隔爆型变频一体化永磁同步电动机研制  

Development of explosion-proof permanent magnet synchronous motor with variable-frequency drive integration

作　　者：张艳敏 苏浩 蒋青璋 

机构地区：[1]青岛海西电机有限公司,山东青岛266550

出　　处：《工矿自动化》2017年第11期98-102,共5页Journal Of Mine Automation

摘　　要：国内刮板输送机转动惯量大,启动转矩大,导致其驱动电动机的启动比较困难,普通的异步电动机难以胜任。针对该问题,研制了1 200kW隔爆型变频一体化永磁同步电动机。该电动机采用优化的电磁方案,将电磁负荷控制在合理范围内,可满足弱磁调速要求;结构设计充分考虑变频供电特点、隔爆性能要求及体积和质量限制,符合相关防爆要求,且结构紧凑;冷却方案设计充分考虑散热能力和余量,确保电动机有合理的温升限值。有限元分析结果表明,该电动机主轴挠度和强度、铁芯隔磁桥强度均在合理范围内。样机试验结果表明,该电动机具有良好的恒转矩特性和调速性能。Domestic scraper conveyor has big rotary inertie and starting torque,which makes starting of its driving moter difficult,so the ordinary asynchronous motors cann＇t fulfill the task.In view of the problem,explosion-proof permanent magnet synchronous motor with variable-frequency drive integration was developed.The motor uses optimized electromagnetic scheme to control electromagnetic load in a reasonable range,and meet requirements of weak magnetic speed control.Characteristics of variable frequency power supply,explosion-proof performance requirements and volume and weight restrictions are fully considered during structural design,the structure is compact and in line with relevant explosion-proof requirements.Cooling capacity and margin are fully considered in cooling program design to ensure that the motor has a reasonable temperature rise limit.The results of finite element analysis show that deflection and strength of spindle,and strength of core bridge are within a reasonable range.The prototype test results show that the motor has good constant torque characteristics and speed regulation performance.

关 键 词：刮板输送机 永磁同步电动机 变频一体化 启动转矩 弱磁调速 水冷 

分 类 号：TD614[矿业工程—矿山机电]