升压逆变器独立应用时的动态建模和稳定性分析
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摘要
传统电流源型逆变器采用相量脉宽调制后即可实现升压逆变器,且升压比较高。为了实现升压逆变器在可再生能源系统中的推广,对升压逆变器的动态特性进行了建模分析。首先,理论推导了升压逆变器的大信号模型和小信号模型,以及对应的dq等效电路。然后,基于实验室小功率升压逆变器样机对所建模型的正确性进行了试验验证。最后,基于升压逆变器的小信号模型分析了升压逆变器系统的稳定性。
The Boost inverter can be achieved by conventional current source inverter with phasor pulse width modulation,and the boost ratio is very high. In order to realize the potential capabilities of Boost inverter in renewable energy system,the dynamic characteristics of Boost inverter were analyzed with models. Firstly,the small signal model and the large signal model of the Boost inverter were deduced theoretically,and the corresponding dq equivalent circuit was deduced. Then,based on the laboratory small power Boost inverter prototype,the validity of the model is verified.Finally,the stability of the Boost inverter system was analyzed based on the small signal model of the Boost inverter.
The Boost inverter can be achieved by conventional current source inverter with phasor pulse width modulation,and the boost ratio is very high. In order to realize the potential capabilities of Boost inverter in renewable energy system,the dynamic characteristics of Boost inverter were analyzed with models. Firstly,the small signal model and the large signal model of the Boost inverter were deduced theoretically,and the corresponding dq equivalent circuit was deduced. Then,based on the laboratory small power Boost inverter prototype,the validity of the model is verified.Finally,the stability of the Boost inverter system was analyzed based on the small signal model of the Boost inverter.
引文
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[15]程世超,刘彦呈,郭昊昊.基于SVPWM的逆变器死区效应分析与补偿[J].微特电机,2016,44(10):86-88.
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[2]胡茂,秦岭,谢少军,等.混合调制单相Cuk集成式升压逆变器研究[J].电气传动,2017,47(5):39-44.
[3]周玉斐,黄文新,赵萍.三相耦合电感单级升压逆变器非隔离光伏并网发电系统[J].电工技术学报,2015,30(6):190-199.
[4]宋文磊,张广明,邓歆.一种高效率低纹波电流的光伏电源逆变器设计[J].电力电子技术,2016,50(6):20-22.
[5]贾谊堃,张少如,刘玲玲,等.改进型开关升压逆变器[J].电气传动,2016,46(11):33-36.
[6]杜强,高锋阳,乔垚,等.功率前馈的准Z源光伏并网逆变器Quasi-PR控制[J].高电压技术,2017,43(10):3322-3329.
[7]周玉斐,黄文新,赵萍,等.基于耦合电感单级升压逆变器的光伏并网发电系统[J].电网技术,2013,37(7):1808-1813.
[8]张加胜,张磊.四象限变流器的一种统一性建模及分析方法研究[J].中国电机工程学报,2004,24(8):39-44.
[9]孙栩,孔力.基于状态空间平均法的新型高压直流输电系统稳态建模分析[J].高压电器,2007,43(6):427-430.
[10]Krein P T,Bentsman J,Bass R M,et al.On the Use of Averaging for the Analysis of Power Electronic Systems[J].IEEE Transactions on Power Electronics,1990,5(2):182-190.
[11]Shu Z,He X,Wang Z,et al.Voltage Balancing Approaches for Diode-clamped Multilevel Converters Using Auxiliary Capacitor-based Circuits[J].IEEE Transactions on Power Electronics,2013,28(5):2111-2124.
[12]马皓,林钊,王小瑞.不平衡非线性负载下三相逆变器的建模与控制[J].电工技术学报,2015,30(18):83-95.
[13]秦昌伟,王群京,陈权,等.基于MOPSO的三电平SHEPWM方法研究[J].电力电子技术,2015,49(6):1-3.
[14]周明磊,游小杰,王琛琛,等.特定次谐波消除调制方式的谐波特性分析[J].电工技术学报,2013,28(9):11-20.
[15]程世超,刘彦呈,郭昊昊.基于SVPWM的逆变器死区效应分析与补偿[J].微特电机,2016,44(10):86-88.
[16]张帅,牛宏侠,侯涛.三电平逆变器SVPWM参考矢量区域快速判断研究[J].电机与控制应用,2015,42(7):29-33.