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- generalized harmonics currents 广义谐波电流
- The converter units generate harmonics which flow in the AC and DC lines. 换流器单元产生的谐波会流过交流和直流线路。
- Especially in electrical railway, because of tractor locomotives' to and fro and particularity of electrical load, it is always hard to superpose multi-tractors' harmonics currents. 具体到电气化铁路运输方面,由于牵引机车的往复和电气负荷的特殊性,对多机车负荷系统谐波电流的叠加一直是一个难以确定的课题。大量的专家和学者在这方面做出了长期的努力。
- A better tradeoff betw een the harmonics current detecting precision and dyn amic response of the instantaneous dectecting method ca n be achieved by carefully choosing the parameter of the low -pass fil-ter. 适当选择低通滤波器的参数,可以使谐波电流的检测既有较高的精度,又有较快的动态响应特性。
- WANG Zhi-hong,ZHENG Yu-ping,HE Jia-li.Calculating the ratio of the harmonics current to recognize the CT's saturation in numeric busbar protection [J].Proceedings of the EPSA,2000 ,12( 5 ) : 19-24. [2]王志鸿;郑玉平;贺家李.;通过计算谐波比确定母线保护中电流互感器的饱和[J]
- The modulation of the R6 in conjunction with the use of a commutation choke generates harmonics. R6的调制是结合交换阻气门产生和谐波完成的。
- The computation of harmonics superposition becomes more complicated when harmonic currents are caused by multi-harmonic sources at random phase angel. 大量的非线性负荷应用在农村配电网中,在农网中出现了多谐波源的现象。
- The generalized harmonic wavelet can analyze signals in random frequency band, and ensure the frequency resolution unchangingly by a generalized harmonic wavelet transformation. 摘要将二进谐波小波推广到广义谐波小波后,能够对信号的任意频段进行分析,且能够保证信号经过广义谐波小波变换后其频率分辨率保持不变。
- 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。
- The character of active power filter and means of harmonic currents detecrion are introduced. 摘要介绍有源电力滤波器的工作原理以及谐波检测的方法。
- The Eelctromagnetic Field and Power Density Vectors on Spheres in Near to Far Field from Time Harmonic Currents. 弦变电流源在近场至远场球面上之向量电磁场及向量功率密度。
- The first is a limitation in the harmonic current that a user can transmit into the utility system. 第一个准则是限制用户可送入用电系统的谐波电流。
- In the widely used detecting approach of harmonic currents for APF,ip-iq approach based on theory of instantaneous reactive power is used most widely. 在众多有源滤波器的谐波及无功电流检测算法中,基于三相瞬时无功功率理论的应用最为广泛。
- Keywords :shunt active power filter, harmonic current, iterative learning controller (ILC), nonlinear load. 关键词: 并联式有源滤波器;谐波电流;迭代学习控制;
- ZHOU Fangyuan,LUO Deling,TANG Zhaohui.Study on a new detecting harmonic currents in single phase circuit.Electrotechnical Application,2006,25(4):73-75. [2]周方圆;罗德凌;唐朝晖.;单相电路谐波电流实时检测的新方法研究
- In HVDC system, It is meaningful to search for a new way to mearsure the harmonic current. 在高压直流输电系统中,研究运用新的测量谐波电流的方法和技术有着重要的意义。
- The parallel APF compensates the remained harmonic current and fundamental current losses. 进入电网的残余谐波电流以及由于参数波动引起的基波电流损失由并联型APF补偿。
- General harmonic wavelet is an ideal band-pass filter,due to selecting frequency range discretionarily. 广义谐波小波可任意选取频带,是理想的带通滤波器。
- Use of this drug is now fairly generalized. 这种药现在用得相当普遍。
- At present, most of the compensation principles of APF are that the compensation currents track the detected reference harmonic currents. 目前,并联有源电力滤波器的补偿原理大多是补偿电流跟踪检测出的参考谐波电流。