Investigation of Asymmetrical PWM Method on High Step Down Interleaved DC-DC Converter With Modified Series Capacitor

Document Type : Original Article

Authors

Faculty of Engineering, Malayer University, Malayer, Iran.

Abstract

In this paper an asymmetrical pulse width modulation (PWM) method is used for a modified series capacitor interleaved buck converter. One of the problems of the interleaved converter is unbalance in the inductors current. In symmetrical pulse width modulation (PWM) method the duty cycles of switches are equal to each other and there are unbalance in the inductors current. To solve this problem, in this paper asymmetrical pulse width modulation (PWM) method is used. In asymmetrical PWM, duty cycle of switches are not equal. By using of asymmetrical PWM method, the modified series capacitor interleaved buck converter not only has linear voltage gain with high step down conversion ratio, but also the inductors currents are balanced. The proposed converter is simulated by MATLAB/Simulink software and the results are presented. Moreover, a laboratory prototype is tested to validate the simulation and the theoretical analysis.

Keywords

Main Subjects

References

[1] I. Lee, S. Cho and G. Moon, “Interleaved Buck Converter Having Low  Switching  Losses  and  Improved  Step-Down  Conversion Ratio,”  IEEE  Trans.  Power  Electron.,  vol.  27,  no.  8,  pp. 3664–3675, Aug. 2012.
 [2] P. Azer, A. Emadi, “Generalized state space Average model for multiphase Interleaved buck, boost and buck-boost DC-DC converters; transient, steady state and switching dynamics” IEEE Trans. Power Electron., vol. 36, no. 8, pp. 10666-10736, Jan. 2020.       
[3] علیرضا باقریان، توحید نوری، مهدی شانه، مهدی رادمهر «ارائه یک مبدل اینترلیود DC-DC فوق افزاینده ولتاژ با قابلیت کلیدزنی در ولتاژ صفر و استرس ولتاژ کم روی کلیدها برای کاربرد سیستم­های انرژی تجدیدپذیر»، مجله مهندسی برق دانشگاه تبریز، جلد 52، شماره 4، صفحات 227-218، 1401.
[4]  N. Rana, S. Banerjee, S. K.Giri, A. Trivedi and S. S. Williamson, “Modeling, Analysis and Implementation of an Improved Interleaved Buck-Boost Converter” IEEE Trans. Circuit System II. , vol. 68, no. 7, pp. 2588–2592, Jul 2021.
[5]  B. N.Alajami, M. I. Marei, A. Abdelsalam, and N. A. Ahmed,  “Multiphase Interleaved Converter Based on cascaded Non-Inverting Buck-Boost Converter,” IEEE Access., vol. 10, pp. 42497–42506, Apr 2022.
[6] Y. Wang, Z. Rong, Z. Sun, Y.Guan, S. Han and D. Xu, "Analysis and Implementation of a Transformerless Interleaved ZVS High-Step-Down DC-DC Converter, " IEEE Trans. Power Electon., vol. 38, No.11, pp. 13484-13495, Aug 2023.

 

