并勵(lì)直流電動(dòng)機(jī)的基本控制線路ppt課件

1、.1課題十課題十 并勵(lì)直流電動(dòng)機(jī)的基本控制線路并勵(lì)直流電動(dòng)機(jī)的基本控制線路 直流電動(dòng)機(jī)具有啟動(dòng)轉(zhuǎn)矩大、調(diào)速范圍廣、調(diào)速精度高、直流電動(dòng)機(jī)具有啟動(dòng)轉(zhuǎn)矩大、調(diào)速范圍廣、調(diào)速精度高、能夠?qū)崿F(xiàn)無(wú)級(jí)平滑調(diào)速以及可以頻繁啟動(dòng)等一系列優(yōu)點(diǎn)。能夠?qū)崿F(xiàn)無(wú)級(jí)平滑調(diào)速以及可以頻繁啟動(dòng)等一系列優(yōu)點(diǎn)。高精度切削機(jī)床高精度切削機(jī)床 軋鋼機(jī)軋鋼機(jī).2 造紙機(jī)造紙機(jī) 龍門刨床龍門刨床 外型圖外型圖 內(nèi)部接線圖內(nèi)部接線圖 .3一、啟動(dòng)控制線路1.手動(dòng)啟動(dòng)控制線路手動(dòng)啟動(dòng)控制線路BQ3直流電動(dòng)機(jī)啟動(dòng)變阻器外形圖直流電動(dòng)機(jī)啟動(dòng)變阻器外形圖 并勵(lì)直流電動(dòng)機(jī)手動(dòng)啟動(dòng)控制電路圖并勵(lì)直流電動(dòng)機(jī)手動(dòng)啟動(dòng)控制電路圖 05-分段靜觸頭分段靜觸頭

2、 6-電磁鐵電磁鐵 7- 弧形銅條弧形銅條.4QFKT1KT1KM1KM2L+KM2LKM1SB2KA1KA2SB1KA2KA1IKM1KM1KM3R2KM12.電樞回路串電阻二級(jí)啟動(dòng)控制線路電樞回路串電阻二級(jí)啟動(dòng)控制線路IKM1KM1KM3R2KM1IKM1KM1KM3R2KM1IKM1KM1KM3R2KM1IKM1KM1KM3R2KM1IMR1KM1KT2KM3KT2經(jīng)過經(jīng)過整定時(shí)間整定時(shí)間KT2動(dòng)斷動(dòng)斷觸頭延時(shí)觸頭延時(shí)閉合閉合, KM3線圈線圈得電得電KM3觸頭觸頭閉合閉合切除全部切除全部電阻電阻電動(dòng)機(jī)全電動(dòng)機(jī)全速運(yùn)行速運(yùn)行KT22.電樞回路串電阻二級(jí)啟動(dòng)控制線路電樞回路串電阻二級(jí)啟動(dòng)控

3、制線路.9二、正反轉(zhuǎn)控制線路直流電動(dòng)機(jī)實(shí)現(xiàn)正反轉(zhuǎn)有電樞繞組反接直流電動(dòng)機(jī)實(shí)現(xiàn)正反轉(zhuǎn)有電樞繞組反接法和勵(lì)磁繞組反接法兩種。法和勵(lì)磁繞組反接法兩種。.10KM3KM2KM2KM1SB2KM2KM3KM1KM2KAL+L-KTKAKM2SB3KM1SB1KTKM1KM1MR并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路IQFKM2KM1電路分析電路分析KM2KM1.11KM3KM2KM2KM1SB2KM2KAKM2SB3KM1SB1KTKM1KM1MR并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路IKM2KM1正轉(zhuǎn)啟動(dòng)正轉(zhuǎn)啟動(dòng):合上合上QF勵(lì)磁繞組得勵(lì)磁繞組得電勵(lì)磁電勵(lì)磁線圈線圈KA得得

4、電，動(dòng)合觸電，動(dòng)合觸頭閉合頭閉合KT線圈得電，線圈得電，延時(shí)閉合瞬延時(shí)閉合瞬時(shí)斷開觸頭時(shí)斷開觸頭斷開斷開KM2KM1L+L-QFKM3KM1KM2KAKT.12KM3KM2KM2KM1SB2KM2KAKM2SB3KM1SB1KTKM1KM1MRIKM2KM1按下按下SB1KM1線圈得線圈得電，電，KM1觸觸頭動(dòng)作頭動(dòng)作電動(dòng)機(jī)串聯(lián)電動(dòng)機(jī)串聯(lián) 電阻正轉(zhuǎn)起電阻正轉(zhuǎn)起動(dòng)動(dòng)KT線圈失電線圈失電KM2KM1L+L-QF并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路KM3KM1KM2KAKT.13KM3KM2KM2KM1SB2KM2KAKM2SB3KM1SB1KTKM1KM1MRIKM2KM1KT經(jīng)過

