4,WYFG1C80Z4,WYFG1C80R4
WYFG1C50Z40,WYFG1C50R40,WYFG1C60Z40,WYFG1C60R40,WYFG1C80Z40,WYFG1C80R40,
WYF3G3C30Z4,WYF3G3C30R4,WYF3G3C40Z4,WYF3G3C40R4,WYF3G3C50Z4,WYF3G3C50R4
WYF3G3C60Z4,WYF3G3C60R4,WYF3G3C80Z4,WYF3G3C80R4,WYF3G3C30Z40,WYF3G3C30R40
WOONYOUNG云永WYES,SSR固態(tài)繼電器
WYFM3H3C60Z4,WYFM3H3C60R4,WYFM3H3C80Z4,WYFM3H3C80R4,WYFM3H3C100Z4,
WYFM3H3C100R4,WYFM3H3C150Z4,WYFM3H3C150R4,WYFM3H3C60Z40,WYFM3H3C60R40,
WYFM3H3C80Z40,WYFM3H3C80R40,WYFM3H3C100Z40,WYFM3H3C100R40
WYFM3H3C150Z40,WYFM3H3C150R40
WOONYOUNG云永WYES,SSR固態(tài)繼電器
WYFH1C50Z4,WYFH1C50R4,WYFH1C60Z4,WYFH1C60R4,WYFH1C80Z4,WYFH1C80R4
WYFH1C50Z40,WYFH1C50R40,WYFH1C60Z40,WYFH1C60R40,WYFH1C80Z40,WYFH1C80R40
WOONYOUNG云永WYES,SSR固態(tài)繼電器
WYF3H3C30Z4,WYF3H3C30R4,WYF3H3C40Z4,WYF3H3C40R4,WYF3H3C50Z4,
WYF3H3C50R4,WYF3H3C60Z4,WYF3H3C60R4,WYF3H3C80Z4,WYF3H3C80R4
WYF3H3C30Z40,WYF3H3C30R40,WYF3H3C40Z40,WYF3H3C40R40
WYF3H3C50Z40,WYF3H3C50R40,WYF3H3C60Z40,WYF3H3C60R40
WYF3H3C80Z40,WYF3H3C80R40
WYFH1C230D4,WYFH1C240D4,WYFH1C530D4,WYFMH1C550D4,WYFMH1C575D4
WYFMH1C5100D4,WYFMH1C5200D4,WYFMH1C12300D4,WYFMH1C12400D4

WY3G2PC15R4,WY3G2PC25R4,WY3G2PC40R4
WY3G2PC15R40,WY3G2PC25R40,WY3G2PC40R40
WY3H2PC15R4,WY3H2PC25R4,WY3H2PC40R4
WY3H2PC15R40,WY3H2PC25R40,WY3H2PC40R40
WOONYOUNG云永WYESSSR固態(tài)繼電器底座
WYPS-1P,WYPS-2P,WYPS-2PR,WYPS-4P,WYPS-4PR,WYPS-6P,WYPS-6PR,WYPS-8P,
WYPS-8PR,WYPS-10P,WYPS-10PR,WYPS-16P,WYPS-16PR
WYGB1P4,WYGA1P4,WYGB1PD,WYGB1P1,WYGA1P1,WYGA1P2
WOONYOUNG云永WYES云永功率控制器：,,3.在復(fù)位電路中，S33和S34之間需要接入相應(yīng)的復(fù)位條件。與此同時，Y1和Y2之間的條件也是復(fù)位電路的一部分，兩者條件必須同時成立.電流互感器[1]是依據(jù)電磁感應(yīng)原理將一次側(cè)大電流轉(zhuǎn)換成二次側(cè)小電流來測量的儀器。電流互感器是由閉合的鐵心和繞組組成。它的一次側(cè)繞組匝數(shù)很少，串在需要測量的電流的線路中。因此它經(jīng)常有線路的全部電流流過，二次側(cè)繞組匝數(shù)比較多，串接在測量儀表和保護回路中，電流互感器在工作時，它的二次側(cè)回路始終是閉合的，因此測量儀表和保護回路串聯(lián)線圈的阻抗很小，電流互感器的工作狀態(tài)接近短路。電流互感器是把一次側(cè)大電流轉(zhuǎn)換成二次側(cè)小電流來測量，二次側(cè)不可開路。詞條介紹了其工作原理、參數(shù)說明、分類、使用介紹等。
