電動機效率 的英文怎麼說

中文拼音 [diàndòngjīxiàolǜ]
電動機效率 英文
motor efficiency
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 機 : machineengine
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 電動機 : electric motor; motor （俗稱「馬達; 電滾子」）電動機並聯法 parallel connection of the motors; 電...
  • 電動 : motor driven; power driven; power operated電動擺 motor pendulum; 電動扳手 electric wrench; 電動泵...
  • 效率 : productiveness; efficiency; productivity; workpiece ratio
  1. For increasing the effective material peak - value power ( empvp ), solving the contradiction between enhancing the pmsm ' s flux - weakening capability in the electromotor state and reducing the pmsm ' s connatural adjustment ratio in the dynamotor state and improving the efficiency of the pmsm, some solving method are taken as follows : the influence of length / diameter ratio to the empvp is analyzed, and the optimum size of length and diameter is chosen

    主要是從提高電機的有效材料峰值功率、解決pmsm提高電動機運行狀態時的弱磁擴速能力和減小發電機運行狀態時的電壓調整率之間的矛盾及提高電機的效率著手，分析了長徑比、氣隙長度對有效材料峰值功率的影響，並確定了它們的最佳尺寸。
  2. This strategy effectively solves the power distribution between the apu and batteries during the drive of the heb. the power control model and multi - torque switching strategy of the driving motors control the charging - recharging current of the batteries within a wide range, which contribute to the improvement of the efficiency

    該策略很好的解決了車輛行駛時輔助動力系統與蓄電池組之間的功率分配，並且驅動電動機採用功率控制模式以及多級動力輸出切換策略，有效的控制了蓄電池的充放電電流，從而提高了整車效率。
  3. Through analyzing and researching the problem of variable frequency to working frequency of high - power electromotor in theory, the key of conversion is pointed out in the paper. on the basis of analyzing equivalent circuit diagram and vector - diagram of induction - motor, the phase of working frequency power whether or not consistent with the output phase of variable frequency power at the moment of conversion is the key to decide whether the conversion is successfully

    本論文針對大功率電機變頻轉工頻轉換存在的問題在理論上作深入細致的研究，根據感應電動機的等效電路和相量圖分析，指出大功率電機變頻轉工頻能否成功，關鍵在於變頻轉工頻瞬時，工頻電源和變頻輸出電源是否相位一致。
  4. Design engineers now selecting pmbldc motors over conventional dc or induction motor drives for the following reasons : 1 ) the absence of brushes results in an essentially maintenance free operation and eliminates the undesirable effects of commutation such as sparks, brush - loss, radio - frequency interference, etc. 2 ) the low inertia of the rotor enhances the quality of the mechanical response of the motor, shortening the acceleration and deceleration time. 3 ) utilizing rare - earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size. 4 ) because of the absence of commutation segments, the stator construction is simple

    現在的工程師們更為青睞永磁無刷直流電動機是因為以下幾點原因： （ 1 ）去除了電刷的永磁無刷直流電動機徹底地免除了維護而且消除了我們不希望的由於換向帶來的火花、電刷損耗以及無線電干擾等等； （ 2 ）低轉動慣量的轉子提高了電機機械響應的質量，從而縮短了電機加速和減速的時間； （ 3 ）高矯頑力稀土永磁材料的使用使得同樣尺寸的永磁無刷直流電動機比傳統的直流電動機效率高； （ 4 ）由於沒有機械換向部分定子的結構簡單了。
  5. This paper studies the variable - voltage energy saving theory and its implementation for asynchronous motor with light load, compares several kinds of scheme of improving efficiency in detail and confirms the variable - voltage energy saving method, that is adjusting the input voltage by detecting the iron loss and copper loss of motor directly. in addition, the directness *, simpleness and availability of the method are verified by the emulational experimental results with simulink of the matlab. the circuit of the general inverter based on the tms320f240 dsp was used in this paper, and the practicable program was compiled

    本文分析了異步電動機輕載時降壓節能運行的原理，對幾種提高效率的方案進行了比較，確定了通過直接檢測電動機鐵損和銅損來實時調節輸入電壓以達到高效節能目的的控制方法，應用matlab軟體對系統進行模擬，在基於tms320f240dsp的通用型變頻器上編制了實用化的程序，形成了完整的樣機，對其進行了測試，並給出了試驗結果。
  6. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance

    通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。
  7. Stepping drive of synchronous motors, upgrading the design idea of stepping motors from combined electromagnet theory to rotary magnetic field theory, will make the capability and efficiency of the increment control system improved to a new level, which is the research purpose of ac step motion drive this paper begins with the direct torque control method for pmsm to expatiate ac step motion control theory distinctly

    用同步電動機實現步進傳動；將步進電動機的設計思想從組合電磁鐵理論提高為旋轉磁場，使增量運動系統的容量和效率發展到一個新的水平，這就是交流步進傳動的研究目的。為了比較清楚地闡述交流步進理論，本文首先從永磁同步電動機的直接轉矩控制演算法入手來分析。
  8. Because of the worsening of energy resource and the requirement of motor manufacturers to enlarge their profit, to increase motor ' s efficiency and reduce the cost of effective material are more and more considered in recent years

    由於能源危機的加劇和電動機製造企業提高自身經濟效益的需要，近年來，提高電動機效率、節約其生產成本越來越重要。同時，進一步提高電動機的計算機輔助設計水平也一直廣為關注。
  9. Diesel - hydraulic locomotives are slightly more efficient than diesel - electrics, but were found in many countries to be mechanically more complicated and more likely to break down

