A new ZVS full-bridge DC-DC converter for battery charging with reduced losses over full-load range

Kishore, K. V. Ravi; Wang, B. F.; Kandasamy, Nandha Kumar; So, P.L.

doi:10.1109/indicon.2015.7443825

Cited by 9 publications

(6 citation statements)

References 11 publications

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“…No B2G operation discussed [17], [18], [20][21][22][23][24][25], [27], [29][30][31][32][33][34] Only Grid tied operation feasible [17][18][19][20][21][22][23][24][25][26][27], [30][31][32][33][34] Requires additional PFC circuit at front-end for functioning as EV charger [17][18][19], [22], [26][27][28], [31] Proposed topology…”

Section: Capable Of Standalone Operationmentioning

confidence: 99%

“…Though the proposed topology achieves soft switching without any additional component, the topology involves significant control and design complexity. A zero‐voltage switching‐based isolated DC/DC FBC is proposed in [20]. However, the circuit needs an additional front‐end 1‐ɸ AC/DC PFC boost converter and electromagnetic interference filter for functioning as an EV charger.…”

Section: Introductionmentioning

confidence: 99%

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A novel tri‐capacity battery charger topology for low‐voltage DC residential nanogrid

Selvanathan

Uma

2021

IET Renewable Power Gen

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This study communicates a single‐stage, 3‐ɸ, rooftop solar photo voltaic (PV) and grid compatible tri‐capacity battery charger (TBC) topology for a home‐based low voltage direct current nanogrid (LVDC NG). The proposed architecture performs power factor correction drawing sinusoidal grid currents at unity power factor, single‐stage rectification of 3‐ɸ grid voltages and constant current mode battery charging simultaneously. The employed control scheme is experimentally validated on a 120 W scaled‐down hardware prototype energising three lead‐acid‐based battery energy storage system (BESS) of nominal voltages 48/36/24 V and capacities 28/21/14 Ah, respectively. The obtained results affirm the effective operation of the LVDC NG under islanded/grid‐to‐battery and battery‐to‐grid modes. Further, an extension to the proposed work where the TBC functions charging a single BESS is put forward and validated adding merit to the proposed work.

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Section: Capable Of Standalone Operationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel tri‐capacity battery charger topology for low‐voltage DC residential nanogrid

Selvanathan

Uma

2021

IET Renewable Power Gen

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“…Next, the range of duty cycle (Dmin and Dmax) is calculate to ensure the minimum and maximum duty cycle where the soft-switching occur. The minimum and maximum duty cycle can be expressed as follows: (14) (15) where the minimum duty cycle occurs when the input voltage in its maximum. By relating the inductance and capacitance snubbers with the resonant interval times where it can be suggested less than some fraction (0 < k < 1) of the switching period Ts.…”

Section: Design Guideline Of Ppssive Lossless Ssbber Circuitmentioning

confidence: 99%

“…This is due to the overlapping of current and voltage in semiconductor devices. Thus, in order to reduce the switching loss in converters circuit, soft-switching technique might be applied [12]- [15]. Passive lossless snubber is the effective technique for the softswitching implementation in order to tackle this issue due to simple circuit structure to be considered.…”

Section: Introductionmentioning

confidence: 99%

4-level capacitor-clamped boost converter with hard-switching and soft-switching implementations

Kasiran¹,

Ponniran²,

Bakar³

et al. 2019

IJPEDS

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This paper presents parameters analysis of 4-level capacitor-clamped boost converter with hard-switching and soft-switching implementation. Principally, by considering the selected circuit structure of the 4-level capacitor-clamped boost converter and appropriate pulse width modulation (PWM) switching strategy, the overall converter volume able to be reduced. Specifically, phase-shifted of 120° of each switching signal is applied in the 4-level capacitor-clamped boost converter in order to increase the inductor current ripple frequency, thus the charging and discharging times of the inductor is reduced. Besides, volume of converters is greatly reduced if very high switching frequency is considered. However, it causes increasing of semiconductor losses and consequently the converter efficiency is affected. The results show that the efficiency of 2-level conventional boost converter and 4-level capacitor-clamped boost converter are 98.59% and 97.67%, respectively in hard-switching technique, and 99.31% and 98.15%, respectively in soft-switching technique. Therefore, by applying soft-switching technique, switching loss of the semiconductor devices is greatly minimized although high switching frequency is applied. In this study, passive lossless snubber circuit is selected for the soft-switching implementation in the 4-level capacitor-clamped boost converter. Based on the simulation results, the switching loss is approximately eliminated by applying soft-switching technique compared to the hard-switching technique implementation.

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“…In other words, ZVS is still difficult to achieve with the hysteresis switch when the magnetic current is reduced [21]. In addition, the ZVS switching hysteresis can also be achieved using auxiliary circuits [22][23][24][25]. Under heavy loads, the ZVS condition is mainly determined by the energy stored in the leakage inductance; the auxiliary inductor does not produce a large current, and the conduction loss can be reduced.…”

Section: Introductionmentioning

confidence: 99%

An Interleaved Phase-Shift Full-Bridge Converter with Dynamic Dead Time Control for Server Power Applications

Lee

Chen

2021

Energies

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A compact and high-efficiency power converter is the main business of today’s power industry for server power applications. To achieve high efficiency with a low-output ripple, an interleaved phase-shift full-bridge (PSFB) converter is designed, built, and tested for server power applications in this study. In this paper, dynamic dead time control is proposed to reduce the switching loss in the light load condition. The proposed technique reduces the turn-off switching loss and allows a wide range of zero-voltage switching. Moreover, the current ripple of the output inductor can be reduced with the interleaved operation. To verify the theoretical analysis, the proposed PSFB converter is simulated, and a 3 kW prototype is constructed. The experimental results confirm that the conversion efficiency is as high as 97.2% at the rated power of 3 kW and 92.95% at the light load of 300 W. The experimental transient waveforms demonstrated that the voltage spike or drop is less than 2 V in the fast-fluctuating load conditions from 0% load to 60% load and 40% load to 100% load.

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A new ZVS full-bridge DC-DC converter for battery charging with reduced losses over full-load range

Cited by 9 publications

References 11 publications

A novel tri‐capacity battery charger topology for low‐voltage DC residential nanogrid

A novel tri‐capacity battery charger topology for low‐voltage DC residential nanogrid

4-level capacitor-clamped boost converter with hard-switching and soft-switching implementations

An Interleaved Phase-Shift Full-Bridge Converter with Dynamic Dead Time Control for Server Power Applications

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