速率因數 的英文怎麼說
中文拼音 [sùlǜyīnshǔ]
速率因數
英文
speed factor-
Steric effects in rate constants for bimolecular dissociation
離解反應速率常數中的方位因素The system is different from traditional silicon controlled dephasing method, such speedy modules as whole controlled electric and electronic equipment igbt and high frequency pwm controlling methods are employed, and the voltage of exchanging power supply of motor of beam pumping units can be controlled automatically, so there is no problem of power factor being decreased brought by silicon controlled phase single controlled, power factor in power net of beam pumping units " motor is enhanced really
由於雙管齊下，電機電網側的功率因數得到了大大提高。與傳統的可控硅移相控制方式不同，本系統採用全控型電力電子器件igbt等快速模塊及高頻pwm控制方式，對抽油機電機的交流供電電壓進行自動控制，不存在可控硅相控角所帶來的功率因數變差的問題，真正提高了抽油機電網側的功率因數。The way of fast calculating the virtual value of voltage by pc, the way of calculating the power frequency and power factor
數據處理技術包括：交流電壓有效值快速計算的原理與方法；電網電壓頻率、功率因數的計算原理與方法。It can acquire the voltage on the test appliance and current in the circuit. and it can see these electrical signals as its input and calculates based on the data and gives the parameters and waveform that user needed. the parameters we can get through calculation include power factor, joule ' s integral, available value, maximal value, minimum value, time constant etc. recently, there are many scholar is studying the algorithm that calculate the parameter using test data, but many of them adopt the heuristic method, not using the test data directly
本課題研製一套電器試驗參數高速採集系統，能夠檢測試驗迴路中試品上的電壓信號和迴路中的電流信號，並根據這些電信號的數值利用計算機進行在線計算，並給出用戶需要的各種電參數值和用戶需要的波形圖，通過計算得到的電器參數有功率因數、焦耳積分、有效值、最大最小值、時間常數等。The intrinsic chemical reaction rate constant was insensitive to the precursor and the calcinations history of cao, but the product layer diffusivity was affected by these two factors in the initial stage and decreased to a constant value with increasing conversion of cao
化學反應速率常數不受氧化鈣的先驅物與其鍛燒程序所影響，但產物層擴散系數在初始階段則受到上述兩因素的影響，並隨著氧化鈣的轉化而減少至一定值。Quick and frequent cutting for a few sets of capacitors shall be carried out, of which the factors of electric power shall be maitained in optimum condition so as to minimize the line loss, increase effective output capacity of distrubuting transformer and optimize the quality of power demand
對多組電容器進行快速而頻繁的投切，使受電功率因數始終保持在最佳狀態，從而最大限度地降低線路損耗和增加配電變壓器的有效輸出容量，優化用電質量。A novel high - power pollution - free smps is presented in this paper, which accomplishes simultaneously the goal of soft - switching pwm, the input / output isolation, the output voltage regulation and three - phase pfc with a single - stage power processor and simple pseudo - phase - shift control circuit. therefore, compared with the normal two - stage system, the single - stage power supply has simpler structure, lower cost, higher efficiency and easier to control. the proposed smps can be used in the three - phase power system, and can output high power over kw - order and input / output ( i / o ) isolation dc power supply
本文提出的新型無污染大功率開關電源正是採用三相三線制輸入電源，利用單級偽相移零電壓零電流開關脈寬調制（ pps - zvzcs - pwm ）全橋變換器完，成功率因數校正（ pfc ）和輸出電壓快速調節、隔離的雙重功能，並且該變換器開關管在零電壓或零電流下通斷，顯著的減小了emi 。It is easily digital realization and fulfil higher power factory. to testify the correctness, the control scheme is simulated using the dynamic simulated tool simulink of matlab 5
本文設計了一個基於高速數字信號處理器（ dsp ）的功率因數整流器系統的硬體平臺，給出了系統軟體設計的詳細流程圖。This strategy has many advantages : solving the problems that the system is unsteady under super - synchronization ; improving power factor of stator ( it is unity relative to that of rotor ) ; no rotor position sensor and no initial position measurement, easily building up doubly fed speed adjustment system with speed sensorless because adjusting speed is taken in the rotor coordinate and rotor current vector fixing is implemented
該方案由於引入了定子電流勵磁分量的閉環控制，使系統同時具有轉速和勵磁調節兩個調節通道，具有如下優點：一、解決了超同步工作工況不穩定的問題；二、提高了定子側的功率因數（與轉子側功率因數為1相比） 。三、由於速度調節在轉子坐標系下進行，並以轉子電流矢量定向，所以無須轉子位置傳感器，也不用檢測初始位置，易於組成無速度傳感器雙饋調速系統。In order to instantly and real time eliminate harmonic and compensate reactive power, the definition of traditional reactive power, an integral average during a period, which is confined to apply under some circumstances. for example, when the load power varies swiftly, it will lead to can " t compensate reactive power rapidly
