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公开(公告)号：US10523128B1
公开(公告)日：2019-12-31
申请号：US16370774
申请日：2019-03-29
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Ahmed S. Mohamed Sayed Ahmed , Ehsan Al-Nabi , Zhendong Zhang , Sang Woo Nam
Abstract: An active rectifier with a controller including a feedforward component, a modulator and a modulation index controller. The modulator generates switching control signals according to a reference to convert AC input power from the AC input to control the DC bus voltage at the DC output. The feedforward component computes the reference according to an estimated total inductance of the AC input, a grid voltage of the AC input, a modulation index reference, and a reactive power offset signal, and the modulation index controller computes the reactive power offset signal according to an error between the modulation index reference and a feedback modulation index.
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2.发明授权公开(公告)号：US10811990B1
公开(公告)日：2020-10-20
申请号：US16370503
申请日：2019-03-29
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Ahmed S. Mohamed Sayed Ahmed , Lixiang Wei , Ehsan Al-Nabi , Nirav Patel , Sang Woo Nam
Abstract: An active rectifier includes first and second DC nodes, a switching circuit, and a controller configured to compute a voltage reference according to a load signal of the DC output, and a non-linear relationship between a load condition of the DC output and a DC bus voltage at the DC output, and to generate rectifier switching control signals according to the voltage reference to cause the switching circuit to convert AC input power from the AC input to control the DC bus voltage at the DC output.
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3.发明授权公开(公告)号：US09374028B2
公开(公告)日：2016-06-21
申请号：US14565781
申请日：2014-12-10
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Thomas Nondahl , Jingbo Liu , Peter Schmidt , Semyon Royak , Jingya Dai , Ehsan Al-Nabi
Abstract: Motor drive control apparatus and methods are presented for sensorless control of a driven motor using open loop current regulated control during low-speed operation and an EMF-based position observer for position estimation during higher speed operation, with zero feedback speed during low-speed open-loop operation and feedback speed estimated by the EMF-based observer during high-speed operation and with velocity mode control over the full speed range and mode control hysteresis for smooth transitions between open loop and EMF-based observer control.
Abstract translation: 电动机驱动控制装置和方法用于在低速运行期间使用开环电流调节控制的驱动电机进行无传感器控制，以及用于在高速运行期间用于位置估计的基于EMF的位置观察器，在低速打开期间具有零反馈速度 在高速运行期间由基于EMF的观测器估计的循环运行和反馈速度以及在全速范围和速度范围内的速度模式控制以及开环和基于EMF的观测器控制之间的平滑过渡的模式控制滞后。
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4.发明申请SENSORLESS MOTOR DRIVE VECTOR CONTROL WITH FEEDBACK COMPENSATION FOR FILTER CAPACITOR CURRENT 审中-公开无刷电机驱动矢量控制与反馈补偿滤波电容电流公开(公告)号：US20160173012A1
公开(公告)日：2016-06-16
申请号：US15053135
申请日：2016-02-25
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Thomas A. Nondahl , Semyon Royak , Jingbo Liu , Jingya Dai , Ehsan Al-Nabi , Peter B. Schmidt
CPC classification number: H02P27/06 , H02M1/126 , H02M7/53873 , H02M2001/0009 , H02M2007/53876 , H02P6/08
Abstract: Disclosed examples include methods, computer readable mediums and motor drives power conversion systems for sensorless speed control of a motor driven by an inverter through an intervening filter, in which a controller computes motor current feedback values for a current control cycle according to inverter output current values, capacitance values representing capacitances of filter capacitors of the filter, filter output voltage values representing output voltages of the filter, and a speed feedback or reference value of a previous control cycle. The controller computes a speed feedback value for the current control cycle according to the motor current feedback values and the filter output voltage values, and controls the inverter to regulate the rotational speed of the motor at least partially according to the speed feedback or reference value using vector control.
Abstract translation: 公开的示例包括用于通过中间滤波器由逆变器驱动的电动机的无速度传感器速度控制的方法，计算机可读介质和电动机驱动功率转换系统，其中控制器根据逆变器输出电流值计算当前控制周期的电动机电流反馈值 表示滤波器的滤波电容器的电容的电容值，表示滤波器的输出电压的滤波器输出电压值，以及先前控制周期的速度反馈或参考值。 控制器根据电机电流反馈值和滤波器输出电压值计算当前控制周期的速度反馈值，并控制变频器至少部分根据速度反馈或参考值来调节电机的转速，使用 矢量控制。
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公开(公告)号：US20200313566A1
公开(公告)日：2020-10-01
申请号：US16706694
申请日：2019-12-07
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Ahmed S. Mohamed Sayed Ahmed , Ehsan Al-Nabi , Zhendong Zhang , Sang Woo Nam
Abstract: An active rectifier with a controller including a feedforward component, a modulator and a modulation index controller. The modulator generates switching control signals according to a reference to convert AC input power from the AC input to control the DC bus voltage at the DC output. The feedforward component computes the reference according to an estimated total inductance of the AC input, a grid voltage of the AC input, a modulation index reference, and a reactive power offset signal, and the modulation index controller computes the reactive power offset signal according to an error between the modulation index reference and a feedback modulation index.
