scholarly journals Improving the Quality of the Underwater Robot’s Contactless Battery Charging System

2021 ◽  
Vol 2096 (1) ◽  
pp. 012107
Author(s):  
V A Gerasimov ◽  
A V Komlev ◽  
A Yu Filozhenko
Keyword(s):  
Power Transformer ◽  
Resonant Circuit ◽  
Transmitted Power ◽  
Battery Charging ◽  
Charging System ◽  
Power Switches ◽  
Scale Experiment ◽  
Switching Mode ◽  
Secondary Side

Abstract A special feature of the contactless battery charging system of an autonomous underwater robot is the use of a transformer with separating primary and secondary windings. As a result, a non-magnetic gap arises, which leads to the need to increase the primary current and the output current of the autonomous inverter. One of the ways to improve the quality of the system is the use of a resonant circuit at the inverter output in combination with the "soft switching" mode of its power switches. The use of resonance on the transformer secondary side also allows you to equalize the current loads of the primary and secondary windings. In this way, a minimum of losses in the inverter is achieved and the power transformer of the system is optimized. This allows you to reduce the size of the system while maintaining the transmitted power, or increase the transmitted power while maintaining the dimensions. The problem solved by using mathematical modelling with verification of the solution adequacy in a full-scale experiment.

scholarly journals СРЕДСТВА ПОВЫШЕНИЯ ЭФФЕКТИВНОСТИ СИСТЕМЫ БЕСКОНТАКТНОГО ЗАРЯДА АККУМУЛЯТОРНЫХ БАТАРЕЙ АВТОНОМНОГО ПОДВОДНОГО АППАРАТА

2020 ◽  
Author(s):  
V.A. Gerasimov ◽  
A.V. Komlev ◽  
A.Yu. Filozhenko
Keyword(s):  
Field Experiments ◽  
Autonomous Underwater Vehicle ◽  
Necessary Condition ◽  
Resonant Circuit ◽  
Battery Charging ◽  
Charging System ◽  
Charging Time ◽  
Power Switches ◽  
Switching Mode ◽  
The Mathematical Model

Необходимым условием эффективности системы бесконтактного заряда аккумуляторных батарей при эксплуатации автономного подводного робота служит выполнение следующих двух требований: сочетание резонансного контура на выходе инвертора и режима мягкого переключения силовых ключей инвертора, применение резонанса на вторичной стороне трансформатора. Для решения задачи, связанной с данным условием, разработана математическая модель системы с реко- мендациями по выбору параметров резонансных цепей. Таким путем достигаются: минимум потерь мощности в инверторе, а также уменьшение нагрева его элементов и, как следствие, повышение общей надежности и минимум времени полного заряда аккумуляторных батарей. С помощью действующего образца системы проведены натурные эксперименты, подтверждающие результаты исследований.The necessary condition for the contactless battery charging system to be effective during the operation of the autonomous underwater vehicle it is mounted on is fulfilling the two following requirements: combination of the resonant circuit on the inverter output and the soft switching mode of the power switches attainment of a condition of resonance on the transformer secondary winding. To solve the problem associated with this condition, the mathematical model of the system was developed with recommendations for parameters choice of resonant circuits. This way, both power losses in the inverter and its element temperature are minimized. This enhancement improves the overall reliability and allows achieving minimal battery charging time. Some field experiments using an operational prototype of the system were carried out, proving the research results.

scholarly journals Resonant Converter with Voltage-Doubler Rectifier or Full-Bridge Rectifier for Wide-Output Voltage and High-Power Applications

Electronics ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 3 ◽  
Author(s):  
Bor-Ren Lin ◽  
Guan-Hong Lin ◽  
Aries Jian
Keyword(s):  
Output Voltage ◽  
Low Voltage ◽  
Resonant Circuit ◽  
Resonant Converter ◽  
Power Devices ◽  
Voltage Output ◽  
Power Switches ◽  
Bridge Rectifier ◽  
Voltage Doubler ◽  
Secondary Side

This paper presents a resonant converter with the benefits of wide output voltage, wide soft switching characteristics for power devices and high circuit efficiency. Since the series resonant circuit is adopted on the primary side, the power switches are turned on under zero voltage switching and power diodes on the secondary side can be turned off under zero current switching. To overcome the drawback of narrow voltage operation range in the conventional resonant converter, full-bridge rectifier and voltage-doubler rectifier topologies are employed on the secondary side for low-voltage output and high-voltage output applications. Therefore, the voltage rating of power devices on the secondary side is clamped at output voltage, rather than two times output voltage, in the center-tapped rectifier circuit. Synchronous power switches are used on the secondary side to further reduce the conduction losses so that the circuit efficiency can be further improved. To verify the theoretical analysis and circuit performance, a laboratory prototype with 1 kW rated power was built and tested.