為了實時、快速的補償無功功率和消除諧波，傳統的基於平均值計算出來的功率因數，是以一個周期內積分而得出來的平均值，這在某種情況下就限制了它的應用，如系統負載功率快速變化時，就不能做到迅速、實時地補償無功。The results showed that the mic was controlled by three factors ( the content of ag ~, the proportion of surface and the status of crystal ) at normal temperature with which matched m = amoexp ( - kc ~ 3. it also showed that when the ag ~ was on the powder ' s surface, the anti - bacterial capacity of power was controlled by the action of cell death. 4 ) the toxicological test the toxicological properties of the powders, which was prepared in different route, was tested
建立了抗菌粉體的抗菌機制：粉體的最小抑菌濃度由銀離子含量、粉體比表面積和二氧化鈦的結晶狀況三種因素控制，它們遵循m am _ 0exp （ - kc _ （ ag ） ）關系；當粉體表面的銀離子過量時，粉體的抗菌能力受細胞死亡反應控制，為一級反應，粉體的抗菌能力越強，細菌的死亡速率常數越小。In order to satisfy the real - time measurement, we studied the fast arithmetic of virtual value of voltage and current, power factor
為了滿足實時檢測要求，研究了計算電壓、電流有效值和功率因數的快速演算法。The contributions done are as follows : according to the mathematical model of doubly fed motor and the theory of vector control, a unit power factor of rotor control scheme is proposed. in the doubly fed adjustment system, in order to control magnetic torque of motor this scheme is designed by controlling the reverse direction between rotor voltage and current to keep the vertical direction between rotor current and flux. it is known from theoretical analysis that for partly decoupling this scheme is only effective under sub - synchronization speed, but not control the system and obtain steady state since speed adjustment system ca n ' t adjust the magnitude of rotor flux under sup - synchronization
而傳統的無速度傳感器雙饋調速矢量控制系統，由於採用磁鏈定向方法，在同步速附近存在較大的工作死區，針對上述問題，本文做了如下的研究工作：本文從雙饋電機的數學模型出發，根據矢量控制的基本原理，提出了一種轉子側功率因數為1的雙饋電機矢量控制方案的設想，即在雙饋調速時採用轉子電流定向的方法，並控制外加轉子電壓與轉子電流始終反相，以保持了轉子電流與轉子磁鏈矢量垂直，通過控制轉子電流的大小來達到控制電機電磁轉矩的要求。In this text, around the specification of frequency conversion machine, proceed some study, has finished some work as below primarily : this text will study the output characteristic and the output characteristic of variable frequency speed regulation system. the input characteristic include power quadrangle theory, the relation of cos ( ? ), and f
本文圍繞著變頻系統的特殊性，進行了一些研究，主要完成以下的研究工作：本文對變頻調速系統進行了輸入特性和輸出特性的研究，輸入特性包括：功率四邊形理論，功率因數、效率和頻率三者之間的關系。Finally, it proposes a new scheme that controls the power factor of pmsm. the model can control the power factor by controlling the stator current on the basis of the speed control
最後，建立了永磁同步電動機功率因數控制的模擬模型，在轉速控制的基礎上，通過控制定子電流來實現功率因數控制。Frequency conversion is generally acknowledged by the home and abroad that it has a great future with excellent accent speed, a brake capability, extensive scope of application, high efficiency rate, great credit rate factor and joint electricity effect and other many merits
變頻調速以其優異的調速和起制動性能，高效率、高功率因數和節電效果，廣泛的適用范圍及其它許多優點而被國內外公認為最有發展前途的調速方式。It can improve the utilize of power by fed back the power generated by motor machine to power - net, has the benefit of improving power factor, reducing the harmonious feeding back to the power - net and can enhance the performance of converters for the constant voltage of dc - link
該裝置能夠提高電能的利用率，把由電動機產生的再生能源回饋到交流電網，並且能提高裝置的功率因數，減少對電網的諧波污染。由於pwm整流，變頻器中間直流環節的電壓能保持穩定，提高了逆變器的調速性能。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
交流勵磁技術是一種先進的交流電機發電及調速技術，可用於變速恆頻發電、抽水蓄能電站和大容量調速場合，能實現電機有功功率、無功功率的獨立調節和功率因數控制。This thesis demonstrates a " ac - dc - ac locomotive emulation experiment platform " system, which is used to simulate behaving environment of locomotive system in several control circumstance and obtain kinds of performance parameters, so it contributes to the design of locomotive. to user - computer interaction, this thesis devises corresponding graphical user interfaces, so users can configure various modules " and controllers / parameters with knowing little about the details of this emulation system
本論文擬構造「交?直?交型電力機車模擬試驗臺」一系統，模擬電力機車系統在各種控制條件下（如牽引、制動等）的運作情況，觀測各種性能指標參數（如變壓器一次側電壓/電流/功率因數、牽引電機電壓/電流、牽引力、機車速度等） ，這對于電力機車的設計和運行具有一定的指導意義。The test shows that the vector control speed system has low inverter power, high power factor, perfect dynamic performance, wide speed range. it suits the variable speed system of fan machine and pump and has good prospect on industry application
試驗證明調速系統具有變頻器功率小、功率因數高、動態性能好、調速范圍廣等優點，適用於風機、泵類負載的調速，有良好的工業應用前景。分享友人