direct current switch 中文意思是什麼

direct current switch 解釋
直流開關
  • direct : adj 1 筆直的,一直線的;正面的。2 直接的。3 直截了當的,直率的,明白的。4 直系的,正統的。5 【語...
  • current : adj. 1. 通用的,流行的。2. 現在的,現時的,當時的。3. 流暢的;草寫的。n. 1. 水流;氣流;電流。2. 思潮,潮流;趨勢,傾向。3. 進行,過程。
  • switch : n 1 (樹上折下的)細樹枝;軟鞭子;鞭打。2 假發;(尾巴上的)毛簇。3 〈美國〉【鐵道】道岔扳子,軌...
  1. The control tactics of space voltage vector are investigated, and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward. by analyzing the current hysteresis control, the relation between switch frequency, and hysteresis bandwidth and input inductance of pwm rectifier is deduced. by applying instantaneous power theory, the principle of pwm rectifier power control is analyzed, and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized, and the simulation results prove that it is correct

    對常用空間電壓矢量控制策略進行分析,提出了給定參考矢量所在區間判斷的簡化方法,以及電壓矢量作用時間的求取方法;分析了電流滯環控制策略,推導出開關頻率與滯環帶寬以及整流器輸入電感之間的關系;應用瞬時功率理論分析pwm整流器功率控制原理,通過虛擬磁鏈估計有功功率和無功功率,用matlab實現了直接功率控制,並驗證了該控制方法的正確性。
  2. The pistol electric drill direct current stepless speed regulation switch automated test system based on the hypothesized instrument technology

    基於虛擬儀器技術的直流無級調速開關測試系統
  3. Railway fixed equipment. inner disconnectors and switch disconnectors for 750, 1500 et 3000 volt direct current tractions systems. characteristics and tests

    鐵路固定設備.電壓為750 1500和300v直流電牽引裝置用內部斷路分斷開關和分斷開關.性能和試驗
  4. Railway fixed equipment. outer switch disconnectors for 750, 1500 and 3000 v direct current tractions systems. characteristics and tests

    鐵路固定設備.開關. 750v 1500v和3000v直流驅動系統用外分段開關
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