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首页> 外文会议>Pulp and Paper Industry Technical Conference, 2009. PPIC '09 >Commutation of DC motors operated at reduced field current
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Commutation of DC motors operated at reduced field current

机译：以减小的励磁电流运行的直流电动机的换向

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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，直流电动机一直是造纸行业中变速驱动器的主力。通过改变所提供的电枢电压和/或励磁（磁场）电流，可以轻松控制直流电动机的速度。许多工厂询问了超出原始电动机额定值的电动机的运行情况。在电枢电压受驱动器限制的情况下，可以通过减小并联励磁电流来提高电动机速度，但并非不考虑振动，电机调整，电刷性能和可能的换向问题，因为电机不是在那些条件下设计和测试的。本文研究并提供了测试/现场数据，这些数据显示了磁场减弱对直流电机性能和维护的影响。

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