电路原理及实验考试改革的一次实践--将单相交流电转变为三相交流电的研究

介绍了笔者在浙江大学“电路原理及实验”考试改革中所做的研究课题——“将单相交流电转变为三相交流电的研究”。该项研究提出了两种简单有效的变换方法，并设法将其运用到实际带载情况，去驱动三相电动机；通过理论分析、机辅仿真和实验验证，结果表明该方法在特定输出功率情况下是可行的。最后笔者阐述了考试改革的亲身体验，真切地感受到知识、能力、素质的培养在考试改革中得到了充分体现。

A Practice in the Exam Reform of "Circuit Theory and Experiment"--A project concerning on how to convert a single-phase AC source to three-phase one

This paper presents a project in the exam reform of circuit theory and experiment at Zhejiang University, which focuses on how to convert a single-phase AC source to three-phase one. Two simple and efficient methods are proposed in the project and applied to practice further. The results obtained form theory analysis, simulation and experiments show the feasibility of the proposed methods at given output power. At last, some experiences about the exam reform are also given. It is obvious that knowledge, ability and quality are cultivated all together in this reform.