旋转导向用电机驱动电路的耐高温设计  

High temperature resistant design of motor drive circuit used in rotary steering

作　　者：张宇[1] 史晓锋[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《电子测量技术》2016年第5期18-21,共4页Electronic Measurement Technology

摘　　要：无刷直流电机驱动电路是旋转导向系统的一个重要组成部分。而井下高温工况对驱动电路的温升控制提出了更高的要求。设计了一款基于SiC MOSFET的耐高温电机驱动电路,从整体设计的角度分析了导致电路温升的几种因素,并结合电机设计和电路工作点设定,深入探究了SiC MOSFET安全工作特性。实验结果表明该电路具有耐高温、低温升、高可靠的特点,并在旋转导向系统得到成功应用。该设计的成功可为其他耐高温电机驱动电路的设计提供技术参考和依据。Brushless DC motor drive circuit is an important part of rotary steering system.High temperature work condition bring higher request of the temperature rise control of motor drive circuit.This article designs a high temperature resistant motor drive circuit based on Silicon carbide（SiC）MOSFET and analyses the cause factors of temperature rise from a general design perspective and analyses the security working characteristics of SiC MOSFET in deeply combined with the motor designing and the setting system＇s working situation.Experimental results show that this circuit has characteristics of high temperature resistance,low temperature rise,high reliability and has used in rotary steering system successfully.In particular it provides technical references and depends in high temperature motor drive circuit designing.

关 键 词：旋转导向 碳化硅MOSFET 无刷直流电机驱动 耐高温 

分 类 号：TM361[电气工程—电机]