Now showing 1 - 10 of 16
  • Publication
    Microcontroller based MPPT solar charge controller
    This paper presents the Arduino Nano microcontroller based maximum power point tracking (MPPT) solar charge controller. The optimum solar photovoltaic power is extracted using the Perturb and Observe (P&O) MPPT algorithm. Whilst there are many MPPT solar charge controllers available in the market, the Arduino Nano based MPPT solar charge controller is an attractive method for MPPT controller due to its adaptability, simple, cheap, and durable with good performance for remote areas application with cheaper cost than conventional MPPT charge controllers. This system ensures maximum power is harvested from the photovoltaic panel and capable to charge the battery as well as maintain the battery health condition. This will increase the battery lifespan and increases the efficiency of the photovoltaic panel under varying solar insolations. In this paper, the Perturb and Observe (P&O) algorithm method is developed by using an Arduino Nano based MPPT controller for the photovoltaic generation system. The test result has shown the performance of the proposed controller is capable of tracking the photovoltaic maximum power point and extracting the optimum available power whilst charging the battery in the healthy mode.
  • Publication
    Performance analysis of smart lighting control system for sustainable campus operation
    Global warming is a growing issue today due to the concerns of carbon emissions to the environment. Meanwhile, learning institutions such as university could play a significant role in promoting energy conservation and sustainable campus operations. The objective of this paper is to highlight the performance of smart lighting control system for restrooms where the project has been carried out at the Faculty of Electronic Engineering Technology, Universiti Malaysia Perlis. The methodology processes include the initial study and field measurement of the energy consumption for lighting system during pre-retrofit condition, design, and development of the lighting control system and lastly analysis of the designed system in post-retrofit condition after installation. On the overall, 58 motion sensors have been installed at 30 restrooms where the result shows that in average 77.5% of reduction in energy consumption per day for each restroom. This situation has given tremendous benefits to the university operation where the university could save 9377 kWh per year and reduced RM 3423 from electricity bill per annum. In addition, this project also contributes to the environmental sustainability where the amount of electrical energy that has been successfully reduced is equivalent to 6508 kg of CO2 avoidance to the environment.
  • Publication
    Control of a multi-functional grid-connected solar PV system using instantaneous reactive power (PQ) theory for current harmonic alleviations
    In recent years, the advance usages of non-linear loads have led to the serious power quality problem in the distribution system. Non-linear load will inject the current harmonics and cause power quality problem at Point of Common Coupling (PCC). This problem can be improved by using power filter. Power filter can be divided into passive power filter and active power filter. Passive filter is an appropriate solution to solve power quality problem in term of harmonic mitigation due to a simple circuit, low cost and less energy requirement. However, active power filter (APF) is more suitable due to better performance to solve power quality problem for current harmonics issue. This paper focuses in designing the application of a multi-functional grid-connected solar PV system integrated with DSTATCOM by using Instantaneous Reactive Power (PQ) theory controller to mitigate the current harmonics injected by non-linear load at the distribution system. MATLAB/SIMULINK software is used to simulate the performance of the multi-functional GCPV based SAPF according to IEEE Standard 519:2014 which THD of the line current at the Pont of Common Coupling (PCC) should be less than 8%.
  • Publication
    Technical and economic evaluation of a solar photovoltaic (PV) based distribution static synchronous compensator (DSTATCOM)
    This paper presents a three-phase three-wire solar photovoltaic (PV) based DSTATCOM that can improve power quality problems. The solar PV system is designed based on peak-sun approach and simulated in HOMER (Hybrid Optimization Model for Electric Renewable) software. The technical and economic feasibility of different combinations of the system sizing are evaluated based on cost of electricity (COE), the net present cost (NPC) and the percentage of excessive electricity produced. The optimum size of PV system the will be able to supply the load with improved power quality features without any additional hardware to the system. The cost of electricity (COE) of the proposed system is still lower than the feed-in tariff (FiT) scheme provided by the government. Thus, the results showed that the proposed system is viable to improve the power quality at the distribution network.
  • Publication
    Smart lighting system control strategies for commercial buildings: A review
    Rapid global economic growth and growing population have tremendously led to the increasing demand for energy needs in commercial and residential buildings. The main energy resources for electrical energy generation in Malaysia are fossil fuels. The increase in electricity demands causes simultaneous proportional growth in fossil fuel consumption, thereby leads to higher greenhouse gas emissions. Buildings have emerged as the most voracious electrical energy consumer which contributes over one-third of global energy consumption. Furthermore, lightings and air-conditioning systems have the most significant impacts on the total electricity usage of buildings in Malaysia. Thus, energy efficiency efforts targeting both loads will significantly reduce total energy consumption in the buildings. This paper aimed at reviewing energy efficiency efforts at the commercial buildings and comparison between simple strategy and SMART Building by using Building Energy Management System (BEMS). Many aspects of energy efficiency efforts will be considered such as energy consumption, occupant comfort, and system cost. Furthermore, suggestions for improving energy efficiency in the commercial building using the best strategy to reduce energy consumption by using a lighting control system will be discussed.
