Harmonic content has become an important symbol of power quality.
諧波含量已經(jīng)成為衡量電能質(zhì)量的重要參數(shù)，對(duì)供電系統(tǒng)中的諧波檢測(cè)具有重要的意義。
The purpose of designing such a topological structure, which integrates the concepts of multi-level, soft-switching and re-injection, is to reduce the voltage harmonic content at AC side and to solve dynamic voltage balance among the switches connected in series.
介紹一種新型H橋級(jí)聯(lián)靜止同步補(bǔ)償器(static synchronous compensator,STATCOM)的拓?fù)浣Y(jié)構(gòu),它由傳統(tǒng)的12脈沖變換器和一個(gè)H橋鏈構(gòu)成,結(jié)合了多電平、軟開(kāi)關(guān)和注入技術(shù),降低了交流側(cè)電壓諧波含量,解決了串聯(lián)開(kāi)關(guān)動(dòng)態(tài)電壓平衡的問(wèn)題。
But it can not eliminate the harmonic content completely.
滯環(huán)控制方法具有動(dòng)態(tài)響應(yīng)速度快和精度較高的優(yōu)點(diǎn),該方法獲得了廣泛的應(yīng)用和發(fā)展,但并不能完全消除諧波含量,針對(duì)這一問(wèn)題,提出一種改進(jìn)的滯環(huán)控制方法,從而改善系統(tǒng)的輸入電流諧波總畸變率THD,有效的減少諧波含量。
Current of N bridge is large and total harmonic distortion of the output voltage is big when load is unbalance.
對(duì)無(wú)中線電感的基于開(kāi)關(guān)點(diǎn)預(yù)置四橋臂三相逆變器進(jìn)行仿真研究,發(fā)現(xiàn)N橋臂在不平衡負(fù)載時(shí)流過(guò)很大的電流,且輸出電壓波形總諧波含量大,因此,提出在主電路中引入中線電感。
harmonic content of an a.c.power supply
交流電源的諧波含量
Using the method of firing angle prediction, steady sinusoidal output voltage with low harmonic level can be generated.
通過(guò)開(kāi)關(guān)角預(yù)置方法，疊加出諧波含量低的穩(wěn)壓正弦波輸出。
Based on the limitation of harmonics content in China's power systems, the influence of sampling frequency for alternating signals on measurement of harmonic power is discussed.
按我國(guó)公用電網(wǎng)諧波含量限制，研究了交流采樣頻率對(duì)各諧波功率測(cè)量的影響。
Analysis of Harmonics over Normal Reason and Study on Power Energy Metering within Harmonics;
諧波超標(biāo)原因分析及含諧波的電能計(jì)量問(wèn)題研究
Exact Wavefunctions of the Time and Square Velocity Dependent Damped Harmonic Oscillator after Quantization;
含速度平方阻尼變頻諧振子的量子化波函數(shù)
Exact wave function of the coupled harmonic oscillator with time-dependent mass and frequency
質(zhì)量和頻率均含時(shí)的耦合諧振子的嚴(yán)格波函數(shù)
Lycopene and β-Carotene Content in Tomato Analyzed by the Second Harmonic
利用二次諧波在體分析番茄中的番茄紅素和β-胡蘿卜素含量
The Harmonic Characteristic Study of Wind Farm Containing Doubly-fed Wind Generator
含雙饋風(fēng)力發(fā)電機(jī)的風(fēng)電場(chǎng)諧波分析
Measurement of Interharmonics in Power Systems Based on Wavelet Transform;
基于小波算法的電力系統(tǒng)間諧波測(cè)量
Using GPR to Measure Soil Moisture Content
利用低頻微波波段GPR測(cè)量土壤含水量
The Realization of Real-Time Measurement System for the Resonant Frequency of Microwave Cavity
微波諧振腔諧振頻率實(shí)時(shí)測(cè)量系統(tǒng)的實(shí)現(xiàn)
An Adaptive Harmonic Detection Method Based on Integrated Mean Value
含有積分均值環(huán)節(jié)的自適應(yīng)諧波電流檢測(cè)法
Quality of electric energy supply--Harmonics in public supply network
GB/T14549-1993電能質(zhì)量公用電網(wǎng)諧波
Using 8 Bit SCP to Measure Power Harmonics on Line
用8位單片機(jī)實(shí)現(xiàn)電力諧波在線測(cè)量
The Measurement of Harmonic Current in HVDC;
高壓直流輸電系統(tǒng)（HVDC）中的諧波測(cè)量
Harmonic Detecting and Measurement of Electric Power Based on DSP;
基于DSP電網(wǎng)諧波檢測(cè)與計(jì)量研究
The Application of SVR in the Field of Harmonic Measurement;
SVR在電力諧波測(cè)量中的應(yīng)用研究
Research on the Effect of Power Supply System Harmonic on the Electrical Energy Measurement;
供電系統(tǒng)諧波對(duì)電能計(jì)量影響的研究