串联谐振感应加热逆变电源的研制
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摘要
本文以串联谐振感应加热电源为研究对象,首先分析了现代感应加热的发展现状和趋势,对几种较为常见的功率调节方式予以介绍,并选择扫频控制作为本课题的控制方案,对扫频控制中一些环节予以重点介绍,结合实际,对实际应用中的功率调节闭环参数选取,以及限相环设计等实际电路设计予以阐述。研制了一台超音频电源。
针对在低阻抗负载下,扫频控制中出现的关断角度,关断电流过大问题,采取了电流和相位双反馈的策略,使得在低阻抗下关断电流得以减小,同时对于新控制下,在额定阻抗时的功率调节存在不可控区域现象,采取了变相位反馈比例系数的策略,使得在额定阻抗下的功率不可控区域大大减小,并建立了相位反馈比例系数与限相角度之间的关系表,这对实际调试中的参数选取,有一定的实际意义。最后通过实际的实验验证了上述结论
针对电压型串联谐振的保护问题,本文在分析了几种短路情况下的逆变器的工作状态下分析,提出了相应的保护方案。
最后对于感应加热的扩容问题,分析了一种较有前途的拓扑,LLC负载谐振,较为详细的分析了这种拓扑的负载特性,以及这种拓扑与LC之间的转换,以及对实际应用中应注意的一些特性加以阐述,相对于LC串联谐振,LLC在感应加热的扩容上有拓扑上优势,就LLC拓扑的双机并联中的环流抑制机理等予以分析,为以后的研究工作打下基础。
This paper present a detail analysis of a PFM control on IGBT series resonant inverter for induction heating application. The control consists of three loops, power regulation loop, phase limitation loop, voltage limitation loop, which are analyzed in this paper, the structure of the compensation network and parameter are derived. The implementation of the control circuit is described and experiment results are shown.For the drawback of big switching current and angle in an over loading condition, current and phase double feedback are presented, which can reduce switching current in over loading condition, so reducing switching loss, and it do not change power regulation under rated load with a alterable coefficient of phase feedback, experiment results has prove itSome protect strategy are also presented based on the detail analysis on the short circuit event in the inverter or inductorium, some simulation and experiment results has prove it.To increase the power level of induction heating application, a new topology of LLC resonant are analyzed, which can restrain the shunt current of parallel inverter, the paper also give some compare in control strategy between LC and LLC, some simulation result are given.
针对在低阻抗负载下,扫频控制中出现的关断角度,关断电流过大问题,采取了电流和相位双反馈的策略,使得在低阻抗下关断电流得以减小,同时对于新控制下,在额定阻抗时的功率调节存在不可控区域现象,采取了变相位反馈比例系数的策略,使得在额定阻抗下的功率不可控区域大大减小,并建立了相位反馈比例系数与限相角度之间的关系表,这对实际调试中的参数选取,有一定的实际意义。最后通过实际的实验验证了上述结论
针对电压型串联谐振的保护问题,本文在分析了几种短路情况下的逆变器的工作状态下分析,提出了相应的保护方案。
最后对于感应加热的扩容问题,分析了一种较有前途的拓扑,LLC负载谐振,较为详细的分析了这种拓扑的负载特性,以及这种拓扑与LC之间的转换,以及对实际应用中应注意的一些特性加以阐述,相对于LC串联谐振,LLC在感应加热的扩容上有拓扑上优势,就LLC拓扑的双机并联中的环流抑制机理等予以分析,为以后的研究工作打下基础。
This paper present a detail analysis of a PFM control on IGBT series resonant inverter for induction heating application. The control consists of three loops, power regulation loop, phase limitation loop, voltage limitation loop, which are analyzed in this paper, the structure of the compensation network and parameter are derived. The implementation of the control circuit is described and experiment results are shown.For the drawback of big switching current and angle in an over loading condition, current and phase double feedback are presented, which can reduce switching current in over loading condition, so reducing switching loss, and it do not change power regulation under rated load with a alterable coefficient of phase feedback, experiment results has prove itSome protect strategy are also presented based on the detail analysis on the short circuit event in the inverter or inductorium, some simulation and experiment results has prove it.To increase the power level of induction heating application, a new topology of LLC resonant are analyzed, which can restrain the shunt current of parallel inverter, the paper also give some compare in control strategy between LC and LLC, some simulation result are given.
