Harmonic content

Harmonic content has become an important symbol of power quality.

谐波含量已经成为衡量电能质量的重要参数，对供电系统中的谐波检测具有重要的意义。

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.

介绍一种新型H桥级联静止同步补偿器(static synchronous compensator,STATCOM)的拓扑结构,它由传统的12脉冲变换器和一个H桥链构成,结合了多电平、软开关和注入技术,降低了交流侧电压谐波含量,解决了串联开关动态电压平衡的问题。

But it can not eliminate the harmonic content completely.

滞环控制方法具有动态响应速度快和精度较高的优点,该方法获得了广泛的应用和发展,但并不能完全消除谐波含量,针对这一问题,提出一种改进的滞环控制方法,从而改善系统的输入电流谐波总畸变率THD,有效的减少谐波含量。

Current of N bridge is large and total harmonic distortion of the output voltage is big when load is unbalance.

对无中线电感的基于开关点预置四桥臂三相逆变器进行仿真研究,发现N桥臂在不平衡负载时流过很大的电流,且输出电压波形总谐波含量大,因此,提出在主电路中引入中线电感。

harmonic content of an a.c.power supply

交流电源的谐波含量

Using the method of firing angle prediction, steady sinusoidal output voltage with low harmonic level can be generated.

通过开关角预置方法，叠加出谐波含量低的稳压正弦波输出。

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.

按我国公用电网谐波含量限制，研究了交流采样频率对各谐波功率测量的影响。

Analysis of Harmonics over Normal Reason and Study on Power Energy Metering within Harmonics;

谐波超标原因分析及含谐波的电能计量问题研究

Exact Wavefunctions of the Time and Square Velocity Dependent Damped Harmonic Oscillator after Quantization;

含速度平方阻尼变频谐振子的量子化波函数

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

质量和频率均含时的耦合谐振子的严格波函数

Lycopene and β-Carotene Content in Tomato Analyzed by the Second Harmonic

利用二次谐波在体分析番茄中的番茄红素和β-胡萝卜素含量

The Harmonic Characteristic Study of Wind Farm Containing Doubly-fed Wind Generator

含双馈风力发电机的风电场谐波分析

Measurement of Interharmonics in Power Systems Based on Wavelet Transform;

基于小波算法的电力系统间谐波测量

Using GPR to Measure Soil Moisture Content

利用低频微波波段GPR测量土壤含水量

The Realization of Real-Time Measurement System for the Resonant Frequency of Microwave Cavity

微波谐振腔谐振频率实时测量系统的实现

An Adaptive Harmonic Detection Method Based on Integrated Mean Value

含有积分均值环节的自适应谐波电流检测法

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

GB/T14549-1993电能质量公用电网谐波

Using 8 Bit SCP to Measure Power Harmonics on Line

用8位单片机实现电力谐波在线测量

The Measurement of Harmonic Current in HVDC;

高压直流输电系统（HVDC）中的谐波测量

Harmonic Detecting and Measurement of Electric Power Based on DSP;

基于DSP电网谐波检测与计量研究

The Application of SVR in the Field of Harmonic Measurement;

SVR在电力谐波测量中的应用研究

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

供电系统谐波对电能计量影响的研究