中文摘要：

混合励磁同步电机（hybrid excited synchronous machine,HESM）是一种宽调速电机,它结合了永磁同步电机和电励磁同步电机的优点,又克服了它们各自的缺点。因此,它在宽速度运行范围的风力发电系统和电驱动系统具有广阔的应用前景。该文主要论述了混合励磁同步电机的基本特点,分析了几种典型的混合励磁同步电机的结构及工作原理,提出了一种新的混合励磁同步电机拓扑结构。在此基础上,推导了混合励磁同步电机的数学模型。基于分区控制策略,在低速区和高速区,分别研究了几种混合励磁同步电机控制技术,并对这些技术做了详细比较。针对目前混合励磁同步电机控制技术存在的不足之处,提出了一种新的效率最优控制策略。最后,给出了混合励磁同步电机及控制技术的发展趋势,展望了它的应用前景。

英文摘要：

The hybrid excited synchronous machines（HESMs） can operate in a wide-range speed, which incorporates the advantages of the permanent magnet synchronous machine（PMSM） and the electrical excitation synchronous machine（EESM）, and avoids their shortcomings. So it has been widely applied in power generation and drive systems over a wide range of speeds. In this paper, the basic characteristics of HESM are discussed, and several kinds of the typical structure and operation principles of HESM are analyzed. A novel topology of HESM is proposed. The mathematic model of HESM is derived. Based on stage control, the control system is established. Several control strategies are analyzed in both low and high speed regions. Based on the analysis of the problem existing in the control technology of HESM, a novel efficiency optimization control strategy of HESM is proposed. At last, the study direction and tendency of HESM and its control technology are discussed. The application prospect of HESM is predicted.