基于VB的电机旋转磁场模拟实现

Simulative Realization of Electrical Machines' Rotating Magnetic Field Based on Visual Basic

旋转磁场是电机理论教学中的重要教学内容。通过分析三相交流电机内部磁场的实际运动情况,采用功能强、效率高的编程工具V isua l Basic,结合多媒体技术,制作了一套完整的旋转磁场动态演示系统。文中介绍了演示系统的设计思路、软件结构以及实现方法。演示系统具有很好的交互性和生动性,能够形象直观地描述三相对称交流电流与三相交流电机内部旋转磁场的关系,展示出三相交流电机内部磁场的实际运动情况。

Rotating magnetic field is an important content for teaching of electrical engineering. The actual novement of magnetic field in three-phase alternating current machines is analyzed. A system of dynamic simulation of electrical machines＇ rotating magnetic field is set up by combining powerful and efficient Visual Basic with multimedia techniques. This paper introduces the design, the structure of software and implementation of the system. Being integrated and vivid, the system is proven to be able to describe perfectly the relation between symmetrical three-phase alternating current and rotating magnetic field in three-phase alternating current machines, and to demonstrate perfectly magnetic field＇s actual movement in three-phase alternating current machines.