电力电子电路在加工机械飞轮消除中的应用

V. Jape, H. Suryawanshi, J. Modak
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引用次数: 1

摘要

一般来说,在任何加工机械的设计中,特别是在具有一定扭矩特性的加工机械的设计中,消除飞轮是很有可能的。人们认为,通过适当的电力电子设备接口,这是可能的。从加工机器上消除飞轮有助于减少任何加工机器的动力传动系统的扭转振动。这样可以减少电力传输系统部件的疲劳,从而延长设备的功能故障。停机时间将大大减少,通过不间断生产获得的利润将很高。本文提出了一种方便的电力电子电路和合理的控制方法,用于感应电动机飞轮更换,需要在电动机轴上产生恰好等于需求转矩的供电转矩。为了满足这一要求,在25毫秒的时间内对需求扭矩特性进行采样。在该问题的解决方案中,通过调节晶闸管的发射角来满足每个样品的转矩要求,从而调节电机端子的电源电压。根据供电频率的不同,需求转矩特性的采样周期可以改变。本文的重点是发展这一概念的功能可行性的细节。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Application of Power Electronic Circuitry for Elimination of Flywheel in Process Machines
It is felt highly probable to eliminate flywheel from the design of any process machine in general and for process machines with a certain demand torque characteristics in particular. It is felt that by proper interfacing of power electronic devices this may be possible. Elimination of flywheel from process machines helps reducing torsional vibrations in the power transmission system of any process machine. This should reduce fatigue in the components of power transmission system thereby prolonging equipment functional failure. Down time will be much less and profit earnings through uninterrupted production would be high. This paper proposes a convenient power electronic circuitry with reasonable control approach for the flywheel replacement of an induction motor for which it is necessary to generate supply torque at motor shaft exactly equal to demand torque. To meet this requirement, demand torque characteristic is sampled at 25 msec. In proposed solution to this problem, the torque requirement at every sample is met by adjusting the firing angle of thyristors which in turn adjusts the supply voltage at motor terminals. Depending on supply frequency the sampling period for demand torque characteristic may be varied. The present paper has a focus of evolving the details of functional feasibility of this concept only.
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