定子双绕组异步电机变频交流发电系统辅助励磁电容和滤波电感的优化设计

发布时间：2018-08-04 11:27

【摘要】：提出了定子双绕组异步电机(DWIG)变频交流发电系统中的两个关键参数——辅助励磁电容和滤波电感的优化设计方法。利用DWIG控制绕组无功电流解析表达式对不同转速和负载条件下的控制绕组无功电流进行了分析,获得了它的变化规律,进而确立了辅助励磁电容的优化原则。待辅助励磁电容优化后,根据控制绕组最大无功电流及电流快速响应要求来确定滤波电感的上限;按照抑制电流谐波能力要求来确定滤波电感的下限。样机实验结果表明,按所提优化设计方法选取的辅助励磁电容和滤波电感是合理、有效的,能保证系统稳定运行,且实现了控制变换器容量的最小化。
[Abstract]:In this paper, the optimal design method of auxiliary excitation capacitance and filter inductance is presented for the (DWIG) frequency conversion AC power generation system of stator double-winding asynchronous motor. The reactive current of the control winding under different rotational speed and load is analyzed by using the analytical expression of reactive current of DWIG control winding, its variation law is obtained, and the optimization principle of auxiliary excitation capacitance is established. After the auxiliary excitation capacitance is optimized, the upper limit of the filter inductor is determined according to the requirement of the maximum reactive current and the fast response of the current in the control winding, and the lower limit of the filter inductor is determined according to the requirement of restraining current harmonic ability. The experimental results of the prototype show that the auxiliary excitation capacitance and filter inductor selected according to the proposed optimization design method are reasonable and effective, which can ensure the stable operation of the system and minimize the capacity of the control converter.
【作者单位】：南京航空航天大学江苏省新能源发电与电能变换重点实验室;
【基金】：国家自然科学基金(51277095) 航空科学基金(2012ZC52048) 江苏省普通高校研究生科研创新计划(CXZZ11_0209) 中央高校基本科研业务费专项资金资助项目
【分类号】：TM343

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