Peeling, Grating, Chipping, Grinding and Charging Machine: An Innovation

2012 ◽  
Vol 3 (1) ◽  
Author(s):  
Romeo G. Seguban
Keyword(s):  
Operating Time ◽  
The Other ◽  
Battery Charging ◽  
Quality Of Work ◽  
Charging System ◽  
Charging Time ◽  
Economical Aspect

This invention relates to an apparatus for peeling, grating and chipping fruits or vegetables, sharpen knife and charging battery. It is a multifunctional apparatus which can operate five activities simultaneously or one after the other. The combination of the five functions differentiates this innovation from other available machines in the market. The fusion of the five functions has contributed to the reduction of operating time. This study concentrated in the designing and constructing a fruit peeler, grater, chipper, sharpener and charger machines; provide an inexpensive but a promising apparatus and efficient battery charging system; evaluate the machine in terms of its performance, acceptability, functionality, efficiency, workability, and affordability. Furthermore, this study also determines the functionality of the project along charging time of the battery; economical aspect of the project its speed, volume of work, and quality of work.   Keywords - Peeler, grater, chipper, grinder, charger, machine

Implementation of Fuzzy Logic Control on Battery Charging System

2019 ◽  
Vol 3 (1) ◽  
pp. 118-126 ◽  
Author(s):  
Prihangkasa Yudhiyantoro
Keyword(s):  
Complex System ◽  
Fuzzy Logic ◽  
Fuzzy Logic Control ◽  
Expert Knowledge ◽  
Experimental Result ◽  
Rule Base ◽  
Battery Charging ◽  
Charging System ◽  
Logic Control ◽  
Charging Control

This paper presents the implementation fuzzy logic control on the battery charging system. To control the charging process is a complex system due to the exponential relationship between the charging voltage, charging current and the charging time. The effective of charging process controller is needed to maintain the charging process. Because if the charging process cannot under control, it can reduce the cycle life of the battery and it can damage the battery as well. In order to get charging control effectively, the Fuzzy Logic Control (FLC) for a Valve Regulated Lead-Acid Battery (VRLA) Charger is being embedded in the charging system unit. One of the advantages of using FLC beside the PID controller is the fact that, we don’t need a mathematical model and several parameters of coefficient charge and discharge to software implementation in this complex system. The research is started by the hardware development where the charging method and the combination of the battery charging system itself to prepare, then the study of the fuzzy logic controller in the relation of the charging control, and the determination of the parameter for the charging unit will be carefully investigated. Through the experimental result and from the expert knowledge, that is very helpful for tuning of the  embership function and the rule base of the fuzzy controller.

Solar powered battery charging scheme for light electric vehicles (LEVs)

2021 ◽  
Vol 22 (1) ◽  
pp. 101-111
Author(s):  
Kamal Singh ◽  
Anjanee Kumar Mishra ◽  
Bhim Singh ◽  
Kuldeep Sahay
Keyword(s):  
Electric Vehicles ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Battery Charging ◽  
Charging System ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Solar Powered ◽  
Power Point ◽  
Conduction Mode

Abstract This work is targeted to design an economical and self-reliant solar-powered battery charging scheme for light electric vehicles (LEV’s). The single-ended primary inductance converter (SEPIC) is utilized to enhance the performance of solar power and battery charging at various solar irradiances. Various unique attributes of a SEPIC converter offer the effective charging arrangement for a self-reliant off-board charging system. Further, the continuous conduction mode (CCM) function of the converter minimizes the elementary stress and keeps to maintain the minimum ripples in solar output parameters. A novel maximum power point tracking (MPPT) approach executed in the designed system requires only the battery current to track the maximum power point (MPP) at various weather situations. Both the simulated and real-time behaviors of the developed scheme are examined utilizing a battery pack of 24 V and 100 Ah ratings. These responses verify the appropriateness of the designed system for an efficient off-board charging system for LEV’s.

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