Journal of Science Engineering Technology and Management Science

Implementations that connect PV-produced electricity to utility networks have been successfully designed. The existing systems employ single-stage converters or divided their conversion process into two stages. The first converter stage operates as MPPT for PV power optimization whereas the second stage functions as utility interface in two-stage converter systems. The single-stage converter system enables operation of an inverter which performs both functions for the system. A PV-Grid infrastructure with a single-stage voltage source inverter system serves as the main suggestion of this research. A basic control circuit enables both maximum PV power generation and equalizes the power output between PV and inverter systems. The analysis requires simulation testing that confirms its validity.

Keywords : Grid, Inverter, Photovoltaic, Maximum Power Point, and Equilibrium Power

Author : Hima Bindu and Someshwar

Title : VSI-Based Single-Stage PV-Grid System with a Basic Control Circuit

Volume/Issue : 2025;02(05)

Page No : 01-06

The reliability of the series can be ensured at higher electric current values during the commutation process by employing thermal imaging to assess the quality of an electro-mechanical relay during manufacture. Thermal photography is used during exploitation to help identify which contacts require replacement and to offer information about the extent of contact wear. The length of gas discharge is measured using thermal imaging, and this length serves as a gauge for how quickly the contacts are wearing out. A technique for evaluating the quality of electro-mechanical relays, which are specifically designed for switching strong electrical circuits used in railway automation, is provided in the article.

Keywords : Thermography, quality, NDE, and electromechanical relays

Author : Nagendra Reddy

Title : Thermographic Assessment of the Quality of Electro-mechanical Relays in Railroad Automation

Volume/Issue : 2025;02(05)

Page No : 07-11

The research introduces Vehicle to Grid (V2G) technologies for improving solar power quality by designing shunt active filters. A third-order battery model serves as the foundation for the presented dynamic PHEV model and complete system model which incorporates solar generation. The proposed power electronic interface enables a basic battery system to control both PHEV charging and discharging operations. The active filter controller derives its design from the p-q theory to correct the changing real and reactive power output from PHEVs thus improving wind power generation performance. Experimental evidence proves that electric vehicles linked to photovoltaic power generation systems provide filtering capabilities.

Keywords : Wind power, V2G, PHEVs, active filters, and battery schemes

Author : Samuel Johnson

Title : Design a Smart Active Filter for Solar Power System using V2G Technology

Volume/Issue : 2025;02(05)

Page No : 12-19

Transmission of stable ripple-free power to heating regions is necessary to maintain temperature stability. Ripples in the power supply would result in high power losses together with unpredictable and abnormal temperature rises and power state instability. Excessive current ripple causes electrolytic capacitors in the circuit to decrease their operational life span. This article presents a plan that reduces load management ripple factor to 0.4% by using simple cost-effective available electronic components.

Keywords : Operational amplifier, LC filter, IGBT, and ripple factor

Author : Wang Chie

Title : An LC Filter and IGBT-Based High Regulated Low Ripple DC Power Supply

Volume/Issue : 2025;02(05)

Page No : 20-25

The PV module demonstrates a significant market expansion as a photovoltaic (PV) power generation technology. The requirement of a high voltage gain converter exists for connecting PV modules to the power grid through a dc–ac inverter. A converter with floating active switches should be studied because it will protect PV panel users and installers by blocking power during ac module shut offs. The converter obtains high voltage gain through effective operation without requiring excess duty ratios or many turns-ratios like linked inductors; it reuses the coupled inductor leakage energy for improved efficiency. These features contribute to the module achieving remarkable efficiency performance. The paper presents analytical results for steady state operation of continuous and discontinuous and boundary conduction modes as well as a detailed description of working principles. The developed prototype circuit of the suggested converter functions with 15V input voltage, 200V output voltage, and 100W output power. The element achieves 95% efficiency under full load while reaching its highest efficiency of 95.3%.

Keywords : Soft computing, Simulink, PV module, electrical risks, and DC-DC converter

Author : Robert Stewart and Samuel Jack

Title : High Step-Up DC-DC Converter Soft Computing Module for PV Module

Volume/Issue : 2025;02(05)

Page No : 26-31

The power electronics method serves to regulate variable speed operation within variable speed pump storage systems according to this research. Research focused on reviewing different variable-speed pump storage systems by analyzing both power electronics converters and doubly fed asynchronous machines. The model uses Cyclo-converter and two-level along with three-level voltage source-converter and H-bridge cascaded eleven-level converters as power electronics converters. This analysis evaluates the speed variation together with total harmonic distortion appearing in rotor current of double-fed asynchronous machines for various converter types. The study confirms that the H bridge eleven level converter provides the best available solution. Every simulation model needed the PSIM software for execution.

Keywords : Double-fed asynchronous machine, cyclo-converter, Pump storage, variable speed, pulse width modulation and multilevel converter

Author : Pravallika

Title : Converters for Power Electronics in Variable Speed Pump Storage

Volume/Issue : 2025;02(05)

Page No : 32-38