用 PWM 供电的直流电动机暂态过程  

Transient Process of DC Motor Using PWM Supply

作　　者：吴晓梅[1,2,3] 黎家玲[1,2,3] 杨军[1,2,3] 

机构地区：[1]东南大学自动控制系 [2]天津大学自动化系 [3]南京电子技术研究所

出　　处：《东南大学学报（自然科学版）》1998年第5期72-78,共7页Journal of Southeast University：Natural Science Edition

摘　　要：论述了用ＰＷＭ供电时的直流电动机暂态过程的特性，用计算机数值计算和实验证明：ＰＷＭ供电的电机暂态过程的特性依然由电路时间常数和机电时间常数决定．若保持电枢电路电压平均值不变，改变ＰＷＭ的频率和占空比，只影响电枢电流和转矩等的脉动．使电机产生振动、噪音和附加损耗，不影响电机的基本性能．The characteristic of Transition of DC motor using PWM supply is described. The computer simulation process is mainly determined by electrical time constant and electromechanical time constant. If frequency and pule width ratio of PWM are changed, the ripple of current, torque and so on are only influenced, when average value of armature circuit voltage is constant. This will causes vibration, noise and additional loss, but will not influence the basic characteristic of motor.

关 键 词：PWM 直流电动机 暂态 电压平均值 

分 类 号：TM33[电气工程—电机]