相電壓 的英文怎麼說
中文拼音 [xiāngdiànyā]
相電壓
英文
phase voltage; star voltage-
Monitor apparatus can measure valid value of three phase voltage and current, power factor, three phase disequilibrium, instant flecker of short time and harmonic without twenty, degree and harmonic distortion total. the paper are laid on the following. ( 1 ) master plan and function of circuit, ( 2 ) hardware design including circuit and principle of a / d conversion, phase lock, liquid crystal display and keystroke and so on, ( 3 ) design of system software including digital filtering, fft, a / d conversion and monitor interface of pc, ( 4 ) system test
監測儀能夠完成包括三相電壓、三相電流的有效值、功率因數、三相不平衡、電壓短期閃變、以及20次內的諧波、諧波相位、諧波失真總量等的測量。論文重點介紹了以下幾部分: ( 1 )電路的總體設計和功能; ( 2 )硬體設計,包括a d轉換、鎖相環、液晶顯示和按鍵輸入等原理和電路。 ( 3 )系統軟體設計,包括a d轉換、 fft 、數字濾波等程序的原理和演算法以及上位機監控界面的設計; ( 4 )系統測試。Intelligent electricity quantity concentration display instrument is a kind of intelligent instrument used to measure combined parameter of ac electricity quantity, which can simultaneously measure each phase electricity parameter in the tri - phase ac loop such as voltage, current, active power, reactive power, apparent power, power factor, frequency, active kilowatt hour, reactive kilovolt ampere - hour and so on
智能電量集中顯示儀是一種用於交流電量綜合參數測量的智能儀表,它可以同時測量三相交流迴路的每一相電壓電流有功功率無功功率視在功率功率因數頻率有功電度無功電度等參數。The principle and application of jszg anti - ferro resonance triphase voltage transformer
抗鐵磁諧振三相電壓互感器的原理和使用The ideal power system needs to be supplied with sine voltage whose frequency and amplitude are both stable. to three - phase ac power system, the currents and voltages must be equal of amplitude and the phase - shift between each other should be 120 of positive order
理想的電力系統要求以頻率和幅值穩定的正弦電壓進行供電;對於三相交流電力系統,各相電壓和電流應處于幅值大小相等、相位互差120的正序對稱狀態。Voltage phase - balance protection
相電壓平衡保In - phase voltage
同相電壓A - phase voltage
A相電壓C - phase voltage
C相電壓B - phase voltage
B相電壓Moreover, an improved method is proposed for the phase current reconfiguration on the basis of the direct current circuit
提出了一種改進的基於直流迴路母線電流的相電流、相電壓重構方法。Through auto transformation from die bearable phase voltage to a half of the line voltage, the excellent illumination energy conservation mode can be achieved
通過對照明燈具從承受相電壓至承受線電壓一半的自動轉換,實現最優照明節電模式。Line - to - neutral voltage in a 3 - phase, 4 - wire, y - connected generator, line - to - neutral voltage is the voltage between a phase and the common neutral where the three phases are tied together
相電壓在三相四線星形連接的發電機中,相電壓是指三相連接點與每相之間的電壓。Based on classical phase voltage model, a line voltage model is derived and then the phase current model is obtained. beside, the solution for this novel mathematical model is also given
本文基於經典的相電壓模型,導出線電壓模型,然後推出相電流模型,並給出相電流模型解的表達式。The speed - independent position function of the rotor was given by analyzing the phase current and phase voltage of the permenent magnet brushless dc motor, using the powerful operation function of dsp
利用dsp的強大運算功能,通過分析永磁無刷直流電動機的相電壓與相電流給出轉子速度無關位置函數。Because central potentials of four y windings in 12 - phase generator are not equal each other and there is no common reference inside the generator, it is difficult to identify the on / off of rectifying elements. in this paper, by using a mathematical model with line voltage substitute for phase voltage, the problem that there is no common reference in the 12 - phase generator with rectifier is solved. based on results of the studies on small prototype, 920kw charging generator applied in a submarine is improved in design, and therefore power oscillation with high magnitude when two generators are operating in parallel
由於十二相發電機中四個y繞組的中點電位不等,電機內部沒有公共參考點,從而在判斷整流元件導通時,不能象三相同步發電機整流系統那樣認為陽極電位最高或陰極電位最低的整流元件導通,本文採用了以線電壓代替相電壓建立十二相整流發電機的數學模型,從而解決了十二相發電機無公共參考點的問題。In the synchronous " model, based on the idea of polygonal flux linkage locus, by means of constructing the switch state period table of three phrase voltage inverter is required. in the brushless model, the igbt ( isolated gate bipolar transistor ) switch state period table is gained by gal ( generic array logic ) which analyzes the signal of position feed - back
在同步方式下,基於多邊形磁鏈軌跡法的思想,用作圖法求得三相電壓型逆變器的pwm波形序列;在無刷直流方式下,用gal對位置反饋信號進行邏輯綜合,得到開關管的導通規律。Then one of the methods of rotor position detection - bemf zero crossing point detection is explained in detail. in succession, the chapter dissertates the method of measuring phase voltage and supply voltage, and analyses the error of rotor position using this method
對轉子位置檢測方法中的反電勢過零點法作了比較詳細的介紹,討論了反電勢法中相電壓和端電壓的檢測方法,並分析了利用該方法時而產生的轉子位置檢測誤差。Through theoretic reckoning and simulating analyzing, several control strategies for shunt apf were compared and chose ip - iq arithmetic of the instantaneous reactive power theory control strategy as the right scheme to produce the instructing current. based on it, some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage. two topologies of main circuit were compared and chose the three - phase voltage - source converter with a split - capacitor as its main circuit structure
通過理論計算和模擬分析,比較了並聯型apf的幾種控制策略的優點和缺點,從中選擇瞬時無功理論控制策略i _ p - i _ q計算方式為指令電流產生的演算法,並在此基礎上增加了抑制系統諧振和平衡直流側電容電壓的控制;比較了並聯型apf主電路的兩種常見形式,從中選擇了三相電壓型變流器的主電路形式;算出適合該apf的直流側電容和出線電感的參數;設計出能有效消除apf產生的高次諧波的高通濾波器。Switching losses analysis indicates that the switching losses can be extremely reduced with different load qualities by choosing proper phase - voltage modulation method. the method of minimum switching losses svm is investigated. the modulation functions of a quasi - optimum method and a two - phase modulation method are given
本文深入研究了一種基於電壓空間矢量的最小開關損耗pwm技術,給出了準優化方法和二相優化方法的相電壓調制函數,並在理論分析的基礎上,通過模擬實驗,對兩種減少開關損耗的方法和調制與過調制進行了分析。Abstract : the phenomenon of light and heavy steps in 5 - phase hybrid stepping motors is investigated. focusing on the relationships between phase - current and phase - voltage caused by different switching modes, a proposal to improve the light and heavy steps under3 - 4 phase mode is presented and the well - agreed experimental results are given
文摘:研究了五相混合式步進電動機4 5相通電運行時的輕重步現象,通過分析不同通電方式時導通與截止相的相電壓變化對相電流的影響,闡明了3 4相通電方式可以改善電機輕重步現象的機理,並進行了實驗驗證。分享友人