Informatics Publishing Limited

Pooja Rawat ¹, Y. S. Rajput ¹, Mahesh K. Bharti ¹, Rajan Sharma ²

Affiliations
1 Animal Biochemistry Division, ICAR-National Dairy Research Institute, Karnal 132 001, IN
2 Dairy Chemistry Division, ICAR-National Dairy Research Institute, Karnal 132 001, IN

Abstract

The present communication describes the synthesis of gold nanoparticles (AuNPs) using 1-amino-2- naphthol-4-sulphonic acid (ANSA) with enhanced stability. The method of preparation is similar to the conventional method using sodium citrate as reducing agent. Briefly, ANSA was quickly added to a boiled solution of hydrogen tetrachloroaurate under stirring, resulting in the synthesis of deep red-coloured AuNPs. The AuNPs prepared by ANSA (AuNPs-ANSA) exhibit twofold increase in stability towards sodium chloride over those prepared by sodium citrate. AuNPs-ANSA are 35.1 nm in size and particles has various shapes, viz. hexagonal, pentagonal, spherical, etc. AuNPs-ANSA can be functionalized with immunoglobulins and functionalized nanoparticles exhibit flow properties in lateral-flow assay.

Keywords

Gold Nanoparticles, Immunoglobulins, Lateral Flow Assay, Reducing Agent.

Full Text

   

Rajan Sharma ¹, Parag Nijhawan ¹

Affiliations
1 Electrical & Instrumentation Engineering Department, Thapar University, Patiala (147004), IN

Abstract

The Distribution Static Compensator (DSTATCOM) is a compensating device which is used to control the flow of reactive power in the distribution systems. This paper focuses on power quality improvement with DSTATCOM on feeders feeding linear loads, nonlinear loads and DTC induction motor drive. In this paper, effectiveness of DSTATCOM in distribution networks to compensate the load current harmonics under various operating and fault conditions is discussed and implemented. Comparison of THD analysis for different types of loads under normal and various faults conditions with or without DSTATCOM is also done in this paper. DSTATCOM is realized using IGBT based PWM-VSI inverter having a DC bus capacitor. A dqo transformation based PWM current controller is used to derive gating pulses for the IGBT switch. The models are developed and simulated in MATLAB using Simulink toolbox. It is observed that DSTATCOM is effective in compensating current, harmonics, reactive power and improving the power quality of the distribution system.

Keywords

DSTATCOM, Power Quality, VSC, Load Compensation, Dqo Transformation, Harmonic Distortion.

Full Text