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1. 发明公开

EP2733841A2 Systems, methods, and assemblies for detecting stoppage of electric motors 审中-公开
标题翻译： Systeme，Verfahren und Anordnungen zur Detektion des Stillstands von Elektromotoren
公开(公告)号：EP2733841A2
公开(公告)日：2014-05-21
申请号：EP13189253.1
申请日：2013-10-18
申请人： Nidec Motor Corporation
发明人： Sheahan, Thomas
IPC分类号： H02P6/24
CPC分类号： H02P3/06 , H02P3/02 , H02P6/24
摘要： A motor controller for an electric motor having a stator and a rotor. The motor controller includes a power input for receiving AC power from a power source; a control input for receiving a control signal from a control; and circuitry for switching power from the power source to the electric motor in response to the control signal. The circuitry is operable to: apply a driving waveform to the stator to cause rotation of the rotor; remove the driving waveform from the stator to cause the rotor to coast and eventually stop; apply a stop detection waveform to the stator while the rotor is coasting, wherein the stop detection waveform induces a waveform on the rotor which in turn induces a waveform back to the stator while the rotor is rotating; and monitor the stator to detect a characteristic of the waveform induced back to the stator to detect when the rotor has substantially stopped rotating.
摘要翻译：一种具有定子和转子的电动机的电动机控制器。马达控制器包括用于从电源接收AC电力的电源输入; 用于从控制器接收控制信号的控制输入; 以及用于响应于控制信号从电源向电动机切换电力的电路。电路可操作为：将驱动波形施加到定子以引起转子的旋转; 从定子上取下驱动波形，使转子滑行并最终停止; 在转子滑行时向定子施加停止检测波形，其中停止检测波形引起转子上的波形，转子又在转子旋转时引起回波到定子的波形; 并监测定子以检测引到定子的波形的特性，以检测转子何时基本上停止旋转。

2. 发明公开

EP2733841A3 Systems, methods, and assemblies for detecting stoppage of electric motors 审中-公开
标题翻译：用于检测电动机停止的系统，方法和组件
公开(公告)号：EP2733841A3
公开(公告)日：2017-12-13
申请号：EP13189253.1
申请日：2013-10-18
申请人： Nidec Motor Corporation
发明人： Sheahan, Thomas
IPC分类号： H02P6/24 , H02P3/02 , H02P3/06
CPC分类号： H02P3/06 , H02P3/02 , H02P6/24
摘要： A motor controller for an electric motor having a stator and a rotor. The motor controller includes a power input for receiving AC power from a power source; a control input for receiving a control signal from a control; and circuitry for switching power from the power source to the electric motor in response to the control signal. The circuitry is operable to: apply a driving waveform to the stator to cause rotation of the rotor; remove the driving waveform from the stator to cause the rotor to coast and eventually stop; apply a stop detection waveform to the stator while the rotor is coasting, wherein the stop detection waveform induces a waveform on the rotor which in turn induces a waveform back to the stator while the rotor is rotating; and monitor the stator to detect a characteristic of the waveform induced back to the stator to detect when the rotor has substantially stopped rotating.
摘要翻译：一种用于具有定子和转子的电动机的电动机控制器。电机控制器包括用于从电源接收AC电力的电力输入端; 控制输入端，用于从控制器接收控制信号; 以及用于响应于控制信号而将电力从电源切换到电动机的电路。该电路可操作以：将驱动波形施加到定子以引起转子的旋转; 从定子上去除驱动波形，使转子惯性运行并最终停止; 在转子惯性运转时向定子施加停止检测波形，其中停止检测波形在转子上感应出波形，该波形又在转子旋转时将波形感应回定子; 并监测定子以检测回到定子的波形的特性以检测转子何时基本停止旋转。

3. 发明公开

EP2722980A2 Systems and methods for braking an electric motor 审中-公开
标题翻译： Systeme und Verfahren zum Bremsen eines Elektromotors
公开(公告)号：EP2722980A2
公开(公告)日：2014-04-23
申请号：EP13189435.4
申请日：2013-10-18
申请人： Nidec Motor Corporation
发明人： Marcetic, Darko , Sheahan, Thomas
IPC分类号： H02P3/00
CPC分类号： H02P3/22 , H02P3/00 , H02P3/18
摘要： A motor controller for an electric motor having a stator and a rotor. The motor controller includes a power input for receiving AC power from a power source; a control input for receiving a control signal from a control; and circuitry for switching power from the power source to the electric motor in response to the control signal. The circuitry is operable to: apply a braking waveform to the stator while the rotor is rotating; monitor a reactive power of the stator; detect an increase in the reactive power of the stator to determine the rotor has substantially stopped rotating; and remove the braking waveform from the stator in response to detecting the increase in the reactive power.
摘要翻译：一种具有定子和转子的电动机的电动机控制器。马达控制器包括用于从电源接收AC电力的电源输入; 用于从控制器接收控制信号的控制输入; 以及用于响应于控制信号从电源向电动机切换电力的电路。电路可操作以：在转子旋转时将制动波形施加到定子; 监测定子的无功功率; 检测定子的无功功率的增加，以确定转子已基本停止转动; 并且响应于检测到无功功率的增加而从定子中去除制动波形。

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