| 詳細(xì)參數(shù) |
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變頻不是到處可以省電，有不少用變頻并不一定能省電。
作為電子電路，變頻器本身也要耗電（約額定功率的3-5%）。一臺(tái)1.5匹的空調(diào)自身耗電算下來也有20-30W,相當(dāng)于一盞長(zhǎng)明燈.率補(bǔ)償，能速度控制的誤差；通過反饋估算磁鏈幅值，低速時(shí)定子電阻的影響；將輸出電壓、電流閉環(huán)，以動(dòng)態(tài)的精度和度。但控制電路環(huán)節(jié)較多，且沒有引入轉(zhuǎn)矩的調(diào)節(jié)，所以性能沒有根本。
矢量控制(VC)：
矢量控制變頻調(diào)速的做法是將異步電動(dòng)機(jī)在三相坐標(biāo)系下的定子電流Ia、Ib、Ic、通過三相－二相變換，等效成兩相靜止坐標(biāo)系下的交流電流Ia1Ib1，再通過按轉(zhuǎn)子磁場(chǎng)定向變換，等效成同步坐標(biāo)系下的直流電流Im1、It1(Im1相當(dāng)于直流電動(dòng)機(jī)的勵(lì)磁電流；It1相當(dāng)于與轉(zhuǎn)矩成正比的電樞電流)，然后模仿直流電動(dòng)機(jī)的控制，求得直流電動(dòng)機(jī)的控制量，經(jīng)過相應(yīng)的坐標(biāo)反變換，實(shí)現(xiàn)對(duì)異步電動(dòng)機(jī)的控制。其實(shí)質(zhì)是將交流電動(dòng)機(jī)等效為直流電動(dòng)機(jī)，分別對(duì)速度，磁場(chǎng)兩個(gè)分量進(jìn)行控制。通過控制轉(zhuǎn)子磁鏈，然后分解定子電流而轉(zhuǎn)矩和磁場(chǎng)兩個(gè)分量，經(jīng)坐標(biāo)變換，實(shí)現(xiàn)正交或解耦控制。矢量控制的提出具有劃時(shí)代的意義。然而在實(shí)際應(yīng)用中，由于轉(zhuǎn)子磁鏈難以準(zhǔn)確觀測(cè)，特性受電動(dòng)機(jī)參數(shù)的影響較大，且在等效直流電動(dòng)機(jī)控制中所用矢量變換較復(fù)雜，使得實(shí)際的控制效果難以達(dá)到分析的結(jié)果。
【公 司】： 福建鴻飛達(dá)自動(dòng)化科技有限公司福建省福州市高新區(qū)新保路正榮財(cái)富中心SOHO B幢8樓
產(chǎn)品價(jià)格以電話或者QQ詢價(jià)為準(zhǔn)，發(fā)布價(jià)格不做參考，圖片也一樣
FX-232ADP
FX-232AW
FX-232AWC
FX-232AWC-H
FX-232CAB-1
FX-232CAB-2
FX2-32MR
FX2-32MT
FX2-40AP
FX2-40AW
FX2-48MR
FX2-48MR-D
FX2-48MT
FX2-64MR
FX2-64MR-D
FX2-64MT
FX2-80MR
FX2-80MR-D
FX2-80MT
FX-2AD-PT
FX2C-I/O-CON
FX2C-I/O-CON2
FX2C-I/O-CON2-S
FX2C-I/O-CON-S
FX2C-I/O-CON-SA
FX2C-I/O-CONS-SA
FX-2DA
FX2N-10GM
FX2N-10PG
PLC FX2N-128MR-001
FX2N-128MR-D
FX2N-128MR-ES/UL
FX2N-128MT-001
FX2N-128MT-D
FX2N-128MT-ES/UL
FX2N-128MT-ESS/UL
FX2N-128SW
FX2N-16CCL
FX2N-16CCL-M
FX2N-16EX
FX2N-16EX-C
FX2N-16EX-ES/UL
FX2N-16EXL-C
FX2N-16EYR-ES/UL
FX2N-16EYS
FX2N-16EYT
FX2N-16EYT-C
FX2N-16EYT-ES/UL
FX2N-16EYT-ESS/UL
FX2N-16LNK-M
FX2N-16MR-001
FX2N-16MR-D
FX2N-16MR-DS
FX2N-16MR-ES/UL
FX2N-16MR-UA1/UL
FX2N-16MS
FX2N-16MT-001
FX2N-16MT-D
FX2N-16MT-DSS
FX2N-16MT-E/UL
FX2N-16MT-ES/UL
FX2N-16MT-ESS/UL
FX2N-16SW
FX2N-1DA-BD
FX2N-1HC
FX2N-1PG
FX2N-1PG-E
FX2N-1RM-E-SET
FX2N-1RM-SET
FX2N-20GM
FX2N-20PSU
FX2N-232-BD
FX2N-232IF
FX2N-2AD
FX2N-2AD-BD
FX2N-2DA
FX2N-2EYT-BD
FX2N-2LC
FX2N-32ASI-M
FX2N-32CAN
FX2N-32CCL
FX2N-32DP-IF
FX2N-32ER
FX2N-32ER-ES/UL
FX2N-32ES
FX2N-32ET
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