邯山區(qū)直銷韓國YOONVALVE氣動閥ITQ1500-450BF正品保障
WYU-RG25SI,WYU-RG25SI,WYU-RG25SI,WYU-RG50SI,WYU-RG70SI,WYU-RG80SI,WYU-RG100SI,WYU-RG150SI,WYU-RG25SM,
WYU-RG40SM,WYU-RG50SM,WYU-RG70SM,WYU-RG80SM,WYU-RG100SM,WYU-RG150SM,WYU-PG25SI,WYU-PG40SI,WYU-PG50SI,
WYU-PG70SI,WYU-PG80SI,WYU-PG100SI,WYU-PG150SI,WYU-PG25SM,WYU-PG40SM,WYU-PG50SM,WYU-PG70SM,WYU-RG80SM,
WYU-PG100SM,WYU-PG150SM,WYU-DG25SI,WYU-DG40SI,WYU-DG50SI,WYU-DG25SM,WYU-DG25SM-R,WYU-DG40SM,WYU-DG40SM-R,
WYU-DG50SM,WYU-DG50SM-R,WYU-DG70SM,WYU-DG70SM-R,WYU-DG80SM,WYU-DG80SM-R,WYU-DG100SM,WYU-DG100SM-R,WYU-DG150SM,
WYU-RH25SI,WYU-RH40SI,WYU-RH50SI,WYU-RH70SI,WYU-RH80SI,WYU-RH100SI,WYU-RH150SI,WYU-RH25SM,WYU-RH40SM,
WYU-RH50SM,WYU-RH70SM,WYU-RH80SM,WYU-RH100SM,WYU-RH150SM,WYU-PH25SI,WYU-PH40SI,WYU-PH50SI,WYU-PH70SI,
WYU-PH80SI,WYU-PH100SI,WYU-PH150SI,WYU-PH25SM,WYU-PH40SM,WYU-PH50SM,WYU-PH70SM,WYU-PH80SM,WYU-PH100SM,
WYU-PH150SM,WYU-DH25SI,WYU-DH40SI,WYU-DH50SI,WYU-DH25SM,WYU-DH25SM-R,WYU-DH40SM,WYU-DH40SM-R,WYU-DH50SM,
WYU-DH50SM-R,WYU-DH70SM,WYU-DH70SM-R,WYU-DH100SM,WYU-DH100SM-R,WYU-DH125SM,WYU-DH125SM-R,WYU-DH150SM,WYU-DH150SM-R,
WYU-RG25TI,WYU-RG40TI,WYU-RG55TI,WYU-RG70TI,WYU-RG80TI,WYU-RG100TI,WYU-RG150TI,WYU-RG200TI,WYU-RG250TI,
WYU-RG300TI,WYU-RG400TI,WYU-RG500TI,WYU-RG25TM,WYU-RG40TM,WYU-RG55TM,WYU-RG70TM,WYU-RG80TM,WYU-RG100TM,
WYU-RG150TM,WYU-RG200TM,WYU-RG250TM,WYU-RG300TM,WYU-RG400TM,WYU-RG500TM,WYU-PG25TI,WYU-PG40TI,WYU-PG55TI,
WYU-PG70TI,WYU-PG80TI,WYU-PG100TI,WYU-PG150TI,WYU-PG200TI,WYU-PG250TI,WYU-PG300TI,WYU-PG400TI,WYU-PG500TI,
WYU-PG25TM,WYU-PG40TM,WYU-PG55TM,WYU-PG70TM,WYU-PG80TM,WYU-PG100TM,WYU-PG150TM,WYU-PG200TM,WYU-PG250TM,,在排除內(nèi)部短路情況下，更換整流橋。在現(xiàn)場處理故障時，應(yīng)重點檢查用戶電網(wǎng)情況，如電網(wǎng)電壓，有無電焊機等對電網(wǎng)有污染的設(shè)備等。逆變模塊損壞通常是由于電機或電纜損壞及驅(qū)動電路故障引起。在修復(fù)驅(qū)動電路之后，測驅(qū)動波形良好狀態(tài)下，更換模塊。在現(xiàn)場服務(wù)中更換驅(qū)動板之后，須注意檢查馬達及連接電纜。在確定無任何故障下，才能運行變頻器。上電無顯示通常是由于開關(guān)電源損壞或軟充電電路損壞使直流電路無直流電引起，如啟動電阻損壞，操作面板損壞同樣會產(chǎn)生這種狀況。顯示過電壓或欠電壓通常由于輸入缺相，電路老化及電路板受潮引起。解決方法是找出其電壓檢測電路及檢測點，更換損壞的器件。顯示過電流或接地短路通常是由于電流檢測電路損壞。