[7]  P. Azer and A. Emadi, “Generalized State Space Average Model for Multi-Phase Interleaved Buck, Boost and Buck-Boost DC-DC Converters: Transient, Steady-State and Switching Dynamics",  IEEE Access., vol. 9, pp. 77735–77745, Apr 2020.
[8]  J. Teng, P. Shen, B. Liu and S. Chen, “Circuit Configurable Bidirectional DC-DC Converter for Retired Batteries", IEEE Access., vol. 9,  pp. 156187–156199, Nov 2021.
[9]  J. Wan, F. Liu, Y. Li, and K. Z. Liu, “An Efficient Interleaved Bidirectional DC–DC Converter With Shared Soft-switching Auxiliary Circuit,” IEEE Trans. Power Electron., vol. 38, no. 11, pp. 14139–14149, May 2023.
[10]  Z. Wang, Z. Wu, T. Liu, C. Chen and Y. kang, “A High-Efficiency and High-Power-Density Interleaved Integrated Buck-Boost-LLC Converter and Its Comprehensive Optimal Design Method,” IEEE Trans. Power Electron., vol. 37, no. 9, pp. 10849–10863, Apr 2022.
[11] Z. Yao, S. Lu, “A Simple Approach to Enhance the Effectiveness of Passive Currents Balancing in an Interleaved Multiphase Bidirectional DC-DC Converter,”IEEE Trans. Power Electron.,vol. 34, no. 8, pp. 7242–7255, Nov. 2018.
[12] H. C. Chen, C. Y. Amaro, L. M. Huang, “Decoupled Current-Balancing Control With Single-Sensor Sampling-Current Strategy For Two-Phase Interleaved Boost-Type Converters,”IEEE Trans. Industrial Electron.,vol. 63, no. 3, pp. 1507–1518, Mar. 2016.
[13] M. H. Jahanbakhshi, M. Etezadinejad, “Modeling and Current Balancing of Interleaved Buck Converter Using Single Current Sensor,” 27 th Iranian Conference on Electrical Engineering (ICEE2019). 2019.
]14[ علیرضا رمضان قنبری، ابوالقاسم راعی «روش کنترلی جدید با هدف بهینه­سازی بازده مبدل نیم پل در تغییرات جریان بار»، مجله مهندسی برق دانشگاه تبریز، جلد 49، شماره 2، صفحات 625-613، 1398.
[15]  C. Garcia, P. Zumel, A. D. Castro, and J. A. Cobos, “Automotive DC–DC  bidirectional  converter  made  with  many  interleaved buck stages,” IEEE Trans. Power Electron., vol. 21, no. 21, pp. 578–586, May 2006.
[16] Y. M. Chen, S. Y. Teseng, C. T. Tsai, and T. F. Wu, “Interleaved buckconverters with a single-capacitor turn-off snubber,”IEEE Trans. Aerosp.Electron. Syst., vol. 40, no. 3, pp. 954–967, Jul. 2004.
 [17] P.-L.  Wong,  P.  Xu,  P.  Yang,  and  F.  C.  Lee,  “Performance improvements  of  interleaving  VRMs  with  coupling  inductors,” IEEE Trans. Power Electron., vol. 16, no. 4, pp. 499–507, Jul. 2001.
[18] K. Yao, Y. Qiu, M. Xu, and F. C. Lee, “A novel winding-coupled buck  converter  for  high-frequency,  high-step-down  DC–DC conversion,”  IEEE  Trans.  Power  Electron.,  vol.  20,  no. 5, pp. 1017–1023, Sep. 2005.
[19] M. Esteki, B. Poorali, E. Adib and H. Farzanehfard, “ Interleaved Buck Converter with Continuous Input Current, Extremely Low Output Current Ripple, Low Switching Losses and Improved Step-Down Conversion Ratio”, IEEE Trans. Power Electron, 2015.
[20]  K. Nishijima, K. Harada, T. Nakano, T. Nabeshima, and T. Sato, “Analysis of  double  step-down  two-phase  buck  converter  for VRM,”  in  Proc.  IEEE  Telecommun.  Energy  Conf.,  2005,  pp. 497–502.
[21]  K.  Matsumoto,  K.  Nishijima,  T.  Sato,  and  T.  Nabeshima,  “A two-phase  high  step  down  coupled-inductor  converter  for  next generation low voltage  CPU,”  in  Proc.  IEEE  Int.  Conf.  Power Electron. ECCE Asia, 2011, pp. 2813-2818.
[22]  S.  Kim,  H.  Cha,  H.  Ahmed,  and  H.  Kim,  “Isolated  Double Step-down DC–DC Converter with Improved ZVS Range and No Transformer Saturation Problem,” IEEE Trans. Power Electron, vol. 32, no. 3, pp. 1792–1804, Mar. 2017.
[23] Y.  Jang, M.  M.  Jovanovic,  and  Y.  Panov,  “Multi-phase  buck converters with extended duty cycle,”  in Proc. 21st Annu. IEEE Appl. Power Electron. Conf. Expo., Mar. 2006, pp. 38–44
[24] I.-O. Lee, S.-Y. Cho, and G.-W. Moon, “Interleaved buck converter having low switching losses and improved step-down conversion ratio,” IEEETrans. Power Electron., vol. 27, no. 8, pp. 3664–3675, Aug. 2012.
[25] D. Do, H. Cha, B. L. Nguyen, and H. Kim, “Two-Channel Interleavedbuck LED driver using current-balancing capacitor,”IEEE J. Emerg. Sel.Topics Power Electron., vol. 6, no. 3, pp. 1306–1313, Sep. 2018.
[26] P. S. Shenoy, M. Amaro, J. Morroni, and D. Freeman, “Comparison of a buck converter and a series capacitor buck converter for high-frequency,high-conversion-ratio voltage regulators,”IEEE Trans. Power Electron.,vol. 31, no. 10, pp. 7006–7015, Oct. 2016.
[27] K. Kim, H. Cha, S. Park, and I.-O. Lee, “A modified series-capacitor high conversion ratio DC–DC converter eliminating start-up voltage stress problem,” IEEE Trans. Power Electron., vol. 33, no. 1, pp. 8–12, Jan. 2018.
[28] D. Bui, H. Cha, and V. Nguyen, “Asymmetrical PWM Series-Capacitor High-Conversion-Ratio DC-DC Converter,” IEEE Trans. Power Electron., vol. 36, no. 8, pp. 8628-8633,August. 2021.
 
TABRIZ JOURNAL OF ELECTRICAL ENGINEERING
Volume 54, Issue 3 - Serial Number 109
November 2024
Pages 323-334

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