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Commutation of DC Motors Operated At Reduced Field Current

机译：在缩小场电流下操作的DC电机换向

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摘要

DC motors have been the workhorse of variable speed drives in the paper industry for many years. DC motor speed is easily controlled by varying the supplied armature voltage and/or excitation (field) current. Many mills have inquired about operating motors beyond the original motor rating. With armature voltage limited by the drive, motor speed may be increased by reducing the shunt field current, but not without consideration of vibration, machine adjustment, brush performance, and possible commutation issues because the machine was not designed and tested at those conditions. This paper examines and presents test/field data displaying the effects of field weakening on DC machine performance and maintenance.
机译：多年来，DC电机一直是造纸行业的变速驱动器的主流。通过改变所提供的电枢电压和/或激励（现场）电流来容易地控制DC电动机速度。许多磨坊都询问了超出原始电机额定值的操作电机。通过通过驱动器限制的电枢电压，可以通过减小分流场电流来增加电机速度，但没有考虑振动，机器调节，刷子性能和可能的换向问题，因为机器未在这些条件下设计和测试。本文审查并介绍了测试/现场数据，显示现场弱化对直流机器性能和维护的影响。

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