Islanding detection is one of the indispensable protection detections for grid-connected inverters. The detection of islanding is the key factor that should be considered in the analysis of grid-connection security. The non-detection zone is the performance index of anti-islanding plan. According to the phase feature, to make quantitative analyses to the nondetection zone of several frequency d...

Abstract. Field-reversed configurations (FRCs) sustained by rotating magnetic fields (RMFs) with spatial highharmonic components have been studied in the metal flux conserver of the FRC injection experiment (FIX) apparatus. The high-harmonic RMF method has some unique features; (1) field lines of the RMF do not penetrate or cross the vessel wall, (2) selective penetration/exclusion of the funda...

We demonstrate a novel approach for generating a stable and low polarization-sensitive mode-locked fiber ring laser by using a low-cost Fabry-Perot laser diode (FPLD) as both the intracavity mode-locker and the band-pass filter. The FPLD pulses is seeded into a close-loop semiconductor optical amplifier (SOA) based fiber ring laser for harmonic and rational harmonic mode-locking operation. The ...

A clock recovery circuit is a key component in optical communication systems. In this paper, an optoelectronic clock recovery circuit is reported that monolithically integrates a resonant tunneling diode (RTD) and a uni-traveling-carrier photodiode (UTC-PD). The circuit is an injection-locked-type RTD oscillator that uses the photo-current generated by the UTC-PD. Fundamental and sub-harmonic c...

in the present paper we study convolution properties for subclasses of univalent harmonic functions in the open unit disc and obtain some basic properties such as coefficient characterization and extreme points.

By means of one-dimensional, electromagnetic, particle-in-cell simulations considering the effects energetic-ion injection, we study harmonic structure lower hybrid waves (LHWs) driven by energetic ions under condition where electron plasma frequency (${\ensuremath{\omega}}_{pe}$) is smaller than cyclotron (${\mathrm{\ensuremath{\Omega}}}_{e}$). It found that after LHWs are excited with wave nu...

Abstract Instabilities in multiplies of ion cyclotron frequency range are identified and termed as core emission (ICE) recent HL-2A neutral beam injection (NBI) heated experiments. Characteristics the ICE presented, including dependence harmonics features. The detected frequencies found to agree well with deuterium around magnetic axis. Additionally, exhibits a predominantly compressional prope...

Compact bound states of light pulses in ultrafast lasers are known as optical soliton molecules. They constitute nonlinear superstructures choice to investigate complex dynamical phenomena that manifest similarly a wide range systems. Akin matter molecules, molecules can feature vibrational motions between their internal constituents. However, these vibrations intrinsically nonlinear, with osci...