本文關鍵詞：基于新型相位幅值控制的三相PWM整流器數(shù)學模型，由筆耕文化傳播整理發(fā)布。

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電力工業(yè)

新型相位

     A new phase and amplitude control scheme is put forward by using a rectifier front voltage lag angle ξas control variable.

     提出以整流器前端電壓滯后角ξ為控制變量的新型相位幅值控制方案。

短句來源

     Analysis of Bi-direction Operation State of Three Phase PWM Rectifier Based on a New Phase and Amplitude Control

     基于新型相位幅值控制的三相PWM整流器雙向工作狀態(tài)分析

短句來源

     In the paper, the old phase and amplitude control is improved. A new phase and amplitude control strategy is presented and applied in practice in the dissertation with the content of the front end voltage of rectifier' s lag angle was selected as the control variable after modifying the tradition.

     對傳統(tǒng)的相位幅值控制策略進行改進,提出采用以整流器前端電壓滯后角為控制變量的一種新型相位幅值控制方案。

短句來源

     A NEW PHASE AND AMPLITUDE CONTROL STRATEGY AND MATHMATICS MODEL OF THREE-PHASE VOLTAGE RECTIFIER

     三相PWM整流器新型相位幅值控制數(shù)學模型及其控制策略

短句來源

     New Phase Detector with Fast Response and Without Ripple

     具有快速響應和無紋波輸出的新型相位檢測器

短句來源

更多       

     The Study of the New Measure System for Phase Noise Spectrum

     新型相位噪聲譜測量系統(tǒng)研究

短句來源

     In this paper we propose a novel kind of phase spreading sequence (PSS) for direct sequence spread spectrum multiple access (DS/SSMA) with continuous phase modulation (CPM),and the optimal design criterion of PSS is obtained.

     本文提出了一種基于連續(xù)相位調制 (CPM)并用于直接序列擴頻多址 (DS/SSMA)的新型相位擴譜序列(PSS) ,以及它的最佳設計準則 .

短句來源

     An new idea of indirect current control system of three-phase PWM rectifier based on DSP is presented in this paper, and a new phase- amplitude control method is proposed. The lag angle is regarded as the input variable.

     介紹了一種由數(shù)字信號處理器(DSP)控制的三相PWM 整流器的新型間接電流控制系統(tǒng),提出了新型相位幅值控制方法,以滯后角作為輸入變量。

短句來源

     MATHEMATICAL MODEL OF THREE-PHASE PWM RECTIFIER BASED ON A NOVEL PHASE AND AMPLITUDE CONTROL

     基于新型相位幅值控制的三相PWM整流器數(shù)學模型

短句來源

     This paper presents a new idea of indirect current control system of three-phase PWM rectifier based on DSP. A new phase-amplitude control method is proposed. The lag angle ξ is regarded as the input variable.

     介紹了一種由DSP控制的三相PWM整流器的新型間接電流控制系統(tǒng) ,提出了新型相位幅值控制方法 ,以滯后角 ξ作為輸入變量。

短句來源

更多       

     A New Interferometer Using Phase Conjugate Mirror

     利用相位共軛波的新型干涉儀

短句來源

     A novel digital phase meter

     一種新型的數(shù)字式相位表

短句來源

     New Type of Colour Filter

     新型濾色器

短句來源

     SOME NEW TYPES OF SUPERCONDUCTING MATERIALS

     新型超導材料

短句來源

     Phase Analysis

     相位分析

短句來源

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  new phase

A solution to this system allows one to find the surface tension of new phase nucleus of any size (including minimal) and any sign of surface curvature.

The calculation of the formation work of a new phase with account of both the thermodynamic parameters and stress state makes it possible to estimate the probability of the formation of precipitates on grain boundaries depending on their orientation.

The calculation of the formation work of a new phase with account of both the thermodynamic parameters and stress state makes it possible to estimate the probability of the formation of precipitates on grain boundaries depending on their orientation.

At a molar nonionic surfactant/protein ratio in the range of 6-10, the additional binding of Tween 80 molecules by the particles of the new phase due to hydrophobic interactions is observed.

Allowance is made for the influence of surface tension, which plays a critical part in the formation of nucleating centers of a new phase [2].

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The characteristics of TFM signal are determined by its phase function. A new phase function which meets the requirments of TFM and makes the recovery of carrier and clock easier is presented in this paper. Then, the performance of TFM system using a multi-level decision method following a frequency discriminator is analysed. Finally, according to the properties of TFM signal, a new timing circuit is proposed.

TFM信號完全由其相位函數(shù)確定。本文提出了一種滿足TFM要求且有利于載波提取和定時恢復的新型相位函數(shù),使所產生信號的帶外輻射可改善10dB。接著,模擬分析了TFM系統(tǒng)采用限幅鑒頻加多電平檢測時的性能。最后,提出了一種位定時提取電路。

An observation of optical conjugation in azo-dye-doped liquid crystals cell is reported for the first time. Its response time, diffraction efficienty and threshold intensity were measured, and the resolution was analysed. It is shown that it's a novel promising phase connjugate device.

首次報道了摻偶氮染料液晶盤中相位共軛輸出的現(xiàn)象．測量了它的響應時間、衍射效率和閾值功率．討論了該器件的分辨率．實驗表明：它具有ｍｓ級的響應時間和ｍＷ級的閾值功率，是一種有前途的新型相位共軛器件．

An improved method involving three optical phase conjugators for measuring the phase of complex third-order nonlinear susceptibility (χ(3) ) directly has been developed. The χ(3)'s phases of two saturable absorption dye-doped polymers, i. e.,Eosin Y/polyvinyl alcohol (Eo/PVA ) and Erythrosin B/polyvinyl acohol (Er/PVA)have been measured by using this method. We found that their χ(3)'s phases originating from saturable absorption effect has a tendency approaching to - π from -π/2 as the wavelength used goes far...

An improved method involving three optical phase conjugators for measuring the phase of complex third-order nonlinear susceptibility (χ(3) ) directly has been developed. The χ(3)'s phases of two saturable absorption dye-doped polymers, i. e.,Eosin Y/polyvinyl alcohol (Eo/PVA ) and Erythrosin B/polyvinyl acohol (Er/PVA)have been measured by using this method. We found that their χ(3)'s phases originating from saturable absorption effect has a tendency approaching to - π from -π/2 as the wavelength used goes far away from the absorption peak. Otherwise, χ(3)'s phase originating from dye-bleached effect was about-17/18π.

發(fā)展了一種新型相位共軛干涉法可用于簡單方便地測定介質三次非線性極化率（χ（３））的相位。文中用這種方法研究了二種染料摻雜高分子膜χ（３）的相位，，發(fā)現(xiàn)由飽和吸收效應產生的χ（３）的相位，當波長遠離吸收峰時，由─π／２趨于─π，而由光到漂白效應產生的χ（３）的相位都落在─１７／１８π附近。

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  本文關鍵詞：基于新型相位幅值控制的三相PWM整流器數(shù)學模型，由筆耕文化傳播整理發(fā)布。