引文
[1] 潘天明,现代感应加热装置,冶金工业出版社,1996,12
[2] 潘天明,工频和中频感应炉,冶金工业出版社,1983,8
[3] 杨思俊,朱伯年,晶闸管中频电源基本知识,浙江科学出版社,1989,11
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[2] 潘天明,工频和中频感应炉,冶金工业出版社,1983,8
[3] 杨思俊,朱伯年,晶闸管中频电源基本知识,浙江科学出版社,1989,11
[4] 谢燮揆,整体感应加热表面淬火法,金属热处理,1993,(7):45～47
[5] 张玉英[1],王永宏[1],赵国相[2],中频感应加热装置的结构及工作原理,石油矿场机械,2004,33(4):81～82
[6] 张三慧,大学物理学(电磁学)[M].,北京:清华大学出版社,1999,
[7] 张问骅,电力电子技术与机电一体化(下),新技术应用,1990,(2):9～10
[8] Chaboudez C, Clain S, Glardon R, Rappaz J, Numerical Modelling of Induction Heating of Long Workpieces, Magnetics, IEEE Transactions on Magnetics, IEEE Transactions on, 1994, 30 (6): 5028～5037
[9] 张炳辉,串联谐振中频感应熔炼炉的技术综述,特种铸造及有色合金,2000,(4):30～33
[10] 夏思淝,党福祥,等,新型晶闸管中频感应加热电源,电力电子技术,2002,36(4):21～23
[11] 郭均高[1],张爱萍[2],等,美国感应热处理的最新发展趋势,国外金属热处理,2002,23(6):1～3
[12] 荣念孙,日本的全晶体管化高频感应加热电源装置,工业加热,1991,(3):51～51
[13] 戴育航,Igbt晶体管模块中频感应加热炉,铸造,2000,49(9):548～550
[14] 张仲超,陈辉明,50khz Igbt超音频感应加热电源,电力电子技术,1995,29(2):6～8
[15] 沈旭,吴兆麟,20kw/300khz高频感应加热电源,电力电子技术,1996,30(2):10～13
[16] 尹正凯,王宣银,吴江宁,大功率集肤效应电伴热系统的研究,浙江大学学报:工学版,2004,38(5):636～639
[17] 基于晶闸管的柔性交流输电控制装置,高压电器,2005,41(4):272～272
[18] 杨威,Gtr运行故障机理分析及相应对策,昆明理工大学学报,1996,21(1):75～77
[19] 赵军平,章林文,李劲,基于Mosfet的固体开关技术实验研究,强激光与粒子束,2004,16(11):1481～1484
[20] Forest F, Laboure E, Costa F, Gaspard J Y, Principle of a Multi-load/Single Converter System for Low Power Nduction Heating, Power Electronics, IEEE Transactions on Power Electronics, IEEE Transactions on, 2000, 15 (2): 223～230
[21] Byoung-kuk L, Jin-woo J, Bum-seok S, Dong-seok H, A New Half-bridge Inverter Topology with Active Auxiliary Resonant circuit Using Insulated Gate Bipolar Transistors for Induction Heatingapplic ations, Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE, 1997, 1232～12372
[22] Dede E J, Esteve V, Garcia J, Navarro A E, Analysis of Losses and Thermal Design of High-power, High-frequency resonant Current Fed Inverters for Induction Heating, Industrial Electronics, Control, and Instrumentation, 1993. Proceedings of the IECON '93., International Conference on, 1993, 1046～10512
[23] Dede E J, Esteve V, Gonzalez J V, Garcia J, A 12 Kw/250 Khz Series Resonant Converter for Induction Heating, AFRICON '92 Proceedings., 3rd AFRICON Conference, 1992, 91～94
[24] Dede E J, Jordan J, Esteve V, Cases C, New Investigations On Short-circuit Behaviour of Current-fed Inverters for Induction Tube Welding, Power Electronics and Drive Systems, 2001. Proceedings., 2001 4th IEEE International Conference on, 2001, 760～7632
[25] 王正仕,Igbt过流保护方法的研究,浙江大学学报(自然科学版),1997,31(1):42～48
[26] Carrasco J A, Garcia R, Ejea J B, Dede E J, Parallel Power Regulation Techniques for Resonant Converters, Power Electronics Congress, 1996. Technical Proceedings. CIEP '96., V IEEE International, 1996, 277～281
[27] Sanchis-kilders E, Espi J M, Carrasco J A, Ramirez D, New Application of an Llc Full Bridge Inverter Topology for Coronageneration In Plastic Industry, Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE, 2001, 193～1981
[28] Bonert R, Lavers J D, Simple Starting Scheme for a Parallel Resonance Inverter for Nduction Heating, Power Electronics, IEEE Transactions on Power Electronics, IEEE Transactions on, 1994, 9 (3): 281～287
[29] Dede E J, Esteve V, Jordan J, Gonzalez J V, On the Design and Control Strategy of High Power, High Frequencyconverters for Tube Welding Applications, Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the, 1993, 257～264
[30] Garbulsky G D, Marino P, Pignotti A, Numerical Model of Induction Heating of Steel-tube Ends, Magnetics, IEEE Transactions onMagnetics, IEEE Transactions on, 1997, 33 (1): 746～752
[31] 林渭勋,半导体感应加热电源,基础自动化,1997,4(4):1～5
[32] Gamage L, Ahmed T, Sugimura H, Chandhaket S, Series Load Resonant Phase Shifted Zvs-pwm High-frequency Inverter with a Single Auxiliary Edge Resonant Ac Load Side Snubber for Induction Heating Super Heated Steamer, Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth international Conference on, 2003, 30～371
[33] Ogiwara H, Nakaoka M, Zcs High Frequency Inverter Using Sit for Induction Heating Applications, Electric Power Applications, IEE Proceedings-Electric Power Applications, IEE Proceedings-, 2003, 150 (2): 185～192
[34] 沈锦飞,颜文旭,惠晶,吴蕾,串联谐振式高频感应焊接逆变电源,焊接学报,2003,24(5):77～80
[35] Zhaolin W, Shuiquan X, The Dynamic Characteristic Research of Induction Heating Power station, Industrial Electronics, 1992, Proceedings of the IEEE International Symposium on, 1992, 528～5332
[36] 赵晶,齐铂金,等,感应加热中功率延伸电缆结构形式的优选设计,北京航空航天大学学报,2002,28(6):629～632
[37] 吴清平,靖树君,等,感应回热炉的研制,煤矿机械,2000,(8):42～44
[38] 徐晓亮,固态高频感应加热技术研究,浙江大学博士论文,1997,4
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