Journal of Engineering Technology and Sciences

This paper has two main goals: to determine appropriate parameter values for the voltage PI controller and to develop a novel control system along with reactance parameter design for PWM converters. A description regarding the application of genetic algorithms to optimize PWM converter controller parameters exists in the presented paper. The study depicts how the stability region acts at various sample times. MATLAB serves to develop a dc-link PWM ac/dc converter simulation model and genetic algorithms perform an off-line search mechanism. The simulation data reveals proper converter operation under PMDC motor loads alongside an effective and genuine performance of the proposed control method.

Keywords : Genetic Algorithms PI voltage controller PWM rectifier THD

Author : Niharika and Srikanth

Title : PI Controller for PWM Converter using Genetic Algorithms

Volume/Issue : 2025;02(04)

Page No : 01-04

The main innovation in this research includes designing a complete general choice multilevel asymmetric power converter which operates with SRM technology to meet specific electric vehicle requirements. The type of motor shape determines which inverter circuit system will function best for SRM drives. The motor shape does not influence the inverter structure for drives using sinusoidal voltages and currents. The selection process for SRM inverters depends on the quantity of stator and rotor poles while taking into account the dwell angle along with current overlap factors. The use of multilevel power converters enables diverse control possibilities while providing users with adjustable current profiles and reduced switching frequencies that lower converter loss rate. The matrix converter topology uses three dc voltage source terminals at its input to achieve improved control over flexible current profiling methods. The evaluation of the proposed multilevel matrix converter included Simulink modelling while connecting it to a finite element SRM model to show its advantages when used for EV applications.

Keywords : Matrix converter, multilevel converter, electric motor, switched reluctance motor, and FE analysis

Author : Mounica Reddy

Title : An EV Applications Multilevel Quasi Matrix Converter Design for SRM Drives

Volume/Issue : 2025;02(04)

Page No : 05-09

This study examines how public libraries in Senegal contribute to the country's health-related MDGs. It also analyses the community's information requirements related to health and the information services that libraries provide. Due to government incompetence, public libraries have faced a difficult problem in fulfilling their role in achieving the health-MDGs. The survey design, which employed questionnaires to collect data, is the methodology used in this study. Senegalese public library employees and patrons were the target demographic. The findings demonstrated that public libraries have been instrumental in helping to achieve the health-MDGs and that library patrons have a high need for all types of health information, particularly in the areas of maternity and child care. Nevertheless, the vast majority of public libraries lack Internet access. According to the findings, it is essential that all other pertinent agencies focus on the health-MDGs, particularly when it comes to supporting public libraries. In addition to providing information services for library patrons, the project will raise users' understanding of the roles public libraries play in promoting national and international policies.

Keywords : Public libraries, HIV/AIDS, development goals, health information resources, and the health millennium

Author : Shruti

Title : Impact of Public Libraries on the Health Millennium Development Goals

Volume/Issue : 2025;02(04)

Page No : 10-13

Industrial control systems require Field Programmable Gate Arrays (FPGAs) as an appropriate hardware integration. An implementation of these dynamically reconfigurable FPGAs enables digital replacement of traditional microcontrollers and DSPs to ensure fast functioning. A validation of FPGA-based implementation for DTCSVM control of induction motors appears in this research. A Xilinx System Generator functions within a MATLAB/Simulink platform to emulate the DTC-SVM control of induction motor drives.

Keywords : FPGA, Xilinx System Generator, DTC-SVM, Induction Motor, MATLAB/Simulink

Author : Vikram Singh and Ranveer Singh

Title : Three-Phase Induction Motor Drive Control Structure

Volume/Issue : 2025;02(04)

Page No : 14-19

The research develops a brand-new voltage regulator system for stand-alone photovoltaic installations incorporating battery storage elements. The PV array output experiences fluctuations based on weather factors which result in uncontrolled DC power. The DC-DC converter tracks the maximum power output based on temperature measurements along with the received irradiance levels. The maximum power point tracking (MPPT) requires the perturbation and observes algorithm for its operation. The algorithm provided outstanding performance despite conditions which affected parameters. The system receives its steady state energy from the solar cell array but maintains its dynamic energy through the battery. The control strategy maintains the system efficiency by directing SEPIC converter and bi-direction DCDC converter operation through pre-programmed modes based on the state of the battery and solar cell power supply. There exists an inverter that changes DC-DC converter outputs into AC voltage. The frequency together with the voltage regulation allows control of the AC output. The inverter voltage control uses unipolar sine wave pulse width modulation (SPWM) in a closed loop fashion. The controlled AC voltage is delivered to both grid integration systems and AC independent loads. The entire system development occurs through design and validation using MATLABSIMULINK. AC standalone load simulations demonstrate that the MPPT algorithm along with control strategy and voltage controller using SPWM approach operate effectively for the inverter.

Keywords : Perturbation and Observation, MPPT, Inverter, Bidirectional DC-DC Converter, SEPIC, and Photovoltaic Systems

Author : Ranjan Chakravarti and Narasimham

Title : A Photo-Voltaic System Voltage Controller with Battery Storage for Independent Uses

Volume/Issue : 2025;02(04)

Page No : 20-27