variable phase output 中文意思是什麼
variable phase output
解釋
可變相位的輸出信號-
In chapter four, according to the analysis on the boundary theory and velocity field of main fluid zone of two - phase fluid pumps, the parameter equations of vane ' s modular curve of centrifugal pump are given, which contact the boundary " layer and eular theory of two - phase fluid pump by the fixing angel of vane as variable and leading into the velocity coefficient a. the results show that, in designing process of vane ' s modular curve of centrifugal pump, the determination of the total shape and parameters relates the flow properties of two - phase fluid and output ability of pump, or the design of the modular curve of centrifugal pump is the kernel of hydraulic design
第四章依據固液兩相流泵的邊界層理論及對主流區速度場的分析，給出了離心泵葉片型線的參數方程；它是以葉片安裝角為參變數，以引入的速度系數k _ v作為中間因子，將兩相流泵的邊界層理論和歐拉理論聯系起來? ?它說明了這樣一個事實，在離心泵葉片型線的設計過程中，它的整個形態或參數的確定都關繫到兩相流體的流動特性和泵的輸出能力，或者說，離心泵型線的設計是其水力設計的核心。 -
Through analyzing and researching the problem of variable frequency to working frequency of high - power electromotor in theory, the key of conversion is pointed out in the paper. on the basis of analyzing equivalent circuit diagram and vector - diagram of induction - motor, the phase of working frequency power whether or not consistent with the output phase of variable frequency power at the moment of conversion is the key to decide whether the conversion is successfully
本論文針對大功率電機變頻轉工頻轉換存在的問題在理論上作深入細致的研究，根據感應電動機的等效電路和相量圖分析，指出大功率電機變頻轉工頻能否成功，關鍵在於變頻轉工頻瞬時，工頻電源和變頻輸出電源是否相位一致。 -
Aiming at the features of grid - connected pv system, a kind of grid - connected control strategy is presented, which is based on the multi - variable double - loop control and synchronization phase - locked control. the multi - variable double - loop control is used for the real - time tracking, and the inherent principle error existing in the single - loop control is eliminated. the synchronization phase - locked control makes the frequency and phase of output current equal to those of utility voltage
針對光伏並網的特點，本文提出了一種基於多變量雙環控制與同步鎖相控制的並網控制策略，多變量雙環控制用於電流的實時跟蹤，解決了只採用單環控制存在的原理性誤差問題；同步鎖相控制則保證輸出電流與電網電壓同頻和同相。 -
The design of on - line three - phase input and output variable frequency uninterruptable power supply
在線式三進三出交流變頻不間斷電源的設計 -
With the application of phase detector in industrial experiment on the spot, when the phase of working frequency power supply is consistent with the output phase of variable frequency power supply, plc sends out the instruction to switch off the output of transducer. the electromotor is connected with the industrial frequency voltage after it was disconnected from the out
在現場工業試驗引入鑒頻鑒相控制器，在工頻電源和變頻輸出電源相位一致時， plc發出指令切斷變頻器輸出，電機從變頻器輸出端斷開后，馬上接入工頻電源，轉換時間控制在幾十毫秒之內。
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