中文摘要：

为研究励磁绕组匝间短路的故障机理,通过理论分析故障情况下A1553样机转子绕组和定子绕组产生的磁动势性质及其在气隙磁场中的相互作用,论证了定子相绕组内部环流为分数次谐波、而转子电流为基波及整数次谐波的稳态故障特征,并且说明故障谐波特征主要受定子绕组的分布与联接方式影响,与电机极对数、励磁绕组的短路匝数及故障位置也有关系。对A1553样机进行了单机空载工况下的励磁绕组匝间短路实验,通过对稳态实验电流的快速傅里叶分析,验证了上述故障特征和理论分析方法的正确性。理论分析和实验表明,转子匝间短路的故障特征与机端外部短路故障、定子绕组内部短路故障等其它故障都有所不同,为故障检测提供了依据。

英文摘要：

Aimed at optimization of the transmission power and efficiency of inductively coupled power transfer（ICPT） system,the relations between the mutual inductance and transmission power and efficiency under four typical topologies of ICPT system were analyzed,and the mutual inductance of ICPT system was optimized for achieving maximum power transfer,at the same time,the applicable condition for the optimized mutual inductance was given.Furthermore,in order to improve the ICPT system efficiency under maximum power transfer condition with the primary side series tuned,the paper presented a novel evaluation index.The index is a synthetic performance index which takes system output power,efficiency,cost and reliability into account.With this index,in meeting of the condition of power transmission,the mutual inductance was optimized,and a global optimization design method for the ICPT system was also realized as well.Finally,simulation and experiment results verified the analysis and the optimization design method.