摘要
分别从异步电动机电磁转矩产生的物理机理、稳态等效电路及基于磁场观点T_(em)=?W_m/?δ_(sr)出发,推导了电磁转矩的各种公式表达。结合异步电动机启动调速制动及高性能直接转矩和磁场定向矢量控制的变频调速运动控制场合,解释了各种表达式的应用。从而无论在理论学习还是在实习实验等实践环节,均能指导电气专业学生更深刻地理解异步电动机瞬态稳态调速原理。
Based on the physical mechanism, the steady state equivalent circuit and viewpoint of magnetic field, various formulas of electromagnetic torque are derived respectively. This paper analyzes the application of various expressions of electromagnetic torque in the occasions of motor starting, speed regulation, braking and high performance DTC and FOC variable frequency speed control, in order to instruct electrical students to understand the motor speed regulation principle both in theory study and in experimental exercise.
作者
马鸿文
MA Hong-wen(School of Electrical and Power Engineering,China University of Mining and Technology,Xuzhou 221116,China)
出处
《实验室科学》
2018年第5期229-233,237,共6页
Laboratory Science
