Abstract：This paper proposes a novel three-level active neutral-point-clamped zero-current- transition (ANPC-3L ZCT) converter. The proposed soft-switching topology employs two auxiliary switches and an LC resonant tank for each phase leg to achieve soft commutation of main switching devices. The voltage stress of all the switches is clamped to half of dc link voltage and the auxiliary switches have a much lower current rating than the main switches. Besides that the auxiliary switches have no switching losses. The operation principle and design of resonant tank is analyzed in details in this paper. An 80kW half-bridge prototype of the ANPC-3L ZCT inverter is built. The effectiveness and advantages of the proposed topology are verified experimentally.
李锦, 刘进军. 有源中点钳位三电平零电流转换软开关变流器[J]. 电工技术学报, 2013, 28(3): 195-201.
Li Jin, Liu Jinjun. Three-Level Active Neutral-Point-Clamped Zero-Current-Transition Converter. Transactions of China Electrotechnical Society, 2013, 28(3): 195-201.
[1] Rodriguez J, Lai J S, Peng F Z. Multilevel inverters: a survey of topologies, controls, and applications[J]. IEEE Transactions on Industrial Electronics, 2002, 49(4): 724-738. [2] Saeedifard M, Bakhshai A, Joos G. Low switching frequency space vector modulators for high power multimodule converters[J]. IEEE Transactions on Power Electronics, 2005, 20(6): 1310-1318. [3] Gannett R A. Control strategies for high power four-leg voltage source inverters[D]. Blacksburg: Virginia Tech, 2001. [4] Xu D H, Li R, Ma Z Y, et al. A family of novel zero-voltage switching three-phase PWM converters topology for distributed generation[C]. IEEE Power Electronics and ECCE Aisa Meeting, 2011: 847-860. [5] Lai J S, Yu W S, Park S Y. Variable timing control for wide current range zero-voltage soft-switching inverters[C]. IEEE Applied Power Electronics Conference and Exposition, 2009: 407-412. [6] 范子超, 千金, 于庆广, 等. ARCPI及其在多电平逆变器中的应用[J]. 电工技术学报, 2006, 21(5): 58-63. [7] Urgun S, Erfidan T, Bodur H, et al. A new ZVT-ZCT quasi-resonant DC link for soft switching inverters[J]. International Journal of Electronics, 2010, 97(1): 83-97. [8] Yu W S, Lai J S, Park S Y. An improved zero-voltage switching inverter using two coupled magnetics in one resonant pole[J]. IEEE Transactions on Power Electronics, 2010, 25(4): 952-961. [9] Seyed M M, Mohammad R A, Hamid A, et al. Quasi-parallel resonant DC-link inverter with a reduced switch voltage stress[J]. Energy Converter and Management, 2011, 52(1): 590-595. [10] Amini M R, Farzanehfard H. Three-phase soft- switching inverter with minimum components[J]. Transactions on Industrial Electronics, 2011, 58(6): 2258-2264. [11] Sperb J D, Zanatta I X, Michels L, et al. Regenerative undeland snubber using a ZVS PWM DC-DC auxiliary converter applied to three-phase voltage-fed inverters[J]. Transactions on Industrial Electronics, 2011, 58(8): 3298-3307. [12] Suvarun D, Chandan C. A new three-phase ZCS pulse width modulated inverter[J]. International Journal of Power and Energy Conversion, 2011, 2(2): 153-176. [13] Bal G, Ozturk N, Bekiroglu E. Investigation of switching losses for sinusoidal PWM zero current switching inverter and resonant link inverter[C]. IEEE Industrial Electronics Annual Conference, 2009: 590-594. [14] Jiang M C, Tu G B, Chen C H, et al. Analysis and design of a novel soft-switching three-phase inverter[C]. International Power Electronics Conference, 2010: 125-130. [15] Bellar M, Wu T, Tchamdjou A, et al. A review of soft-switched DC-AC converters[J]. IEEE Transactions on Industry Application, 1998, 34(4): 847-860. [16] Frame S, Katsis D, Lee D H, et al. A three-phase transition inverter with inductor feedback[C]. Virginia Power Electronics Center Seminar, 1996: 189-193. [17] Choi J, Boroyevich D, Lee F C. A novel ZVT inverter with simplified auxiliary circuit[C]. IEEE Applied Power Electronics Conference and Exposition, 2001: 1151-1157. [18] Hua G, Yang, Jiang Y, et al. Novel zero-current- transition PWM converters[C]. IEEE Power Electronics Specialist Conference, 1993: 538-544. [19] Mao H, Lee F C, Zhou X, et al. Improved zero- current-transition converters for high power applica- tions[C]. IEEE Institute for Advanced Studies, Annu, Meeting, 1996: 1145-1152. [20] Li Y, Lee F C. A comparative study of a family of zero-current-transition schemes for three-phase inverter applications[C]. Applied Power Electronics Conference and Exposition, 2001: 1158-1164. [21] Li Y, Lee F C, Boroyevich D. A simplified three- phase zero-current-transition inverter with three auxiliary switches[J]. IEEE Transactions on Power Electronics, 2003, 18(3): 802-813. [22] Yong L, Lee F C, Boroyevich D. A three-phase soft-transition inverter with a novel control strategy for zero-current and near zero-voltage switching[J]. IEEE Transactions on Power Electronics, 2001, 16(5): 710-723. [23] Lee D H, Li Y, Lee F C, et al. 2nd phase SEMS project report[R]. Virginia Tech. Blacksburg, 1996. [24] Li Y, Lee F C. A generalized zero-current-transition concept to simplify multilevel ZCT converters[J]. IEEE Transactions on Industry Applications, 2006, 42(5): 1310-1320. [25] Thomas B, Steffen B. The active NPC converter for medium-voltage applications[C]. Industry Applications Annual Conference, 2005: 84-91.
2013, Vol. 28 
