The IAES’s Nawala: Renewable Energy

Greetings, fellow Nawala! Hope you are always in good health.

This is the IAES Newsletter of the Institute of Advanced Engineering and Science. Today we want to share the latest issues related to renewable energy. Rathod et al. revealed that renewable energy development is used globally to meet the increasing demand. The high demand is caused that it is pollution-free and easy to access. According to Rathod et al., lately, renewable energy development is focused on hydropower, wind, photovoltaic (PV), etc. More can be read in the following article:

Renewable energy generation system connected to micro grid and analysis of energy management: a critical review

Pranita Rathod, Sanjoy Kumar Mishra, Sujit Kumar Bhuyan

Renewable energy generations have been employed throughout the world in order to meet the increasing load demand. It is a pollution free and abundantly accessible. The generation cost has been reduced because of more research advancement. Photovoltaic (PV) can’t generate throughout the day due to weather condition. In order to maintain the continuity of power generation a hybrid renewable generation system (HRGS) concept has been considered in this research work. HRGS is an integration of more than one renewable energy which consists of PV, wind, solid oxide fuel cell (SOFC), an auxiliary unit (AU). AU is used as a backup generation which can generate power when all the renewable energy fails to generate. AU may be of diesel generator (DG) or super capacitor. This paper discusses the various parts of HRGS and its comparison. Furthermore, its impact of energy management so as to deliver the energy to the grid in a continuous and reliable manner. Therefore, a detail study of different component of HRGS & renewable energy has been highlighted which will be helpful for the new researchers for advancement of power generation and its control strategy of energy management connected to the grid.

Hydropower plants focus on utilizing the flow of water converted into energy. Yunardi and Sudiarto researched the utilization of the Batang Merangin river flow. This research intends to find out how much the optimum electric power potential with the Batang Merangin river flow as a hydroelectric power plant. A complete explanation can be found in the following article:

Feasibility study of the Kerinci 350 MW hydro power plant

M. Muaz Afra Yunardi, Budi Sudiarto

The demand for electricity is currently growing rapidly. In accordance with the government’s policy to optimize the use of renewable energy sources, including water, by constructing a hydroelectric power plant. The study of the potential utilization of the Batang river flow is aimed at how much of the optimum electric power potential there is in the utilization of the Batang Merangin river flow as a hydropower plant. The results of the calculation of the potential for electric power at the Kerinci PLTA show that the optimum electrical power that can be generated is 366.27 MW and the energy produced annually is 1,443.86 GWh. The cash flow of the Kerinci hydropower project consists of technical estimates, revenues, operating and maintenance costs, inflation, taxes, and depreciation. Benefit-cost ratio analysis is calculated according to probable economic conditions during construction and lifetime. The initial investment cost for the Kerinci hydropower plant is around 12,922,000,000,000. The net present value obtained is 423,372,934,373, the internal rate of return is 10.7%, the return on equity is 16.2 years and the benefit-cost ratio is 1.2. The results show that the Kerinci hydropower plant can be built in terms of both technology and money.
Dam design to be installed on Lake Kerinci (Yunardi and Sudiarto, 2022)

Mahroug et al. researched the development of windmills to produce energy. This development is carried out regarding dual doubly-fed induction generators (DFIG). This method is carried out to increase the amount of energy produced. A detailed explanation of this method can be read on the following page:

Modeling of wind turbine based on dual DFIG generators

Rabiaa Mahroug, Mohamed Matallah, Salam Abudura

In order to investigate a viable approach to fully exploit the wind speed, the present work investigates the application of a novel wind turbine consisting of dual doubly-fed induction generators (DFIG). The model can be further used to apply in areas where the winds are high to achieve high conversion efficiency in order to produce large electric power and increase the wind turbine capacity with an economy of hardware on the one hand, and to reduce the installation cost on the other. Furthermore, this model is always guarantees the continuity of power production because if one generator fails, the second generator will keep working until the broken one is repaired. The proposed model of the wind turbine based on dual doubly-fed induction generators (WT-dual-DFIG) were using the indirect field-oriented control (IFOC) was validated by wind turbine based on single doubly-fed induction generator (WT-single-DFIG) in MATLAB/Simulink. The results of simulation show that the simulated responses of the WT-dual-DFIG increased the power by a factor of about 14.3% compared to a WT-single-DFIG due to the use of a variable speed dual-DFIG. Finally, we can say that the WT-dual-DFIG model is strongly developed and could be applied in the coming years.

Besides using hydropower and windmills, renewable energy is very familiar with photovoltaic (PV). Hassan et al. conducted research related to the use of PV supply to become an energy source for smart irrigation devices. The complete article regarding the research can be seen at:

Smart irrigation system with photovoltaic supply

Elia Erwani Hassan, Leong Lek Chung, Mohamad Fani Sulaima, Nazrulazhar Bahaman, Aida Fazliana Abdul Kadir

Maximizing crop yielding is an extensive problem faced by the population in a country. The main issue comes from the farmer who still implemented the conventional method of irrigation that required human actions, especially for water pump operation. As an alternative, the automatic solution becomes a demand with the internet of things (IoT) support system to overcome the agriculture scenario. Meanwhile, multiple sensors controlled by the ESP32 microcontroller are also used to measure the crucial parameters that influenced the living conditions of crops and are called input parameters. Meanwhile, the implementation of a fuzzy logic controller is to control the timing of water volume based on the inputs data obtained through the sensors’ responses. Solar energy is the main supply because of the zero-cost expense and environmentally friendly energy generation. In large, this research developed the smart irrigation system (SIS) with photovoltaic (PV) panels as a supply to sustain the energy required for empowering the entire process. As a result, the SIS is found as a successful system in controlling the best suitable time of water irrigation. The soil evaporation contents obtained from the experiment were also close to actual accurate data reference for Melaka state to verify the solution.

The application of renewable energy in life will have an impact on daily activities. Saravanan et al., in their research, analyzed the impact of implementing renewable energy in India. The full article can be read on the following page:

Impact of renewable energy in Indian electric power system

V. Saravanan, K. M. Venkatachalam, M. Arumugam, M. A. K. Borelessa, K. T. M. U. Hemapala

This paper addresses the impact of renewable power generation such as photovoltaic and wind energy in the existing power system operations. Various modeling approaches and power quality/reliability analysis of these renewable energy sources in the electric power system by researchers and research organisations and utilities are outlined and their impacts are assessed. Challenges and protection schemes of renewable power integration into the existing grid are discussed through a detailed literature review and study of renewable integration into the Indian power system are outlined including potential planning and policy actions to support renewable energy integration in India.

Some of the articles above are just a few of the many applications of renewable energy in everyday life. For more information, you can access it for FREE at:,,, and

By: Busthomi

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