逆轉轉矩 的英文怎麼說

中文拼音 [zhuǎnzhuǎn]
逆轉轉矩 英文
counter-rotating torque
  • : Ⅰ形容詞1 (方向相反) contrary; counter 2 [數學] inverse; converse Ⅱ動詞1 (抵觸; 不順從) go aga...
  • : 轉構詞成分。
  • : 名詞1. (畫直角或正方形、矩形用的曲尺) carpenter's square; square2. (法度; 規則) rules; regulations 3. [物理學] moment
  • 轉轉 : pop 1
  1. Because dead time is compensated at the same time, the output waveform is improved, and output torque is strengthened in low frequency

    進行了死區補償,使變器在低頻輸出時波形明顯改善,提高了系統在低頻時的輸出。
  2. The algorithm of svpwm that is adopted by the system implements motor speed - regulation by control of magnitude and phase of motor flux. it can generate less harmonics in the output current of power inverter and less losses of ac motor, reduce pulsant component in output torque and raise availability of dc supply voltage

    系統採用的svpwm演算法通過對空間磁鏈矢量幅值和相位的控制來調節電機速,減少了變器輸出電流的諧波,降低了脈動,提高了電壓的利用率。
  3. 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、脈動及兩相變器電容的影響等方面與各種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。
  4. After the analysis of the state of converter switches, the voltage space vector is received. on the basis of hexagon stator flux trace method of traditional direct torque control, by changing the regulation of stator flux, hexagon and approximate round trace of stator flux can be got when using different voltage space vector. the fast regulation is realized when three - value regulator is used to adjust torque

    通過對變器開關狀態的分析進而得到電壓空間矢量,並且論述了電壓空間矢量與和磁鏈之間的關系,使用兩點式調節方法對定子磁鏈進行調節,實現六邊形磁鏈軌跡和圓形軌跡方案,對採用三值調節器進行調節,以實現的快速調節。
  5. Flux position & error in flux magnitude and error in torque are used as fuzzy state variables. fuzzy logic is used for choosing the switching state. a fuzzy logic controller can choose the switching states according to a set of fuzzy rules based on both specialists " experience and knowledge, which improves the response performance of the system effectively during start - up and change in load

    作為本文的一個創新點,針對普通的直接控制在給定躍變時反應較慢的缺點,提出了一種模糊控制器,把磁鏈位置、磁鏈誤差和誤差作為模糊輸入變量,應用模糊邏輯來確定變器的開關狀態,該模糊控制器根據一套基於專家經驗和知識的模糊規則來選擇開關狀態,從而有效地提高了系統在啟動和負載突變時的響應速度。
  6. Specific issues examined are : compensation for the variation of the stator resistance, the offset error of the dc bus voltage, the voltage error generated by the forward voltage drop the dead time of the switches, improvement of the steady state performance, and the speed sensorless control for the pmsm dtc drive system are of major concern in this thesis

    定子電阻變化,直流母線電壓漂移,開關器件反向相電壓降、變器死區時間引起的電壓誤差的補償,提高系統穩態運行性能以及永磁同步電機直接控制的無速度傳感器運行方案等問題都是本文研究的重點。的快速響應是直接控制演算法的一個卓越的性能。
  7. Some research about sensorless control of induction motors in recent years has been introduced in chapter one. in chapter two, a field - oriented control system with current regulator and voltage source inverter ( vsi ) is presented firstly, which is proved in theory that the voltage feed - forward decoupler can be omitted, the good decoupled control properties of flux current and torque current is also validated by experiments with speed - sensor based on f240dsp real system

    論文第二章從異步電機的基本數學模型入手,介紹了一種基於子磁場定向的帶電流內環控制的電壓型變器輸出閉環矢量控制結構,在理論上證明了該模型可省略電壓前饋解耦環節,採用f240dsp晶元構建的帶速度傳感器實驗系統驗證了其定子電流勵磁分量和分量有良好的解耦控制特性。
  8. The operating principles of svpwm and associated control algorithms are also covered in the paper. by using svpwm to control the magnitude and phase angles of the spatial voltage vector, the speed control of the drive system in this paper can reduce the output of current harmonics, lower the torque ripple, and improve the energy efficiency

    本文還對svpwm的工作原理和控制演算法進行了研究,控制系統採用svpwm演算法,通過對空間電壓矢量的幅值和相位的控制來調節電機速,減少了變器輸出電流的諧波,降低了脈動,提高了電壓的利用率。
  9. Because direct torque control requires very high performance of real - time, the popular microcomputer core dsp is used as controller in the design of hardware. its high speed of running is suitable for the experiment. in the main circuit, there is a highly integrated power element : ipm as inverter, which includes seven igbt, has high switch frequency and fault diagnosis function

