Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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High side flyback circuit configuration for CM noise cancellation

  • Fu, Kaining (College of Electrical Engineering and Automation, Fuzhou University) ;
  • Chen, Wei (College of Electrical Engineering and Automation, Fuzhou University)
  • Received : 2020.01.28
  • Accepted : 2020.06.01
  • Published : 2020.09.20
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Abstract

Flyback topologies have advantages in terms of low cost, fewer electrical components, and simple circuit design. Semiconductor devices in the primary and secondary sides are regarded as major EMI noise sources in EMI propagation paths. However, the same transformers under different circuit configurations can bring different noise cancellation effects due to a change of the electric potential distribution in transformer windings as well as the phases of the EMI noise sources in the primary and secondary sides. In this paper, a CM noise cancellation mechanism is investigated. In addition, a flyback topology with high side gate driving in the primary side is proposed to form a CM noise cancellation mechanism. Based on the proposed flyback topology, the capacitor compensation cancellation technique can be applied to lower the electromagnetic interference (EMI) noise level of the designed converter. Finally, the experimental noise spectrums are used to verify the effectiveness of the proposed flyback circuit configuration scheme.

Keywords

Acknowledgement

This work was supported by the National Natural Science Foundation of China under Grant 51777036.

References

  1. Limits and Methods of Measurement of Radio Disturbance Characteristics of Information Technology Equipment: European norm standard EN 55032; CISPR, European Union: Brussels, Belgium, (2015)
  2. Chu, Y., Wang, S., Zhang, N., Fu, D.: A common mode inductor with external magnetic field immunity low-magnetic field emission and high-differential mode inductance. IEEE Trans. Power Electron. 30(12), 6684-6694 (2015) https://doi.org/10.1109/TPEL.2014.2387063
  3. Chu, Y., Wang, S.: A generalized common-mode current cancelation approach for power converters. IEEE Trans. Ind. Electron. 62(7), 4130-4140 (2015) https://doi.org/10.1109/TIE.2014.2387335
  4. Cochrane, D., Chen, D.Y., Boroyevic, D.: Passive cancellation of common-mode noise in power electronic circuits. IEEE Trans. Power Electron. 18(3), 756-763 (2003) https://doi.org/10.1109/TPEL.2003.810858
  5. Pentti, L., Hyvonen, O.: Electrically decoupled integrated transformer having at least one grounded electric shield," U.S. Patent 7733205 B2, Jun. 8, (2010)
  6. Tokaldani, M.A.S., Shafei, N., Ordonez, M.: Planar transformers with near zero common mode noise for flyback and forward converters. IEEE Trans. Power Electron. 32(2), 2687-2703 (2017) https://doi.org/10.1109/TPEL.2016.2579679
  7. Xie, L., Ruan, X., Ji, Q., Ye, Z.: Shielding-cancellation technique for suppressing common mode EMI in isolated power converters. IEEE Trans. Ind. Electron. 62(5), 2814-2822 (2015) https://doi.org/10.1109/TIE.2014.2365154
  8. Chen, H., Xiao, J.: Determination of transformer shielding foil structure for suppressing common-mode noise in flyback converters. IEEE Trans. Magn. 52(12), 1-9 (2016)
  9. Chen, H., Liu, G.: Determination of the width of shielding foil in sandwiched winding transformer for minimizing common mode EMI of flyback converters. IEEE Trans. Electromagn. Compat. 62(2), 639-642 (2020) https://doi.org/10.1109/temc.2019.2909820
  10. Chen, H., Zheng, Z., Xiao, J.: Determining the number of transformer shielding winding turns for suppressing common-mode noise in flyback converters. IEEE Trans. Electromagn. Compat. 60(5), 1606-1609 (2018) https://doi.org/10.1109/temc.2017.2777258
  11. Bai, Y., Yang, X., Li, X., Zhang, D., Chen, W.: A novel balanced winding topology to mitigate EMI without the need for a Y-capacitor. In Proceedings of the 2016 IEEE Appl. Power Electr. Conf. Expo., 3623-3628 (2016)
  12. Zhang, H., Wang, S., Li, Y., Wang, Q., Fu, D.: Two-capacitor transformer winding capacitance models for common-mode EMI noise analysis in isolated DC-DC converters. IEEE Trans. Power Electr. 32(11), 8458-8469 (2017) https://doi.org/10.1109/TPEL.2017.2650952
  13. Chen, Q., Chen, W., Song, Q., Yongfa, Z.: An evaluation method of transformer behaviors on common-mode conduction noise in SMPS, 2011 IEEE ninth international conference on power electronics and drive systems, Singapore, 782-786 (2011)