2008 International School on Nonsinusoidal Currents and Compensation最新文献_第3页

Power electronics active filter with controlled dynamics 具有动态控制的电力电子有源滤波器

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627516

M. Gwóźdź

引用次数: 4

Influence of the nonlinearity of measurement transformers on effectiveness of module error correction 测量变压器非线性对模块误差校正效果的影响

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627494

L. Furmankiewicz

引用次数: 4

Discussion on existing methodologies for the Responsibilities Assignment Problem 关于责任分配问题现有方法的讨论

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627491

A. Pavas, V. Staudt, H. Torres-Sanchez

引用次数: 17

Application of neural networks to voltage fluctuations measurement — neural networks flickermeter 神经网络在电压波动测量中的应用——神经网络闪变仪

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627515

M. Szlosek, B. Świątek, Z. Hanzelka

引用次数: 10

Distributed system for electrical power quality improvement 分布式电能质量改善系统

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627505

R. Klempka

引用次数: 13

Modelling and analysis of a three-phase quadrature phase shifter with a hybrid transformer 带混合变压器的三相正交移相器的建模与分析

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627499

J. Kaniewski, Z. Fedyczak

引用次数: 14

Instantaneous single-phase system power demonstration using virtual two phase theory 利用虚两相理论进行单相系统瞬时功率演示

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627507

B. Dobrucký, M. Pokorny, M. Beňová

{"title":"Instantaneous single-phase system power demonstration using virtual two phase theory","authors":"B. Dobrucký, M. Pokorny, M. Beňová","doi":"10.1109/ISNCC.2008.4627507","DOIUrl":"https://doi.org/10.1109/ISNCC.2008.4627507","url":null,"abstract":"The paper deals with the virtual approach and application of orthogonal transform theory, used for ordinary single-phase system to its transformation into equivalent two-axes system. It is well known that the analysis of multiphase systems can be more simple using the Park/Clarke transform into two-axis stationary (alpha, beta) or rotary (d, q) reference frame. The above transform can be used for electrical machines as well as for power electronic systems. The projection of time state-space vector for any quantity of symmetrical three-phase system in Gauss complex plane (alpha + jbeta) shows out six-side symmetry of vector quantity trajectory. Then, analysis of such system can be focused on the interval equal to 1/6 of the time period only. It is clear that when using similar transform of single-phase quantity into equivalent two-axes orthogonal system it will be possible to use all advantages as in three-phase transformed system with respect of 4-side symmetry instead of 6-side of previous case. Analysis in such orthogonal coordinates system will then be identical to the three-phase one under Park/Clarke transform, including determination of instantaneous reactive power. The presented method creates a virtual two-phase system from the original singlephase system by adding a new fictitious phase. The new thought is based on the idea that ordinary singlephase quantity can be complemented by virtual fictitious phase so that both of them will together create orthogonal system, as is usual in three-phase systems. Application of above-mentioned theory makes it possible to use complex methods of analysis as instantaneous reactive power method. Both, the active and reactive powers can be determined by this way. Practical application of the method is outlined for the case of active and reactive power determination for single-phase power active filter, unified power flow controller, and dynamic voltage restorer, Fig.1 [14], [15], [17] - [19].","PeriodicalId":143815,"journal":{"name":"2008 International School on Nonsinusoidal Currents and Compensation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114055996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Instantaneous p-q power Theory for compensating nonsinusoidal systems 补偿非正弦系统的瞬时p-q功率理论

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627480

E. Watanabe, H. Akagi, M. Aredes

引用次数: 110

Steady and transient state analysis of a matrix-reactance frequency converter based on a boost PWM AC matrix-reactance chopper 基于升压型PWM交流矩阵-电抗斩波器的矩阵-电抗变频器稳态与暂态分析

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627512

I. Korotyeyev, Z. Fedyczak, P. Szcześniak

引用次数: 11

Reconstruction of spectrum of the nonlinearly distorted periodic signals sampled non-coherently 非相干采样非线性失真周期信号的频谱重建

2008 International School on Nonsinusoidal Currents and Compensation Pub Date : 2008-06-10 DOI: 10.1109/ISNCC.2008.4627503

R. Klosinski

{"title":"Reconstruction of spectrum of the nonlinearly distorted periodic signals sampled non-coherently","authors":"R. Klosinski","doi":"10.1109/ISNCC.2008.4627503","DOIUrl":"https://doi.org/10.1109/ISNCC.2008.4627503","url":null,"abstract":"Factors characterizing the electrical energy quality (e.g. THD) are determined on the basis of voltage and current signals spectrum. The spectrum estimation errors come from the spectrum leakage caused by the non-coherent sampling and distortions appearing in the input circuits of the measuring system. This paper concerns the problem of accurate reconstruction of the nonlinearly distorted signal spectrum. The proposed method of the periodic input signal reconstruction (e.g. the CT primary current) is based on the modeling of the nonlinear system in a periodic steady state by a set of circular parametric operators (CPOs). This method requires coherent sampling of the measured signal that is inconvenient because of the electro-energetic system natural frequency changes. To avoid this limitation the reconstruction calculations are transferred to the spectral domain. The spectrum of the reconstructed signal is determined by means of the spectral version of the CPO (i.e. the SCPO) on the basis of the spectrum of the distorted signal. A modified discrete Fourier transform (MDFT) is used to determine the distorted signal spectrum. The MDFT is designed for the non-coherently sampled signal high accuracy spectrum analysis. The DFT modification idea consists in the adjustment of base function frequencies of the Fourier series to the analyzed signal harmonics frequencies. Some results of experiments are included.","PeriodicalId":143815,"journal":{"name":"2008 International School on Nonsinusoidal Currents and Compensation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116316379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1