AUTHORS: Jinfeng Liu, Yu Zhang, Xudong Wang, Rui Gong

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ABSTRACT: Power rectifier unit can realize converting current by use of three-phase synchronous rectification bridge. The multiple parallel power units can amplify the capability of single generator and it is invaluable in battery charge, welding machine and electrochemistry fields. Nevertheless, the electromagnetic interference (EMI) which results from the speedy switch of power devices would affect the parallel output voltage, even out of control. According to the structure of power rectifier unit in this paper, the current path and magnitude of common mode (CM) conducted interference which ranges from 10kHz to 30MHz would be more analysed. The simulation model with parasitic parameters based on SPWM control model was built in this paper and then contrasted the different suppression methods by use of inductor and transformer respectively. At last, the line impedance stability network (LISN) and EMI receiver were used to test the common mode interference (CMI) of power rectifier unit. The experiment result verified the accuracy of model and validity of suppression method with CM transformer.

KEYWORDS: Electromagnetic Interference, Common Mode Transformer, Conducted Interference, Power Rectifier Unit, Line Impedance Stability Network

REFERENCES:

[1] P. A. Dahono, M. Firmansyah, D. Pramasti Y., A high-current low-voltage DC power supply, IEEE Power Electronics and Drive Systems, Denpasar, Indonesia, 2001.

[2] Qamaruzzaman, A. Purwadi, P.A. Dahono, A DC high-current low-voltage power generating system, IEEE Power System Technology Conference, Kunming, China, 2002.

[3] MH Hedayati, AB Acharya, Common-mode filter design for PWM rectifier-based motor drives, IEEE Transactions on Power Electronics, Vol.28, No.11, 2013, pp.5364-5371.

[4] Pei Xue-jun, Zhang Kai, Kang Yong, Chen Jian, Damping and Suppression of common mode interference currents in PWM inverter, Proceedings of the CSEE, Vol.24, No.11, 2004, pp.80-84.

[5] Lei Xing, Jian Sun, Wai Rongjong, Conducted common-mode EMI reduction by impedance balancing, IEEE Transaction on Power Electronics, Vol.27, No.3, 2012, pp.1084- 1089.

[6] Z. Zhan, Y. Zhong, H. Gao, L. Yuan, Hybrid selection harmonic elimination PWM for common-mode voltage reduction in three-level neutral-point-clamped inverters for variable speed induction drives, IEEE Transactions on Power Electronics, Vol.27, No.3, 2012, pp.1152- 1158.

[7] Johann W. Kolar, Thomas Friedli, Jose Rodriguez, Patrick W. Wheeler, Review of threephase PWM AC-AC converter topologies, IEEE Trans. Ind. Electron., Vol.58, No.11, 2011, pp.4988-5006.

[8] Fonseca Davide, Cabrita Carlos, Calado Maria, Some design aspects concerning a new singlephase AC/DC PWM converter for ac traction systems, WSEAS Trans. Circuits Syst., Vol.4, No.9, 2005, pp.1019-1027.

[9] Tokuda Masamitsu, Ohsaki Hiryuki, Mastuo Takashi, Conducted interference immunity characteristics to high-speed power line communication system, IEEE International Symposium on Power Line Communications and Its Applications, Udine, Italy, 2011.

[10] He Hong, Bao Shuai, Li Hang, Suppression of the conducted interference of switching power supply, Key Engineering Materials, Vol.474, No.2, 2011, pp.883-887.

[11] Sun Ya-xiu, Sun Rui-feng, Chen Bing-cai, Forecast of conducted interference of three-phase PWM drive motor system, Electric Machines and Control, Vol.15, No.5, 2011, pp.42-48.

[12] Darie E., Cepisca C., About the high-frequency interferences produced in systems including PWM and AC motors, Proceedings of the 12th WSEAS International Conference on Circuits, Heraklion, Greece, 2008.

[13] Fucun Han, Shanhong He, Denren Feng, Binying Peng, The conducted interference of electromagnetic pulse toward switch trigger system, IEEE Conference on Industrial Electronics and Applicaions, Hangzhou, China, 2014.

[14] ML Heldwein, T Nussbaumer, JW Kolar, Common mode modelling and filter design for a three-phase buck-type pulse width modulated rectifier system, IET Power Electronics, Vol.3, No.2, 2010, pp.209-218.

[15] JW Shin, H Shin, GS Seo, JI Ha, Low-common mode voltage H-bridge converter with additional switch legs, IEEE Transactions on Power Electronics, Vol.28, No.4, 2013, pp.1773-1782.