International Journal of Case Reports and Images (IJCRI) is an international, peer reviewed, monthly, open access, online journal, publishing high-quality, articles in all areas of basic medical sciences and clinical specialties.Aim of IJCRI is to encourage the publication of new information by providing a platform for reporting of unique, unusual and rare cases which enhance understanding of disease process, its diagnosis, management and clinico-pathologic correlations. Neonates usually die within the first few days of life from infection or dehydration related complications. Prenatal diagnosis remains difficult but may be possible in high risk pregnancies by performing a fetal skin biopsy or by three-dimensional ultrasonography. Case Report: We report the case of Harlequin ichthyosis for its rarity and briefly review literature. Conclusion: This case has been reported for the rarity of Harlequin ichthyosis and to create awareness among pediatricians to identify the condition promptly.
Summary
Synchronizing methodology for shunt active power filter (SAPF) based on the resonant controller using generalized integrator (GI) in the stationary reference frame is of great interest for researchers now a day. In this paper, a phase synchronizing technique based on the complex coefficient filter (CCF) embedded with a frequency locked loop (FLL) is proposed for the fundamental active and reactive component extraction of load current and unit template generation from grid supply. The proposed CCF‐FLL–based control works effectively under varying grid frequency, distorted and unbalance grid voltage conditions to generate the reference source current at a unity power factor for proper harmonic compensation using an indirect current control method. In this work, a detailed mathematical modeling for development of control logic for CCF‐FLL is done, and its feasibility with the bode plot is also confirmed. Simulation for SAPF is performed using both CCF and CCF‐FLL–based control strategy separately to judge the performance of each. Simulation confirms that the proposed CCF‐FLL based control is capable of maintaining the source current with low total harmonic distortion (THD) as per the IEEE‐519 standard with the nonlinear load. The effectiveness of the proposed controller for desired harmonics compensation is also validated through real‐time simulation using OPAL‐RT OP4510 platform.
This paper presents a new method for harmonic and reactive power compensation using a Particle Swarm Optimization (PSO) algorithm for active power filter (APF) for power quality improvement under dynamic loading and nonideal mains conditions. The PSO comprises two similar swarm group (swarm size-25), and it has been designed to extract fundamental frequency components from non-sinusoidal and unbalanced currents instead of conventional low pass filter. The reactive power compensation is done without sensing load currents, which gives simplicity in control with less number of current sensors. The performance of the APF with the proposed particle swarm optimization compensation algorithm is found to be considerably effective and adequate to compensate harmonics and reactive power. The results show excellent behaviours and performances.
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