几何对偶在电路分析课程中的应用探索

电路分析课程中的知识点较多且显得离散,课程知识点的融会贯通是学习的难点。为了提高学生学习的主观能动性并达到举一反三的学习效果,几何对偶的知识被引入教学中,并形成了知识闭环自证讲解方式。该讲解方式结合了对偶电路构造方法中的几何对偶构造法和对偶方程转换法。实践表明,学生在掌握了几何对偶之后,更加能够将离散的课程知识在对偶性中统一起来.利用对偶性不仅节约了教学工作量.对培养学生探索知识奥妙的主观能动性亦有重要价值。     

Structural Optimization and Analysis of Magnetic Coupled Inductive Power Transfer System

Along with the prosperous of magnetic coupled inductive power transfer( MCIPT) technology which is widely used in industrial applications such as electric vehicle charging,the topology of double D coils( DD coils) with a spatial quadrature Q coil arises with great research interest. The Q coil, however, has been thoroughly studied by adding to the receiving side but seldom to the transmitting side. By using finite element simulation, this paper presents a preliminary study on the effectiveness of Q coil in the transmitting side,and its inner dimension is optimized for optimal compensating the misalignment between the transmitting and receiver sides. Simulation results show that the windings of the Q coil should be placed in the center of the aperture of the DD coils,and these results render a useful guidance for mechanical structural design and circuit controller design of MCIPT.