移頻變換器 的英文怎麼說

中文拼音 [yíbīnbiànhuànqì]
移頻變換器 英文
frequency shift converter
  • 移 : Ⅰ動詞1. （移動） move; remove; shift 2. （改變; 變動） change; alter Ⅱ名詞（姓氏） a surname
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  1. A novel phase - shifted zero - voltage and zero - current switching pwm dc / dc full - bridge converter is presented in this thesis, which is based on the groundwork of summarization of the development of power electronics in recent years and lucubration in theoretical basis of modern high frequency soft switching power convert technique and analysis of operation principle, characteristic of the circuit and inherent drawbacks of the traditional phase - shifted zero - voltage switching pwm dc / dc full - bridge converter

    本文在對近年來電力電子學科的發展高度綜述和對現代高頻軟開關功率變換技術理論基礎深入研究的基礎上，對傳統的移相控制zvspwmdc dc全橋變換器的工作原理、電路特性、存在的缺點進行了分析，在此基礎上提出了一種改進型的移相控制zvzcspwmdc dc全橋變換器。
  2. A novel bi - directional dc / dc converter was introduced in the dissertation, which based on refer much converter data. the soft switching, phase - shifted pwm and bi - directional dc / dc converter hang together, depress circuit switch ullage and noise effectively, which provide condition to increase switch frequency, efficiency and reduce size and weight for the converter ; at the same, the converter have the virtue of structure compact, voltage and current stress small etc such as ordinary hard switch converter

    本文作者在查閱國內外大量雙向dc dc變換器資料的基礎上，採用一種新型雙向dc dc變換器的拓撲結構，把軟開關技術和移相控制pwm技術以及雙向dc dc變換器技術有機結合在一起，有效地降低了電路的開關損耗和開關噪聲，為變換器裝置提高開關頻率、效率以及降低尺寸及重量提供了良好的條件。
  3. To utilize the advantages of dsp chips, the system should be computing sources economical. according to digital signal processing theory, the poly - phase fir can help reduce the workloads of the ddc / duc. therefore, adding the complex carrier mixers, the channelization system ( a method of using a single wideband facility to transmit many relatively narrow - bandwidth signals. by subdividing the frequency spectrum used in the wideband channel ) can be formed utilizing the characters of fft

    為了使開發出的軟體可以適用於高速dsp器件開發，節省系統資源，課題首先從數字信號處理的理論進行分析，得出可以利用抽樣率轉換的數字濾波器的特點，即多相濾波實現數字上下變頻計算負擔的減小，之後進一步將多相濾波器與頻譜搬移部分結合，通過公式的推導，得出可利用快速傅立葉變換的特點實現多路信號的通道化發射和接收的處理模型。
  4. The soft switching, phase - shifted pwm and bi - directional dc - dc converter hang together, depress circuit switching loss and noise effectively, which provide condition to increase switch frequency, efficiency and reduce size and weight for the converter ; at the same time, it is proved the converter can achieve zvs in larger load variation, and the converter has the virtue of structure compact, voltage and current stress small such as ordinary hard switch converter

    該變換器把軟開關技術和相移控制pwm技術以及雙向dc - dc變換器技術有機結合在一起，有效地降低了電路的開關損耗和開關噪聲，為變換器裝置提高開關頻率、效率以及降低尺寸及重量提供了良好的條件;同時，能拓寬零電壓開關的范圍，使變換器在較寬的負載變化范圍內都能實現軟開關。
  5. At the aspect of hardware design, it adopts pulse distributor and the technology of single polar voltage drive to accomplish the function of controlling and driving stepmotor ; it adopts the technology of pulse width modulation and cmos h - bridge drive to accomplish the function of controlling and driving dc servomotor ; it adopts d / a convertor to accomplish the function of controlling ac transducer ; it adopts the technology of digital phase detection to accomplish the function of detecting the feedback position signal of induction phase shifter ; it adopts dsp ’ s capture cell to accomplish the function of detecting the feedback position signal of photoelectric coder

    硬體方面，採用脈沖分配器和單極性電壓驅動技術實現了步進電機的控制和驅動功能;採用脈寬調制技術和cmos互補h橋驅動技術實現了直流伺服電機的控制和驅動功能;採用d / a轉換器實現了交流變頻器的控制功能;採用數字化相位檢測技術實現了感應移相器位置反饋信號的檢測功能;採用dsp的捕獲單元實現了光電編碼器位置反饋信號的檢測功能。
  6. A novel cycloconverter - rype three - phase hf link inverter topology for soft - switching based on phase - shifted full - bridge mode is proposed, whose main advantages are as follows : under the conditions of d < i < and overlap - d, the switches of the leading leg are turned on at zvs and the switches of the lagging leg are turned off at zcs and all switches of the cycloconverter circuit are commutated in the overlapping mode in the interval of zero voltage, which makes the circuit realize soft switching to the utmost extent and reliably solve the problem of peak voltage caused by the storing energy of leakage inductance of hf transformer