5、整定經(jīng)過整定時(shí)間時(shí)間KT動(dòng)斷觸頭動(dòng)斷觸頭延時(shí)閉合延時(shí)閉合, KM3線圈得線圈得電電KM3觸頭閉觸頭閉合合切除電阻切除電阻電動(dòng)機(jī)全速電動(dòng)機(jī)全速運(yùn)行運(yùn)行KM2KM1L+L-QF并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路KM3KM1KM2KAKT.14KM3KM2KM2KM1SB2KM2KAKM2SB3KM1SB1KTKM1KM1MRIKM2KM1停停:按下按下SB3KM2KM1L+L-QF并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路KM3KM1KM2KAKT.15KM3KM2KM2KM1SB2KM2KAKM2SB3KM1SB1KTKM1KM1MRIKM2KM1反轉(zhuǎn)啟動(dòng)反轉(zhuǎn)啟動(dòng):合

6、上合上QF勵(lì)磁繞組得勵(lì)磁繞組得電勵(lì)磁電勵(lì)磁線圈線圈KA得得電，動(dòng)合觸電，動(dòng)合觸頭閉合頭閉合KT線圈得電，線圈得電，延時(shí)閉合瞬延時(shí)閉合瞬時(shí)斷開觸頭時(shí)斷開觸頭斷開斷開KM2KM1L+L-QF并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路KM3KM1KM2KAKT.16KM3KM2KM2KM1SB2KM2KAKM2SB3KM1SB1KTKM1KM1MRIKM2KM1按下按下SB2KM2線圈得線圈得電，電，KM2觸觸頭動(dòng)作頭動(dòng)作電動(dòng)機(jī)串聯(lián)電動(dòng)機(jī)串聯(lián) 電阻反轉(zhuǎn)起電阻反轉(zhuǎn)起動(dòng)動(dòng)KT線圈失電線圈失電KM2KM1L+L-QF并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路KM3KM1KM2KAKT.

7、17KM3KM2KM2KM1SB2KM2KAKM2SB3KM1SB1KTKM1KM1MRIKM2KM1KT經(jīng)過整定經(jīng)過整定時(shí)間時(shí)間KT動(dòng)斷觸頭動(dòng)斷觸頭延時(shí)閉合延時(shí)閉合, KM3線圈得線圈得電電KM3觸頭閉觸頭閉合合切除電阻切除電阻電動(dòng)機(jī)全速電動(dòng)機(jī)全速運(yùn)行運(yùn)行KM2KM1L+L-QF并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路并勵(lì)直流電機(jī)正反轉(zhuǎn)控制線路KM3KM1KM2KAKT.18 能耗制動(dòng)是指保持直流電動(dòng)機(jī)的勵(lì)磁電流不能耗制動(dòng)是指保持直流電動(dòng)機(jī)的勵(lì)磁電流不變，將電樞繞組的電源切除后，立即使其與制動(dòng)變，將電樞繞組的電源切除后，立即使其與制動(dòng)電阻連接成閉合回路，電樞憑慣性處于發(fā)電運(yùn)行電阻連接成閉合回路，電樞憑慣性

8、處于發(fā)電運(yùn)行狀態(tài)，將動(dòng)能轉(zhuǎn)化為電能并消耗在電樞回路中，狀態(tài)，將動(dòng)能轉(zhuǎn)化為電能并消耗在電樞回路中，同時(shí)獲得制動(dòng)力矩，迫使電動(dòng)機(jī)迅速停轉(zhuǎn)。同時(shí)獲得制動(dòng)力矩，迫使電動(dòng)機(jī)迅速停轉(zhuǎn)。.能耗制動(dòng)控制線路能耗制動(dòng)控制線路三、制動(dòng)控制線路.19L+KVQFKM2KAKA1VRKM1KM2KM1KM1KT1RBSB1KM1KT2KT1并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理 IKM3SB2KM1KM1RBKAMUKM4KM4KM3KT2R1R2AKM1L電路組成分析電路組成分析.20L+KVQFKM2KAKA1VRKM1KM2KM1KM1KT1RBSB1KM1KT2KT1并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理并

9、勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理 IKM3SB2KM1KM1RBKAMUKM4KM4KM3KT2R1R2AKM1L合上合上QF.21L+KVQFKM2KAKA1VRKM1KM2KM1KM1KT1RBSB1KM1KT2KT1并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理 IKM3SB2KM1KM1RBKAMUKM4KM4KM3KT2R1R2AKM1L按下按下SB1.22L+KVQFKM2KAKA1VRKM1KM2KM1KM1KT1RBSB1KM1KT2KT1并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理 IKM3SB2KM1KM1RBKAMUKM4KM4KM3KT2R1R2AKM1LKT1瞬

10、時(shí)斷瞬時(shí)斷開延時(shí)閉合開延時(shí)閉合觸頭閉合觸頭閉合.23L+KVQFKM2KAKA1VRKM1KM2KM1KM1KT1RBSB1KM1KT2KT1并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理 IKM3SB2KM1KM1RBKAMUKM4KM4KM3KT2R1R2AKM1LKT2瞬時(shí)斷瞬時(shí)斷開延時(shí)閉合開延時(shí)閉合觸頭閉合觸頭閉合.24L+KVQFKM2KAKA1VRKM1KM2KM1KM1KT1RBSB1KM1KT2KT1并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理 IKM3SB2KM1KM1RBKAMUKM4KM4KM3KT2R1R2AKM1L按下按下SB2.25L+KVQFKM2K

