公开(公告)号：WO2013024500A8

公开(公告)日：2013-04-11

申请号：PCT/IT2012000251

申请日：2012-08-09

Applicant: UNIV ROMA ,  BRUZZESE CLAUDIO

Inventor： BRUZZESE CLAUDIO

IPC: G01R31/34

CPC classification number: G01R31/343

Abstract: The invention concerns a on-line evaluation of failure due to rotoric eccentricity in generators/synchronous motors by measuring inner currents of statoric winding and spectral analyses of analytical signals derived from the same by complex transformation, said method comprising the steps of: a1. Eventually a commissioning a1. step to determine parameters (a, b, c, prif), necessary in an eventual folloqing step f.; a. measurement of instantaneous inner statoric currents b. calculation of complex vectors i (q)) by formula wherein alpha = ej(2pi/n); c. spectral analyses of analytical signal associated with complex vectors of p±1 order: i(p-1), i(p+1); d. extraction of amplitudes of spectral components S1, D1, S2, D2, wherein: S7=amplitude of component with frequence f of current i(p-1); D1= amplitude of component with frequence (f-f/p) of current KM) S2= amplitude of component with frequence f of current i(p+1) D2= amplitude of component with frequence (f+f/p) of current i(p+1) p=number of polar couples of synchronous machine e. calculation of instantaneous eccentricity applying formulae and f. eventually, and only if preliminary commissioning step was carried out, to increase precision under load, it is possible, also measuring tension, estimating field angle (zeta, zeta) and thus corrective coefficient Kappa(zeta).

Abstract translation: 本发明涉及通过测量定子绕组的内部电流以及通过复杂变换从其衍生的分析信号的频谱分析，在发电机/同步电动机中由于转子偏心引起的故障的在线评估，所述方法包括以下步骤：a1。 最终调试了 确定参数（a，b，c，prif）的步骤，在最终的重新步骤中必要。 一个。 瞬时内部定子电流的测量b。 通过公式计算复数向量i（q））其中α= ej（2pi / n）; C。 与p±1阶复合矢量相关的分析信号的光谱分析：i（p-1），i（p + 1）; 天。 提取频谱分量S1，D1，S2，D2的振幅，其中：S7 =电流i（p-1）的频率f的分量振幅; D1 =电流KM的分量振幅（ff / p）S2 =电流i（p + 1）频率f的分量振幅D2 =电流i（f + f / p） p + 1）p =同步电机的极对数e。 计算瞬时偏心应用公式和f。 最终，只有在进行初步调试步骤的情况下，为了提高负载精度，也可以测量张力，估计场角（zeta，zeta），从而校正系数Kappa（zeta）。

公开(公告)号：WO2013024499A1

公开(公告)日：2013-02-21

申请号：PCT/IT2012000250

申请日：2012-08-09

Applicant: UNIV ROMA ,  BRUZZESE CLAUDIO

Inventor： BRUZZESE CLAUDIO

IPC: G01R31/34

CPC classification number: G01R31/343

Abstract: The present invention relates to a method for measurement of magnetic gap reduction in three-phase synchronous machines by "tracking of maximum and minimum amplitude tracking" of spatial trajectories of multipolar spatial vectors obtained from "split phase" statoric currents (parallel currents of a phase with parallel connection of polar bands) comprising the steps of: a.1 eventual commissioning to determine parameters (a, b, c, Prif) a. measurement of instantaneous inner statoric currents; b.calculation of complex vectors by formula (3), b1. Optional: eventual band-pass pre-filtering [f-f/p, f+f/p] to eliminate further harmonics c. tracking of maximum and minimum module of vectors of p±1 order: : A1?B1?, A2,?B2?; d. calculation of sign of B1 and B2 e. calculation of instantaneous eccentricity applying formulae (27), (28), of formulae (19), (20), (23), (24) f. calculation of eccentricity angle by formulae (29), (30), g. in order to increase the precision under load, it is possible, by measuring also tension, estimating field angle (zed, ?), and thus a corrective coefficient ?(?).

Abstract translation: 本发明涉及一种用于通过“分离相”定子电流（相位的并联电流）获得的多极空间矢量空间轨迹的“最大和最小幅度跟踪的跟踪”来测量三相同步电机中的磁隙减小的方法 具有极性带的并联连接），包括以下步骤：a.1最终调试以确定参数（a，b，c，Prif）a。 瞬时内部定子电流的测量; b。通过公式（3）计算复数向量，b1。 可选：最终的带通预滤波[f-f / p，f + f / p]以消除进一步的谐波c。 追踪p±1阶矢量的最大和最小模数：A1？B1？A2？？B2？; 天。 计算B1和B2的符号e。 计算公式（19），（20），（23），（24）f的瞬时偏心率应用公式（27），（28） 通过公式（29），（30）计算偏心角，g。 为了提高负载下的精度，也可以通过测量张力来估计场角（zed，θ），从而校正系数α（θ）。

公开(公告)号：ITRM20110441A1

公开(公告)日：2013-02-13

申请号：ITRM20110441

申请日：2011-08-12

Applicant: UNIV ROMA

Inventor： BRUZZESE CLAUDIO