Login Register Cart 0
Generic placeholder image

Current Signal Transduction Therapy

Editor-in-Chief

ISSN (Print): 1574-3624
ISSN (Online): 2212-389X

Back
Journal Home About Journal Editorial Board Journal Insight Current Issue Volumes/Issues
Subscribe
General Research Article

LabVIEW Based Performance Assessment of Backup Emergency Power Supply for Critical Medical Equipment

Author(s): Pandiaraj G.* and S. Muralidharan

Volume 16, Issue 1, 2021

Published on: 19 November, 2019

Page: [72 - 81] Pages: 10

DOI: 10.2174/1574362414666191120101415

Abstract

Introduction: In the recent past, the requirement of backup sources has increased exponentially and necessitated massive energy storage devices like lead-acid batteries, and supercapacitors.

Materials and Methods: Especially these power backup resources become inevitable, while installing critical diagnostic and lifesaving equipment. The storage system, usually lead-acid battery bank, needs to be connected to the electrical appliances through a converter station where the energy conversion takes place. Such practices are involved in medical emergency appliances of uninterrupted power supply. The devices like monitoring instruments, patient’s artificial respiratory systems, light loads in operation theaters, motor loads and other electronic devices of laptop & desktop computers act as a source of harmonics. Apart from these, the sine wave / square wave inverter also introduces harmonics as well as micro ripples on the battery side. These micro frequency components have certain impacts on the storage system performance, efficiency, and utilization of electrical energy.

Results and Conclusion: This work investigates the impact of micro frequency components on the lead-acid storage battery when it is operating with a sine wave inverter supplying Resistive load and RLE load. In order to perform the investigation, a hardware test bench was created. The results of laboratory tests on a lead-acid battery show that batteries lose capacity and the utilization gets reduced by the frequent use. This manuscript opens up a new direction of research in the medical emergency backup system operating with a 12V DC system.

Keywords: Medical equipment, micro ripples, emergency power backup, 12V DC system, dynamic charge acceptance, RLE.

Graphical Abstract

[1]
Smith MJ, Gladwin DT, Stone DA. Experimental analysis of the influence of high-frequency ripple currents on dynamic charge acceptance in lead-acid batteries. IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, Beijing. 7140-5.
[http://dx.doi.org/10.1109/IECON.2017.8217249]
[2]
Kupchinov AD, Gusev YP, Monakov YV. Batteries current ripples in float charge mode. IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus). St. Petersburg. 913-5.
[http://dx.doi.org/10.1109/EIConRus.2017.7910704]
[3]
Symons PC. Optimising the performance and life of batteries in continuous power systems. Proceedings of the Power Quality Solutions / Alternative Energy Conference. Las Vegas. 1996; 169-70.
[4]
Ruddell AJ, Dutton AG, Wenzl H, et al. Analysis of battery current microcycles in autonomous renewable energy systems. J Power Sources 2002; 112: 531-46.
[5]
Gogoana R, Pinson MB, Bazant MZ, Sarma SE. Internal resistance matching for parallel-connected lithium-ion cells and impacts on battery pack cycle life. Journal of Power Sources 2014; 252: 8-12.
[http://dx.doi.org/10.1016/j.jpowsour.2013.11.101]
[6]
Gong X, Xiong R, Mi CC. Study of the characteristics of battery packs in electric vehicles with parallel-connected lithium-ion battery cells. IEEE Trans Ind Appl 2015; 51(2): 1872-9.
[http://dx.doi.org/10.1109/TIA.2014.2345951]
[7]
Yang N, Zhang X, Shang B, Li G. Unbalanced discharging and aging due to temperature differences among the cells in a lithium-ion battery pack with parallel combination. Journal of Sources 2016; 306: 733-41.
[http://dx.doi.org/10.1016/j.jpowsour.2015.12.079]
[8]
Shi W, Hu X, Jin C, Jiang J, Zhang Y, Yip T. Effects of imbalanced currents on large-format LiFePO4/graphite batteries systems connected in parallel. Journal of Sources 2016; 313: 198-204.
[9]
Mao X, Ayyanar R, Krishnamurthy HK. Optimal variable switching frequency scheme for reducing switching loss in single-phase inverters based on time-domain ripple analysis. IEEE Trans Power Electron 2009; 24(4): 991-1001.
[http://dx.doi.org/10.1109/TPEL.2008.2009635]
[10]
Menaka S, Muralidharan S. Symmetric and asymmetric multilevel inverter topologies with device count: A review. Int J Pure Appl Math 120(6): 10875-904.
[11]
SatheeshPrabu MMB, Muralidharan S. Design and development of Z source inverter in DGS environment. International Journal of Applied Engineering Research 10(9): 7463-8.
[12]
Prabhakar G, Selvaperumal S, Nedumal PP, Fuzzy PD, Plus I. Control-based adaptive cruise control system in simulation and real time environment. IETE Journal of Research 2019; 65(1): 69-79.
[13]
Ibrahim A, Sujod MZ. Variable switching frequency hybrid PWM technique for switching loss reduction in a three-phase two-level voltage source inverter. Measurement 2020; •••: 151.
[14]
Prabhakar G, Selvaperumal S, Nedumal Pugazhenthi P. Fault data injection attack on car-following model and mitigation based on interval type-2 fuzzy logic controller. IET Cyber-Physical Systems: Theory & Applications 2018; 1-11.

Rights & Permissions Print Cite
Article Metrics
5
1
© 2024 Bentham Science Publishers | Privacy Policy