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Application research on ZVZCS full-bridge converter technique

China Welding 2005年第2期14卷 113-116页

作者：贲洪奇杨世彦原树斌赵俊宝 Department of Electrical Engineering Harbin Institute of Technology Harbin 150001

Based on ZVZCS （zero voltage zero current switching） full bridge converter technique, a novel inverter welding power supply is designed, in which the secondary side of the transformer adopts passive clamping circuit to reduce voltage stress of rectifying components. This supply can realize power switches ZVS （zero voltage switching ） or ZCS （zero current switching） within a very wide range of load; Only through setting up blocking capacitor in the primary side of transformer, the power transformer＇s bias in the full-bridge converter is suppressed and the primary current can be reset easily. In addition, how to calculate the blocking capacitor and its influence to power supply performance are also subjects discussed in this paper.

关键词： zero voltage switching zero current switching full-bridge converter blocking capacitor

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A State Space Modeling of Non-Isolated Bidirectional DC-DC Converter with Active Switch

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Circuits and Systems 2016年第4期7卷 187-197页

作者： J. Barsana Banu M. Balasingh Moses Department of Electrical and Electronics Engineering Anna University Trichirapalli India

In this paper, analysis, design and implementation of non-isolated soft-switching bidirectional DC-DC converter with an active switch are described. The proposed topology gives the output voltage as twice as the input voltage and enhances the efficiency up to 94.5% and 92.9% for boost and buck mode operation by proper selection of the duty cycle. Soft switching can be achieved at both steps up and step down operating modes. Small signal analysis based on state space averaging and transfer functions have been presented in detail for the proposed converter. Finally, the feasibility of the desired converter is confirmed to mat lab simulation and investigational results.

关键词： Batteries Bidirectional Power Flow Mathematical Analysis zero Current switching zero voltage switching

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Selection of Carrier Waveforms for PWM Inverter

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Journal of Shanghai University(English Edition) 2003年第4期7卷 389-394页

作者：陈国呈屈克庆许春雨孙承波 School of Electromechanical Engineering and Automation Shanghai UniversityShanghai 200072 China

In this paper the influence of different carrier waveforms upon the output characteristics of PWM inverter is described in detail. When a triangular carrier waveform is used in hard-switching PWM inverters, harmonics exist in the neighborhood of the output frequency of the inverter output voltage and current due to the dead time. The triangular carrier waveform used in soft-switching PWM inverter will cause difficulties in controlling resonance-trigger time, higher loss in the resonant circuit, and less utilization of the DC bus voltage. If a sawtooth carrier is used in hard-switching PWM inverter, there will be severe distortion in the current waveform. When sawtooth carriers with alternate positive and negative slopes are used in soft-switching PWM inverters, the resonance-trigger time is easy to control, and distortion in the output voltage and current caused by the dead time will not appear.

关键词： hard-switching soft-switching resonance zero voltage switching zero current switching dead time.

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维普期刊数据库

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Design of the Power Supply for the Pulsed Electric Current Sintering

Design of the Power Supply for the Pulsed Electric Current S...

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第26届中国控制与决策会议

作者： Jiangtao Shi Lei Yao Binbin Ni Qi Chen Jianfeng Xie Xiaotao Han Wuhan National High Magnetic Field Center Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology

ISBN: (纸本)9781479937097

The pulsed electric current sintering（PECS） is a new rapid sintering technique. As an important part of the PECS system, the pulsed electric current power supply is one of the main factors which affect the sintering result. This paper proposes a pulsed electric current power supply topology based on phase-shift full-bridge converter, which implements ZVS（zero voltage switching）. By controlling the PWM output, it implements such variety output modes as pulse mode, DC mode and Pulse-DC mode. The power supply can output 700 A current and 14 V voltage. Its output pulse width is a minimum of 2ms, and can be adjusted by the user.

关键词： PECS Pulsed Electric Current Power Supply Phase-Shift Full-Bridge Convertor zero voltage switching

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