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

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.

[1]  Wen-Zhuang Jiang,et al.  Interleaved Boost Converter with ZVT-ZCT for the Main Switches and ZCS for the Auxiliary Switch , 2020 .

[2]  Marian K. Kazimierczuk,et al.  Design of zero-voltage-ripple buck dc-dc converter , 2017, 2017 IEEE 60th International Midwest Symposium on Circuits and Systems (MWSCAS).

[5]  Fang Zhuo,et al.  New No-isolated Interleaved Bidirectional soft-switching DC-DC Converter with a Novel Auxiliary ZVT Cell , 2018, 2018 IEEE Energy Conversion Congress and Exposition (ECCE).

[6]  M. R. Ramteke,et al.  A Novel High Gain Soft-Switching Interleaved LCL Integrated Fly-back Step-up Converter without An Auxiliary Switch for DC Microgrid , 2018, 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES).

[7]  Ehsan Adib,et al.  ZVT Resonant Core Reset Forward Converter With a Simple Auxiliary Circuit , 2018, IEEE Transactions on Industrial Electronics.

[8]  Liangzong He,et al.  An Interleaved Soft Switching High Step-Up Converter With Low Input Current Ripple and High Efficiency , 2019, IEEE Access.

[9]  C. Bunlaksananusorn,et al.  Analysis and Design of a Zero-Voltage-Switched (ZVS) Quasi-Resonant Buck Converter Operating in Full-Wave Mode , 2020, 2020 6th International Conference on Engineering, Applied Sciences and Technology (ICEAST).

[10]  Kuo-Ing Hwu,et al.  Two-Phase Interleaved Boost Converter with ZVT Turn-On for Main Switches and ZCS Turn-Off for Auxiliary Switches Based on One Resonant Loop , 2020 .

[11]  Hirotaka Koizumi,et al.  Two-Stage Interleaved DC-DC Converter with Input-Parallel Output-Series Connection , 2019, 2019 IEEE International Symposium on Circuits and Systems (ISCAS).

[12]  Chao-Ming Huang,et al.  Interleaved high step-up DC-DC converter with parallel-input series-output configuration and voltage multiplier module , 2017, 2017 IEEE International Conference on Industrial Technology (ICIT).

[13]  Yu Tang,et al.  High step-up ZVT Converter Based on Active switched Coupled inductors , 2020, IEEE Access.

[14]  R. Ayyanar,et al.  High Frequency ZVT Converter for Variable DC-Link in Electric Vehicle Traction Drive , 2019, 2019 IEEE 7th Workshop on Wide Bandgap Power Devices and Applications (WiPDA).

[15]  Tao Tao,et al.  Digital PWM Control Active Clamp Flyback Converter with Adaptive Period Modulation , 2020, 2020 21st International Conference on Electronic Packaging Technology (ICEPT).

[16]  Yeu-Torng Yau,et al.  Active Clamp Boost Converter with Blanking Time Tuning Considered , 2021 .

[17]  Sharmin Sobhan.  Comparative Assessment of Non-Isolated DC-DC Converters Combined with Passive Ripple Cancelling Circuit , 2018, 2018 10th International Conference on Electrical and Computer Engineering (ICECE).

[18]  Qinsong Qian,et al.  System Performance Optimization for Dual-Loop Dual-Variable Controlled Active Clamp Flyback Converter Using Decoupling Compensation Technique , 2021, 2021 IEEE Applied Power Electronics Conference and Exposition (APEC).

[19]  Kuo-Ing Hwu,et al.  Simple Structure of Soft Switching for Boost Converter , 2020 .

[20]  M. Milanovic,et al.  Voltage Ripple Cancellation in Buck Converter based on Hybrid Structured Connection , 2006, 2006 12th International Power Electronics and Motion Control Conference.

[21]  Xiaobo Yang,et al.  Analysis and validation of the output current ripple in interleaved buck converter , 2017, IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society.