Rancangan Catu Daya Cadangan SRAM  Pada Z80 Trainer

Z80 Trainer banyak digunakan dalam praktikum maupun alat bantu peraga terkait pembelajaran mikroprosesor. Dalam penggunaannya, Z80 Trainer menggunakan keypad untuk menulis kode sumber secara manual dan selanjutnya disimpan dalam memori secara volatile. Masalah yang sering terjadi adalah putusnya pasokan daya ke Z80 Trainer sehingga program yang telah ditulis tidak tersimpan dan harus ditulis kembali. Penelitian ini ditujukan untuk merancang dan mengontrol catu daya cadangan untuk SRAM di Z80 Trainer menggunakan baterai, yang mampu mendeteksi terputusnya suplai daya dari tegangan listrik PLN untuk memastikan bahwa data dan program yang telah ditulis dan tersimpan di memori tidak terhapus. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dan perancangan alat yang dilaksanakan dilaboratorium. Penelitian ini telah menghasilkan alat yang dapat mengontrol catu daya cadangan berasal dari baterai melalui rangkaian switching control unit untuk SRAM di Z80 Trainer. Hasil pengujian unjuk kerja mendapati bahwa alat yang telah dibuat dapat mengontrol atau mengatur catu daya di SRAM disaat catu daya utama PLN terputus selama kurang lebih 26 hari dengan memakai baterai Li-Ion tipe 18650 berkapasitas 3000 mAh. Pengujian lama waktu penggunaan alat d kondisi normal menggunakan catu daya cadangan mendapatkan hasil sekitar ±20 jam.Z80 Trainer is widely used in practicum and teaching aids related to microprocessor learning. In use, the Z80 Trainer uses a keypad to write source code manually and then stored in volatile memory. The problem that often occurs is that the power supply to the Z80 Trainer is cut off so that the written program is not saved and has to be rewritten. This research is designed to build and control a backup power supply for SRAM on the Z80 Trainer using a battery, which can meet the power supply cut off from the PLN mains voltage to ensure that data and programs that have been written and stored in memory are not deleted. The method used in this research is the experimental method and the design of the tools carried out in the laboratory. This research has produced a tool that can control the backup power supply coming from the battery via a circuit of the switching control unit for the SRAM on the Z80 Trainer. The test results prove that the tool that has been made can control or build power in SRAM when the main power supply is cut off for less than 26 days using a Li-Ion battery type 18650 with a capacity of 3000 mAh. Testing the length of time to use the tool under normal conditions using a backup power supply to get the result of about ± 20 hours.

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Combined Optimal Sizing and Control of Li-Ion Battery/Supercapacitor Embedded Power Supply Using Hybrid Particle Swarm–Nelder–Mead Algorithm

IEEE Transactions on Sustainable Energy ◽

10.1109/tste.2016.2582927 ◽

2017 ◽

Vol 8 (1) ◽

pp. 59-73 ◽

Cited By ~ 25

Author(s):

Tedjani Mesbahi ◽

Fouad Khenfri ◽

Nassim Rizoug ◽

Patrick Bartholomeus ◽

Philippe Le Moigne

Keyword(s):

Power Supply ◽

Particle Swarm ◽

Li Ion Battery ◽

Hybrid Particle ◽

Optimal Sizing ◽

Li Ion ◽

Embedded Power ◽

And Control ◽

Nelder Mead Algorithm

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Fabrication and Control of the Shell Thickness for Polypyrrole Hollow Sphere Using Polystyrene Templates for Using as Electrode of Li-Ion Battery

ECS Meeting Abstracts ◽

10.1149/ma2011-02/17/1398 ◽

2011 ◽

Keyword(s):

Hollow Sphere ◽

Shell Thickness ◽

Li Ion Battery ◽

Li Ion ◽

And Control

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Hybrid System of Proton Exchange Membrane Fuel Cell (PEMFC) with Battery for Portable Power Supply

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i3.34.19377 ◽

2018 ◽

Vol 7 (3.34) ◽

pp. 542 ◽

Cited By ~ 1

Author(s):

Prakash Thapa ◽

Sung Gi Kwon ◽

Jin Lee ◽

Gye Choon Park

Keyword(s):

Fuel Cell ◽

Hybrid System ◽

Power Supply ◽

Power Supply System ◽

Supply System ◽

Advanced Technology ◽

Li Ion Battery ◽

Battery System ◽

Li Ion ◽

Continuous Power

Background/Objectives: The combustion of fossil fuels and increased number of advanced technology leads to the global warming and climate change. So, to reduce the greenhouse gas emission and conserve the energy we need to use green energy like fuel cell and Li-ion battery system. This hybrid system consists of PEM fuel cell stack, Li-ion battery and bidirectional step up converter and can be used stationary as well as mobile equipment like vehicles.Methods/Statistical analysis: For the analysis of hybrid PEMFC/ Li-ion battery power supply system, portable embedded motor is proposed in this paper. The modeling, design, implementation and performance of hybrid system are demonstrate by using experimental results as well as MATLAB/Simulink.Findings: The simulation results shows that hybrid fuel cell-battery system could provide the continuous power to the sudden changing load and protect the devices. The results also shows that, bidirectional controller can successfully control the fuel cell output and maintain the state of charge of battery at a constant level which provides the significant efficiency of the hybrid power supply system and increased the life-cycle of the system more than 35%.Improvements/Applications: To improve the fuel cell system performance we need to provide the favorable conditions of temperature, pressure, humidity and control the flow rate of reactant gausses. Similarly, due to internal resistance, temperature, material used in manufacturing process, charging and discharging strategy reduces the efficiency as well as life of the battery pack. By using proper voltage balancing methodology we can maintain the similar voltage and prevent from irregular charging.

