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1. 发明授权

US09787236B2 System and method for optimizing flux regulation in electric motors 有权
公开(公告)号：US09787236B2
公开(公告)日：2017-10-10
申请号：US15337672
申请日：2016-10-28
申请人： Nidec Motor Corporation
发明人： Thomas J. Sheahan
IPC分类号： H02K7/14 , H02P23/14 , H02P21/20
CPC分类号： H02P23/14 , H02P21/20 , H02P2207/01
摘要： A system and method for dynamically optimizing flux levels in electric motors based on estimated torque. Motor parameters and motor equations are used to estimate operating characteristics and to set current and voltage limits which define an optimal flux operating range for a given speed and torque of the motor. A slope of a linear flux gain is determined within the defined operating range at different speeds of the motor. The determined slopes for the different speeds are saved in a memory element. A control element determines and achieves an optimal flux level for the motor by accessing the table to identify a specific slope which corresponds to an actual speed of the motor, multiplying the slope by the estimated torque and adding an offset value to determine a phase current component value associated with the optimal flux level, and applying the determined phase current component value to the motor.

2. 发明申请

US20150108928A1 SYSTEMS AND METHODS FOR BRAKING AN ELECTRIC MOTOR 有权
标题翻译：制动电动机的系统和方法
公开(公告)号：US20150108928A1
公开(公告)日：2015-04-23
申请号：US14584308
申请日：2014-12-29
申请人： Nidec Motor Corporation
发明人： Darko Marcetic , Thomas J. Sheahan
IPC分类号： H02P3/22 , H02P3/18
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：一种用于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将电力从电源切换到电动机的电路。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; 并响应于检测到无功功率的增加，从定子中去除制动波形。

3. 发明申请

US20170054396A1 SYSTEM AND METHOD FOR OPTIMIZING FLUX REGULATION IN ELECTRIC MOTORS 有权
标题翻译：用于优化电动机中的磁通调节的系统和方法
公开(公告)号：US20170054396A1
公开(公告)日：2017-02-23
申请号：US15337672
申请日：2016-10-28
申请人： Nidec Motor Corporation
发明人： Thomas J. Sheahan
IPC分类号： H02P23/14
CPC分类号： H02P23/14 , H02P21/20 , H02P2207/01
摘要： A system and method for dynamically optimizing flux levels in electric motors based on estimated torque. Motor parameters and motor equations are used to estimate operating characteristics and to set current and voltage limits which define an optimal flux operating range for a given speed and torque of the motor. A slope of a linear flux gain is determined within the defined operating range at different speeds of the motor. The determined slopes for the different speeds are saved in a memory element. A control element determines and achieves an optimal flux level for the motor by accessing the table to identify a specific slope which corresponds to an actual speed of the motor, multiplying the slope by the estimated torque and adding an offset value to determine a phase current component value associated with the optimal flux level, and applying the determined phase current component value to the motor.
摘要翻译：一种基于估计扭矩动态优化电动机中磁通水平的系统和方法。电动机参数和电动机方程用于估计运行特性，并设定电流和电压限制，其限定电机给定速度和转矩的最佳磁通工作范围。在电机的不同速度下，在规定的工作范围内确定线性通量增益的斜率。用于不同速度的确定的斜率被保存在存储元件中。控制元件通过访问表来确定和实现电动机的最佳通量水平，以识别与电动机的实际速度相对应的特定斜率，将斜率乘以估计转矩，并且相加偏移值以确定相电流分量值，并将确定的相电流分量值应用于电动机。

4. 发明申请

US20140139151A1 SYSTEMS, METHODS, AND ASSEMBLIES FOR DETECTING STOPPAGE OF ELECTRIC MOTORS 有权
标题翻译：用于检测电动机停机的系统，方法和组件
公开(公告)号：US20140139151A1
公开(公告)日：2014-05-22
申请号：US13681100
申请日：2012-11-19
申请人： NIDEC MOTOR CORPORATION
发明人： Thomas J. Sheahan
IPC分类号： 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。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将电力从电源切换到电动机的电路。电路可操作地：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; 当转子滑行时，在定子上施加停止检测波形，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。

