考虑互漏感的海上直驱风电双绕组同步发电机建模
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摘要
海上直驱风电机组单机容量大,其发电机较多采用双绕组三相永磁电机。任意两个绕组间总互感既包括通过气隙耦合的气隙互感,又包括通过定子槽耦合的槽互感,即互漏感。在8～10 MW级大型机组发电机建模与控制中,互漏感不可忽略。本文考虑了互漏感的影响,推导出双绕组电机在转子dq旋转坐标系下的电磁和机械方程,建立了全阶模型,对比了考虑互漏感和不考虑互漏感时的电机模型差异,并提出一种参数等效法,将考虑互漏感后的模型转化为未考虑互漏感的模型,便于使用传统模型进行仿真与控制。最后基于模型等价性,给出了从有限元仿真软件参数导出本文双绕组电机模型参数的方法。
Offshore wind turbines have large capacity, and their gererators mostly use two-winding permanent magnetic synchronous generator(PMSG). The mutual inductance between two windings includes both the air-gap mutual inductance and the slot leakage mutual inductance. Taking the slot leakage mutual inductance into account for 8～10 MW PMSGs, this paper derives their full-order model. Based on the mathematic model, the influence of the slot leakage mutual inductance is discussed. And an equivalent parameter model that compatible with the conventional PMSG model is presented. Finally, the method of obtaining parameters of the proposed model from commercial FEM(Finite Element Method) software is given.
Offshore wind turbines have large capacity, and their gererators mostly use two-winding permanent magnetic synchronous generator(PMSG). The mutual inductance between two windings includes both the air-gap mutual inductance and the slot leakage mutual inductance. Taking the slot leakage mutual inductance into account for 8～10 MW PMSGs, this paper derives their full-order model. Based on the mathematic model, the influence of the slot leakage mutual inductance is discussed. And an equivalent parameter model that compatible with the conventional PMSG model is presented. Finally, the method of obtaining parameters of the proposed model from commercial FEM(Finite Element Method) software is given.
引文
[1]周宏林,杨耕.用于大型DFIG风电场的混合型HVDC系统中整流器的建模与控制[J].电工技术学报,2012,27(4):224-232
[2]周小丽.海上风电机组设备大容量趋势分析[J].红河水,2017,36(4):56-58
[3]周宏林,况明伟,吴建东.一种基于无速度传感器的永磁同步电机的转子角度、转速估计方法[J].电气传动,2012,43(3):3-6
[4]周宏林,代同振,于海坤.ZDC控制方式下的永磁直驱风电机组高速运行特性[J].东方电气评论,2014,28(2):54-58
[5]周宏林.海上风电机组的双绕组三相永磁同步发电机建模[J].东方电气评论,2019,33(1):8-12
[6]Analysis of electric machinery and drive systems (2nd ed.)[M].New York,NY:John Wiley & Sons,Ltd
[2]周小丽.海上风电机组设备大容量趋势分析[J].红河水,2017,36(4):56-58
[3]周宏林,况明伟,吴建东.一种基于无速度传感器的永磁同步电机的转子角度、转速估计方法[J].电气传动,2012,43(3):3-6
[4]周宏林,代同振,于海坤.ZDC控制方式下的永磁直驱风电机组高速运行特性[J].东方电气评论,2014,28(2):54-58
[5]周宏林.海上风电机组的双绕组三相永磁同步发电机建模[J].东方电气评论,2019,33(1):8-12
[6]Analysis of electric machinery and drive systems (2nd ed.)[M].New York,NY:John Wiley & Sons,Ltd