    論文提出一種新型移相全橋軟開關周波變流型三相高頻鏈逆變器，電路的主要優點是：前級移相全橋的移相角控制在_ d _ i和_ （ overlap ） - _ d條件下，超前橋臂零電壓開通，滯后橋臂零電流關斷，並使周波變流器所有開關在零電壓期間重疊換相，使整機開關最大程度地實現了軟開關，並可靠解決了高頻變壓器漏感儲能引起的電壓尖峰問題。
  7. The characteristics of the full bridge series resonant converter with the separate transformer are analyzed. the resonant frequency and other circuit characteristics are discussed. the full bridge series resonant converter is analyzed by circuit simulation

    對帶可分離變壓器的全橋串聯諧振變換器的電路特性進行了分析，分析了變換器的諧振頻率，利用正弦等效的方法分析了變換器的電路特性，對雙極性控制和移相控制全橋串聯諧振變換器進行了電路模擬。
  8. Full bridge phase - shifted zero - voltage - switched converter ( fbps - zvs converter ) is a successful implementation for soft - switching and is easy for usage in dc / dc converter. the core technique to reach digitalization is dsp technique. in order to reach both high frequency and digitalization of converter, a fbps - zvs converter based on dsp control is proposed in this paper the converter worked on the high frequency of 150k. periphery hardware circuit is simple and its bulk is small. the converter realizes soft - switching over half load and get a high efficiency. it achieves the aim of digital control and error protect

    實現數字化的核心是dsp技術。本文立足於將開關電源的高頻化與數字化相結合，具體研究內容為一種基於dsp控制的移相全橋軟開關zvs變換器，該變換器工作于較高的開關頻率（ 150k ） ，外圍硬體電路結構簡單、器件少、體積小；在半載以上實現了開關管的zvs開關，取得了較高的變換效率；實現數字化控制與故障保護，變換器取得了較好的性能效果。
  9. By using phase shifting control between right bridge leg and left bridge leg, the output cy cloconverter commutating while the bi - polarity three - state high frequency ac volage from the input cycloconveter is zero, . and commutation overlap of the output cycloconverter and polarity selection of the input voltage, the leakage inductance energy and the output filtering inductance current are naturally commutated, and zvs switching of the output cycloconverter are realized, the surge voltage and surge current of the output cycloconverters are overcome

    通過輸入周波變換器右橋臂相對左橋臂的移相，讓輸出周波變換器功率開關在輸入周波變換器輸出的高頻交流電壓為零期間進行換流，並藉助輸出周波變換器換流重疊和輸入電壓極性選擇，從而實現了變壓器漏感能量和輸出濾波電感電流的自然換流、輸出周波變換器的zvs開關，解決了輸出周波變換器固有的電壓過沖和環流問題。
  10. Ac link is fully verified by the simulation and the pricinple test. this kind of converter lay the key technical foundation on new type electronic transformer, regulated sinusoidal ac power supply, ac regulator

    220v 10 （ 50hz ） 220v （ 50hz ）單極性移相控制電壓源高頻交流環節ac ac變換器的模擬與原理試驗證實了這類變換器新概念的正確性與先進性。
  11. The twelve kinds of modes and equivalent circuits of voltage mode ac - ac mode ac / ac converters with high frequency link within one high frequency switching period are carefully analyses. by using the state - space averaging approach, the converter ' s averaging model is presented, and the design criterion of key circuit parameters and the output characteristic curve are given

    以全橋橋式拓撲為例，論述了單極性移相控制的原理、單極性移相控制電壓源交?交型高頻環節ac ac變換器在一個高頻開關周期內的十二個工作模式及其等效電路。採用狀態空間平均法建立了變換器平均模型，獲得了關鍵電路參數的設計準則和變換器的外特性曲線。
  12. The standard is designed to give a new technical solution for a broad range of applications, such as very low bit rate conversational services and entertainment quality broadcast, interactive video - on - demand services etc. for the enhancement of the coding efficiencies, the new standard adopts new tools as following : multiple reference pictures, variable block - size with seven block sizes in motion prediction, quarter - pixel accuracy for motion vector, short word - length integer transform, context - adaptive entropy coding and loop filter deblocking