5. 发明授权

US09520821B1 System and method for optimizing flux regulation in electric motors 有权
标题翻译：优化电动机通量调节的系统和方法
公开(公告)号：US09520821B1
公开(公告)日：2016-12-13
申请号：US14830583
申请日：2015-08-19
申请人： Nidec Motor Corporation
发明人： Thomas J. Sheahan
IPC分类号： H02K7/14 , H02P23/14
CPC分类号： H02P23/14 , H02P21/20 , H02P2207/01
摘要： A system and method for dynamically optimizing flux levels in electric motors based on estimated torque. Motor parameters and motor equations are used to estimate operating characteristics and to set current and voltage limits which define an optimal flux operating range for a given speed and torque of the motor. A slope of a linear flux gain is determined within the defined operating range at different speeds of the motor. The determined slopes for the different speeds are saved in a memory element. A control element determines and achieves an optimal flux level for the motor by accessing the table to identify a specific slope which corresponds to an actual speed of the motor, multiplying the slope by the estimated torque and adding an offset value to determine a phase current component value associated with the optimal flux level, and applying the determined phase current component value to the motor.
摘要翻译：一种基于估计扭矩动态优化电动机中磁通水平的系统和方法。电动机参数和电动机方程用于估计运行特性，并设定电流和电压限制，其限定电机给定速度和转矩的最佳磁通工作范围。在电机的不同速度下，在规定的工作范围内确定线性通量增益的斜率。用于不同速度的确定的斜率被保存在存储元件中。控制元件通过访问表来确定和实现电动机的最佳通量水平，以识别与电动机的实际速度相对应的特定斜率，将斜率乘以估计转矩，并且相加偏移值以确定相电流分量值，并将确定的相电流分量值应用于电动机。

6. 发明授权

US08907600B2 Systems, methods, and assemblies for detecting stoppage of electric motors 有权
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：US08907600B2
公开(公告)日：2014-12-09
申请号：US13681100
申请日：2012-11-19
申请人： Nidec Motor Corporation
发明人： Thomas J. Sheahan
IPC分类号： H02P3/06 , H02P6/24 , H02P3/02
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。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将电力从电源切换到电动机的电路。电路可操作地：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; 当转子滑行时，在定子上施加停止检测波形，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。

7. 发明申请

US20140111124A1 SYSTEMS AND METHODS FOR BRAKING AN ELECTRIC MOTOR 有权
标题翻译：制动电动机的系统和方法
公开(公告)号：US20140111124A1
公开(公告)日：2014-04-24
申请号：US13657335
申请日：2012-10-22
申请人： NIDEC MOTOR CORPORATION
发明人： Darko Marcetic , Thomas J. Sheahan
IPC分类号： H02P3/22 , H02P3/18
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：一种用于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将电力从电源切换到电动机的电路。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。

8. 发明授权

US10003292B2 System and method for optimizing flux regulation in electric motors 有权
公开(公告)号：US10003292B2
公开(公告)日：2018-06-19
申请号：US15702488
申请日：2017-09-12
申请人： Nidec Motor Corporation
发明人： Thomas J. Sheahan
IPC分类号： H02K7/14 , H02P23/14 , H02P21/20
CPC分类号： H02P23/14 , H02P21/20 , H02P2207/01
摘要： A system and method for dynamically optimizing flux levels in electric motors based on estimated torque. Motor parameters and motor equations are used to estimate operating characteristics and to set current and voltage limits which define an optimal flux operating range for a given speed and torque of the motor. A slope of a linear flux gain is determined within the defined operating range at different speeds of the motor. The determined slopes for the different speeds are saved in a memory element. A control element determines and achieves an optimal flux level for the motor by accessing the table to identify a specific slope which corresponds to an actual speed of the motor, multiplying the slope by the estimated torque and adding an offset value to determine a phase current component value associated with the optimal flux level, and applying the determined phase current component value to the motor.

9. 发明授权

US09602027B2 Systems, methods, and assemblies for detecting stoppage of electric motors 有权
公开(公告)号：US09602027B2
公开(公告)日：2017-03-21
申请号：US14559448
申请日：2014-12-03
申请人： Nidec Motor Corporation
发明人： Thomas J. Sheahan
IPC分类号： H02P3/06 , H02P3/24 , H02P6/24 , H02P3/02
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.

10. 发明授权

US09577552B2 Systems and methods for braking an electric motor 有权
标题翻译：制动电动机的系统和方法
公开(公告)号：US09577552B2
公开(公告)日：2017-02-21
申请号：US14584308
申请日：2014-12-29
申请人： Nidec Motor Corporation
发明人： Darko Marcetic , Thomas J. Sheahan
IPC分类号： H02P3/22 , H02P3/00 , H02P3/18
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：一种用于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将电力从电源切换到电动机的电路。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，从定子中去除制动波形。

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