Category: Master

This thesis presents “a robust control technique for three-phase AC/DC converter under unbalanced grid conditions”. The control method consists of inner-loop robust grid-current control and outer-loop proportional integral control for constant voltage (CV) control. A dual-current control for the inner-loop positive and negative sequence is employed to eliminate the unbalanced current caused by the grid…

Electric power currently is a vital power for worldwide human kinds who necessarily need to utilize. Electric power is also a boosting indicator to all field developments, so researchers have tried to research other sources which can produce electricity such as: Hydro energy, Solar energy, Nuclear energy, Gas energy, Fossil energy, Biomass energy etc. Cambodia…

Economic Dispatch (ED) of thermal power plant has main role in maintaining economic power system. The main purpose of ED is to set generator to generate maximum power according to load demand base on each generator characteristic with lower cost. In this thesis Particle Swarm optimization (PSO) is used to solve ED problem by simulation…

Study on Fast Charging for Mobile battery with constant current – constant voltage, it is a project that is getting a lot of attention for Smartphone technology today. It can show the greatness of mobile phone charging with high voltage and current stability, which has the ability to speed up the charging of mobile phones.…

his thesis describes a method of Linear Matrix Inequality (LMI) to determine robust gain for three-phase inverter under unbalanced loads. The robust control techniques applied for three-phase dc-ac inverter with an output LC filter. The control law, which employs state feedback and integration of the tracking error, and described in a synchronous 𝑑𝑞 frame and…

In a three phase AC power system active and reactive power flow from the generating station to the load through different networks, Bus and branches. The flow of active and reactive power is called power flow or load flow. It uses simplified notation such as one-line diagram and per-unit system and focuses on various forms…

Power flow is used to load the power system and generation data. The output of the power flow includes the voltage and angle values ​​of the different buses, including the calculation of the active power, inactive power and the constraint on each branch. The implementation of the power flow is by solving the equation to…

Abstract ឌីហ្សាញ និងវិភាគ SEPIC-Converter ដោយប្រើការបញ្ជាតង់ស្យុង(Design and Analyze SEPIC-Converter Using a Voltage Controller( គឺជាប្រព័ន្ធសម្រាប់គ្រប់គ្រងតង់ស្យុងដែលមានមានលក្ខណៈថេរផ្នែក Output នៅពេលដែលផ្នែក Input របស់ SEPIC Converter មានការប្រែប្រួល។ ការគ្រប់គ្រង់តង់ស្យុងនៅផ្នែក Output ឲ្យវាថេរនៅពេលដែលផ្នែក Input មានការប្រែប្រួលតែយើងនឹងប្រើប្រាស់ជាមួយប្រព័ន្ធ Control ក្នុងការគ្រប់គ្រងវា។ ប្រព័ន្ធបញ្ជាវាមានច្រើនប្រភេទសម្រាប់យកមកប្រើប្រាស់ជាមួយគម្រោងរបស់យើង។ នៅក្នុងចំណោមប្រព័ន្ធបញ្ជាទាំងអស់គឺក្រុមយើងបានជ្រើសរើសយក PI Algorithm សម្រាប់យកមកប្រើប្រាស់នៅក្នុងគម្រោងនេះដោយសារតែប្រព័ន្ធនេះគឺវាមិនមានផលរំខាន់ដល់ SEPIC Converter របស់យើង។ ឌីហ្សាញ និងវិភាគ SEPIC-Converter ដោយប្រើការបញ្ជាតង់ស្យុងយើងបានចេញចែកជាពីរដំណាក់កាលគឺ ការធ្វើ Simulation និងឌីហ្សាញ Hardware។តម្លៃដែលបានគណនារួចគឺយើងយកដាក់បញ្ចូលនៅក្នុងវិធី PSpice ដើម្បីធ្វើ Simulation ដែលយើងបានប្រើប្រាស់វាជា Program។ នៅក្នុងដំណាក់កាលនៃការធ្វើ Simulation បានចែកជាពីរទៀតគឺ Open Loop និងClose Loop។…

Cambodia is a country in Southeast Asia in the southern part of Indochina and have climate warm, humid and tropical. Based on the monsoon, Cambodia has two seasons the dry season and the rainy season. The dry season runs from November through April, when the dry wind blows from Siberia. The rainy season runs from…

A study on Design and simulation of a photovoltaic system for stand-alone and grid-connected operation mode for a residential in Cambodia. The purpose of the project study is to focus on the supply of energy, which is clean energy, reduce energy consumption that affects the environment, and the supply of electricity to a home sustainably,…