公开(公告)号：US07015671B2

公开(公告)日：2006-03-21

申请号：US10451773

申请日：2002-10-14

申请人： Norbert Knab ,  Thomas Asal ,  Nikolas Haberl

发明人： Norbert Knab ,  Thomas Asal ,  Nikolas Haberl

IPC分类号： H02P1/46 ,  H02P3/18

CPC分类号： H02P1/18

摘要： A circuit configuration for operating an electric motor is described, the circuit configuration containing a timer. As a function of a first differential signal between a setpoint signal and an actual value signal, a regulator supplies a first switch signal for feeding current to the electric motor. Simultaneously, the timer is started which limits the current feed signal to a specified maximum time. A detection system detects a change in the setpoint signal and thereupon outputs a second switch signal that also starts the timer and is able to trigger the current feed to the electric motor. The circuit configuration both protects the electric motor from a thermal overload and also makes it possible to feed current to the electric motor if a setpoint changes. The circuit configuration is suitable to be used in a variable speed drive.

摘要翻译： 描述用于操作电动机的电路配置，该电路配置包含计时器。 作为设定点信号和实际值信号之间的第一差分信号的函数，调节器提供用于将电流馈送到电动机的第一开关信号。 同时启动定时器，将当前进给信号限制在规定的最大时间。 检测系统检测设定值信号的变化，并且随后输出也启动定时器的第二开关信号，并且能够触发电动机的当前馈送。 电路配置既保护电动机免受热过载，并且如果设定值变化，也可以将电流馈送到电动机。 电路配置适用于变速驱动器。