Interleaved Boost Converter with ZVT-ZCT for the Main Switches and ZCS for the Auxiliary Switch

Hwu, K. I.; Shieh, Jenn‐Jong; Jiang, Wen-Zhuang

doi:10.3390/app10062033

Cited by 11 publications

(4 citation statements)

References 42 publications

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“…The Zero Voltage Transition (ZVT) condition is achieved when the auxiliary switch operates at twice the converter's switching frequency. Similarly, CIs increase switched capacitor cells, and auxiliary circuits in IBC aim to achieve increased voltage gain and softswitching operation [14]. However, the auxiliary switches experience elevated current stresses as a result of their higher switching frequency.…”

Section: Introductionmentioning

confidence: 99%

Improved Interleaved Boost Converter with Soft-Switching: Analysis and Experimental Validation

Popuri,

Bhajana,

Maharana

et al. 2023

Eng. Technol. Appl. Sci. Res.

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This paper proposes a novel interleaved boost converter for renewable energy applications. The two-phase interleaved boost converter was improved with lossless passive snubber cells to ensure the Zero Voltage Switching (ZVS) condition. The ZVS condition is contributed by a resonant inductor, a resonant capacitor, and two diodes. The proposed converter was operated in continuous current mode on its primary side. The significant merits of this converter are reduced switching losses, better efficiency, and reduced input current ripples without auxiliary switches. The soft-switching ability of this converter is maintained under both light- and heavy-load conditions. This paper also presents the operating principles and design analysis of the proposed converter. Furthermore, a 50-320V prototype was operated at 250 W to validate the soft-switching operation and theoretical analysis, and the experimental results are presented.

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Section: Introductionmentioning

confidence: 99%

Improved Interleaved Boost Converter with Soft-Switching: Analysis and Experimental Validation

Popuri,

Bhajana,

Maharana

et al. 2023

Eng. Technol. Appl. Sci. Res.

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“…The main structure in [9] is an interleaved boost converter, which features only one auxiliary switch with common ground and enables two main switches to realize ZVS and ZCS; the drawback is that the auxiliary switch needs four gate driving signals over one switching cycle, and the resonance condition is strict, which makes the mathematical mode analysis extremely complicated and difficult.…”

Section: Introductionmentioning

confidence: 99%

Boost Converter with Main Switch Possessing ZVT and ZCT and Auxiliary Switch Possessing ZCS

Hwu

Lin²,

Tseng

2023

Energies

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In this paper, a zero-voltage and zero-current transition (ZVZCT) boost converter is presented with a small number of auxiliary components, such as a resonant capacitor, a resonant inductor and an auxiliary power switch, to produce a main power switch with both zero-voltage switching (ZVS) and zero-current switching (ZCS). Furthermore, the auxiliary power switch also has zero current switching. In addition, a look-up table is employed to implement an auto-tuning technique to regulate the trigger position and turn-on time of the auxiliary power switch, to further improve efficiency, especially at light load, thereby making the overall efficiency of the converter present a horizontal curve. Moreover, in terms of the system control, the digital controller is implemented directly from the z-domain, and the field programmable gate array (FPGA) is utilized as the system control kernel to achieve a fully digitalized control system. The simulated results are used to demonstrate the feasibility of the proposed converter, whereas the experimental results are used to verify its effectiveness.

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“…Later, active clamp [11][12][13], zero-voltage transition [14][15][16], and zero-current transition [17,18] technologies were developed. The active clamping technology is a resonant circuit formed by external inductors, capacitors, and power switches.…”

Section: Introductionmentioning

confidence: 99%

Minimization of Output Voltage Ripple of Two-Phase Interleaved Buck Converter with Active Clamp

2021

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A control technique combining pulse width modulation (PWM) and pulse amplitude modulation (PAM) is presented herein to reduce the output voltage ripple of the converter as little as possible. Such a converter requires a two-stage cascaded structure. The first stage is the buck-boost converter, which is used to adjust the output voltage of the second power stage, whereas the second stage is the two-phase interleaved buck converter, which is used to reduce the output voltage ripple. In theory, the two phases of the second stage operate under the condition of individual duty cycles of 50% with a phase difference of 180° between the two, and hence, the currents in the two phases are cancelled for any period of time, thereby making the output voltage of the converter almost voltage-free. Moreover, in order to improve the overall efficiency further, the proposed soft-switching technique based on an active clamp is presented and applied to these two stages to render the main and auxiliary switches turned on with zero-voltage switching (ZVS). Finally, the operating principles and control strategies of the proposed converter are described, and then, their effectiveness is verified by experimental results.

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Interleaved Boost Converter with ZVT-ZCT for the Main Switches and ZCS for the Auxiliary Switch

Cited by 11 publications

References 42 publications

Improved Interleaved Boost Converter with Soft-Switching: Analysis and Experimental Validation

Improved Interleaved Boost Converter with Soft-Switching: Analysis and Experimental Validation

Boost Converter with Main Switch Possessing ZVT and ZCT and Auxiliary Switch Possessing ZCS

Minimization of Output Voltage Ripple of Two-Phase Interleaved Buck Converter with Active Clamp

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