...Shirin Hassanzadeh Darani; Payam Rabbanifar; Mahmood Hosseini Aliabadi; Hamid Radmanesh Purpose The purpose of this paper is to present a new system frequency response model with participation of wind-hydro-thermal units to overcome frequency deviations. Design/methodology/approach...

...Igor Korotyeyev Purpose The purpose of this paper is to introduce a method for the analysis of steady-state processes in periodically time varying circuits. The method is based on a new definition of frequency responses for periodic time-varying circuits. Design/methodology/approach Processes...

... at: tmatsuo@kuee.kyoto-u.ac.jp 21 02 2017 06 06 2017 © Emerald Publishing Limited 2017 Emerald Publishing Limited Licensed re-use rights only Eddy current Homogenization Continued fraction Frequency response Orthogonal polynomials (1) ∂   H y ∂   x...

..., reduced order approach is used in the control system design. This study applies the modal decomposition method and the modal truncation method, thus retaining the lower order bending modes. The obtained numerical results are compared with the measured open loop frequency responses and the existing...

...) . The orthonormal vector fitting method (Deschrijver et al., 2007a, b) has been in use for several years and has been advanced and developed by several research groups (Triverio et al., 2009). A multivariate rational model R(s,λ) is used to approximate the frequency response...

... systems are often not known. For their identification, a method based on the frequency response calculation utilizing the Welch method is now presented. The main focus of the work is directed to the measurement of the frequency response by exciting the system with pseudo‐random binary signals...

..., respectively. The reason is that they have the highest electric field. Guidelines for carrying out routine‐type and special‐tests on transformers are listed based on chemical, mechanical thermal, optical, and electrical diagnostic techniques. The frequency response analysis (FRA) of the winding transfer...

.... Originality/value A state‐of‐the‐art picture of the frequency domain identification and passivity enforcement techniques is given, and a test case of actual interest fully analysed. © Emerald Group Publishing Limited 2007 Electromagnetic fields Frequency response Identification Modelling...