锁相技术在变频调速系统中的应用  

Aplication of Phase-locked Technique for Variable Frequency Speed Control System

作　　者：张雪瑞[1] 刘彦彬[1] 孙力[1] 

机构地区：[1]哈尔滨工业大学

出　　处：《微特电机》1996年第6期29-31,共3页Small & Special Electrical Machines

摘　　要：采用锁相环（ＰＬＬ）技术来控制电动机转速，可实现精确的速度调节．其精度较一般模拟闭环控制系统高．本文针对变频调速开环控制系统的调速精度不高的缺陷，提出一种锁相变频调速系统，来实现高精度的感应电动机速度闭环控制，并对此系统的稳定性、动态特性及精确度等方面的做了研究。t can achieve high precision regulation of rotating speed to use phaselocked loop technique to control rotating speed of the induction motor. Its precision is higher than the common analogical closed - loop control system. In order to solve the problem of the low precision of the variable frequency variable speed open loop control system. This paper presents a kind of phase - locked variable frequency variable speed system to achieve the high precision's closed -loop control of induction-motor rotating speed and study the stability, dynamic character and precision of this system etc.

关 键 词：锁相技术 变频调速 应用 电动机 

分 类 号：TM921.51[电气工程—电力电子与电力传动] TM320.12