Analysis and Suppression of Transformer DC-Bias for DC-DC Converter with Three-Level Phase-Shift Full-Bridge Topology

被引：0
|
作者：
Wang R. [1 ]
Xiao F. [1 ]
Fan X. [1 ]
Yang G. [1 ]
Zhang X. [1 ]
机构：
[1] National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering, Wuhan
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 16期
关键词：
DC bias; DC-DC converter; Medium frequency transformer; Phase shift;
D O I：
10.19595/j.cnki.1000-6753.tces.L80487
中图分类号：
学科分类号：
摘要：
In the medium-voltage high-power isolated DC-DC converter with low switching frequency, the challenge arises with the DC-bias problem of the medium-frequency transformer (MFT). Based on the three-level phase-shift full bridge topology, the harmonic voltage of the primary winding in MFT is calculated. Then, considering the voltage-current double close-loop control strategy of the DC/DC converter, the relationship between the DC component of the voltage on the MFT's primary winding and the fluctuant phase-shift angle of the controller is analyzed, and the effects of the control-frequency on the DC component of the primary voltage are analyzed. An experiment platform was established to compare the DC-bias performances of the MFT under different frequencies. The experimental results validate the DC-bias suppression of the proposed method. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
引用
收藏
页码：3345 / 3354
页数：9
相关论文
共 17 条
  • [1] Yang G., Xiao F., Fan X., Et al., Three-phase three-level phase shifted PWM DC-DC con-verter for electric ship MVDC application, IEEE Journal of Emerging and Selected Topics in Power Electronics, 5, 1, pp. 162-170, (2017)
  • [2] Zhang X., Xu Y., Xiao X., A high power density resonance cascaded H-bridge solid-state transformer for medium and high voltage distri-bution network, Transactions of China Electro-Technical Society, 33, 2, pp. 310-321, (2018)
  • [3] Li M., Peng B., A study of magnetic-bias control system for 400Hz sine-wave inverters, Journal of Xi'an University of Technology, 25, 2, pp. 169-173, (2009)
  • [4] Wu H., Restraining of DC bias transformer magnetization in solar energy grid inverter, Power Electronics, 43, 7, pp. 58-59, (2009)
  • [5] Chen Z., Bai B., Chen D., Et al., Research on the formation mechanism and suppression method of transformer DC bias, Transactions of China Electrotechnical Society, 30, 14, pp. 208-214, (2015)
  • [6] Takasu N., Oshi T., Miyawaki F., Et al., An experi-mental analysis of DC excitation of transformers by geomagnetically induced currents, IEEE Transa-Ctions on Power Delivery, 9, 2, pp. 1173-1182, (1994)
  • [7] Zhao Z., Cheng Z., Liu F., Et al., Modeling of the DC-biased stray-field loss of magnetic steel plate based on compensator of leakage flux, Transactions of China Electrotechnical Society, 30, 8, pp. 38-44, (2015)
  • [8] Picher P., Bolduc L., Dutil A., Et al., Study of the acceptable DC current limit in core-form power transformers, IEEE Transactions on Power Delivery, 12, 1, pp. 257-265, (1997)
  • [9] Wang J., Bai B., Liu H., Et al., Research on vibration and noise of transformers under DC bias, Transactions of China Electro-Technical Society, 30, 8, pp. 57-61, (2015)
  • [10] Cao L., He J., Zhang B., Dynamic hysteresis loss model of power transformer under DC current biasing and its verification, Proceedings of the CSEE, 28, 24, pp. 141-146, (2008)
12