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Novel soft switching resonant reset wide input range dual switch
forward converter |
| CHEN Wei, LV Zheng-yu |
| College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China |
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Abstract A novel resonant reset asymmetrical dual switch forward converter (DSFC) was proposed to overcome the duty ratio limitation issue existing in DSFC, which is unsuitable for the wide input range application and improving the efficiency. Compared with the traditional DSFC, the converter maintained the advantage of lowering voltage stress on each switch, and possessed the merits with the duty ratio exceed 50% and the conventional pulse width modulation (PWM) operation capability. The soft switching transition for all switches under all conditions was achieved while no modification was made on the original transformer component and the auxiliary circuit was comparatively simple and the cost effective. Therefore, the converter can achieve lower manufacturing costs and has strong capability for high line and wide input range industrial applications. A prototype aiming at the telecom system of 200～400 V input, 48 V/5 A output, whose highest conversion efficiency was 95.3%, was built to verify the validity and applicability of the converter.
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Published: 19 March 2012
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新颖软开关谐振复位宽范围双管正激变流器
为了克服普通双管正激变流器因占空比受限于50%而影响效率以及不利于宽电压输入范围的缺点,提出一种采用新颖谐振复位技术的不对称双管正激变流器（DSFC）.和普通双管正激变流器相比,该新颖变流器在保持了低开关电压应力的同时,具有仅在普通脉宽调制（PWM）控制方式下即能将占空比拓宽至50%以上的能力；在不改变原有变压器结构的前提下,通过增加一个结构简单同时又成本低廉的辅助电路,该变流器则可在所有情况下实现主开关管的软开关.该新颖变流器非常适合应用于高电压、宽范围输入的场合以作为高效低成本的绿色节能电源.一台规格为200～400 V宽范围直流输入、48 V/5 A直流输出、最高转换效率可达95.3%的通信电源样机,验证了所述变流器的有效性和实用性.
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| ［1］ 钱照明,张军明,谢小高,等.电力电子系统集成研究进展与现状［J］.电工技术学报,2006, 21(3): 114.
QIAN Zhaoming, ZHANG Junming, XIE Xiaogao, et al. Progress in power electronic system integration［J］. Transactions of China Electrotechnical Society, 2006, 21(3): 114.
［2］ TAN F D. The forward converter: from the classic to the contemporary［C］∥ Proceeding of IEEE APEC. Dallas, Texas, USA: IEEE, 2002: 857863.
［3］ XI Youhao, JAIN P K, LIU Y F, et al. A self core reset and zero voltage switching forward converter topology［J］. IEEE Transactions on Power Electronics, 2000, 15(6): 11921203.
［4］ 石健将,何湘宁,严仰光.一种输入端自然均流/高电压增益组合式变换器研究［J］.电工技术学报, 2005, 20(3): 1418.
SHI Jianjiang, HE Xiangning, YAN Yangguang. Study on a combined converter with natural sharing inputcurrent and high voltage gain［J］. Transactions of China Electrotechnical Society, 2005, 20(3): 1418.
［5］ PETERSEN L. Advantages of using a twoswitch forward in singlestage power factor corrected power supplies［C］∥ Proceeding of IEEE INTELEC. Phoenix, Arizona, USA: IEEE, 2000: 325331.
［6］ XU J, CAO X, LUO Q. An improved twotransistor forward converter［C］∥ Proceeding of IEEE PEDS. Hong Kong: IEEE, 1999: 225228.
［7］ SPIAZZI G. A highquality rectifier based on the forward topology with secondaryside resonant reset［J］. IEEE Transactions on Power Electronics, 2003, 18(3): 725732.
［8］ GU Y, HANG L, CHEN S, et al. Research on control type soft switching converters［C］∥ Proceeding of IEEE PESC. Aachen, Germany: IEEE, 2004: 14701475.
［9］ 姚志垒,肖岚.一族零电压开关直流变压器［J］.电工技术学报,2006, 21(11): 8790,105.
YAO Zhilei, XIAO Lan. A family of zerovoltageswitching DC/DC transformers ［J］. Transactions of China Electrotechnical Society, 2006, 21(11): 8790,105.
［10］ COBOS J A, GARCIA O, SEBASTIAN A, et al. Resonant reset forward topologies for low output voltage on board converters［C］∥ Proceeding of IEEE APEC. Orlando, Florida: IEEE, 1994: 703708.
［11］ XI Youhao, JAIN P K. A forward converter topology employing a resonant auxiliary circuit to achieve soft switching and power transformer resetting［J］. IEEE Transactions on Industrial Electronics, 2003, 50(1): 132140.
［12］ HAMADA S, MII T, HIRAKI E, et al. Saturable reactor and lossless capacitorassisted softswitching asymmetrical PWM DCDC converter with forwardflyback transformer link［C］∥ Proceeding of IEEE PESC. Baveno, Italy: IEEE, 1996: 100105.
［13］ 董文辉,金天均,陈辉明.后级调整技术在多路输出反激电路中的运用［J］.电工技术学报,2005, 20(12): 6468, 75.
DONG Wenhui, JIN Tianjun, CHEN Huiming. Secondary side post regulation application in multiple output flyback converter［J］. Transactions of China Electrotechnical Society, 2005, 20(12): 6468, 75.
［14］ 陈乾宏,阮新波,严仰光.开关电源中磁集成技术及其应用［J］.电工技术学报,2004, 19(3): 18.
CHEN Qianhong, RUAN Xinbo, YAN Yangguang. The application of the magneticintegration techniques in switching power supply［J］. Transactions of China Electrotechnical Society, 2004, 19(3): 18. |
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