constant-frequency造句
例句與造句
- Speed mode control of variable - speed constant - frequency wind energy generation system with double fed induction generator
變速恒頻雙饋風(fēng)力發(fā)電系統(tǒng)的速度模式控制 - Variable - speed constant - frequency ( vscf ) operation is a new high efficient technology for power generation , which has a good future in the field of wind power generating
變速恒頻發(fā)電技術(shù)是一種新型高效的發(fā)電技術(shù)，在風(fēng)力發(fā)電領(lǐng)域有著良好的應(yīng)用前景。 - The feasibility and superiority for the disc - type permanent - magnet synchronous generator used in the direct - dirve variable - speed constant - frequency generator applications is explained
解釋了將盤式永磁同步發(fā)電機應(yīng)用于直驅(qū)式風(fēng)力發(fā)電系統(tǒng)的可行性和優(yōu)越性。 - The wind power generation technology also become research hotspot of many country ’ s scholar . and the direct - drive variable - speed constant - frequency ( vscf ) generation technology is paid attention to more and more for its high efficiency and practicability
它具有結(jié)構(gòu)緊湊、通風(fēng)效果好、轉(zhuǎn)動慣量大和高效率等的特點,比較適用于直驅(qū)式的變速恒頻的風(fēng)力發(fā)電系統(tǒng)中。 - Based on research of wind turbine aerodynamic characteristics , this paper analyzed various control methods for a pitch - controlled system of variable - speed and constant - frequency wind turbine at a wind velocity range higher or lower its speed rating respectively
摘要在風(fēng)力機空氣動力學(xué)特性分析的基礎(chǔ)上，討論了變速恒頻風(fēng)力機組變槳距機構(gòu)在低于額定風(fēng)速階段和高于額定風(fēng)速階段的不同控制策略。 - It's difficult to find constant-frequency in a sentence. 用constant-frequency造句挺難的
- The paper studies the pitch - regulated structure and stand - alone control system about mw wind turbine group . the background of the paper is " mw variable - speed constant - frequency wind turbine group ( no . 2001aa512022 ) " , which is supported by national 863 plan
本文以國家863計劃《兆瓦級變速恒頻風(fēng)電機組》 (課題編號： 2001aa512022 )為背景，主要研究了兆瓦級風(fēng)電機組的變槳距機構(gòu)及其單機控制系統(tǒng)。 - In this article a new type wind generator - ac exited wind generator is introduced which new technology scheme by the variable - speed constant - frequency methods at the present time . the thesis mostly studies the way of some control methods and analysis the characters of vscf wind power system
本文全面介紹了一種最新應(yīng)用于風(fēng)力發(fā)電的變速恒頻技術(shù)、基于變速恒頻技術(shù)的新型電機?交流勵磁發(fā)電機及交流勵磁風(fēng)力發(fā)電機系統(tǒng)的各種控制原理。 - The study indicates that there are some differences between the multilayered films and the uniform films in the dielectric constant - frequency relation and capacitance - voltage chara cteristics . the report also analyses the mechanism of dielectric enhancement of the multilayered thin films prepared by the sol - gel process
研究同時表明， batio _ 3 srtio _ 3多層膜與單層膜的介電頻率色散程度、 c - v特性和介電系數(shù)與溫度的關(guān)系均略有不同。 - The paper has done all - around study on the ac excited of variable - speed constant - frequency ( vscf ) wind power generation . the author has done thorough study on the vscf wind power generation technology using wound - rotor doubly - fed induction generator , from simulation to experiment , from theory to practice . he also did at large theory analysis to the vscf wind power generation technology using cascaded brushless doubly - fed generator , and has established stability theoretical foundation for continue study work
