Comparison of two high frequency transformer designs to achieve zero voltage switching in a 311/100 v 1 kW phase-shifted full-bridge DC-DC converter

Toni,; Wijaya, F. Danang; Firmansyah, Eka

doi:10.1109/iciteed.2016.7863280

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…The value of the maximum deadtime can be determined by using equation (1). Deadtime value was affected by the resonant frequency (W r ) expressed in equation (2) [13], [16], [21].…”

Section: Determining Of the Maximum Deadtimementioning

confidence: 99%

“…In practice, the value of each C oss need to be exceeded by a factor of 4/3 to accommodate the increase in capacitance due to high voltage operation [13], [16], [21]. The total value of C r is shown in equation (3).…”

Section: Determining the Minimum Value Of Leakage Inductancementioning

confidence: 99%

“…In order to achieve ZVS condition, the energy stored in the inductor must be greater than or equal to the amount of energy stored in two MOSFET parasitic capacitances related [13], [16], [21]. The equation for calculating the minimum current value can be determined by the following equation.…”

Section: The Minimum Value Of the Transformer Primary Currentmentioning

confidence: 99%

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Design of Full-bridge DC-DC Converter 311/100 V 1kW with PSPWM Method to Get ZVS Condition

Prasetya

Wijaya

Firmansyah

2017

IJPEDS

Self Cite

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Enhancing the switching frequency can increase the power density of a fullbridge dc-dc converter. However, power loss in switches will increase due to the intersection of voltage and current during turn-on and turn-off transition process. The switching power loss can be reduced by making the condition of zero voltage switching (ZVS) which in this study is obtained by using the phase-shifted PWM method. Achieving this condition requires appropriate parameters such as deadtime, leakage inductance, and the primary current of transformer in sufficient value. In this study, ZVS is achieved when the transformer leakage inductance of 14.12 μH is added with external inductance of 24.29 μH which is installed in series with transformer and when the primary current of transformer is more than 1.289 A. Keyword: DC-DC converter High frequency transformer Leakage inductance Paracitic capacitance Zero voltage switching Copyright © 2017 Institute of Advanced Engineering and Science.All rights reserved. Corresponding Author:Eka Firmansyah, Department of Electrical Engineering and Information Technology, Faculty of Engineering, Universitas Gadjah Mada, Indonesia. Email: eka.firmansyah@gmail.com INTRODUCTIONDC power supply is increasingly being used for various applications such as battery charger (for rechargeable battery in electric vehicles, electronic equipments, energy storage systems in photo-voltaic and wind power plant), induction heating, welding machine, and other applications. DC power supply used and developed today is a switch mode power supply (SMPS). SMPS has been chosen to replace linear power supply because of its higher efficiency, smaller and lighter size [1]- [9].The main part of dc power supply is a dc-dc converter which has various kinds of topology. One of them is full-bridge topology which can be applied to a higher power than the other topologies (≥ 500 W). This topology is development of a buck converter topology with four electronic switches and insulated transformer [10]- [14]. On the development, the converter technology is always strived to improve efficiency as high as possible and with size as small as possible. Some ways to achieve these conditions are developing from hard switching to soft switching method, applying high frequency and selecting component values accordingly [4], [8], [9], [15].One of the frequently used soft switching method is phase-shifted PWM. The aim of that method is to get zero voltage switching (ZVS) condition, at the time of the switch turn-on, the switch will be active when the voltage value is zero. So that the power loss in the switching process can be minimized [2], [16], [17]. The parameters that must be satisfied in order to achieve the ZVS condition are leakage inductance in a sufficient value, deadtime as small as possible and current which is greater than the value required. Leakage inductance value is very dependent on the high-frequency transformer design. Deadtime value is determined by considering the value of rise time, fall time, and delay time of the gate-dr...

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“…The value of the maximum deadtime can be determined by using equation (1). Deadtime value was affected by the resonant frequency (W r ) expressed in equation (2) [13], [16], [21].…”

Section: Determining Of the Maximum Deadtimementioning

confidence: 99%

Section: Determining the Minimum Value Of Leakage Inductancementioning

confidence: 99%

See 1 more Smart Citation

Design of Full-bridge DC-DC Converter 311/100 V 1kW with PSPWM Method to Get ZVS Condition

Prasetya

Wijaya

Firmansyah

2017

IJPEDS

Self Cite

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Real time online efficiency optimization of buck converter against variable voltage and load change

Chen

Tang

et al. 2022

Circuit Theory & Apps

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In order to address the issue of keeping the converter operating at a high efficiency level under different conditions, this paper suggests an adaptive step frequency adjustment online optimization search algorithm, which achieves the goal of fast adjustment and real‐time response to parameter changes. The converter is quickly adjusted to operate at a high efficiency by sampling the input and output current values and modulating the switching frequency utilizing the algorithm. Additionally, the algorithm shifts between two working models to finish the search for the best switching frequency while the converter's characteristics do not change. Moreover, it accomplishes the objective of instantly resynchronizing the algorithm after a change in the converter's parameters and starting a search for the best switching frequency in the new converter state. For various input voltages and output loads, the operating principle, optimal frequency, and efficiency are given. In addition, the principle analysis when the converter parameters are changed is provided, and the choice of two algorithm models is compared. Finally, a prototype buck converter with adjustable input voltage and load is constructed to test the algorithm's efficiency.

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Primary Double Winding Coupling DC Transformer for DC Micro-Grid Applications

Zheng

Pan²,

Liu

et al. 2022

J. Electr. Eng. Technol.

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Comparison of two high frequency transformer designs to achieve zero voltage switching in a 311/100 v 1 kW phase-shifted full-bridge DC-DC converter

Cited by 4 publications

References 5 publications

Design of Full-bridge DC-DC Converter 311/100 V 1kW with PSPWM Method to Get ZVS Condition

Design of Full-bridge DC-DC Converter 311/100 V 1kW with PSPWM Method to Get ZVS Condition

Real time online efficiency optimization of buck converter against variable voltage and load change

Primary Double Winding Coupling DC Transformer for DC Micro-Grid Applications

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