旋轉場式電機英文怎麼說

旋轉場式電機 的英文翻譯

旋轉場式電機 例句

1. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
   在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于 電 力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發 電 機 勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了 電 力系統中特別引人注目的幾個量- - 轉 子角、 轉 子 轉 速、發 電 機 q軸 電 勢eq 、暫態 電 勢e ' q 、有功功率pe 、 機 械功率pm 、汽門開度、 機 端 電 壓vt ，在此基礎上建立了實用的 電 力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發 電 機 的非線性綜合控制器及 機 端 電 壓最優控制器，通過模擬實驗與採用常規的按 電 壓偏差進行調節的比例 式 勵磁控制器+汽門比例控制及採用常規的按 電 壓偏差進行調節的比例 式 勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發 電 機 的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高 電 力系統的暫態穩定性，並且在 電 力系統遭受小干擾時同樣具有良好的調節性能。
2. 63t full - hydraulic, full - revolving floating crane is primarily suitable for lifting of water constructional works and for lifting and transshipment of piece cargo as well
   63噸全液壓、全 旋 轉 浮 式 起重 機 ，主要適用於水工建築吊裝作業，亦可用於單件貨物的裝卸與過駁作業。
3. Acoustics - test code for the measurement of airborne noise emitted by rotating electrical machines
   聲學.測定 旋 轉 式 電 機 發射的空氣聲的試驗規程
4. Custome made programme for projector rotation
   訂制投影 機 旋 轉 程 式
5. Basic test method for rotating traction electrical machines
   旋 轉 牽引 電 機 基本試驗方法

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