Harmonic content

Harmonic content has become an important symbol of power quality.

諧波含量已經成為衡量電能質量的重要參數，對供電系統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橋級聯靜止同步補償器(static synchronous compensator,STATCOM)的拓撲結構,它由傳統的12脈沖變換器和一個H橋鏈構成,結合了多電平、軟開關和注入技術,降低了交流側電壓諧波含量,解決了串聯開關動態電壓平衡的問題。

But it can not eliminate the harmonic content completely.

滯環控制方法具有動態響應速度快和精度較高的優點,該方法獲得了廣泛的應用和發展,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控制方法,從而改善系統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點預置四橋臂三相逆變器進行仿真研究,發現N橋臂在不平衡負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.

通過開關角預置方法，疊加出諧波含量低的穩壓正弦波輸出。

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

Exact wave function of the coupled harmonic oscillator with time-dependent mass and frequency

質量和頻率均含時的耦合諧振子的嚴格波函數

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

含雙饋風力發電機的風電場諧波分析

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的實現

An Adaptive Harmonic Detection Method Based on Integrated Mean Value

含有積分均值環節的自適應諧波電流檢測法

Quality of electric energy supply--Harmonics in public supply network

GB/T14549-1993電能質量公用電網諧波

Using 8 Bit SCP to Measure Power Harmonics on Line

用8位單片機實現電力諧波在線測量

The Measurement of Harmonic Current in HVDC;

高壓直流輸電系統（HVDC）中的諧波測量

Harmonic Detecting and Measurement of Electric Power Based on DSP;

基于DSP電網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用研究

Research on the Effect of Power Supply System Harmonic on the Electrical Energy Measurement;

供電系統諧波對電能計量影響的研究