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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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公开(公告)号：US20190199263A1
公开(公告)日：2019-06-27
申请号：US15854096
申请日：2017-12-26
Applicant: Eaton Corporation
Inventor： Huaqiang Li , Joshua B. Gross , Joseph Paul Uphaus , Thomas M. Ruchti , Kaijam M. Woodley
Abstract: A motor control system for selectively controlling power from a power source to a load is provided. The motor control system includes at least one PCB structure and a plurality of protection and control components mounted onto the at least one PCB structure so as to be electrically coupled therewith. The plurality of protection and control components includes a power converter operable to provide a controlled output power to the load, a plurality of switching devices operable to selectively control power flow from the power source into the power converter and to bypass the power converter, and one or more protection devices configured to selectively interrupt current flow from the power source to the power converter during a fault condition. The motor control system also includes a housing enclosing the at least one PCB structure and the plurality of protection and control components.
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13.发明申请公开(公告)号：US20190067932A1
公开(公告)日：2019-02-28
申请号：US15692451
申请日：2017-08-31
Applicant: Eaton Corporation
Inventor： Huaqiang Li , Seth O'Brien , Thomas M. Ruchti
Abstract: A power conversion circuit having a solid-state circuit breaker integrated therein is disclosed. With a disconnect switch between a utility source and the power conversion apparatus described for meeting UL489, the power conversion circuit includes an input connectable to an AC source, a rectifier circuit connected to the input to convert an AC power input to a DC power, and a DC link coupled to the rectifier circuit to receive the DC power therefrom. The rectifier circuit comprises a plurality of phase legs each including thereon an upper switching unit and a lower switching unit, wherein at least one of the upper and lower switching units on each phase leg comprises a bi-directional switching unit that selectively controls current and withstands voltage in both directions, so as to provide a circuit breaking capability that selectively interrupts current flow through the rectifier circuit, while maintaining original power conversion functionalities.
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公开(公告)号：US20170170753A1
公开(公告)日：2017-06-15
申请号：US14969872
申请日：2015-12-15
Applicant: Zhejiang University , Eaton Corporation
Inventor： Huaqiang Li , Wenxi Yao , Zhengyu Lu
Abstract: A power converter for operating a three-phase AC electrical machine from a single phase AC power source includes an ASD having a rectifier and inverter, and an add-on power conversion module external to the ASD that is electrically connected to each of the power source and the ASD. The power conversion module includes one or more input inductors configured to store and filter single-phase AC power received from the power source and a pair of switching devices connected to each of the input inductors at an output end thereof. A controller operably connected to the power conversion module selectively controls switching of the pair of switching devices associated with each of the one or more input inductors so as to cause a sinusoidal single phase AC power to be output from the add-on power conversion module for rectification by the rectifier.
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15.发明授权System and method for single-phase and three-phase current determination in power converters and inverters 有权电力变换器和逆变器中单相和三相电流确定的系统和方法公开(公告)号：US09595889B2
公开(公告)日：2017-03-14
申请号：US13768418
申请日：2013-02-15
Applicant: Eaton Corporation
Inventor： Huaqiang Li , Yakov Lvovich Familiant , Xiaoling Li
IPC: H02M7/5387 , H02M5/458 , H02M1/00
CPC classification number: H02M7/53873 , H02M5/458 , H02M2001/0009
Abstract: A system and method for capturing current information for a power converter is disclosed. The current monitoring system includes a control system operably connected to a circuit having a plurality of semiconductor switches that are controllable to convert an input power to an output power having a desired voltage and current. The control system includes a PWM signal generator to generate switching signals that control switching of the switches, gate drivers to facilitate switching of the switches, and desaturation circuits to provide overcurrent protection to the switches. The control system further includes a processor that receives voltage data from the desaturation circuits regarding a measured voltage across each of the switches, determines a current through each of the switches based on the voltage across each respective switch, and calculates an input current to the circuit or an output current of the circuit based on the determined currents through the switches.
Abstract translation: 公开了一种用于捕获功率转换器的当前信息的系统和方法。 电流监视系统包括可操作地连接到具有多个半导体开关的电路的控制系统，所述多个半导体开关可被控制以将输入功率转换为具有期望的电压和电流的输出功率。 该控制系统包括一个PWM信号发生器，用于产生开关信号，该开关信号控制开关的开关，栅极驱动器以便于开关的切换，以及去饱和电路，为开关提供过流保护。 控制系统还包括处理器，其从去饱和电路接收关于每个开关上的测量电压的电压数据，基于每个开关上的电压确定通过每个开关的电流，并且计算到电路的输入电流 或基于通过开关确定的电流的电路的输出电流。
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Patent Agency Ranking
公开(公告)号：US20160268797A1
公开(公告)日：2016-09-15
申请号：US14656049
申请日：2015-03-12
Applicant: Eaton Corporation
Inventor： Huaqiang Li , Youdong He , Xiaoling Li
CPC classification number: H02M1/44 , H02H7/1252 , H02M1/32 , H02M1/36 , H02M5/458 , H02M5/4585 , H02M7/06 , H02M7/062 , H02M7/125 , H02M7/162
Abstract: A variable frequency drive (VFD) circuit includes an input connectable to an AC source, a rectifier to convert an AC power input to a DC power, a DC link to receive DC power from the rectifier and having a DC link voltage thereon, a DC link capacitor bank with one or more capacitors connected to the DC link, and a pre-charge circuit coupled to the DC link capacitor. The pre-charge circuit further includes one or more resistors, one or more pre-charge relays each operable in on and off states to selectively control a current flow through the resistor(s) so as to control an initial pre-charge of the DC link capacitor, and an overvoltage relay operable in on and off states to selectively cut-off a current flow to the DC link capacitor bank, so as to prevent an overvoltage condition in the DC link capacitor bank.