    H . 264 / avc標準支持從低帶寬、高誤碼率的無線移動視頻通信到高帶寬、低誤碼率的有線視頻廣播等多種應用，因此，日益受到業界的關注。為了實現更高的編碼效率， h . 264 / avc標準採用了很多新的編碼技術，如多參考幀預測、多尺寸編碼塊模式、 1 / 4像素精度運動矢量、整數變換量化、基於內容的熵編碼、新型幀內預測、去除方塊效應的濾波器等。
  13. However these converters become more complicate. phase - shift zvs technique has been used in bidirectional dc / dc converters since it can realize zvs for all switches without auxiliary switches. however when the amplitude of input voltage is not matched with that of output voltage, the current stresses and rms currents of the converters become higher, in addition the converters can not achieve zvs under light - load condition

    諧振、準諧振或多諧振技術方案，變換器的電壓電流應力較高，變頻控制增加了濾波器設計的難度；能量緩沖吸收電路或有源鉗位電路方案，由於需要增加多個額外輔助元件，增加了變換器的復雜性；全橋相移技術方案，由於主電路無需增加額外元件，只需利用相移控制，即可實現軟開關，因此引起關注。
  14. The thesis analyses the effect of phase shift control and the utilization of the transformers primary sides saturable inductor to the transformers secondary sides voltage duty cycle, and basic on the buck converter s small signal ac model the converter s model is deserved, and infers control to output transfer function

    論文通過分析移相控制方式和高頻變壓器一次側的飽和電感對高頻變壓器二次側方波電壓占空比的影響，在buck變換器小型號模型的基礎上建立了帶飽和電感的移相控制零電壓開關全橋變換器的小信號模型，推導出控制到輸出的小信號傳遞函數。
  15. The radio frequency receiver supports interface for instrument and base station and air interface for mobile station, and it takes the task of magnifying low noise and down - convert and digital baseband processor filtering and magnifying intermediate frequency to reverse link signal. the digital baseband processor samples the received signal after down - convert radio frequency signal to intermediate frequency signal and processes other processing and supports interfaces to computer, next sends data to computer. the gps receiver supports interface for instrument and gps system, and receives gps system signal, next it demodulates the correlative information and sends out benchmark clock signal we need

    射頻接收部分主要為儀器和基站、移動臺提供空中介面，其主要任務是在反向鏈路上對接收到的射頻調制信號進行低噪聲放大、射頻下變頻變換、中頻濾波放大等;數字基帶部分為對接收信號變頻為中頻后進行a / d采樣，以及其他的rsp處理並和計算機提供介面，將數據送至計算機進行后臺處理、顯示等; gps接收機部分為儀器和gps系統提供介面，接收gps系統信號並解調相關信息，輸出所需的電文及時鐘基準信息等。
  16. The small - signal model in main circuit are built by using average circuit model. the relationship of each small signal and efficiency duty cycle are described completely. magnitude - frequency characteristics and phase - frequency characteristics of each main transfer function are got

    本文分析了全橋移相zvspwmdc - dc變換器的基本原理，運用平均等效電路法建立了主電路小信號模型，並詳細分析了各小信號變量與有效占空比之間的關系，得到了各主要傳遞函數的幅度和相位頻率特性。
  17. However, these converters become more complicate. phase - shift bi - directional dc - dc converter is attractive since it operates with fixed frequency, has small voltage and current stress and can realize zvs without auxiliary switches

    相移控制雙向dc - dc功率變換器因具有功率器件電壓，電流應力小，定頻工作和無須增加輔助器件即可實現功率器件的零電壓開關條件等優點而受到關注。
  18. Its test results indicate : voltage mode inverters with high frequency link have the advantages such as high frequency electrical isolation, simple topology, two - stage power conversions, high power density, bidirectional power flow, good line current waveform, low audio noise, high converting efficiency, and high input power factor etc. this kind of converter lay the key technical foundation on new type high power density, high efficiency and low cost asi

    設計的1kva270v 10 % dc / 115v400hzac單極性移相控制雙向電壓源高頻環節逆變器原理試驗表明，這類逆變器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac / hfac / lfac ） 、功率密度高、雙向功率流、音頻噪音低、變換效率高、網側功率因數高等優點，為新一代高功率密度、高變換效率、低成本航空靜止變流器奠定了關鍵技術基礎。
  19. Higher frequency, modular construction and digitalization is the main development tendency in the field of the switching power supply. high power density and high frequency converter is based on soft - switching techniques

    實現高頻化的主要途徑是軟開關技術，全橋移相零電壓脈寬調制變換器是軟開關pwm技術在全橋直-直變換器中較成功的應用例子，並具有較好的工程實現價值。
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