The development and situation of variable frequency drive technology 變頻調(diào)速技術(shù)的現(xiàn)狀與應(yīng)用
Variable frequency drive of the blower for wood dust combustion furnace 旋風(fēng)式木粉燃燒鼓風(fēng)機(jī)變頻技術(shù)改造
The fault detection and diagnosis for ac variable frequency drives is studied systematically in this dissertation 本文研究了電動(dòng)機(jī)變頻調(diào)速系統(tǒng)的故障檢測(cè)與診斷問(wèn)題。
By using the special control algorithm of variable frequency drive system , the above said problem is solved 設(shè)計(jì)了基于變頻驅(qū)動(dòng)系統(tǒng)的專(zhuān)用控制算法來(lái)解決“倒發(fā)電”問(wèn)題。
Providing innovative water and wastewater treatment solutions as well as variable frequency drive pumping and control packages , in central california -從事城市給水處理市政污水處理工業(yè)給水廢水處理和固體廢棄物處理。
Based on existing research results , this dissertation first presents a new fault detect and diagnosis method for ac variable frequency drives based on signal processing 本文在現(xiàn)有研究的基礎(chǔ)上,就基于信號(hào)處理的電動(dòng)機(jī)變頻調(diào)速系統(tǒng)的故障檢測(cè)及診斷方法進(jìn)行了深入研究。
Analyzing the performance curves of pumps and network in a variable flow pumping system , concluding the influence factors of energy saving and the optimal ranges of variable frequency drive ( vfd ) 摘要通過(guò)分析變頻水泵及管網(wǎng)系統(tǒng)在變工況下的特性曲線,得出影響水泵變頻節(jié)能效果的主要因素和變頻調(diào)速的適用范圍。
The concept of the basic spectral residual is presented , a detection decision function is constructed and a simple strategy for fault detection is provided . this provide a valid way to detect the faults occurred in the variable frequency drives . 4 提出了基本譜殘差概念,定義了決策函數(shù),給出了一種簡(jiǎn)單的故障決策策略,為電動(dòng)機(jī)變頻調(diào)速系統(tǒng)的故障檢測(cè)或狀態(tài)監(jiān)控提供了一種有效途徑。
With the development of ac variable frequency drives and its widely application in industry , the reliability of the variable - speed drive system has been considered much more than ever . a great deal of research effort has been and being spent on the fault detection and diagnosis of the drive system 隨著電動(dòng)機(jī)變頻調(diào)速系統(tǒng)在工業(yè)應(yīng)用中地廣泛使用,調(diào)速系統(tǒng)的可靠性問(wèn)題愈益引起人們的重視,調(diào)速系統(tǒng)的故障檢測(cè)與診斷問(wèn)題已逐漸引起眾多研究者的關(guān)注。
Firstly , the control functions of high - voltage variable frequency drive system and multilevel inverters and the demands of this monitoring system are analy z e d . the thoughts of hardware design , the whole structure and the function of each hardware module are introduced respectively in this paper 論文首先從監(jiān)控系統(tǒng)的設(shè)計(jì)要求入手,著重分析了高壓變頻驅(qū)動(dòng)系統(tǒng)和多電平變頻器控制的要求和功能,闡述了監(jiān)控系統(tǒng)的硬件設(shè)計(jì)的思路,構(gòu)建出系統(tǒng)的整體結(jié)構(gòu),并分別介紹了系統(tǒng)各個(gè)硬件模塊的功能。