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公开(公告)号：US09515598B2
公开(公告)日：2016-12-06
申请号：US14672307
申请日：2015-03-30
Applicant: Eaton Corporation
Inventor： Yaojin Mo , Huaqiang Li , Anbo Yu , Dawei Li , Jingfeng Xie
CPC classification number: H02P27/06 , H02M2007/53876 , H02P3/18 , H02P21/0021 , H02P23/00 , H02P23/20 , H02P23/28 , H02P27/047 , H02P29/0241
Abstract: A system and method for controlling an adjustable speed drive (ASD) to decelerate an AC load during a generating mode of operation is disclosed. The ASD includes a capacitor and an inverter coupled to a DC link. A current sensor system is coupled to an output of the inverter. The ASD further includes a control system programmed to calculate an energy of the capacitor, generate a reference power using the calculated capacitor energy, and calculate a feedback power from realtime current signals received from the current sensor system. The control system compares the feedback power to the reference power, defines a frequency offset based on the comparison, generates a speed command using the frequency offset, and outputs the speed command to the inverter to maintain a smooth DC link voltage during deceleration.
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Patent Agency Ranking
2.发明申请V/F CONTROL METHOD FOR SUPPRESSING CURRENT OSCILLATION OF INDUCTION MOTOR 审中-公开用于抑制电动机电流振荡的V / F控制方法公开(公告)号：US20160226420A1
公开(公告)日：2016-08-04
申请号：US15021335
申请日：2014-05-30
Applicant: EATON CORPORATION
CPC classification number: H02P27/047 , H02P21/05 , H02P23/04
Abstract: The present invention provides a V/F control method for an induction motor comprising: extracting a reactive current and an active current and performing a differential calculation on them respectively to obtain a differential of the reactive current and a differential of the active current; multiplying the differential of the reactive current and the differential of the active current by a first coefficient and a second coefficient respectively; obtaining the sum of the result of multiplying the differential of the reactive current by the first coefficient and the result of multiplying the differential of the active current by the second coefficient; applying low-pass filtering on the sum to obtain a compensation; and superposing the compensation onto an original given angular frequency to perform V/F control.
Abstract translation: 本发明提供一种用于感应电动机的V / F控制方法，包括：分别提取无功电流和有功电流并对其进行微分计算，以获得无功电流的差分和有功电流的差值; 分别将无功电流的差分和有功电流的差分乘以第一系数和第二系数; 获得将无功电流的差值乘以第一系数的结果与将有效电流的差值乘以第二系数的结果之和; 对总和进行低通滤波以获得补偿; 并将补偿叠加到原始给定的角频率上以执行V / F控制。
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3.发明授权System and method for controlling regenerating energy in an adjustable speed drive 有权用于控制可调速驱动器中再生能量的系统和方法公开(公告)号：US08994320B2
公开(公告)日：2015-03-31
申请号：US13931121
申请日：2013-06-28
Applicant: Eaton Corporation
Inventor： Yaojin Mo , Huaqiang Li , Anbo Yu , Dawei Li , Jingfeng Xie
IPC: H02P23/00
CPC classification number: H02P27/06 , H02M2007/53876 , H02P3/18 , H02P21/0021 , H02P23/00 , H02P23/20 , H02P23/28 , H02P27/047 , H02P29/0241
Abstract: A system and method for controlling an adjustable speed drive (ASD) to decelerate an AC load during a generating mode of operation is disclosed. The ASD includes a capacitor and an inverter coupled to a DC link. A current sensor system is coupled to an output of the inverter. The ASD further includes a control system programmed to calculate an energy of the capacitor, generate a reference power using the calculated capacitor energy, and calculate a feedback power from realtime current signals received from the current sensor system. The control system compares the feedback power to the reference power, defines a frequency offset based on the comparison, generates a speed command using the frequency offset, and outputs the speed command to the inverter to maintain a smooth DC link voltage during deceleration.
