油田探测用高温无刷直流电动机驱动控制电路设计  

Design of a High Temperature Brushless DC Motor Drive and Control Circuit for Oil Well Detecting

作　　者：胡建辉[1] 邹继斌[1] 江善林[1] 

机构地区：[1]哈尔滨工业大学电气工程系,哈尔滨150001

出　　处：《电子器件》2006年第2期528-531,共4页Chinese Journal of Electron Devices

摘　　要：设计适应油井高温环境的无刷直流电动机驱动电路是一项重要的研究课题。采用耐高温的锁定型霍尔元件和钐钴永磁转子分别构成位置与速度传感器，并设计相应的速度信号倍频电路与位置信号译码电路。设计了一种基于锁相环的速度闭环控制电路，进行电机的稳速控制，通过限流电路改变电机系统的特性，实现恒功率控制。试验结果表明，无刷直流电动机系统可以在--30--180℃环境下稳定运行。采用数字控制方式保证了电机系统特性的稳定性。It is valuable research to design high temperature brushless de motor drive and control circuit for oil well detecting. Fireresistant Hall device and SmCo rotor is used to design position and speed sensor, and the corresponding doubling circuit and decoding circuit is designed. A speed control circuit based on phase-locked loop（PLL） is designed to achieve the constant speed operation, and a current-restricting circuit is designed to achieve the constant power operation. Experimental results show that the designed brushless de motor can operate stably under -30-180℃. The stability of motor characteristic is guaranteed by the digital control strategy.

关 键 词：无刷直流电动机 高温 锁相环 脉宽调制 

分 类 号：TM33[电气工程—电机]