    這個是你錯了，對于內燃機車來說，液力傳動是比電氣傳動效率高的，因為內燃機所謂的電氣傳動不僅僅有電動機，還有發電機，都有效率損失。單純講電機和液力的話，無疑電機效率更高。
  10. Based on many references form civil and abroad, the author mainly studies the measurment theory and method for flux, raising height, axial power and rotational velocity. avoiding many complicated and intermediate courses for power wastage analysis, introduces the electric measurement and using efficiency curve of motor in measureing axial power, and satisfies the automatization of the device. the paper also provides a new method, inductive winding, in measuring rotational velocity of electromotor, supplys limitations of other method in measuring rotational velocity of electromotor in water, and meet practical needs in developing diving electric pump for corporation

    作者在參閱大量國內外有關文獻，著重探討了水泵流量、揚程、軸功率、轉速的測試原理和測試方法，提出了採用電測法並結合電機效率特性曲線測量水泵軸功率，從而避免了損耗分析法中大量復雜的中間過程，滿足了試驗裝置的自動化測量要求；採用漏磁感應線圈法測量電機轉速，彌補了其它轉速測量方法對水下電機測試的局限性，適應了萊恩公司開發潛水電泵的實際需要。
  11. Phascon technology introduced in this paper is to improve the outer operation parameters of ac motor, by on line detecting the motor phase angle between current and voltage to adjust the input supply voltage to the motor, to realize the flexible power management mode for ac motor, so as to increase the operation efficiency and reach energy - saving purpose

    本文闡述的相控技術是從改善電機外部運行參數入手，通過實時檢測電動機運行相位角來調整電機的輸入電壓和電流大小，實現柔性化能量管理模式，提高電機效率達到節電的目的。
  12. Simulation results showed that this control strategy can decrease the stator current anti improve the efficiency of the system

    模擬結果表明永磁同步電動機直接轉矩控制系統最大轉矩電流比控制可以降低定子電流，減小損耗，從而提高系統效率。
  13. Method for determining losses and efficiency of three - phase cage induction motors

    三相籠式感應電動機損耗和效率的測定方法
  14. Abstract : this paper pointed out a few problems of series, harmonic and efficiency etc., to be needed considering, it introduced constructed by all - controlling power electronics device igbt by means of multi - pwm control technology, and this kind of convertor can be the used for direct frequency conversion governorof midolle / high - voltagea. c mo tors

    摘要：提出用於高壓電動機變頻調速電源需考慮的串聯、諧波和效率等幾個問題;介紹由全控型電力電子器件igbt按多重化pwm控制技術構成、目前已商品化的高壓變頻器，可用於中、高壓交流電動機的直接變頻調速。
  15. In the actual cases, there are many motors often operate on low load with low power factor and low efficiency, also there are many motors operate on the magnetic flux saturate region with high energy consumption, a large mount of energy used by ac motors is wasted due to all of those factors

    在實際運行中，許多電動機經常處在低效率、低功率因數的欠載運行狀態下，還有許多電機則是鐵芯磁通常進入飽和區的高能耗電機，這些因素均可導致大量電能的浪費。
  16. The algorithm is also applied in the broken rotor bars detection in squirrel cage induction machines, which is dependent on detecting the twice slip frequency modulation due to the speed or torque in the stator current, and the rotor bar faults can be detected effectively without some preprocessing

    指出可以利用信號的小波脊線來提取頻率隨時間連續變換的信號的瞬時頻率，並將該瞬時頻率提取演算法成功地應用到異步電動機定子起動電流信號的分析中，有效地提取出了轉子斷條故障特徵。
  17. The device used transducer as power can gain great amplitude effectively and output great power

    採用夾心式換能器作為激勵源能有效地獲得大振幅振動，並提高機電耦合效率。
  18. The new drive system adopts gear drive instead of the traditional rubber belt transmission, therefore realizes optimum transmission of pumping unit by overcoming the disadvantages of the belt transmission

    該系統把傳統的抽油機膠帶傳動改變為齒輪硬性傳動，徹底克服了因膠帶傳動而造成的抽油機傳動效率低、電動機過載被燒毀，以及因慣性載荷造成抽油機的沖擊和振動等弊端，實現了傳動最優化。
  19. Decelerated devices of mixing pools have the following problems in the course of operation : they ca n ' t satisfy the demands of g standards of mixing technology and the power of electric motors is big while the efficiency is low ; sealing of the devices is not good and the phenomenon of oil - dripping is severe ; operation is bad and the work of maintenance and repair is huge

    成都市自來水總公司六廠一、二、三期混合池所用立式攪拌機共計45臺，機在運行過程中存在如下的問題：不能滿足混合工藝g值的要求，且電動機功率過大但效率低下；減速機密封不嚴，漏油情況嚴重；運行狀況差，維護維修工作量大。
  20. The thrust of the new arcjet is improved from the original 100 - 135 s to 148 - 166 s, efficiency is improved from the original 21 % - 32 % to 32 % - 53 %. the results of the experiment prove that regenerative cooling method can improve the efficiency of low power arcjet remarkably

    新發動機的比沖由原來的100 - 135s提高到148 - 166s ;效率由21 % - 23 %提高到32 % - 53 % 。實驗結果證明這種再生冷卻設計能大大提高低功率電弧加熱發動機效率。
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