Hysteresis-Current-Controlled Buck Converter Suitable for Li-Ion Battery Charger

Yang, F.; Chen, Chih‐Chiang; Chen, Jiann‐Jong; Hwang, Yuh‐Shyan; Lee, Wen-Ta

doi:10.1109/icccas.2006.285232

Cited by 30 publications

(12 citation statements)

References 3 publications

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“…For a standard 12-bit ADC with 3.3 V as V ref and H = 0.1 (since V oc ≈ 20 V), the digital value corresponding to V MPP is about 2000 (the full scale voltage being 2 12 = 4096). For different solar panels, the sensor gain is often changed to reflect a different V oc and so (29) holds.…”

Section: External Limitations On the Battery Currentmentioning

confidence: 99%

Universal Current-Mode Control Schemes to Charge Li-Ion Batteries Under DC/PV Source

Biswas

Huang

Vaidya

et al. 2016

IEEE Trans. Circuits Syst. I

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A pair of universal current mode control schemes for charging a Li-ion battery for mobile applications are discussed in this paper. The peak-current mode control schemes, based on a single control loop, is universal because it is designed with a single-stage buck charger for both a conventional wall adapter dc source as well as a solar photovoltaic (PV) module of comparable specifications. The charging schemes remove the need for an extra MPPT (maximum power point tracking) power converter stage. This control scheme is non-linear and incorporates all possible scenarios: mode of operation of a battery, current charging rate and power characteristic of input source. The algorithm uses need-based MPPT and ensures minimal battery discharge, and also uses minimum number of sense variables in the circuit. The methods differ in the way MPPT is implemented: perturb and observe (P&O) and fractional open circuit voltage. Simulation results demonstrating battery charge profile, validity of the algorithm under varying insolation conditions and platform workloads are presented, along with a discussion of the trade-offs of the two methods. Proof-of-concept hardware results are also provided.

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Section: External Limitations On the Battery Currentmentioning

confidence: 99%

Universal Current-Mode Control Schemes to Charge Li-Ion Batteries Under DC/PV Source

Biswas

Huang

Vaidya

et al. 2016

IEEE Trans. Circuits Syst. I

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“…Rechargeable battery life is relation not only charger times [3,4,5,12,13], But overcharging control and charger way [1,2,6,10,11,16]. We must submit some battery charger with best efficiency [1,2,15,[5][6][7][8][9][10]18,19,20] and more safe from damage of overcharging or under charging. The life cycles of Li-Ion batteries are simply is influenced by overcharge or undercharge, because overcharge can damage the physical elements of the battery and undercharge can decrease the energy capacity of the battery.…”

Section: Introductionmentioning

confidence: 99%

“…The life cycles of Li-Ion batteries are simply is influenced by overcharge or undercharge, because overcharge can damage the physical elements of the battery and undercharge can decrease the energy capacity of the battery. The Charger controller has duty of creating a feasible electro power for rechargeable battery and it must identify the point that is stopping charging to avoid rechargeable battery explosion [1,2,6,9,10]. The Constant-Current and Constant-Voltage (CC-CV) is used most broadly [1][2][3][4]6,7,9,10,11,13] but its function is cannot give the customer all of their need.…”

Section: Introductionmentioning

confidence: 99%

<title>Fuzzy-control-based five-step Li-ion battery charger by using AC impedance technique</title>

et al. 2012

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In This paper the previous Li-Ion battery charger techniques are reviewed and compared and the new fuzzy logic battery charging method which is proposed to optimize and improve the battery charger efficiently. According to results of comparison, using the fuzzy control charging system can shorten the charging time with higher efficiency and lower temperature rise. Additionally, we have used optimal Li-ion battery charging frequency by using AC impedance technique which means if the battery is charged by the optimal charging frequency fZmin, that obtain from Bode Plot of the Li-ion battery, the charging time and charging efficiency will improve. Thus using the switching frequency (fZmin) of the battery charger and the fuzzy logic control on the same system can optimize the performance on the charging process. According to the experimental results, the proposed charger can charge the Li-ion batteries with higher efficiency 97.16%, lower temperature rise1.513degree celosias, fast charging period around 50.43 minute and long life cycle. The results in this paper are presented by using MATLAB and dsPIC30F2020 is used as controller applying designed fuzzy logic inside.

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“…The charger is also based on the linear regulator which means the efficiency is decided by the voltage drop between input and output. In [8], a switching converter is proposed as a battery charger. The efficiency of the switching converter is independent of the voltage drop, yet the switching converter may not be suitable for the applications with back-end circuits that are sensitive to the switching noise.…”

Section: Introductionmentioning

confidence: 99%

A new single-stage AC-DC converter for medical implant devices

Chu

Artan

Czarkowski

et al. 2013

2013 IEEE International Symposium on Circuits and Systems (ISCAS2013)

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Abstract-A single-stage buck-type AC-DC converter is proposed for medical implants to achieve high efficiency. The proposed structure combines two traditional stages of the three-stage power path for medical implants and eliminates a MOSFET and a filter capacitor to improve the efficiency. The proposed circuit converts 40 V pp coil voltage into a DC output voltage of 4.2 V. The stability analysis of the circuit is also presented. Load currents between 1 mA to 100 mA are supported. The efficiency of the proposed circuit is 81.9%.

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Hysteresis-Current-Controlled Buck Converter Suitable for Li-Ion Battery Charger

Cited by 30 publications

References 3 publications

Universal Current-Mode Control Schemes to Charge Li-Ion Batteries Under DC/PV Source

Universal Current-Mode Control Schemes to Charge Li-Ion Batteries Under DC/PV Source

<title>Fuzzy-control-based five-step Li-ion battery charger by using AC impedance technique</title>

A new single-stage AC-DC converter for medical implant devices

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