Abstract This study focuses on stability of weak grid connected voltage source converter (WG‐VSC) in Low‐frequency mode (LFM) (around 1–10 Hz), which is dominated by interactions among phase‐locked loop (PLL), outer control and condition. In order to clearly reveal LFM mechanism WG‐VSC, a simple but effective PLL‐equivalent model has been proposed. First, generic small signal consisted PLL ‘out...

With the Lv’s distribution (LVD), the chirp rates of linear frequency modulated (LFM) signals can be more accurately estimated for the local polynomial periodogram (LPP). Comparing to the estimation methods based on the polynomial Fourier transform (PFT) and fractional Fourier transform (FrFT), it is shown that LPP with the chirp rate estimated by LV’s distributioneffectively obtains better per...

This paper investigates the generalized Parseval’s theorem of fractional Fourier transform (FRFT) for concentrated data. Also, in the framework of multiple FRFT domains, Parseval’s theorem reduces to an inequality with lower and upper bounds associated with FRFT parameters, named as generalized Parseval’s theorem by us. These results theoretically provide potential valuable applications in filt...

M. H. Miguélez1, R. Zaera2, A. Molinari3, R. Cheriguene1, and A. Rusinek4 Department of Mechanical Engineering, Universidad Carlos III, Leganés, Madrid, Spain Department of Continuum Mechanics and Structural Analysis, Universidad Carlos III de Madrid, Leganés, Madrid, Spain Laboratory of Physics and Mechanics of Materials, Université Paul Verlaine-Metz, Metz cedex, France National Engineering S...

This study examines the accuracy and value of three different PV module performance modeling approaches by calibrating selected performance models to outdoor IV data measured on different module technologies. We compare measured and modeled IV characteristics by examining the error distributions and correlations with time varying quantities to assess the accuracy of each model for the modules t...

This paper investigates the joint target parameter (delay and Doppler) estimation performance of linear frequency modulation (LFM)-based radar networks in a Rice fading environment. The active radar networks are composed of multiple radar transmitters and multichannel receivers placed on moving platforms. First, the log-likelihood function of the received signal for a Rician target is derived, ...