Abstract translation: 公开了一种用于控制可调速驱动器（ASD）以在生成操作模式期间减速AC负载的系统和方法。 ASD包括耦合到DC链路的电容器和反相器。 电流传感器系统耦合到逆变器的输出端。 ASD还包括被编程为计算电容器的能量的控制系统，使用所计算的电容器能量产生参考功率，以及从当前传感器系统接收的实时电流信号计算反馈功率。 控制系统将反馈功率与参考功率进行比较，根据比较定义频率偏移，使用频率偏移生成速度指令，并将速度指令输出到变频器，以在减速期间保持平稳的直流母线电压。
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公开(公告)号：US10135378B2
公开(公告)日：2018-11-20
申请号：US15021335
申请日：2014-05-30
Applicant: Eaton Corporation
Abstract: The present invention provides a V/F control method for an induction motor comprising: extracting a reactive current and an active current and performing a differential calculation on them respectively to obtain a differential of the reactive current and a differential of the active current; multiplying the differential of the reactive current and the differential of the active current by a first coefficient and a second coefficient respectively; obtaining the sum of the result of multiplying the differential of the reactive current by the first coefficient and the result of multiplying the differential of the active current by the second coefficient; applying low-pass filtering on the sum to obtain a compensation; and superposing the compensation onto an original given angular frequency to perform V/F control.
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5.发明申请SYSTEM AND METHOD FOR CONTROLLING REGENERATING ENERGY IN AN ADJUSTABLE SPEED DRIVE 有权用于控制可调节速度驱动器中再生能量的系统和方法公开(公告)号：US20150263661A1
公开(公告)日：2015-09-17
申请号：US14672307
申请日：2015-03-30
Applicant: Eaton Corporation
Inventor： Yaojin Mo , Huaqiang Li , Anbo Yu , Dawei Li , Jingfeng Xie
CPC classification number: H02P27/06 , H02M2007/53876 , H02P3/18 , H02P21/0021 , H02P23/00 , H02P23/20 , H02P23/28 , H02P27/047 , H02P29/0241
Abstract: A system and method for controlling an adjustable speed drive (ASD) to decelerate an AC load during a generating mode of operation is disclosed. The ASD includes a capacitor and an inverter coupled to a DC link. A current sensor system is coupled to an output of the inverter. The ASD further includes a control system programmed to calculate an energy of the capacitor, generate a reference power using the calculated capacitor energy, and calculate a feedback power from realtime current signals received from the current sensor system. The control system compares the feedback power to the reference power, defines a frequency offset based on the comparison, generates a speed command using the frequency offset, and outputs the speed command to the inverter to maintain a smooth DC link voltage during deceleration.
Abstract translation: 公开了一种用于控制可调速驱动器（ASD）以在生成操作模式期间减速AC负载的系统和方法。 ASD包括耦合到DC链路的电容器和反相器。 电流传感器系统耦合到逆变器的输出端。 ASD还包括被编程为计算电容器的能量的控制系统，使用所计算的电容器能量产生参考功率，以及从当前传感器系统接收的实时电流信号计算反馈功率。 控制系统将反馈功率与参考功率进行比较，根据比较定义频率偏移，使用频率偏移生成速度指令，并将速度指令输出到变频器，以在减速期间保持平稳的直流母线电压。
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公开(公告)号：US20150002072A1
公开(公告)日：2015-01-01
申请号：US13931121
申请日：2013-06-28
Applicant: Eaton Corporation
Inventor： Yaojin Mo , Huaqiang Li , Anbo Yu , Dawei Li , Jingfeng Xie
IPC: H02P23/00
CPC classification number: H02P27/06 , H02M2007/53876 , H02P3/18 , H02P21/0021 , H02P23/00 , H02P23/20 , H02P23/28 , H02P27/047 , H02P29/0241
Abstract: A system and method for controlling an adjustable speed drive (ASD) to decelerate an AC load during a generating mode of operation is disclosed. The ASD includes a capacitor and an inverter coupled to a DC link. A current sensor system is coupled to an output of the inverter. The ASD further includes a control system programmed to calculate an energy of the capacitor, generate a reference power using the calculated capacitor energy, and calculate a feedback power from realtime current signals received from the current sensor system. The control system compares the feedback power to the reference power, defines a frequency offset based on the comparison, generates a speed command using the frequency offset, and outputs the speed command to the inverter to maintain a smooth DC link voltage during deceleration.
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