dc bus 中文意思是什麼
dc bus
解釋
直流總線-
It measures fluid pressure in the industry process and converts it into 420 ma dc signal output ; at the same time, by field bus hart protocol
它測量工業過程流體壓力，將其轉化成4ma20ma dc信號輸出。 -
The control of dc servo motor based on pc104 bus
104總線的直流伺服電動機控制 -
Discussion on dc system connection way and bus switching mode of 2 groups of accumulators
兩組蓄電池的直流系統接線方式和母線切換方式探討 -
The 7 years ' applicable practices indicate that the frequency modulation technology with dc bus voltage ripples is very effective to suppress acoustic resonances
7年的使用實踐表明，直流脈動電壓頻率調制技術對抑制聲諧振現象十分有效。 -
With an aim at this problem, this paper suggests the modulation scheme with dc bus voltage ripple by using the front - end active power factor correct circuit based on the analysis of necessary conditions of producing acoustic resonances
針對這一現象，在分析產生聲諧振的必要條件的基礎上，重點提出了利用前級有源功率因數校正電路的直流母線脈動電壓的調制方案。 -
The spwm control has a good waveform but the dc bus voltage utilization is low
Spwm控制波形質量好，功率管開關頻率低但直流電壓利用率低。 -
The result shows that, when the full - bridge power converter is joined with boost / buck dc chopper in parallel, it can serve a dc voltage of over 340v and a power of 800w, meanwhile, as output voltage of the fuel cells changes due to loadings, the sliding - mode controller can cause more rapid responses and robustness to the dc bus voltage source
實驗結果顯示，本論文之全橋式功率轉換器與升壓/降壓直流截波器並聯供電時，輸出電壓可達340v以上，輸出功率約為800w ，同時，當燃料電池之輸出電壓因負載而改變時，本論文所提出之滑動模式控制器能使直流鏈電壓具有較快速的響應及強健性。 -
Offline control strategy refers to work under known load condition, according to the load condition calculate the instruction voltage, then store them in the datasheet, each time read the instruction voltage from the datasheet, when input dc bus voltage changes, a pi controller is used to adjust the instruction voltage thereby fix the output voltage rms
離線型控制是指在已知負載的情況下，計算出控制用的指令電壓，存在數據表中，每次讀取表中的數據，當輸入母線電壓變化時通過pi調節調整指令電壓來控制輸出電壓。由於計算量不大，用單片dsp就可以實現指令電壓的計算和svm演算法，主要用於負載情況已知且固定的場合。 -
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、逆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轉矩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。轉矩的快速響應是直接轉矩控制演算法的一個卓越的性能。 -
That is why more and more people pay more attention to it. the technology applied in resonant dc link inverter ( rdcli ) is one of soft switching technologies. it makes the current or voltage in dc bus return zero periodically ; through resonant technology in the circumstance of switching change
作為軟開關技術的一種應用? ?諧振直流環節逆變器，在直流環節利用諧振技術使母線電壓或電流周期性地回零，為開關在換流時刻提供零電流或零電壓條件，從而達到降低開關損耗的目的。 -
How to measure the current in a low stray inductance dc bus design
如何在母線電感很小的情況下測量電流？ -
420 ma dc two wire system field bus hart protocol
4 20ma dc二線制帶現場總線hart協議 -
The automation system used in afore - mentioned no. 2 line are siemens s7 series while the drive system are the siemens 6se70 series of all digital ac drive system with a uniform common dc power bus supply. the hmi system is wincc system which presents good visional interfaces. l1 communication uses profibus which adopts tcp / ip protocol for communications with welder, thickness gauge, air knife and l2
攀鋼冷軋廠2 #鍍鋅鋁機組基礎自動化系統設計採用西門子s7系列，傳動採用西門子6se70系列全數字交流傳動系統並由統一的公共直流母線供電， l1人機界面採用wincc系統，為生產操作提供了較好的可視化界面， l1通訊採用profibus總線，與焊機、測厚儀、氣刀、 l2等採用tcp / ip協議。 -
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 ）將逆變器和電動機視為一體，由之控制的變頻器具有輸出轉矩脈動量低、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。 -
Abstract : a new kind of variable frequency speed - governing experiment system which has the structure of two parallel inverters at dc bus and output of inverter driving two series asynchronous motors at the same shaft is presented in this paper
文摘:提出了一種雙逆變器直流母線並聯、變頻輸出驅動同軸串聯的兩臺異步電動機結構的新型變頻調速實驗系統。 -
The hardware design includes these main circuits such as current sensing, dc bus voltage sensing, space - vector pwm waveform generation, the system protection and so on
在硬體實現中，重點討論了電流、電壓、速度檢測單元以及pwm發生單元和系統保護功能等。 -
The conventional rectifiers produce harmonic problem in power system. while three - phase pwm voltage source rectifiers ( vsr ) can provide constant dc bus voltage and get low harmonic distortion of input current. it also has line power feedback capability
傳統的整流裝置是電網污染的主要來源，三相電壓型pwm整流器具有輸出電壓恆定、能實現單位功率因數運行的特點，甚至可以實現電能回饋電網。 -
The problems such as the circuit and the working mode of the pwm dc / dc modules, the configuration of the parallel connection, the usage of the input dc bus, and the system control strategy were analyzed and discussed as well
論文對pwmdc dc電源的電路結構和工作模式、並聯系統的結構、是否採用直流輸入母線、以及系統的控制方案等問題進行了分析和討論。 -
Space vector modulation technology with many advantages relative to spwm, such as nice dynamic response ability, high utilization ratio of dc bus voltage, and convenience of composing digital control system, is adopted to control the asvg
由於電壓空間矢量調制（ svpwm ）具有動態響應速度快、直流側電壓利用率高以及便於數字化控制等優點，故以此作為asvg的控制方法。 -
Three kinds of the usual methods of rotor flux estimation are compared and analyzed, and the method of rotor flux estimation based on the voltage model is studied in detail. and the output phase voltage is reconstructed by means of the dc - bus voltage and the switching states of the inverter, the effect of the dead time and saturating voltage - drop of the switches on flux estimation is discussed. and the method of synchronizing instant speed identification is also studied deeply
本文對三種常用的轉子磁鏈觀測方法進行了對比分析，在此基礎上著重研究了基於電壓模型磁鏈觀測方法，分析了利用直流母線電壓和逆變器三相開關管的狀態進行輸出電壓重構方法，討論了死區時間和開關管飽和壓降對磁鏈觀測結果的影響，深入研究了同步瞬時轉速辨識方法。
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