A novel zero-current-transition full bridge DC-DC converter

Zhang, J.M.; Xie, Xiaogao; Wu, Xufeng; Qian, Zhaoming

doi:10.1109/apec.2005.1453039

Cited by 9 publications

(8 citation statements)

References 8 publications

(2 reference statements)

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“…Also, a new TL ZCT converter shown in Fig been proposed based on the corresponding ZCT FB topology [15]. B.…”

Section: Derivation Methodsmentioning

confidence: 99%

“…5 is built to verify the validity of the derivation method. The detailed analysis for each operation mode is almost the same as that for the full bridge ZCT topology [15]. The steady sate operation mode is shown in Fig.10.…”

Section: Experiments Verificationmentioning

confidence: 99%

“…The key parameters of the prototypes are listed in Table I. Also, an extra clamp diode (MUR840 in the prototype) from the collector of auxiliary switch Sa to secondary rectifier positive output is added to prevent the parasitic ring of auxiliary switch Sa as presented in [18].…”

Section: Experiments Verificationmentioning

confidence: 99%

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A General Method for Two-Level Bridge Type DC/DC Converter to Three-Level DC/DC Converter

Zhang¹,

Qian²,

Miao³

et al. 2006

2006 12th International Power Electronics and Motion Control Conference

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This paper studies the approach of derivation of three-level (TL) half-bridge (HB) topology from conventional full bridge DC/DC topology. The derived TL HB topology has same device count and performance as the corresponding full bridge topology, and it is more suitable for high voltage applications. The derivation approach for different control method, i.e. PWM control, frequency control and phase shift control, are presented. Some novel TL HB topologies are proposed based on the approach. The experimental results from these novel topologies verify the validity of the proposed derivation approach.

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“…Also, a new TL ZCT converter shown in Fig been proposed based on the corresponding ZCT FB topology [15]. B.…”

Section: Derivation Methodsmentioning

confidence: 99%

Section: Experiments Verificationmentioning

confidence: 99%

See 1 more Smart Citation

A General Method for Two-Level Bridge Type DC/DC Converter to Three-Level DC/DC Converter

Zhang¹,

Qian²,

Miao³

et al. 2006

2006 12th International Power Electronics and Motion Control Conference

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show abstract

“…Resonant converters have miniaturization, high efficiency and low noise (Xie et al, 2007;Xu et al, 2006) but a large variation in switching frequency is needed to control the output voltage. These converters have size reduction and noise problems (Zhang et al, 2006;Eid et al, 2006;Fathy et al, 2006;Yao et al, 2004;Singh et al, 2002;Y. Ren et al, 2003;Singh et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Simulation and Implementation of Quasi Resonant DC-DC Converter

S.¹

2012

Journal of Computer Science

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Problem statement:A half-bridge LLC resonant converter with a voltage doubler rectifier has a simple structure and its Zero-Voltage-Switching (ZVS) capability is excellent from zero to full load condition. But conduction loss is more due to high circulating energy thus reducing the system efficiency. Moreover a variable frequency control method makes the control circuits more complicated than those using the Pulse Width Modulation (PWM) control method. Thus, DC drive has lower efficiency when it operates on light loads. Approach: To improve the efficiency of the DC drive under light loads, a PWM-controlled quasi-resonant converter is proposed .It has simple control circuits and less conduction loss compared to a half-bridge LLC resonant converter under light load conditions. The proposed converter has a half-bridge LLC resonant converter along with an auxiliary circuit. The load regulation of the proposed converter can be achieved by an auxiliary circuit. Thus the proposed converter is expected to be suitable sustaining power module for the efficiency enhancement of DC drives. As the magnetizing inductance of the proposed converter is larger the circulating energy is considerably reduced under light load conditions. In this study the operational principle, design and modeling of QRC DC-DC converters for DC drives are presented. The PWM controlled quasi resonant converter is implemented using PIC microcontroller 16F184A. Results: The capacitor filter in the output is replaced by pi filter to produce DC with minimum ripple. The experimental results and simulation results are compared. This converter has the advantages like reduced number of switches, reduced transformer and filter size, reduced ripple, reduced switching losses, reduced switching stresses and increased power density. Conclusion: The experimental results closely agree with the simulation results.

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“…The soft-switching techniques for PWM full bridge converter can be classified into two kinds: one is zero-voltage-switching (ZVS) and the other is zero-currentswitching (ZCS). For dc-dc power conversion applications, the conventional phase-shift full-bridge dc/dc converter has drawn more attention in recent decades due to its advantages: high conversion efficiency, high power density, and low electro magnetic interference [3][4][5][6][7][8]. In order to obtain high conversion efficiency for dc-dc power conversion applications, a soft-switched dc/dc converter with a LCC primary-side energy storage elements based on [9][10][11][12] is studied and implemented in this paper.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Square Wave Mode Phase-Shifted PWM LCC Resonant Converter for Regulated Power Supply

Padmanabhan¹,

Sukhi²,

Jeyashree³

2009

ENG

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This paper presents an improved self sustained oscillating controller circuit using LCC components for improving the overall efficiency of the system. It has a micro controller based active controller, which controls the performance from no-load up to full-load. The steady state characteristics are developed and a design example is given in detail. The proposed controller allows zero current switching at any loading condition which results in a reasonable reduction of power loss during switching with a promising efficiency. Analytical and experimental results verify the achievement the design specifications.

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A novel zero-current-transition full bridge DC-DC converter

Cited by 9 publications

References 8 publications

A General Method for Two-Level Bridge Type DC/DC Converter to Three-Level DC/DC Converter

A General Method for Two-Level Bridge Type DC/DC Converter to Three-Level DC/DC Converter

Simulation and Implementation of Quasi Resonant DC-DC Converter

Quasi-Square Wave Mode Phase-Shifted PWM LCC Resonant Converter for Regulated Power Supply

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