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A simple power supply and control unit for pulsed operation of a microchannel plate imaging detector

Sadhana ◽

10.1007/bf02745804 ◽

1999 ◽

Vol 24 (3) ◽

pp. 235-243 ◽

Cited By ~ 4

Author(s):

J Upadhyay ◽

H R Bundel ◽

R Chandra ◽

J A Chakera ◽

C P Navathe ◽

...

Keyword(s):

Power Supply ◽

Control Unit ◽

Microchannel Plate ◽

Simple Power ◽

Imaging Detector ◽

And Control

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Predicting the State of Power of an Iron-Based Li-Ion Battery Pack Including the Constraint of Maximum Operating Temperature

Electronics ◽

10.3390/electronics9101737 ◽

2020 ◽

Vol 9 (10) ◽

pp. 1737

Author(s):

Wei Xie ◽

Liyong Ma ◽

Shu Zhang ◽

Daxin Jiao ◽

Jiachen Ma

Keyword(s):

Operating Temperature ◽

Prediction Method ◽

Control Unit ◽

The State ◽

Battery Pack ◽

Li Ion Battery ◽

Power Pulse ◽

Thermal Constraints ◽

Li Ion ◽

State Of Power

To give full play to battery capability, the state of power (SoP) should be predicted in real time to inform the vehicle control unit (VCU) whether the upcoming driving scenarios of acceleration overtaking, ramp climbing, constant cruising and feedback braking can be sustained. In general, battery SoP conforms to prescribed constraints on voltage, current, and state of charge (SoC). Specifically, this paper takes the generally ignored operating temperature into consideration based on a differential temperature-changing model. Consequently, a SoP prediction method restricted by both electrical and thermal constraints was obtained. Experimental verifications on a Li-ion battery pack suggest that the proposed SoP prediction method can provide favorable reliability and rationality against diverse time durations, temperatures, and aging states in comparison with the instantaneous power obtained using the hybrid power pulse characteristic (HPPC) method.

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Thermal Management and Control in Hybrid Electric Vehicle Li – ion Battery

International Innovative Research Journal of Engineering and Technology ◽

10.32595/iirjet.org/v1i4.2016.17 ◽

2016 ◽

Vol 1 (4) ◽

pp. 19-25

Author(s):

Arunkumar R ◽

Malathy R ◽

Pavithra K

Keyword(s):

Electric Vehicle ◽

Thermal Management ◽

Hybrid Electric Vehicle ◽

Li Ion Battery ◽

Li Ion ◽

Hybrid Electric ◽

And Control

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Comparative Study of Equivalent Circuit Models Performance in Four Common Lithium-Ion Batteries: LFP, NMC, LMO, NCA

Batteries ◽

10.3390/batteries7030051 ◽

2021 ◽

Vol 7 (3) ◽

pp. 51

Author(s):

Manh-Kien Tran ◽

Andre DaCosta ◽

Anosh Mevawalla ◽

Satyam Panchal ◽

Michael Fowler

Keyword(s):

Equivalent Circuit ◽

Equivalent Circuit Model ◽

Lithium Ion ◽

Battery Management System ◽

Battery Management ◽

Li Ion Batteries ◽

Li Ion Battery ◽

Battery Modeling ◽

Li Ion ◽

And Control

Lithium-ion (Li-ion) batteries are an important component of energy storage systems used in various applications such as electric vehicles and portable electronics. There are many chemistries of Li-ion battery, but LFP, NMC, LMO, and NCA are four commonly used types. In order for the battery applications to operate safely and effectively, battery modeling is very important. The equivalent circuit model (ECM) is a battery model often used in the battery management system (BMS) to monitor and control Li-ion batteries. In this study, experiments were performed to investigate the performance of three different ECMs (1RC, 2RC, and 1RC with hysteresis) on four Li-ion battery chemistries (LFP, NMC, LMO, and NCA). The results indicated that all three models are usable for the four types of Li-ion chemistries, with low errors. It was also found that the ECMs tend to perform better in dynamic current profiles compared to non-dynamic ones. Overall, the best-performed model for LFP and NCA was the 1RC with hysteresis ECM, while the most suited model for NMC and LMO was the 1RC ECM. The results from this study showed that different ECMs would be suited for different Li-ion battery chemistries, which should be an important factor to be considered in real-world battery and BMS applications.

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