定子双绕组异步发电机航空变频交流发电系统不对称运行性能分析
收稿日期: 2014-01-15
修回日期: 2014-07-27
网络出版日期: 2014-08-13
基金资助
国家自然科学基金(51277095);航空科学基金(2012ZC52048)
Asymmetric Operation Performance for Variable Frequency AC Generation System Based on Dual Stator-winding Induction Generator
Received date: 2014-01-15
Revised date: 2014-07-27
Online published: 2014-08-13
Supported by
National Natural Science Foundation of China (51277095); Aeronautical Science Foundation of China (2012ZC52048)
在航空变频交流电(AC)源中,为保证机载用电设备的正常工作,发电系统应具备适应不对称负载的能力.为了分析基于定子双绕组异步电机(DWIG)的变频交流发电系统带不对称负载运行的性能,提出了一种负载多端口网络不对称分析方法.首先,推导出三相四线制不对称负载的多端口网络等效电路;其次,将其与DWIG的正序、负序和零序等效电路结合,建立完整的DWIG不对称运行的等效模型;最后,根据该模型列写相应的方程并进行求解,最终得到DWIG不对称运行时的输出电压.基于该分析方法,可实现对该发电系统带不对称负载运行性能的定量分析,并得到了电机参数对于输出电压不对称度的影响.样机计算结果与实验结果较一致,验证了DWIG具有较强的带不对称负载的能力.
庄圣伦 , 黄文新 , 卜飞飞 , 苏宁 . 定子双绕组异步发电机航空变频交流发电系统不对称运行性能分析[J]. 航空学报, 2014 , 35(12) : 3415 -3424 . DOI: 10.7527/S1000-6893.2014.0170
In the variable frequency AC aviation power system, the power system should have the ability to carry the asymmetric load in certain situations. In order to verify the ability of dual stator-winding induction generator (DWIG) variable frequency AC power systems with asymmetric load, a new analysis method of asymmetric operation based on multi-port network load is proposed. First of all, the equivalent circuit of three-phase four-wire asymmetric load is deduced; secondly, the equivalent positive, negative and zero sequence circuit is put forward; thirdly, the asymmetric operation equivalent circuit of DWIG is obtained by combining the above two; finally the output voltage asymmetric degree is precisely calculated by solving the nonlinear equation. The quantitative analysis can be reached by the proposed method, meanwhile, the relationship between motor parameters and output voltage asymmetry is also obtained. The experimental results prove the correctness and effectiveness of the method and verify that DWIG has a good asymmetry load carrying capacity.
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