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Patent Agency Ranking
公开(公告)号：US20160173018A1
公开(公告)日：2016-06-16
申请号：US15053273
申请日：2016-02-25
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Thomas A. Nondahl , Jingbo Liu , Semyon Royak , Peter B. Schmidt , Ehsan Al-Nabi , Jingya Dai
CPC classification number: H02P21/24 , H02M1/126 , H02M7/53873 , H02M2001/0009 , H02M2007/53876 , H02P6/08 , H02P6/28 , H02P21/13 , H02P21/18 , H02P21/26 , H02P27/06 , H02P27/08
Abstract: Disclosed examples include methods, computer readable mediums and motor drive power conversion systems for sensorless speed control of a motor driven by an inverter through an intervening filter, a transformer and a motor cable, in which sensorless vector control is used to regulate the motor speed based on a speed feedback value computed according to voltage or current values associated with the motor drive using an observer having formulas and impedance parameters of the filter, the transformer, the motor cable and the motor.
Abstract translation: 公开的实例包括用于通过中间滤波器，变压器和电动机电缆由逆变器驱动的电动机的无传感器速度控制的方法，计算机可读介质和电动机驱动功率转换系统，其中无传感器矢量控制用于调节基于电动机速度的 根据使用具有滤波器，变压器，电动机电缆和电动机的公式和阻抗参数的观测器的与电动机驱动相关联的电压或电流值计算的速度反馈值。
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公开(公告)号：US20160056740A1
公开(公告)日：2016-02-25
申请号：US14565781
申请日：2014-12-10
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Thomas Nondahl , Jingbo Liu , Peter Schmidt , Semyon Royak , Jingya Dai , Ehsan Al-Nabi
Abstract: Motor drive control apparatus and methods are presented for sensorless control of a driven motor using open loop current regulated control during low-speed operation and an EMF-based position observer for position estimation during higher speed operation, with zero feedback speed during low-speed open-loop operation and feedback speed estimated by the EMF-based observer during high-speed operation and with velocity mode control over the full speed range and mode control hysteresis for smooth transitions between open loop and EMF-based observer control.
Abstract translation: 电动机驱动控制装置和方法用于在低速运行期间使用开环电流调节控制的驱动电机进行无传感器控制，以及用于在高速运行期间用于位置估计的基于EMF的位置观察器，在低速打开期间具有零反馈速度 在高速运行期间由基于EMF的观测器估计的循环运行和反馈速度以及在全速范围和速度范围内的速度模式控制以及开环和基于EMF的观测器控制之间的平滑过渡的模式控制滞后。
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8.发明申请公开(公告)号：US20200313565A1
公开(公告)日：2020-10-01
申请号：US16370503
申请日：2019-03-29
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Ahmed S. Mohamed Sayed Ahmed , Lixiang Wei , Ehsan Al-Nabi , Nirav Patel , Sang Woo Nam
IPC: H02M7/06
Abstract: An active rectifier includes first and second DC nodes, a switching circuit, and a controller configured to compute a voltage reference according to a load signal of the DC output, and a non-linear relationship between a load condition of the DC output and a DC bus voltage at the DC output, and to generate rectifier switching control signals according to the voltage reference to cause the switching circuit to convert AC input power from the AC input to control the DC bus voltage at the DC output.
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公开(公告)号：US10680547B2
公开(公告)日：2020-06-09
申请号：US16033321
申请日：2018-07-12
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Yuan Xiao , Ye Zhang , Ehsan Al-Nabi , Richard L. Piekarz
Abstract: The disclosed examples provide an easy and low-loss solution to reduce voltage stress on motor and cable in inverter-fed motor systems by suppressing resonances on the motor cable with apparatus coupled between the inverter output and the motor cable. Disclosed examples include various methods to mitigate voltage stress on both motor and cable, including an output filter circuit with a cable side parallel RL circuit between an inverter output and a motor cable, and an inverter to provide an inverter output signal to the output filter circuit to drive a load through the motor cable, where the cable side parallel RL circuit includes a resistor coupled in series between the inverter output and the motor cable, and an inductor connected in parallel with the resistor.
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公开(公告)号：US20200021234A1
公开(公告)日：2020-01-16
申请号：US16033321
申请日：2018-07-12
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Yuan Xiao , Ye Zhang , Ehsan Al-Nabi , Richard L. Piekarz
Abstract: The disclosed examples provide an easy and low-loss solution to reduce voltage stress on motor and cable in inverter-fed motor systems by suppressing resonances on the motor cable with apparatus coupled between the inverter output and the motor cable. Disclosed examples include various methods to mitigate voltage stress on both motor and cable, including an output filter circuit with a cable side parallel RL circuit between an inverter output and a motor cable, and an inverter to provide an inverter output signal to the output filter circuit to drive a load through the motor cable, where the cable side parallel RL circuit includes a resistor coupled in series between the inverter output and the motor cable, and an inductor connected in parallel with the resistor.
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