邯山區(qū)直銷韓國YOONVALVE氣動閥ITQ1500-450BF正品保障
WYU-PG300TM,WYU-PG400TM,WYU-PG500TM,WYU-RH25TI,WYU-RH40TI,WYU-RH55TI,WYU-RH70TI,WYU-RH80TI,WYU-RH100TI,
WYU-RH150TI,WYU-RH200TI,WYU-RH250TI,WYU-RH300TI,WYU-RH400TI,WYU-RH500TI,WYU-RH25TM,WYU-RH40TM,WYU-RH55TM,
WYU-RH70TM,WYU-RH80TM,WYU-RH100TM,WYU-RH150TM,WYU-RH200TM,WYU-RH250TM,WYU-RH300TM,WYU-RH400TM,WYU-RH500TM,
WYU-PH25TI,WYU-PH40TI,WYU-PH55TI,WYU-PH70TI,WYU-PH80TI,WYU-PH150TI,WYU-PH200TI,WYU-PH250TI,WYU-PH300TI,
WYU-PH400TI,WYU-PH500TI,WYU-PH25TM,WYU-PH40TM,WYU-PH55TM,WYU-PH70TM,WYU-PH80TM,WYU-PH100TM,WYU-PH150TM,
WYU-PH200TM,WYU-PH250TM,WYU-PH300TM,WYU-PH400TM,WYU-PH500TM,WYU-DG25TM,WYU-DG25TM-R,WYU-DG40TM,WYU-DG40TM-R,
WYU-DG55TM,WYU-DG55TM-R,WYU-DG70TM,WYU-DG70TM-R,WYU-DG80TM,WYU-DG80TM-R,WYU-DG100TM,WYU-DG100TM-R,WYU-DG100TM,
WYU-DG100TM-RWYU-DG150TM,WYU-DG150TM-R,WYU-DG200TM,WYU-DG200TM-R,WYU-DG250TM,WYU-DG250TM-R,WYU-DG300TM,WYU-DG300TM-R,
WYU-DG400TM,WYU-DG400TM-R,WYU-DG500TM,WYU-DG500TM-R,WYU-DH25TM,WYU-DH25TM-R,WYU-DH40TM,WYU-DH40TM-R,WYU-DH55TM,
WYU-DH55TM-R,WYU-DH70TM,WYU-DH70TM-R,WYU-DH80TM,WYU-DH80TM-R,WYU-DH100TM,WYU-DH100TM-R,WYU-DH150TM,WYU-DH150TM-R,
WYU-DH200TM,WYU-DH200TM-R,WYU-DH250TM,WYU-DH250TM-R,WYU-DH300TM,WYU-DH300TM-R,WYU-DH400TM,WYU-DH400TM-R,WYU-DH500TM,WYU-DH500TM-R,轉(zhuǎn)矩響應(yīng)慢、電機轉(zhuǎn)矩利用率不高，低速時因定子電阻和逆變器死區(qū)效應(yīng)的存在而性能下降，穩(wěn)定性變差等。因此人們又研究出矢量控制變頻調(diào)速。[8]電壓空間矢量(SVPWM)控制方式它是以三相波形整體生成效果為前提，以逼近電機氣隙的理想圓形旋轉(zhuǎn)磁場軌跡為目的，一次生成三相調(diào)制波形，以內(nèi)切多邊形逼近圓的方式進行控制的。經(jīng)實踐使用后又有所改進，即引入頻率補償，能消除速度控制的誤差；通過反饋估算磁鏈幅值，消除低速時定子電阻的影響；將輸出電壓、電流閉環(huán)，以提高動態(tài)的精度和穩(wěn)定度。但控制電路環(huán)節(jié)較多，且沒有引入轉(zhuǎn)矩的調(diào)節(jié)，所以系統(tǒng)性能沒有得到根本改善。[8]矢量控制(VC)方式矢量控制變頻調(diào)速的做法是將異步電動機在三相坐標系下的定子電流Ia、Ib、Ic、通過三相－二相變換。
邯山區(qū)直銷韓國YOONVALVE氣動閥ITQ1500-450BF正品保障