      9  19
  • Publication
    DSP based Hardware-in-the-Loop (HIL) Simulation for GCPV-based DSTATCOM using Frequency Domain Controller
    This study presents a comprehensive simulation of digital control applications for a grid-connected photovoltaic (GCPV) system using a Hardware-in-the-Loop (HIL) simulation approach that incorporates a Digital Signal Processor (DSP). The simulation is carried out using the MATLAB Simulink block set and employs a frequency domain controller as the control algorithm. The simulation inputs, which consist of voltage and current sensor readings, are processed by an ADC idealizer block that produces output based on a real-time DSP-based HIL system. The output is then utilized to generate a pulse width modulation (PWM) signal, which drives the voltage source inverter (VSI). The simulation's primary objective is to demonstrate the simplicity and efficacy of the proposed frequency domain controller design for the GCPV-based DSTATCOM system. The simulation results validate the performance of the controller under various operating conditions, including steady-state, unbalanced loads, variable solar insolation, and day-to-night transitions.
      1  40
  • Publication
    Optimal sizing and economic analysis of self-consumed solar PV system for a fully DC residential house
    The fluctuation offuel prices has become concern to the Malaysian since it will influence the electricity tariff. The objective of this paper is to design a self-consumed DC power system for a residential house from renewable energy resource which is solar PV that will be independent from the utility grid. The methodology proposed are configuring daily load demand, sizing PV array, battery bank and lastly simulation and optimization of the system through HOMER software. Based on HOMER simulation, the optimum PV array size is 3.5 kW while the 48 V battery bank needs 32 units of 12 V batteries, which is designated for 3 days of autonomy. The system could meet 100% of load demand throughout the year with 37.08 % of excess energy. The consumers can benefit of reducing utility electricity bills up to 2,434 kWh annually and to the environmental aspect, will avoid 1. 7 tons of CO2 releases into the atmosphere.
      19  1
  • Publication
    Performance of a Single-phase Grid-integrated Photovoltaic based DSTATCOM using Modified p-q Theory Control Algorithm.
    This paper investigates the performance of a single-phase grid-integrated photovoltaic based DSTATCOM by using modified p-q theory control algorithm. Previously, p-q theory controller has been employed for a three-phase DSTATCOM system. Thus, this paper employs a modified p-q theory control algorithm for a single-phase grid-integrated solar PV (GCPV) based DSTATCOM. Thus, the GCPV system has improved with DSTATCOM capabilities such as harmonic reduction for a single-phase distribution system under varying solar irradiances. The simulation results have been obtained by using MATLAB/SIMULINK software in accordance with IEEE Standard 519:2014, which stated that the THD should be less than 8% for the line current at the Point of Common Coupling (PCC). The performance of the single-phase GCPV based DSTATCOM has been analysed for dynamic and steady-state conditions under varying solar irradiances.
      1  32
  • Publication
    Framework design of an off-grid remote 3-bedroom house using solar DC power system
    The utilization of renewable energy power systems is currently gaining widespread popularity with the increase of energy demand and concerns on the carbon dioxide emission to the environment that will cause global warming. Malaysia has move forward by promoting used of renewable energy such as solar PV to the public where it generated locally at a distribution voltage level. Presently there is growing interest in employing DC as a means of delivering power to the load due to its numerous advantages in comparison to AC. Furthermore, since the electricity generated by a solar PV system is in DC, the totally DC system will contribute to the overall simplicity of the system design. Nevertheless, literature reviews reveal that there is a broad variety of design approaches and assumptions employed in various research studies, resulting in significant variability. In addition, numerous approaches have been identified in economic analysis. Therefore, it is crucial to develop a uniform set of design principles and procedures, together with an economic structure, for the design aspects of DC system. Therefore, the objective of this study is to improve the framework design of an off-grid solar PV system house using solar DC power system to achieve the 100% renewable energy fraction and fulfilling the annual load demand. The load will be a 3-bedroom residential house that consumed within the smallest energy consumption band which is 200 kWh per month. The processes involved are project site selection, residential load profiling, design calculation, verification of the designed system through PVsyst and Homer simulation for technical and economic performance and lastly prototype development. The design process for a technical aspect has been performed by deploying design calculations, which were subsequently validated through the use of PVsyst simulation. Then, a techno-economic analysis of a solar PV power system was conducted utilizing the Homer Pro software. Finally, the procedure of designing and developing a prototype known as the DC power module for the purpose of distributing energy to a fully DC-powered residential building. Based on the results obtained, both methods which are design calculations and have PVsyst simulation exhibited nearly identical results hence it can be concluded that both methodologies are feasible in ascertaining the most effective configuration for a solar PV power system. For the techno-economic analysis utilizing Homer Pro software, the solar PV DC system demonstrates lower initial cost and LCOE compared to the solar PV AC system. However, in terms of LCOE value, is comparatively higher when compared with the grid tariff rate to users consuming 200 kWh. In addition, DC power module has been successfully designed and developed for distribution of DC power to a fully DC residential. This prototype can provide electricity to both high-power and low-power loads using both of its 48 V DC and 12 V DC output with the maximum power nearly 1,600 W. Lastly, in terms of environment, this design set-up is expected to benefit the residential consumers in reducing utility electricity consumption up to 2,434 kWh per year which is equivalent to almost 1.7 tons of carbon emissions avoidance into the environment annually.
      12  1
  • Publication
    Digital Signal Processing Solutions for Motor Control using the TMS320F240 DSP-Controller
    ( 2004)
    Jimirafizi Jamil
    ;
    Ismail Daut
    ;
    ;
    Shuib Taib
    This paper presents a Digital Signal Processing (DSP)solutions in digital motor control applications. Digital Signal Processing (DSP) technology is enabling cost effective and energy efficient control system design. The performance of a DSP architecture allows an intelligent approach to reduce the complete system costs of digital motion control applications using cheaper electrical motors, fewer sensors and smaller size of EM/ filters.
      20  28