Research Article
Battery-Integrated LED TV with Smart Power Management for Panel Protection and Voltage Stabilization
Md Rayhan Tanvir*
Issue:
Volume 14, Issue 5, October 2025
Pages:
88-101
Received:
22 August 2025
Accepted:
10 September 2025
Published:
26 September 2025
Abstract: LED TVs provide crystal-clear image quality and are energy-efficient, but are not free from voltage fluctuations, voltage spikes and power losses that can cause great damage to these TVs, especially in the areas where the power supply is not stabilized. These power problems can result in image quality degradation, flicker or permanent damage to the LED panel. In this paper, a novel power architecture is proposed where a rechargeable lithium-ion battery and an intelligent power management system are built within the LED TV frame. Unlike previous works, which either need infrastructure for solar power, or access to an external UPS unit, or partial battery EMI shielding, this is the first embedded system that offers sub-millisecond switching, adaptive brightness control and full battery management inside the television chassis. The system contains an AC-DC charger, bi-directional DC-DC converters, a microcontroller unit (MCU), a high-speed switchover circuit (HSSC) composed of MOSFETs and a reliable Battery Management System (BMS). Features include adaptive load management, undervoltage protection and soft start to reduce inrush current. Simulation results by using LTSpice and Proteus confirm that the system can achieve the switchover latency of less than 1 ms, keep the panel voltage within the range of ±0.5% during voltage sags and surges, and prolong the backup operation time of up to 2 hours for a 32″ LED panel. This integrated solution removes the requirement to use separate UPS systems, increases reliability and also enables future integration with renewable sources like rooftop solar. The architecture fits with the trends that have been emerging towards low voltage DC, smart grid standard and embedded energy resilience of consumer electronics appliances.
Abstract: LED TVs provide crystal-clear image quality and are energy-efficient, but are not free from voltage fluctuations, voltage spikes and power losses that can cause great damage to these TVs, especially in the areas where the power supply is not stabilized. These power problems can result in image quality degradation, flicker or permanent damage to the...
Show More
Research Article
Power Market Interconnection in the Caribbean Region
Francisco Nunez-Ramirez*,
Lluís Pacheco Valls,
Joakim Vilá Bramón
Issue:
Volume 14, Issue 5, October 2025
Pages:
102-109
Received:
23 September 2025
Accepted:
5 October 2025
Published:
7 November 2025
DOI:
10.11648/j.epes.20251405.12
Downloads:
Views:
Abstract: The interconnectivity of energy markets is a tangible reality that generates economies of scale, reduced reserves, more efficient operation of electrical systems, more optimal use of natural resources in each country or region, as well as the strengthening of relations between the countries participating in this new regional electricity market. Furthermore, the renewable energy potential in the Caribbean and South America, based on solar, wind, hydroelectric, biomass, geothermal, and tidal energy, among others, ensures a stable and reliable supply of energy to the region. Nevertheless, the greater the amount of renewable energy available, the greater the need for rotating energy from non-renewable energy sources to ensure the stability, security, and integrity of the electrical system, which increases its operational costs. Motivated by these premises, we develop a research project that allowed us to demonstrate the technical, economic, and financial feasibility of interconnected electricity markets in the countries of the Caribbean region. The Caribbean region, characterized by its diverse cultures and economies, faces unique challenges in energy supply due to its geographical fragmentation. This paper explores the potential for power market interconnection among Caribbean nations to enhance energy security, economic efficiency, and environmental sustainability. By evaluating technical, economic, and political aspects, this study aims to provide a comprehensive overview of how interconnected power markets could transform the region’s energy landscape.
Abstract: The interconnectivity of energy markets is a tangible reality that generates economies of scale, reduced reserves, more efficient operation of electrical systems, more optimal use of natural resources in each country or region, as well as the strengthening of relations between the countries participating in this new regional electricity market. Fur...
Show More
