CAJ | 학술논문

介绍了一种无转速传感器抽油机异步电机的在线监测系统的软、硬件设计。论述了通过实时采集抽油机异步电机的三相电压和电流,计算电机的三相有功功率、无功功率和功率因数的方法。并利用电机模型参数,根据抽油机异步电机工作的特点,分析了实时计算电机定子磁链的幅值和相位的方法。同时提出了结合坐标变换下的定子电流计算,实时获取抽油机异步电机电磁转矩及转速的一般方法。
개소료일충무전속전감기추유궤이보전궤적재선감측계통적연、경건설계。논술료통과실시채집추유궤이보전궤적삼상전압화전류,계산전궤적삼상유공공솔、무공공솔화공솔인수적방법。병이용전궤모형삼수,근거추유궤이보전궤공작적특점,분석료실시계산전궤정자자련적폭치화상위적방법。동시제출료결합좌표변환하적정자전류계산,실시획취추유궤이보전궤전자전구급전속적일반방법。
The essay has introduced the software and hardware design of the on-line monitoring system used in the induction motor of pumping unit with speed--sensorless. According to the working characteristics of the induction motor in the pumping unit, the essay has also discussed the analysis of the real-time calculation of the amplitude and phase of the stator flux in the motor by using the method of the real-time data acquisition of three-phase voltage and current in the induction motor of pumping unit, calculation of the three-phase motor active power, reactive power and power factor, referring to the motor parameters. At the same time, the essay put forward the method of real-time acquisition of the electromagnetic torque and speed of the motor, combing with the calculation of the stator current under coordinate transformation.