大学物理 ›› 2018, Vol. 37 ›› Issue (1): 25-29.doi: 10.16854 /j.cnki.1000-0712.170338

• 教学讨论 • 上一篇    下一篇

电容和电感正弦稳态电抗的直观解释

王俭,蔡旻,董兴法   

  1. 苏州科技大学电子与信息工程学院,江苏苏州215009
  • 收稿日期:2017-06-08 修回日期:2017-08-10 出版日期:2018-01-20 发布日期:2018-01-20
  • 作者简介:王俭( 1956—) ,男,安徽蚌埠人,苏州科技大学电子与信息工程学院教授,硕士,主要从事电路与电子
  • 基金资助:
    “十二五”江苏省高等学校重点专业建设项目( 电子信息工程280) 资助

An intuitive explanation for reactance of both capacitor and inductor in sinusoidal steady state

WANG Jian,CAI Min,DONG Xing-fa   

  1. School of Electronics and Information Engineering,Suzhou University of Science and Technology,Suzhou,Jiangsu 215009,China
  • Received:2017-06-08 Revised:2017-08-10 Online:2018-01-20 Published:2018-01-20

摘要: 从电感器的储能原理及充放磁链出发,以RL 电路为对象,采用一阶电路的求解方法,得到正负交替方波激励的稳 态下,电感电流受抑制的强弱与频率的关系,并通过仿真实验予以验证.对电感在直流动态电路暂态中的表现和性质,与其在 正弦交流电路稳态中的表现和性质,给出基于相同物理本质———储能和充放电———的解释.对理解和掌握储能元件正弦交流 稳态电抗的概念,进而对正弦交流稳态电路的教和学,起到积极的辅助作用.

关键词: 电抗, 周期, 频率, 充放电, 储能元件

Abstract: Starting from the principle which inductors follow for energy storage,taking a one-order RL circuit driven by positive-negative pulse source as object and using math deduction,we get the relation between frequency and inductor's reactance in the steady state. The relation is also verified by using simulating experiment. Based on the same physical senses,i.e.,energy storage and charging-discharging,the explanation for the performance and properties of inductor in transient of dynamic circuit and in sinusoidal steady state circuit is given. The results are helpful to understand and master the concept of reaction of energy storage elements in the sinusoidal steady state.

Key words: reactance, cycle, frequency, charge and discharge, energy storage element