Double modulation control scheme for a DC/DC converter applied to a battery charger

Belloumi, Hamed; Kourda, Ferid

doi:10.1049/iet-pel.2013.0686

Cited by 7 publications

(4 citation statements)

References 20 publications

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“…To address this problem, a self-tuning method is proposed which has fast dynamics and is not sensitive to the tolerances. Recently, this method has been utilized for power and frequency tuning of wireless charging of EVs using inductive power transfer (IPT) technology, DC-DC converters and various battery chargers [3,[14][15][16][17]. Moreover, in self-tuning methods, all the switching methods such as pulse width modulation (PWM), pulse density modulation (PDM) and the phase-shift control method can be implemented.…”

Section: Introductionmentioning

confidence: 99%

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Dual-Active Bridge Series Resonant Electric Vehicle Charger: A Self-Tuning Method

et al. 2020

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This paper presents a new self-tuning loop for a bidirectional dual-active bridge (DAB) series resonant converter (SRC). For different loading conditions, the two active bridges can be controlled with a minimum time displacement between them to assure zero voltage switching (ZVS) and minimum circulation current conditions. The tuning loop can instantly reverse the power direction with a fast dynamics. Moreover, the tuning loop is not sensitive to series resonant tank tolerances and deviations, which makes it a robust solution for power tuning of the SRCs. For simplicity, the power is controlled based on the power-frequency control method with a fixed time displacement between the active bridges. The main design criteria of the bidirectional SRC are the time displacement, operating frequency bandwidth, and the minimum and maximum power, which are simply derived and formulated based on the self-tuning loop’s parameters. Based on the parameters of the tuning loop, a simplified power equation and power control method is proposed for DAB-SRCs. The proposed control method is simulated in static and dynamic conditions for different loadings. The analysis and simulation results show the effectiveness of the new tuning method.

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Section: Introductionmentioning

confidence: 99%

“…However, in the available researches, the bidirectional capability of the SRCs is not considered in the self-tuning method. Moreover, the formulations and analysis of the self-tuning are derived for an ohmic load [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Dual-Active Bridge Series Resonant Electric Vehicle Charger: A Self-Tuning Method

et al. 2020

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“…It is widely applied in various applications such as the battery charger, the light‐emitting diode (LED) driver, and power supply. The relevant research studies have been continuously made, including the topology evolution [1], control strategy [2, 3], parameter design [4], and bidirectional operation [5]. Despite outstanding performances achieved by these literatures, the contradiction between the voltage gain range and conversion efficiency still exists for the LLC converter.…”

Section: Introductionmentioning

confidence: 99%

Dual‐transformer soft‐switching DC–DC resonant converter with multiple resonant elements

Wang

Han

Yang

et al. 2018

IET Power Electronics

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A novel dual-transformer DC-DC converter with multiple resonant elements is proposed. Owing to the multi-resonant feature, the converter is able to achieve a wide DC voltage gain range through the proper selection of resonant parameters. The operating frequency is restricted within a narrow scope. The potential high-frequency losses are avoided, which apparently contributes to efficiency improvement. Besides, since the proposed converter contains more resonant frequencies, it is possible to additionally transmit the third-order active power to the load. All the power switches have realised the turn-on soft-switching, while the diodes obtain the soft-switching or quasi-soft-switching for both the turn-on and turn-off periods. To verify the theoretical analyses, a 500 W prototype is established in the laboratory. The experimental results demonstrate that the proposed converter can maintain relatively high efficiency (∼95%) among a wide load range. The highest efficiency reaches 95.4% at 300 W.

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“…High frequencies are desirable since they result in smaller and lighter magnetic components and faster transient responses [3, 4]. In consequence of these features and the ever increasing demand for higher power density, higher efficiency, and lower electromagnetic interference, the resonant converters are currently of widespread interest and used in many industrial applications such as power supply for radio‐frequency sources [5], induction heating [6], light‐emitting diode driver [7], dielectric barrier discharge [8], and battery charger for electric vehicles [9].…”

Section: Introductionmentioning

confidence: 99%

Hybrid control of the dc–dc SRC operating below resonance

Afshang

Tahami

Molla‐Ahmadian

2017

IET Power Electronics

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Control and stabilisation of the resonant converters are essential problems in power electronics. The conventional model of the dc-dc series resonant converter (SRC) is derived using the sinusoidal approximation and generalised averaging followed by linearisation about an operating point. This model involves considerable approximation and is not applicable for large variation of load and supply voltage. The authors have already proposed a direct piece-wise affine (DPWA) modelling and control approach for the SRC that operates above resonant frequency. However, the DPWA technique is not applicable to an SRC that operates below resonance because of the presence of harmonics. In this study, a dynamic voltage-controlled oscillator (VCO) is introduced, so that the overall system consisting of the proposed VCO following by the SRC is modelled as a PWA system. Then, a hybrid controller is designed in order to regulate the dc output voltage of the SRC operating below resonance. Also, the stability analysis of the closed-loop system is presented in the form of linear matrix inequalities. A prototype of the SRC is constructed and the proposed hybrid controller is implemented on a digital signal processor (DSP) core. The simulation and experimental results show the effectiveness of this modelling and control approach.

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Double modulation control scheme for a DC/DC converter applied to a battery charger

Cited by 7 publications

References 20 publications

Dual-Active Bridge Series Resonant Electric Vehicle Charger: A Self-Tuning Method

Dual-Active Bridge Series Resonant Electric Vehicle Charger: A Self-Tuning Method

Dual‐transformer soft‐switching DC–DC resonant converter with multiple resonant elements

Hybrid control of the dc–dc SRC operating below resonance

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