    在本控制系統的具體實現上,由於直接控制對實時性要求很高,因此在硬體方面,採用了目前比較流行的數字信號處理器( dsp )作為系統的控制器,其處理速度高的特點正好符合本實驗的需要:在主電路中,本系統使用了集成度高的功率器件:智能功率模塊( ipm ) ,作為變環節,其集成了七個igbt ,實現了高開關頻率變以及故障診斷的功能,從而使控制系統的體積大大縮小、控制更加靈活。
  10. Due to the direct torque control requires very high performance of real - time, the popular microcomputer core dsp is used as controller in the design of hardware. its high speed of running is suitable to the experiment. in the main circuit, there is a highly integrated power element : ipm as inverter, which includes seven igbt, has high switch frequency and fault diagnosis function

    在本控制系統的具體實現上,由於直接控制對實時性要求很高,因此在硬體方面,本課題採用了目前比較流行的數字信號處理器( dsp )作為本實驗的控制器,其處理速度高的特點正好符合本實驗的需要;在主電路中,本系統使用了集成度高的功率器件:智能功率模塊( ipm ) ,作為變環節,其集成了七個igbt ,實現了高開關頻率變以及故障診斷的功能,從而使控制系統的體積大大縮小、控制更加靈活。
  11. In dtc system, the concept of space vector is introduced to analyze and control the ac motor, the electromagnetic torque and flux are calculated and controlled in the stationary coordinate, and the optimal pwm gating signals are generated to control the inverter to acquire high dynamic torque according to the output of the bang - bang regulators

    直接控制採用空間矢量的概念來分析三相異步交流電動機的數學模型和各物理量,直接在靜止坐標系下計算與控制交流電動機和磁鏈,藉助于離散的兩點式調節產生pwm信號,直接對變器的開關狀態進行最佳控制,以獲得的高動態性能。
  12. The performance of the electric vehicle is improved greatly in which the harmonic wave of output voltage, power loss and torque pulsation of the system are decreased by controlling the switch angles

    它運用規則采樣法產生正弦脈寬調制波,通過開關角的控制抑制變器輸出電壓中的諧波分量,降低了電動機的損耗和脈動,使電動車的運行性能得到了較大改善。
  13. The inverters based on space - vector pwm technique have many good qualities, such as less pulsating torque, higher usage of dc bus voltage, less switching loss, better high - speed regulation performance, so it is applicable for the high - performance motor control system

    電壓空間矢量pwm技術( svpwm )將變器和電動機視為一體,由之控制的變頻器具有輸出脈動量低、直流電壓利用率高、開關損耗小、高速調速性能好等優點,適用於高性能電機調速控制系統。
  14. An orthogonal matrix is an invertible matrix for which the inverse is equal to the transpose

    正交陣是可陣,其陣等於其陣。
  15. This results in large ripples in the torque and the stator flux linkage, and nonconstant switching frequency

    這將導致和定子磁鏈較大的脈動以及變器開關頻率的不恆定。
  16. This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation ; the influence of snubber circuit, dead time effects, and modulation frequency to igbt pwm inverterbridge is taken into account, too

    本文對雙極性調制的無刷直流電動機模擬,分析了速和調制頻率對影響;並綜合考慮緩沖電路、控制死區及載波頻率對pwm變電路中igbt開關損耗的影響。
  17. The direct torque control theory is a kind of new control method after vector control theory in ac control field. it calculates and controls the torque and the flux of ac electromotor in stator coordinate using the voltage space vector. adopting the stator magnetism field direction method, it recurs to discrete pang - pang control producing pulse width modulation signal and controls the switch state of the transductor when better quality steady - state performance is produced

    直接控制技術是繼矢量控制技術之後交流調速領域中新興的控制技術,它採用空間矢量分析的方法,直接在定子坐標系下計算並控制交流電動機的和磁鏈,採用定子磁場定向,藉助于離散的兩點式控制產生脈寬信號,直接對變器的開關狀態進行最佳控制,以獲得的高動態性能。
  18. The new approach achieved inverter switch ' s duty ratio control and made torque ripple minimum

    該方法實現了變器開關周期的占空比控制,使感應電動機的脈動達到最小。
  19. Simulator program is designed and the simulated waveforms of the voltages, currents, speed and torque are shown using this method of svpwm

    編制了系統模擬程序,給出svpwm控制,兩相變器?異步電動機系統樣機的電壓、電流、速、模擬波形曲。
  20. In this scheme, the torque of motor is calculated and controlled in the staler reference frame. by using stator field orientation, the optimum switching mode is achieved to control the inverter

    它直接在定子坐標系下計算和控制交流電動機的,採用定子磁場定向控制,直接對變器的開關狀態進行最佳控制。
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