M - magnetomotive 中文 - EN166

magnetomotive adj.起磁的，生磁流之力的。

Secondly , according to the character of this kind of harmonic , the solutions of power filter are deeply analyzed and an optimized topology for series connected hybrid power filter is obtained . by pwm technique , midfrequency transformer and the principle of the magnetomotive force ( mmf ) compensation , the problem to the transfer of the low - frequency harmonic power compensatory signal in the series apf is solved , in technique 其次，針對acem系統特有的“電源諧波”特性，深入分析了濾波器方案，得到了一種適用于acem系統諧波抑制的串聯混合型有源電力濾波器優化拓撲結構，并采用了pwm調制技術、中頻注入變壓器和磁勢補償原理有效地解決了串聯apf中低頻諧波功率補償信號傳輸的難題。
This paper theoretically analyses the armature current and magnetomotive force in ac exciter of brushless synchronous machine with rotating rectifier . under the normal or fault conditions of rotating rectifier , the mathematical expressions of the armature current , the m . m . f and induced electromotive force are approached 本文通過對旋轉整流器在正常與故障狀態下的交流勵磁機電樞電流和電樞電勢作了初步的理論分析，推導出旋轉整流器在正常與故障狀態下電樞電流、空間諧波合成磁勢及其感應電勢的數學表達式。
Powerformer have some changes in constract with the conventional generator ， subsequently it also have some new problems in order to have an economical ， efficient ， credible development and application the structure and the philosophy of electromagnetism of powerformer will be on speaking terms changes electrical design ， magnetism design ， thermal design and structural design are have some new changes above all ， the electromagnetism parameter and the harmonic magnetomotive force of powerformer are studied in this paper first ， it mainly utilizes analytics to deduce formula of slot leakage reactance it considers three instances ， including monolayer - slot ， multilayer isometric - slot and multilayer anisometric - slot then ， the analytics and the fem are utilized to calculate slot leakage reactance of stator winding of prototype of powerformer and compare their results second ， the theory of utilitzing fem to calculate the reactance of powerformer is simply introduced ， including stable reactance ， transient and subtransient reactance specially ， the saturated influence of the stable reactance is considered then ， the results are analysed final ， it mainly introduces the influence of harmonic magnetomotive force of stator winding and analyses the harmonic magnetomotive force of stator winding then ， it mainly analyse harmonic magneto - motive force of stator winding through arranging various arrays of stator winding and observe their influence 基于上述原因，本文對powerformer的電磁參數以及定子繞組諧波磁勢進行了研究。首先是用解析法推導出powerformer定子繞組槽漏抗的計算公式，考慮了單層圓形半閉口槽、多層等半徑圓形半閉口槽和多層不等半徑圓形半閉口槽三種情況，并對powerformer樣機的定子繞組槽漏抗用解析法和有限元法進行了計算，并比較其結果；其次，簡要介紹了有限元法計算powerformer電抗參數的原理，包括穩態電抗、瞬態電抗和超瞬態電抗，對穩態電抗考慮飽和影響，對結果進行分析；最后，介紹定子繞組諧波磁勢對電機運行性能的影響并對定子繞組諧波磁勢進行了分析。然后通過對定子繞組進行不同排列來分析定子繞組諧波磁勢，看看繞組排列對諧波磁勢的影響。
A three layered magneto - electro - elastic half - space subjected to vertical mechanical loads , charge or magnetomotive force is analyzed as the numerical example , and the calculative results of two different stacking sequences are compared 以在垂直機械載荷或電載荷或磁感應強度作用下三層半無限壓電壓磁彈性體為算例，并比較了兩種不同材料疊放順序的計算結果。
Through cell ammeter and armature magnetomotive force , we qualitativly analyze that harmonic magnetiv field has influence on motor operating performance , it can ensure whether slot coordination suits well or not 通過槽電流表和槽磁動勢圖定性地分析電機的諧波磁場對電機運行性能的影響，由此確定電機所選槽配合是否合適。
Armature magnetomotive force 電樞磁動勢
Therefore, the magnetomotive force in the air gap is essentially proportional to the primary ampereturns squared . 所以，氣隙中的磁動勢實際上與初級安匝數的平方成正比。