apf 中文意思是什麼

apf 解釋
APF ＝ animal protein factor 【生物化學】動物蛋白因子。

  1. Series apf and simulation parameters

    串聯有源電力濾波器的參數選擇及模擬
  2. Thus, the apf ensures a brighter future for all

    這樣，年度計劃基金才能確定有更明亮的未來。
  3. An improved algorithm based on apf is proposed in this paper

    本文提出了一種人工勢場法的改進演算法。
  4. Are apf contributions restricted to a specific program

    問：年度計劃基金捐獻僅限於給某一特定計劃嗎？
  5. Apf animal protein factor

    動物蛋白因子
  6. Do restricted contributions count toward the district annual programs fund ( apf ) goal

    問：限定捐獻能列入地區的年度計劃基金目標嗎？
  7. The design of apf is very important to both acc and dcc

    濾波器的設計無論對于有源電力濾波器數字實現還是模擬實現都是至關重要的一環。
  8. An adaptive harmonic current calculation arithmetic for apf using pll - produced reference voltage

    產生參考電壓的自適應諧波電流檢測方法
  9. Also, the calculation of the main circuit parameters of the shunt - apf has been developed

    本文同時給出了有源電力慮波器主電路參數選取原則。
  10. But the cost of apf is expensive, so this disadvantage restricts the practical application

    但有源濾波器的成本太高，這缺點又限制了其實際應用。
  11. Secondly, according to the character of this kind of harmonic, the solutions of power filter are deeply analyzed and an optimized topology for series connected hybrid power filter is obtained. by pwm technique, midfrequency transformer and the principle of the magnetomotive force ( mmf ) compensation, the problem to the transfer of the low - frequency harmonic power compensatory signal in the series apf is solved, in technique

    其次，針對acem系統特有的「電源諧波」特性，深入分析了濾波器方案，得到了一種適用於acem系統諧波抑制的串聯混合型有源電力濾波器優化拓撲結構，並採用了pwm調制技術、中頻注入變壓器和磁勢補償原理有效地解決了串聯apf中低頻諧波功率補償信號傳輸的難題。
  12. At present, the typic harmful current detection methods are the fast fourier transform algorithm in frequency domain and methods based on the instantaneous reactive power theory, these methods all require some transform and quick, real - time calculating, so high precision analog multipliers or high speed dsp chip with fast a / d are needed, this results in complex circuit and high cost ， which have restricted the development of apf

    目前畸變電流檢測常用的方法有頻域法的fft和基於瞬時無功理論的畸變電流檢測法。這些方法均有一定的變換，需要快速、實時運算，因此必須使用高速的數字微處理器和高性能a / d轉換器，這必將大大提高系統成本，使得電路結構復雜，在一定程度上限制了有源濾波器的發展。
  13. Based the simplest solutions of control equations, one - cycle controller for the three - phase four - wire apf with four - leg is presented

    基於控制方程的最簡解，建立了單周控制四橋臂三相四線制有源電力濾波器的電路模型。
  14. There is a great market demand to utilize the active power filters ( apf ) to reduce the harmonics of the power system and improve the power quality in china

    伴隨著我國電能質量問題治理工作的深入開展，利用有源電力濾波器（ activepowerfilter ，縮寫為apf ）進行諧波治理將會具有巨大的市場應用潛力。
  15. Meanwhile, the rating of apf deriving from the topology of hybrid active power filter in this paper is much smaller than that of deriving from traditional topology

    同時，本文所研究的混合濾波器拓撲結構，其有源部分的安裝容量相對目前常見的電路有很大程度的降低。
  16. In this thesis, phase - locked loop ( pll ) technogies are used to acquire phase of fundamental current in bais current, which enhances the detecting precision of bais current. and we want the phase of bais current and the phase of system current is the same, so this thesis think of locking the phase of bais current which based on this theory to sure the security and the reliability of apf

    本文採用鎖相技術，以獲得畸變電流中基波電流的相位，進一步提高了畸變電流的檢測精度，並據此原理考慮鎖定補償電流的相位，使補償電流與系統電流相位同步，保證apf安全可靠運行。
  17. 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

    文中導出apf功率開關占空比必須滿足的控制目標方程、求出apf主電路的穩態模型、建立了通用常頻積分復位控制apf的數學模型，用簡單的模擬電路實現apf的通用常頻積分復位控制電路和通用常頻積分復位控制apf系統。
  18. Through theoretic reckoning and simulating analyzing, several control strategies for shunt apf were compared and chose ip - iq arithmetic of the instantaneous reactive power theory control strategy as the right scheme to produce the instructing current. based on it, some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage. two topologies of main circuit were compared and chose the three - phase voltage - source converter with a split - capacitor as its main circuit structure

    通過理論計算和模擬分析，比較了並聯型apf的幾種控制策略的優點和缺點，從中選擇瞬時無功理論控制策略i _ p - i _ q計算方式為指令電流產生的演算法，並在此基礎上增加了抑制系統諧振和平衡直流側電容電壓的控制；比較了並聯型apf主電路的兩種常見形式，從中選擇了三相電壓型變流器的主電路形式；算出適合該apf的直流側電容和出線電感的參數；設計出能有效消除apf產生的高次諧波的高通濾波器。
  19. Active power filter ( apf ) is an advanced power electronic device ， which can be used for compensating harmonics, reactive power and negative sequence current. compared with conventional compensation devices, active power filter has advantages of real - time and accuracy

    有源電力濾波器是一種新型諧波、無功補償裝置，和傳統的補償裝置相比，有源電力濾波器具有很大的優勢：可以對諧波、無功以及負序電流實現實時、準確的補償。
  20. On the other hand, apf with vector operation of unified constant frequency integration ( uci ) control is presented in this thesis

    另外，針對以上方法的不足提出了通用常頻積分控制矢量模式的apf 。
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