振蕩阻尼 的英文怎麼說
中文拼音 [zhèndàngzǔní]
振蕩阻尼
英文
oscillation damping-
This paper also studies an hvdc system based on leee fbm, a svc system based on ieee fbm and a statcom system based on ieee fbm. it proves the function of supplementare subsynchronous damping controller ( ssdc ) in the above devices to mitigate ssr. it also analyzes the influence of input signal of ssdc on ssr mitigation, tdeng hvdc as an example
在psasp小干擾線性化平臺psaspaisst上，對基於ieeefbm的hvdc系統、基於ieeefbm的svc系統和基於ieeefbm的statcom系統分別進行了ssr小干擾穩定分析，驗證了在這些裝置中安裝次同步振蕩阻尼器（ ssdc ）對r的抑制作用，並以hvdc為例，研究了ssdc輸入信號對其抑制ssr的影響。Overdamped forced oscillation
過阻尼強迫振蕩Torsional interaction exists between hvdc converters and turbine - generators, and negative electrical damping provided by hvdc may cause subsynchronous oscillation ( sso ) that can lead to turbine - generator shaft failure and electrical instability at oscillation frequencies lower than the fundamental system frequency
高壓直流輸電（ high - voltage - direct - current - - - - hvdc ）系統與臨近同步發電機組之間存在著扭振相互作用， hvdc的電氣負阻尼作用有可能引起機組在次同步頻率范圍的扭轉振蕩。The damper is mounted on the free end of the rotor. the experiments done show that the oil whip can be good damped by the passive electromagnetic damper
在理論計算的基礎上還進行了實驗研究，在不停機的條件下，通過被動式電磁阻尼器成功地在線消除了系統的油膜振蕩。It will be seen that short engagements inadequate damping and high values of "a" result in oscillatory responses.
可以看出，「短」攔截，不適當的阻尼系數和高的「a」值都會發生振蕩的響應曲線。Modelling method research of rlc damping - oscillatory ircuits based on matlab7
阻尼振蕩電路建模方法研究The development and disappearance of the acoustic oscillations are influenced by the nozzle throat size and open - time of the plug
計算結果表明，這些影響包括了聲振的強度、阻尼和頻率，發動機點火后噴管喉部尺寸和堵蓋打開的時間影響到振蕩波的發展和消失。We study the time evolution law of the atomic response in an open - type inversionless lasing system when the probe or driving field is off - resonance, and compare the law with that obtained when the probe and driving fields are resonant. we find that the detuning has considerable effects on the time evolution law : when the probe or driving fields is off - resonance, the dispersive responses for the probe and driving fields are no longer 0 and the two - photon coherence is no longer a pure real ; the variation of the probe detuning can make the time evolution law of the population distributions and the gain ( absorbtion ) of the driving field changing obviously ; with detuning increasing, the time evolution behavior of the gain ( absorbtion ), dispersion of the probe field and the two - photon coherence will gradually diviate from the evolution law of the standard damped oscillator ; with the driving detuning increasing, the oscillating time of the dispersion of the driving field becomes longer, the amplitude and the stationary value increase
研究了探測場或驅動場失諧情況下開放的型無粒子數反轉激光系統中原子響應的時間演化規律，並與探測場和驅動場都共振時的演化規律進行了比較.我們發現失諧對時間演化規律有顯著的影響;當驅動場或探測場失諧時，原子對探測場和驅動場色散的響應不再為零，雙光子相干不再是純實量;探測場失諧的變化將使粒子布居和驅動場增益（吸收）的時間演化規律明顯改變;隨著失諧的增大，探測場增益（吸收） 、色散和雙光子相干隨時間的演化行為逐漸偏離標準阻尼振子的演化規律;驅動場色散驅動場失諧量的增加而振蕩時間變長，振幅和穩定值變大According to these theories we know the reason of the emergence of low frequency oscillation is lacking positive damping even appearing negative damping. this problem can be classified as dynamic stability
從而得出，電力系統低頻振蕩是由於系統正阻尼不足甚至產生負阻尼而引起的，可以將其歸類為動態穩定問題。Through the deep study of f. d. demello dynamic model of electromechanical transition and synchronous generator theory, we proposed a new control strategy of excitation device that can eliminate the negative - damping phenomenon, which is directly against the cause of producing negative - damping represented as low frequency oscillation in the system
通過深入研究f . d . demello機電暫態的動力學模型以及同步發電機理論，針對系統產生負阻尼即低頻振蕩的原因，我們提出了一種新的可消除負阻尼現象的勵磁控制策略。On the contrary, because of the effect of positive damping provided by the inverter, the unit near a inveter will have no subsynchronous oscillation risk. based on the same method described above, a damping study is carried out for a hybrid ac / dc system, which include a hvdc link and an ac transmission line in parallel
研究表明，系統整流站附近的同步發電機組要承受電氣負阻尼作用，因此有可能引起機組低頻扭轉振蕩模式失穩；而hvdc的逆變站向其臨近同步發電機組提供正阻尼，因而機組不存在次同步振蕩危險。The characteristics of damping shows that the uncompensated parallel ac transmission line can release the coupling between the hvdc and generator and improve the damping of the system, hence the possibility of subsynchronous oscillation decrease. in such a system scheme, the hvdc system dominates the changes of damping due to the small magnitude of the damping provided by ac line. when the ac transmission line is compensated with a fixed series capacitor, the situation will be totally different
其中，並列運行的無串補交流輸電線路可以緩解hvdc與其臨近機組之間的機電耦合程度，改善hvdc的電氣負阻尼特性，從浙江大學博士學位論文摘要而減輕機組發生次同步振蕩的危險性，此時系統的整體電氣阻尼特性由hvdc的性質決定;但若交流線路中存在串聯補償電容，則系統幅值較大的電氣負阻尼不僅可能使整流站機組發生次同步振蕩，逆變站附近機組同樣存在發生次同步振蕩的可能性，此時系統的整體阻尼特性由串聯補償電容的性質決定。Here the system is similar to open - loop control system
二階欠阻尼振蕩系統是系統中較為常見的控制系統。Electromagnetic compatibility - testing and measurement techniques - damped oscillatory magnetic field immunity test
電磁兼容試驗和測量技術阻尼振蕩磁場抗擾度試驗Electromagnetic compatibility - part 4 - 10 : testing and measurement techniques - damped oscillatory magnetic field immunity test
電磁兼容性.第4 - 10部分:試驗和測量技術.阻尼振蕩磁場抗擾性試驗Therefore, in order to build a precise extended-time navigator, some means must be found to damp out these oscillations.
因此，為了建成精確的長期工作的導航儀，一定要尋找某些方法來把這些振蕩阻尼掉。Design of supplemental sub - synchronous oscillation damping control based on h robust control theory of hvdc system
魯棒控制理論的高壓直流輸電系統附加次同步振蕩阻尼控制設計The method of hvdc small signal modulation is applied to enhance the small signal stability of the system ; the results are investigated based on the prony method
採用prony方法，研究了直流小信號調制對提高低頻振蕩阻尼的作用。The pole - placement method is used in the design of controllers. the 4 - machine system example validates the effectiveness of this prony ' s method based damping controller design. 4
並用4機系統對pss的設計以及tcsc的控制信號選取作為例子表明了本文基於prony方法設計低頻振蕩阻尼控制器的有效性。The damped solutions are very complicated. there are unoscillatory damped solutions and oscillatory damped solutions. the damped solutions are almost strongly damped, particularly in the degenerated situation
而阻尼解一般都較復雜，即存在無振蕩阻尼解，也存在振蕩阻尼解，阻尼解幾乎都是強阻尼的。分享友人