应用了信号重构理论，极大增强了功率谐波源的谐波合成能力。
To buildup harmonic construction ability, we apply signal reconstruction theory in design.
谐波治理及功率因素补偿如何综合考虑？
How to consider harmonic suppression and power factor compensation comprehensively?
该文提出了基于瞬时无功功率理论的四相输电谐波电流检测方法。
This paper presents four-phase transmission harmonic current detecting method based on instantaneous reactive power theory.
第一部分讨论各种谐波问题，如使供电电压畸变，降低功率因数，增加能量损耗，干扰通讯系统等。
The harmonic problems, such as distorting supply voltage, decreasing power factor, increasing energy loss, interfering with communication systems etc. are discussed in the part one.
本文中将倍频晶体分割成无数多个小倍频单元，并导出每个倍频单元中的谐波功率与倍频效率。
In this paper, we divided the double frequency crystal into numerous small double frequency units and derived the harmonic power and the double frequency efficiency in each unit.
晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
Speed regulation system using cascade control method with thyristor is a low-cost system, but the classic system has some shortages, such as low power factor, serious harmonic pollution and etc.
本文提出了大功率整流装置产生的谐波防治措施。
The methods of harmonics suppression for high-power rectifier devices are proposed .
最后，良好的仿真结果表明本文设计的各种有源电力滤波器能有效地补偿系统中的谐波和无功功率，且具有良好的动态性能。
Finally, good simulation results illustrate that various active power filters are designed in the text can compensate harmonic and reactive power of the system, have good dynamic performance.
通过电路分析对电子镇流器存在的电源电流谐波高和功率因数低等问题。
In this paper has analysed high levels of harmonic currents and low Power factor of electronic ballast by circuit study.
该控制方法能改善系统电能质量的调节，有效地补偿负荷侧谐波电流、无功功率和负序电流。
This control principle can improve the control of power quality and effectively compensate the harmonic currents at load side, reactive power and negative sequence current.
本文针对三段桥连续调压方式的6K机车功率因数和谐波电流进行了理论分析和计算。
Regarding 6k locomotive with triple bridge continuous voltage regulation, theoretical analysis and calculation are conducted upon its power factor and harmonic current.
晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
Thyristor cascade control system is a low-cost system, but the traditional cascade control system has some shortages, such as a low power factor, serious harmonic pollution etc.
介绍了谐波功率测量的数字信号处理算法以及一种基于DSP技术的多功能电参量测量仪的系统设计。
This paper introduces the electric parameter metering system based on digital signal processor (DSP) and a digital signal processing algorithm for the harmonic power measurement.
对电力电子系统的无功功率与谐波抑制方法进行分析。
The article analyzes reactive power compensation and harmonic restraining in power electronic system.
有源功率因数校正满足EMC的谐波电流的排放限制，以及满足电压波动和闪变的限制。
Active Power Factor Correction to meet EMC limits for harmonic current emissions, and limitations of voltage fluctuations and flicker.
总之，无功功率的补偿和谐波电流的抑制已经成为港口电气系统设计中最重要的问题之一。
In a word, reactive power compensation and harmonic current restrain have become one of the most important problems.
因此，合理设计滤波器，可使牵引变电站的功率因数及谐波同时满足要求。
Hence, a filter could be designed to increase power factor of traction substation and decrease the harmonic currents.
用计算机程序来分析功率系统的谐波，可以计算出给定谐波源和网络结构的电压畸变量。
Computer programs, which are used to analyze harmonics in a power system, will calculate the voltage distortion for given harmonic sources and a network configuration.
介绍了瞬时无功功率理论在谐波和无功电流实时检测方面的应用。
Instantaneous reactive power theory applied on harmonic and reactive current real-time detection is presented in this paper.
实验结果表明，该系统具有输出功率因数高，对电网谐波污染小等优点。
The experiment results indicate the system has the characteristics of high power factor and low harmonic current.
介绍了一种采用无源功率因数校正方法降低电源谐波含量的方案。
A proposal using passive power factor correction method to reduce harmonics emission is introduced in this paper.
取样物理量为无功功率，具有谐波测量及保护功能。
Sampling physical parameter is inactive power which has functions of harmonic measurement and protection.
最后对目前常用的无功功率和谐波的静态和动态补偿装置进行了分析对比。
Finally, the static and dynamic compensator for reactive power and harmonic are analyzed and compared.
谐波功率的计量能力直接决定着电表的精度等级。
The accuracy grade of electric meters directly depends on the metering capability on harmonic power.
基于瞬时无功功率理论建立了谐波及无功电流检测系统闭环、开环的统一模型。
A unified model for harmonics and reactive current closed-loop or open-loop detection was established based on instantaneous reactive power theory.
由于存在无功功率和谐波，从而引起电网质量下降，传统的接触器投切补偿电容器存在诸多不足之处。
Reactive power and harmonic can decrease power network quality and traditional compensators with contactor switch have some drawbacks.
导出了基波电磁功率、稳定谐波电磁功率及脉动谐波电磁功率的计算公式。
Then, the calculation formulas of the fundamental and steady harmonic as well as pulse harmonic electromagnetic powers are derived.
基于电压源逆变器（V S I）的静止无功发生器（SVG）直接应用PWM控制技术，具有结构紧凑、易于控制、谐波含量小以及功率密度大等优点。
VSI-based SVG using PWM technology has some advantages such as compact structure, simple control, little harmonics and high power density.
基于电压源逆变器（V S I）的静止无功发生器（SVG）直接应用PWM控制技术，具有结构紧凑、易于控制、谐波含量小以及功率密度大等优点。
VSI-based SVG using PWM technology has some advantages such as compact structure, simple control, little harmonics and high power density.
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