摘要
与传统PWM变频器相比,双级矩阵变换器(TSMC)存在中间直流环节,但不包含大容量直流环节储能电容。结合双级矩阵变换器、交流励磁发电技术和矢量控制的优点,建立了双级矩阵变换器励磁双馈风力发电系统。双级矩阵变换器采用双空间电压矢量调制实现整流级和逆变级的控制。通过双馈风力发电机空载并网及稳态运行控制模型,应用定子磁链定向控制策略使双馈风力发电机实现几乎无冲击电流并网和输出有功、无功功率的解耦控制。实验结果表明,双级矩阵变换器励磁双馈风力发电系统能够实现软并网,输出有功、无功功率可独立调节。
Two-stage matrix converter has a real DC link, but does not contain large DC-link energy storage capaci- tors compared with conventional PWM converters. Combined with the advantages of two-stage matrix converter, AC- excited generation technique and vector control scheme, the system of the doubly-fed wind power generation excited by two-stage matrix converter was established. The two-stage matrix converter realizes rectifier and inverter control with dual space voltage vector modulation. Based on the control models of idle-load grid-connection and running in steady state of doubly-fed wind power generator, it makes wind generator realize almost no impact current grid- connection and decoupling control of active power and reactive power by application the control strategy of the stator flux linkage orientation. The experimental results show that the two-stage matrix converter excitation doubly-fed wind power generation system can realize soft grid, output active and reactive power can be independent regulation.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第11期1992-1998,共7页
Acta Energiae Solaris Sinica
基金
陕西省重点学科建设专项资金(00X901)
关键词
双级矩阵变换器
双馈风力发电
变速恒频
定子磁链定向
two-stage stator flux matrix converter
doubly-fed wind power generation
variable speed constant frequency
linkage orientation
作者简介
通讯作者：钟彦儒（1950-），男，教授、博士生导师，主要从事电机及其控制、电力电子与电气传动等方面的研究。zhongyr@mail．xaut．edu．cn
