rotating-field power 中文意思是什麼
rotating-field power
解釋
旋轉磁場功率-
Power mosfet is adopted to switch heavy current of magnet core in order to control rotating magnetic field effectively
為了使磁場得到有效控制，本文採用功率nosfet實現電磁線圈大電流的開關。 -
Based on characteristics above, a new theory of “ controlling movement by moving ” is proposed, which means that controlling welding arc by moving magnetic field. a new device for generating rotating magnetic field is designed ; magnetic head and excitation power source are included
本文基於以上幾種磁場形態和勵磁方式的特點，提出了「以動制動」的控制思想，即用動態變化的磁場來控制電弧的運動，研製了一套新型旋轉磁場發生裝置，本裝置包括磁頭裝置和勵磁電源兩部分。 -
By the test of three - dimensional distribution, form character, rotating frequency and magnetic field intensity of rotating magnetic field, it showed that the magnetic field produced is a highly rotating magnetic field and mainly distribute on welding arc region, rotating frequency and magnetic intensity can be regulated through excitation power source
通過對產生磁場的空間分佈，形態特徵，以及旋轉頻率和場強大小的測試證明該磁場是一個高速旋轉的磁場空間，而且磁場主要集中分佈在焊接電弧區域內，磁場的旋轉頻率和場強大小都可以通過勵磁電源進行良好調節。 -
Based on the investigation of analysis methods for the overvoltage striking on rotating electric machines and its research status at home and abroad, the safety forecast theory and the analysis method for the switching overvoltage of large power stations are firstly presented based on the field - circuit analysis, and the transient field distribution and the insulation condition in the stator winding insulator stricken by the switching overvoltage in large power stations are studied and analyzed on line
本文在分析和總結國內外關于旋轉電機過電壓分析方法及其研究現狀的基礎上，首次提出了基於場路結合的廠站操作過電壓安全預測理論和分析方法。本文研究了大型電站中的操作過電壓沖擊波在發電機定子繞組絕緣介質中暫態電場的實時分佈狀態，在線分析發電機的絕緣工作狀況，搜索發電機內部可能突發絕緣事故的區域，預測發電機內部可能發生絕緣事故的故障點，並重點研究了大型發電機絕緣安全在線預測分析方法和建立了大型發電機絕緣安全評估模型。
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