Y-2012-1-H00-X102現(xiàn)貨;
Y-2012-1-H00-X102供應(yīng)。
變頻調(diào)速的特點(diǎn)
變頻器采用正弦渡脈沖寬度調(diào)制,內(nèi)部采用微處理器實(shí)現(xiàn)全數(shù)字化控制。可選擇采用按轉(zhuǎn)子磁場(chǎng)定向的矢量控制技術(shù),即使不安裝測(cè)速發(fā)電機(jī)或編碼器也能得到很寬的調(diào)速范圍、平滑的調(diào)速特性及快速的動(dòng)態(tài)響應(yīng)。
主電路采用不可控整流簡(jiǎn)化了結(jié)構(gòu),使電網(wǎng)功率因素的大小與逆變器輸出電壓的大小五關(guān)且接近于l。中間環(huán)節(jié)采用電容器實(shí)現(xiàn)電壓耦合。逆變器功率器件采用IGBT可提高載渡頻率,使輸出波形更接近正弦波。為了提高制動(dòng)性能可選加制動(dòng)單元,當(dāng)變頻器處于制動(dòng)狀態(tài)時(shí),吸收由電機(jī)回饋主電路直流環(huán)節(jié)的能量。
變頻器控制部分主要由電源板、控制板、操作面板構(gòu)成。編碼器和現(xiàn)場(chǎng)總線接口可根據(jù)需要選用,可用PC機(jī)進(jìn)行參數(shù)設(shè)定。
10) 月光的森然,樂律的精魂,一切只是幻影,稍縱即逝。
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