Table of Contents

Open Access

ISSN 2690-1692

Journal of Energy and Power Technology , Volume 4 , Issue 1 (2022)

Pages: 218

Published: April 2022

(This book is a printed edition that was published in Journal of Energy and Power Technology)

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Cover Story: A method for operating AC microgrid in both off-grid or standalone and grid-connected modes is proposed here to minimize the use of energy storage by having more PV panels and taking curtailment of their output power. When the sunshine becomes dim, planned power import from the main grid or a local large-microgrid through AC-AC converters is conducted to compensate the shortage. The whole AC microgrid is operated at constant frequency with necessary reactive power compensation. Therefore power qualities of both voltage and frequency can be ensured. View this paper.

Volume 4,Issue 1

Open Access Original Research

Thermo-rechargeable Batteries Fabricated Using Low-cost Materials

Received: 15 February 2022;  Published: 30 March 2022;  doi: 10.21926/jept.2201011

Abstract

We fabricated three thermo-rechargeable batteries using low-cost transition metal hexacyanoferrate and determined the thermal voltage (Vcell) and discharge capacity (Qcell) per unit weight of the total active material in the cathode and anode. The obtained values were compared with the calculated values, which were determined by analyzing the temperature and capacity coefficients of the redox potential.

Open Access Research Article

Electrochemical Synthesis of Germanium-Polypyrrole Composite Nanomaterials in Ionic Liquids for the Fabrication of Lithium-Ion Batteries

Received: 26 December 2021;  Published: 27 March 2022;  doi: 10.21926/jept.2201010

Abstract

Herein, we report the coating of nanostructured germanium using a polypyrrole (PPy) polymer coat as a composite anode material for the fabrication of lithium-ion batteries. The Ge/PPy composites were synthesized following the direct electrochemical deposition method in an ionic liquid (IL). The results revealed that the coating of PPy on Ge helped realize stable battery cycling and reversible capacities, which were not observed in uncoated Ge. The PPy layers could effectively inhibit side reacti [...]

Open Access Original Research

A Rechargeable Aqueous Lithium-Air Battery with an Acetic Acid Catholyte Operated at High Pressure

Received: 17 February 2022;  Published: 15 March 2022;  doi: 10.21926/jept.2201009

Abstract

Acidic aqueous lithium-air batteries are attractive candidates for use as energy sources in electric vehicles because of their high energy and power densities and ability to operate under ambient conditions. An aqueous lithium-air battery with an acetic acid catholyte has a high theoretical energy density of 1,478 Wh kg–1, and the reaction product is soluble in the catholyte. In this study, we have studied the cell performance of a Li/interlayer electrolyte/NASICON-type so [...]

Open Access Original Research

Operation of AC Microgrids with PV Panels’ Output Power Curtailment for Minimizing the Use of Energy Storage

Received: 21 January 2022;  Published: 07 March 2022;  doi: 10.21926/jept.2201008

Abstract

In this paper, a method for operating AC microgrids in both off-grid or standalone and grid-connected modes is proposed to minimize the use of energy storage by increasing the number of PV panels and curtailing their output power. When the intensity of daylight decreases, power is imported from the main grid through an AC/DC/AC converter or solid-state transformers in parallel to compensate for the shortage. By using a three-phase transformer in Δ-Y connection with Y’s neutral connected to its l [...]

Open Access Original Research

An Open Source LoRa Based, Low-Cost IoT Platform for Renewable Energy Generation Unit Monitoring and Supervisory Control

Received: 16 November 2021;  Published: 17 February 2022;  doi: 10.21926/jept.2201007

Abstract

SCADA provides real-time system monitoring by constant communication and data exchange between various system devices to achieve data visualization and logging. Presently, in industrial systems, commercial SCADA systems are being used for data monitoring and control. These systems can be expensive, and as such can only be afforded by select industries. Even at these costs, the commercial SCADA systems face some challenges, which include interoperability and scalability issues. Resear [...]

Open Access Research Article

Using SIRES to Enhance Resilience in Remote & Rural Communities

Received: 29 August 2021;  Published: 21 January 2022;  doi: 10.21926/jept.2201006

Abstract

Rural and remote communities are more vulnerable to damage caused by extreme events as compared to urban areas. Natural disasters can disrupt basic supplies such as domestic water supply and cooking needs in addition to electricity outages. The recognition of the interlinked nature of food, water and energy has gained momentum over the past few years. Smart Integrated Renewable Energy System (SIRES) has been proposed to handle basic needs such as cooking, domestic and irrigation wate [...]

Open Access Review

Converting CO2 from a Harmful Gas to a Renewable Source of Matter and Energy: A Review

Received: 05 November 2021;  Published: 19 January 2022;  doi: 10.21926/jept.2201005

Abstract

The emission of greenhouse gases, specifically CO2, has reached non-acceptable levels causing global warming with adverse effects. Owing to rigorous ongoing research, these harmful substances might be converted to beneficial sources. The main objective of this study was to review the most effective processes that might utilize carbon dioxide to produce various substances, chemicals, and energy. For this, differe [...]

Open Access Review

Reactor Design for Biogas Production-A Short Review

Received: 27 September 2021;  Published: 13 January 2022;  doi: 10.21926/jept.2201004

Abstract

Biogas is an alternative to gaseous biofuels and is produced by the decomposition of biomass from substances such as animal waste, sewage sludge, and industrial effluents. Biogas is composed of methane, carbon dioxide, nitrogen, hydrogen, hydrogen sulfide, and oxygen. The anaerobic production of biogas can be made cheaper by designing a high throughput reactor and operating procedures. The parameters such as substrate type, particle size, temperature, pH, car [...]

Open Access Review

Variable Speed Diesel Electric Generators: Technologies, Benefits, Limitations, Impact on Greenhouse Gases Emissions and Fuel Efficiency

Received: 30 July 2021;  Published: 13 January 2022;  doi: 10.21926/jept.2201003

Abstract

A substantial share of the electric energy is generated with synchronous generators that provide sustained alternating current (AC) voltage and frequency energy to regional and national power systems, which subsequently transport and distribute it to diverse users. In an attempt to reduce environmental effects, electric energy markets have recently become more open, resulting in more flexible distributed electric power systems. In such distributed systems, stability, quick and effici [...]

Open Access Review

A Review on High-Capacity and High-Voltage Cathodes for Next-Generation Lithium-ion Batteries

Received: 30 June 2021;  Published: 10 January 2022;  doi: 10.21926/jept.2201002

Abstract

lithium-ion battery (LIB) is at the forefront of energy research. Over four decades of research and development have led electric mobility to a reality. Numerous materials capable of storing lithium reversibly, either as an anode or as a cathode, are reported on a daily basis. But very few among them, such as LiCoO2, lithium nickel manganese cobalt oxide (Li-NMC) variants (LiNi

Open Access Editorial

Acknowledgement to Reviewers of Journal of Energy and Power Technology in 2021

Received: 05 January 2022;  Published: 06 January 2022;  doi: 10.21926/jept.2201001

Abstract

The editors of Journal of Energy and Power Technology would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2021. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers rec [...]

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