Power supplies connected to AC mains introduce harmonic currents in the utility.
电源供应器连接到交流电源引入谐波电流的效用。
The method can be also used for detecting harmonic currents of other non-linear loads.
该方法也可用于一般非线性负载的谐波电流检测。
One key problem with APF application is how to accurately calculate harmonic currents for compensation.
有源滤波器的应用中要求补偿电流的指令值计算要准确。
Hence, a filter could be designed to increase power factor of traction substation and decrease the harmonic currents.
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。
In this paper has analysed high levels of harmonic currents and low Power factor of electronic ballast by circuit study.
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。
Harmonic load model is established by transforming the harmonic currents from two-phase at LV side to three-phase at HV side.
将谐波电流从低压侧的两相转换到高压侧的三相，建立谐波负荷模型。
The Variation of Radiated EM Intensity and Power Density on Spheres in Near and Far Field from Array of Time Harmonic Currents.
弦变线电流源之辐射电磁场强及功率密度在近场至远场球面上之变化。
In an electrical network, unbalanced and harmonic currents generated by nonlinear and unbalanced loads can cause harmonics and unbalanced voltage.
电网中，由非线性和不平衡负载引起的不平衡和谐波电流将造成谐波和不平衡电压。
With adaptive ability, harmonic current detecting approach, based on ANN, can accurately and real-timely detect harmonic currents for power network.
基于人工神经元自适应的谐波电流检测方法，能够准确、实时地检测电网中的谐波，且有一定的自适应能力。
One approach to minimize this impact is to filter the harmonic currents and the electromagnetic interference(EMI) produced by the power electronic loads.
减小这种影响的一个办法是，将由电力电子负载产生的谐波电流或者电磁干扰滤除。
The basis of determining the limits of harmonic currents for various sorts of equipments, their basic principles and derivations are explained in detail.
文章详细说明了各类设备谐波电流限值制定依据和基本原理以及推导过程。
It is considered as an effective way to solve the problem by compensating the harmonic currents based on the tracing and predicting of the harmonic currents.
对谐波电流进行准确的跟踪和预测，然后根据预测值进行补偿是解决这一问题的有效方法。
HRPHC has the advantages of both APF and RPC, which are higher accuracy and larger capacity and being able to compensate reactive and harmonic currents smoothly.
HRPHC具有有源电力滤波器(APF)和无源电力滤波器(PF)两者的优点，有补偿速度快、精度高、容量大的特点。
Analysis and simulation results show that different harmonic currents flowing into the capacitor circuit is different due to different reactance ratio of series reactor.
分析与计算结果表明，因串联电抗器的电抗率不同，其流进电容器回路的谐波电流也截然不同。
Based on some documents, the current HCDM (harmonic currents detection methods) and CS (control strategies) are compared, their advantages and disadvantages are analyzed.
根据相关文献，归纳总结了目前出现的谐波检测和系统控制的各种方法。
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.
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。
Power factor correction technology is an effective method of restraining harmonic currents and increasing power factor, which has been attended more and more in recent years.
功率因数校正技术是抑制谐波电流、提高功率因数的行之有效的方法，近年来受到了越来越多的关注。
These may be required where harmonic currents caused by the thyristor phase control of the reactor current must be filtered to prevent unacceptable transmission bus voltage distortion.
这里须滤去由电抗器相位控制引起的谐波电流以避免不能接受的输电母线电压畸变。
The interaction of harmonic currents caused by switching ac filters of inverter stations in the multi-infeed DC system of China Southern Power Grid in the year of 2008 is mainly researched.
该方法主要研究南方电网2008年多馈入直流系统各个逆变站由于滤波器投切产生的谐波电流的交互影响。
The results also indicate that when special filters are connected to secondary three-phase system, the primary harmonic currents decrease by about 28% than by using conventional two-phase filters.
结果还表明，当在二次侧三相系统接入文中提出的特殊滤波器时，谐波电流比用常规两相滤波器降低约28%。
The results of simulation verify this scheme is effective, and in this scheme APF can compensate harmonic and reactive currents with the distorted source voltages flexibly.
通过仿真验证了在电网电压存在畸变时，有源电力滤波器的补偿效果良好，且可以根据对谐波和无功电流灵活补偿。
This paper based on the orthogonality of sine, presents an approach to the detection of harmonic and reactive currents suitable for single-phase circuits.
根据正弦函数的正交特性，提出了一种单相电路的谐波和无功电流检测方法。
It can detect not only any current component in the distorted current, but also the sum of harmonic and reactive currents.
既能单独检测出畸变电流中的任意电流分量，又能获得谐波和无功电流之和。
A new approach to real time detection of harmonic and reactive currents for single-phase circuit was proposed.
提出了一种新的单相电路的谐波和无功电流实时检测方法。
The harmonic compensation currents proportional to the harmonic current in the primary winding, which is detected real-timely, are injected to the multiple secondary winding of the transformer.
实时检测变压器原方绕组的谐波电流，通过逆变器产生与原方绕组谐波电流成比例的谐波补偿电流注入变压器副方多补偿绕组中。
When the distorted currents exist in power system, it will result in distorted voltages and bring on the problem of harmonic pollution.
当扭曲存在电流在电力系统中，这将导致扭曲的电压，带来的问题，谐波污染。
When the distorted currents exist in power system, it will result in distorted voltages and bring on the problem of harmonic pollution.
当扭曲存在电流在电力系统中，这将导致扭曲的电压，带来的问题，谐波污染。
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