并联直流传动装置扰动的分析与克服

来源期刊：冶金自动化2010年第3期

论文作者：刘金波

文章页码：61 - 64

关键词：直流传动； 冲击负载； 负载扰动； 电压扰动； 弱磁

Key words：DC drive； impact load； load disturbance； voltage fluctuation； flux-weakening point

摘    要：随着产能的扩大,韶钢中板轧机主传动系统出现了频繁的过流跳闸问题。在传动系统电枢速度环比例系数不能过大的情况下,通过对并联供电直流传动系统负载扰动和电压扰动的分析,提出适当降低弱磁点来防止传动系统由扰动产生的过流跳闸。实践证明,此方法可以有效抑制扰动,保证了传动系统的平稳运行。

Abstract: Operating in heavy work duty mode,the main drive system of the plate mill at Guangdong Shaoguan Iron and Steel Group Co.,Ltd.was troubled with frequent trip-offs initiated due to over-current.In line with the constraint on the proportional gain of the armature speed loop,analysis on the drive′s load disturbance and voltage fluctuation indicates that appropriately reducing the flux-weakening point is advantageous to prevent over-current trip of the drive system.Practical tests,applying this method,show that the drive system is effectively improved its ability to resist to the disturbances and ensured more smooth operations in the rolling process.