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)，對供電系統(tǒng)中的諧波檢測具有重要的意義。
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橋級聯(lián)靜止同步補償器(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H橋鏈構(gòu)成,結(jié)合了多電平、軟開關(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)開關(guān)動態(tài)電壓平衡的問題。
But it can not eliminate the harmonic content completely.
滯環(huán)控制方法具有動態(tài)響應(yīng)速度快和精度較高的優(yōu)點,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,針對這一問題,提出一種改進的滯環(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.
對無中線電感的基于開關(guān)點預(yù)置四橋臂三相逆變器進行仿真研究,發(fā)現(xiàn)N橋臂在不平衡負(fù)載時流過很大的電流,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.
通過開關(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.
按我國公用電網(wǎng)諧波含量限制，研究了交流采樣頻率對各諧波功率測量的影響。
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量問題研究
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)電機的風(fēng)電場諧波分析
Measurement of Interharmonics in Power Systems Based on Wavelet Transform;
基于小波算法的電力系統(tǒng)間諧波測量
Using GPR to Measure Soil Moisture Content
利用低頻微波波段GPR測量土壤含水量
The Realization of Real-Time Measurement System for the Resonant Frequency of Microwave Cavity
微波諧振腔諧振頻率實時測量系統(tǒng)的實現(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位單片機實現(xiàn)電力諧波在線測量
The Measurement of Harmonic Current in HVDC;
高壓直流輸電系統(tǒng)（HVDC）中的諧波測量
Harmonic Detecting and Measurement of Electric Power Based on DSP;
基于DSP電網(wǎng)諧波檢測與計量研究
The Application of SVR in the Field of Harmonic Measurement;
SVR在電力諧波測量中的應(yīng)用研究
Research on the Effect of Power Supply System Harmonic on the Electrical Energy Measurement;
供電系統(tǒng)諧波對電能計量影響的研究