本文對交流勵磁變速恒頻風(fēng)力發(fā)電領(lǐng)域的關(guān)鍵技術(shù)進行了較為全面的從仿真到實驗、從理論到實踐的深入研究，同時對具有廣泛潛在應(yīng)用前景的級聯(lián)式無刷雙饋發(fā)電機變速恒頻風(fēng)力發(fā)電技術(shù)也進行了洋盡地理論分析，為今后進一步的深入研究奠定了一定的理論基礎(chǔ)。 - In this paper , several scheme of vscf is compared firstly , of which gets doubly - fed generating mode . doubly - fed vscf wind power generating system uses a doubly - fed induction generator , which rotate speed can be able to change with wind turbine , and it ensures a constant - frequency output , by controlling the frequency of current input into rotor windings . in vector trans control system , the control of stator active power and the control of stator reactive power can be essentially decoupled , and the former is via torque component and the latter is via exciting component of stator current
本文首先比較了幾種變速恒頻方案，從中選擇了雙饋式變速恒頻方案；它運用雙饋電機的工作原理，允許發(fā)電機轉(zhuǎn)速變化，而在電機轉(zhuǎn)子側(cè)接入低頻勵磁電流，通過控制該電流的頻率，保證雙饋電機定子輸出的頻率恒定；再結(jié)合矢量控制技術(shù)，通過調(diào)節(jié)轉(zhuǎn)子電流來控制定子電流的轉(zhuǎn)矩分量和勵磁分量，相應(yīng)獨立地控制發(fā)電機輸出的有功功率和無功功率。 - With the continuous enlargement in capacity of a wind - power generator , the efficiency improvement of electric power generation had been become more and more important . the variable - speed constant - frequency ( vscf ) power generation , which is served to reach maximum wind - energy capturing and utilization for a variable blade - pitch wind - turbine , is the studying hot - spot of the wind - power generation technique at present
隨著風(fēng)力機組單機容量的不斷增大，提高發(fā)電效率已是風(fēng)力發(fā)電研究的重要內(nèi)容。采用變槳距風(fēng)力機實現(xiàn)最大風(fēng)能捕獲和利用的變速恒頻發(fā)電已成為當(dāng)前風(fēng)電技術(shù)的研究熱點。 - In lately years , people widely pay attention to wind energy because it is a regenerated cleanness energy . it began development in high rate 20 years before . it is a fact that the variable - speed constant - frequency ( vscf ) ac exited wind generator system is a main subject in the wind electric power generator schemes
近年來，風(fēng)能作為一種可再生的清潔能源日益受到世界各國的廣泛重視，風(fēng)力發(fā)電快速發(fā)展已有將近20年的歷史，其中基于變速恒頻技術(shù)的交流勵磁風(fēng)力發(fā)電機發(fā)電方案已經(jīng)是風(fēng)力發(fā)電中的一大重點課題。 - Combined with the advantages of matrix converter , ac - excited generation technique and vector control scheme , the stator flux - oriented vector control model of the variable - speed constant - frequency ( vs cf ) ac - excited generator fed by a matrix converter was developed . simulation studies of the proposed power generation system were carried out
本文還結(jié)合了矩陣式變換器、交流勵磁發(fā)電技術(shù)和矢量控制的優(yōu)點，建立了矩陣式變換器供電的變速恒頻交流勵磁風(fēng)力發(fā)電機定子磁場定向的矢量變換控制系統(tǒng)模型，對矩陣式變換器在交流勵磁發(fā)電系統(tǒng)中應(yīng)用進行了仿真研究。 - Based on them , in this thesis , the one cycle control theory was successfully applied to the detection and control of apf for the first time . an apf using a novel unified constant - frequency integration control method was presented . the method employs an integrator with reset as its core component to achieve the detection and control of distortion current for apf at the same time
文中導(dǎo)出apf功率開關(guān)占空比必須滿足的控制目標方程、求出apf主電路的穩(wěn)態(tài)模型、建立了通用常頻積分復(fù)位控制apf的數(shù)學(xué)模型，用簡單的模擬電路實現(xiàn)apf的通用常頻積分復(fù)位控制電路和通用常頻積分復(fù)位控制apf系統(tǒng)。 - As an advanced power generation and adjusting speed technology of a . c motor , a . c excited machines ( acem ) can be applied in power generation using a variable - speed constant - frequency scheme to produce electricity , in a pumped - storage hydraulic power plants , and in high rate variable speed drive fields
交流勵磁技術(shù)是一種先進的交流電機發(fā)電及調(diào)速技術(shù)，可用于變速恒頻發(fā)電、抽水蓄能電站和大容量調(diào)速場合，能實現(xiàn)電機有功功率、無功功率的獨立調(diào)節(jié)和功率因數(shù)控制。
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