11、AKA1VRKM1KM2KM1KM1KT1RBSB1KM1KT2KT1并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理 IKM3SB2KM1KM1RBKAMUKM4KM4KM3KT2R1R2AKM1LKV閉合閉合KM2線圈得電線圈得電KM2閉合閉合能耗制動(dòng)開始能耗制動(dòng)開始.26L+KVQFKM2KAKA1VRKM1KM2KM1KM1KT1RBSB1KM1KT2KT1并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理 IKM3SB2KM1KM1RBKAMUKM4KM4KM3KT2R1R2AKM1L速度減小到速度減小到一定值時(shí)一定值時(shí),KV分?jǐn)喾謹(jǐn)?27L+KVQFKM2KAKA1VRKM1

12、KM2KM1KM1KT1RBSB1KM1KT2KT1并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理并勵(lì)直流電動(dòng)機(jī)能耗制動(dòng)原理 IKM3SB2KM1KM1RBKAMUKM4KM4KM3KT2R1R2AKM1L電動(dòng)機(jī)停轉(zhuǎn)電動(dòng)機(jī)停轉(zhuǎn).28.反接制動(dòng)控制線路反接制動(dòng)控制線路直流電動(dòng)機(jī)的反接制動(dòng)，通常是通過直流電動(dòng)機(jī)的反接制動(dòng)，通常是通過改變電樞兩端電壓極性或改變勵(lì)磁電流的改變電樞兩端電壓極性或改變勵(lì)磁電流的方向來改變電磁轉(zhuǎn)矩的方向，形成制動(dòng)轉(zhuǎn)方向來改變電磁轉(zhuǎn)矩的方向，形成制動(dòng)轉(zhuǎn)矩，從而迫使電動(dòng)機(jī)迅速停轉(zhuǎn)。矩，從而迫使電動(dòng)機(jī)迅速停轉(zhuǎn)。.29L+KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM

13、1KM4KT2L電路組成電路組成分析分析MKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM4KM5KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2.30L+KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2L合上合上QFMKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2KM4KM5.31L+KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2L按下

14、按下SB1KM1線線圈得電圈得電MKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2KM4KM5.32L+KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2LKM1觸觸頭動(dòng)作頭動(dòng)作電動(dòng)機(jī)串電動(dòng)機(jī)串聯(lián)全部電聯(lián)全部電阻啟動(dòng)阻啟動(dòng)MKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2KM4KM5.33L+KVQFKM2KAKM1KM2KM5KM3KT1SB2

15、KT2KT1 IKM3KM1KM4KT2LMKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2KT1經(jīng)過整經(jīng)過整定時(shí)間定時(shí)間KT1動(dòng)斷觸動(dòng)斷觸頭延時(shí)閉合頭延時(shí)閉合, KM6線圈得線圈得電電KM6觸頭閉觸頭閉合合電動(dòng)機(jī)串聯(lián)電動(dòng)機(jī)串聯(lián)R2繼續(xù)啟動(dòng)繼續(xù)啟動(dòng)KM4KM5.34L+KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2LMKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3

16、KM6KM7RBR1R2KV線圈升線圈升高到一定值高到一定值KV觸頭閉觸頭閉合合電動(dòng)機(jī)串聯(lián)電動(dòng)機(jī)串聯(lián)R2繼續(xù)啟動(dòng)繼續(xù)啟動(dòng)KM4KM5.35L+KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2LMKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2KT2經(jīng)過整經(jīng)過整定時(shí)間定時(shí)間KT2動(dòng)斷觸動(dòng)斷觸頭延時(shí)閉合頭延時(shí)閉合, KM7線圈得線圈得電電KM7觸頭閉觸頭閉合合切除全部電切除全部電阻阻電動(dòng)機(jī)繼續(xù)電動(dòng)機(jī)繼續(xù)啟動(dòng)啟動(dòng)全速運(yùn)行全速運(yùn)行KM4KM5.36L+K

17、VQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2LMKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2按下按下SB3KM1線圈失線圈失電電KM4KM5.37L+KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2LMKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2KM1觸頭動(dòng)觸頭動(dòng)作作KM4KM5.38L+

18、KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2LMKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2KM3線圈得線圈得電電KM3觸頭動(dòng)觸頭動(dòng)作作SB3動(dòng)合觸動(dòng)合觸頭閉合頭閉合KM2線圈得線圈得電電KM4KM5.39L+KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2LMKASB3SB1KM1KM4KM2KM5KM3KM2KM2KM1KVKM1KM1KM2KM1KM2KM1KM2KM6KM7KM3KM6KM7RBR1R2KM2觸頭動(dòng)觸頭動(dòng)作作電動(dòng)機(jī)串聯(lián)電動(dòng)機(jī)串聯(lián)電阻反接制電阻反接制動(dòng)動(dòng)KM4KM5.40L+KVQFKM2KAKM1KM2KM5KM3KT1SB2KT2KT1 IKM3KM1KM4KT2LMKASB3SB1KM1KM4KM