Automotive Lead-Acid Battery Supplied DC-DC Power Converter with Variable Output Voltage

2020 ◽  
Author(s):  
Tibor G. Fodor ◽  
Helga M. Silaghi ◽  
Alexandru M. Silaghi
Keyword(s):  
Output Voltage ◽  
Power Converter ◽  
Lead Acid Battery ◽  
Dc Power ◽  
Lead Acid

scholarly journals Comparative Study of Thyristor vs IGBT Based AC-DC Power Converter

2018 ◽  
Vol 17 (3) ◽  
pp. 89-102
Author(s):  
Md. Saiful Islam ◽  
Md. Rifat-Ul-Karim Shovon ◽  
Abdul Goffar Khan
Keyword(s):  
Comparative Study ◽  
Pulse Width ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Power Converter ◽  
Wave Shape ◽  
Average Output ◽  
Dc Power ◽  
Voltage Wave ◽  
The Relationship

This paper presents a comparative study of the application of Thyristor versus IGBT in AC-DC controlled power converter. Both simulation and practical experiment have been carried out to test the relationship between the average output voltage (Vdc) with firing angle (α, for Thyristor) and triggering pulse width (, for IGBT). Also the total harmonic distortion (THD) has been observed in both the cases. It is observed that IGBT based power converter introduces more harmonics in the system, in spite of more symmetrical output voltage wave shape.

scholarly journals Kontrol Kecepatan Motor Brushless DC Menggunakan Double Boost Converter Berbasis PI

CYCLOTRON ◽  
2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Gita Arya Pratama ◽  
M. Krisna Ramadhani Ananta ◽  
Rio Winas Setia Budi ◽  
Belly Yan Dewantara ◽  
Iradiratu K
Keyword(s):  
Output Voltage ◽  
Power Converter ◽  
Pi Controller ◽  
Boost Converter ◽  
Bldc Motor ◽  
Brushless Dc ◽  
Dc Power ◽  
Output Load ◽  
Motor Load ◽  
Converter Design

Abstrak— Paper ini menampilkan desain double boost converter yang mempunyai kemampuan menggandakan tegangan dua kali lipat berturut  turut beban DC yang menghasilkan tegangan output tambahan atau cadangan suplai pada beban. Pada umumnya double boost converter ini adalah konverter daya DC to Dc meningkatkan tegangan dari input (pasokan) ke output (beban) di desain menunjukkan bahwa dengan inputan sumber AC yang di searahkan terlebih dulu dengan converter penyearah berfungsi untuk mengatur kecepatan motor BLDC. Untuk pengontrolan pada beban motor menggunakan PI controller ( Proportional Integrator) dimana  parameter PI controller diperoleh dari trial eror. PI controller juga berfungsi memperbaiki gelombang keluaran dan kecepatan motor BLDC. Kata kunci : Motor BLDC, Double Boost Converter, PI controller. Abstract— This paper features a double boost converter design that has the ability to double the successive voltage in a DC load which results in an additional output voltage or supply reserve at load. In general, this double boost converter is a DC to Dc power converter increasing the voltage from input (supply) to output (load) in the design shows that the input AC source is aligned first with the rectifier converter to regulate the speed of the BLDC motor. To control the motor load using a PI controller (Proportional Integrator) where the PI controller parameter is obtained from the trial error. The PI controller also functions to improve the wave output and speed of the BLDC motor.

Buck Converter Control for Lead Acid Battery Charger using Peak Current Mode

2017 ◽  
Vol 8 (2) ◽  
pp. 686
Author(s):  
Asep Nugroho ◽  
Estiko Rijanto ◽  
Latif Rozaqi
Keyword(s):  
Control System ◽  
Output Voltage ◽  
Buck Converter ◽  
Control Mode ◽  
Lead Acid Battery ◽  
Battery Charger ◽  
Peak Current ◽  
Nominal Model ◽  
Load Variation ◽  
Lead Acid

DC-DC buck converters are used for battery chargers in many applications including renewable energy sources, inverters, electric vehicles and robots. In this paper a buck converter was built and its controller was developed using peak current control mode for current loop and phase lag for voltage loop. This paper proposes a formulation of plant disturbance due to load variation to obtain a nominal model based on small signal approach. The controller was derived analytically based on the nominal model. Experiment results show that the buck control system functions well in regulating the output voltage. During the start up without any load it can reduce input voltage from 300 V to output voltage of 133.9 V in 19.3 ms. The developed controller can maintain the output voltage under load variation from no load to sudden load of 0.26 A. When it was implemented to charge a lead acid battery string, constant current of 3.36 A was charged in the first 173 minutes followed by constant voltage of 134.7 V until the end of charging at time 483 minutes. Thus, the developed control system of lead acid battery charger works well.

scholarly journals Design of a Continuous Signal Generator Based on Sliding Mode Control of Three-Phase AC-DC Power Converters

Energies ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4468
Author(s):  
Alsmadi ◽  
Chairez ◽  
Utkin
Keyword(s):  
Sliding Mode Control ◽  
Output Voltage ◽  
Sliding Mode ◽  
Power Converter ◽  
Signal Generator ◽  
Time Varying ◽  
Continuous Signal ◽  
Mode Control ◽  
Dc Power ◽  
Three Phase

In recent years, hundreds of technical papers have been published which describe the use of sliding mode control (SMC) techniques for power electronic equipment and electrical drives. SMC with discontinuous control actions has the potential to circumvent parameter variation effects with low implementation complexity. The problem of controlling time-varying DC loads has been studied in literature if three-phase input voltage sources are available. The conventional approach implies the design of a three-phase AC/DC converter with a constant output voltage. Then, an additional DC/DC converter is utilized as an additional stage in the output of the converter to generate the required voltage for the load. A controllable AC/DC converter is always used to have a high quality of the consumed power. The aim of this study is to design a controlled continuous signal generator based on the sliding mode control of a three-phase AC-DC power converter, which yields the production of continuous variations of the output DC voltage. A sliding mode current tracking system is designed with reference phase currents proportional to the source voltage. The proportionality time-varying gain is selected such that the output voltage is equal to the desired time function. The proposed new topology also offers the capability to get rid of the additional DC/DC power converter and produces the desired time-varying control function in the output of AC/DC power converter. The effectiveness of the proposed control design is demonstrated through a wide range of MATLAB/Simulink simulations.

scholarly journals Analysis of overcharging characteristics of a new type lithium iron phosphate battery for dc system of substation

2021 ◽  
Vol 248 ◽  
pp. 01066
Author(s):  
Liu Meijie ◽  
Gao Kai ◽  
Li Zhongwei ◽  
Qiu Peng ◽  
Meng Zhen
Keyword(s):  
Power System ◽  
Power Supply ◽  
Lithium Iron Phosphate ◽  
Rapid Development ◽  
Iron Phosphate ◽  
Operating Conditions ◽  
Lead Acid Battery ◽  
Dc Power ◽  
Emergency Power ◽  
Lead Acid

In recent years, the number of DC power system in substation has been increasing. And the technical transformation of DC power system, fault maintenance and other workload is also on the rise, therefore dc emergency power emerged. The lead-acid battery is usually adopted for traditional DC emergency power supply. The disadvantage of lead-acid battery in volume and quality makes it difficult to realize the portability and mobility of dc emergency power. Lithium iron phosphate battery technology is the frontier technology in the rapid development period. However, the characteristics are not studied clearly. This paper studies the characteristics of lithium iron phosphate battery in different ambient temperature, operating conditions, and current of charge and discharge, analyses and summarizes the characteristics of battery charge and discharge, so as to improve the maintenance of station DC power supply system and the reliability of power supply network.

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