Abstract translation: 变频驱动（VFD）电路包括可连接到AC电源的输入端，将AC电源输入转换为DC电力的整流器，DC链路以从整流器接收DC电力并且具有DC链路电压; DC 链路电容器组与连接到DC链路的一个或多个电容器以及耦合到DC链路电容器的预充电电路。 预充电电路还包括一个或多个电阻器，一个或多个预充电继电器，每个可工作在导通和截止状态，以选择性地控制通过电阻器的电流，以便控制DC的初始预充电 连接电容器和可操作于导通和截止状态的过电压继电器，以选择性地截断到DC链路电容器组的电流，以便防止DC链路电容器组中的过电压状态。
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17.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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18.发明申请公开(公告)号：US20140323030A1
公开(公告)日：2014-10-30
申请号：US13873716
申请日：2013-04-30
Applicant: EATON CORPORATION
Inventor： Ravishankar Shivsharan Rugge , Huaqiang Li , Robert Fenton
IPC: F24F11/04
CPC classification number: F24F11/04 , F24F11/0079 , F24F11/46 , F24F11/74 , F24F11/77 , F24F2011/0042 , F24F2011/0047 , F24F2011/0075 , F24F2110/40 , F24F2140/60 , Y02B30/746
Abstract: A ventilation system includes first and second blowers connected to a plenum in parallel, with a first motor drive to control a speed of an electric motor of the first blower and a second motor drive to control a speed of an electric motor of the second blower. A controller associated with the first blower is programmed to receive a set point for a controlled variable that is controllable by operation of the first and second blowers, estimate a total air flow required from the first and second blowers to reach the controlled variable set point, calculate a blower speed ratio between a first blower speed and a second blower speed that provides the required total air flow at a minimum power consumption level, and generate commands to cause the first blower and the second blower to operate at speeds resulting in the calculated blower speed ratio.
Abstract translation: 通风系统包括并联连接到集气室的第一和第二鼓风机，第一电动机驱动器用于控制第一鼓风机的电动机的速度和用于控制第二鼓风机的电动机的速度的第二电动机驱动器。 与第一鼓风机相关联的控制器被编程为接收由第一和第二鼓风机的操作控制的受控变量的设定点，估计从第一和第二鼓风机到达受控变量设定点所需的总气流量， 计算在最小功耗水平下提供所需总气流的第一鼓风机速度和第二鼓风机速度之间的鼓风机速比，并且产生使第一鼓风机和第二鼓风机以导致所计算的鼓风机 转速比。
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公开(公告)号：US10594246B2
公开(公告)日：2020-03-17
申请号：US15854096
申请日：2017-12-26
Applicant: Eaton Corporation
Inventor： Huaqiang Li , Joshua B. Gross , Joseph Paul Uphaus , Thomas M. Ruchti , Kaijam M. Woodley
Abstract: A motor control system for selectively controlling power from a power source to a load is provided. The motor control system includes at least one PCB structure and a plurality of protection and control components mounted onto the at least one PCB structure so as to be electrically coupled therewith. The plurality of protection and control components includes a power converter operable to provide a controlled output power to the load, a plurality of switching devices operable to selectively control power flow from the power source into the power converter and to bypass the power converter, and one or more protection devices configured to selectively interrupt current flow from the power source to the power converter during a fault condition. The motor control system also includes a housing enclosing the at least one PCB structure and the plurality of protection and control components.
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公开(公告)号：US10355585B2
公开(公告)日：2019-07-16
申请号：US14656049
申请日：2015-03-12
Applicant: Eaton Corporation
Inventor： Huaqiang Li , Youdong He , Xiaoling Li
Abstract: A variable frequency drive (VFD) circuit includes an input connectable to an AC source, a rectifier to convert an AC power input to a DC power, a DC link to receive DC power from the rectifier and having a DC link voltage thereon, a DC link capacitor bank with one or more capacitors connected to the DC link, and a pre-charge circuit coupled to the DC link capacitor. The pre-charge circuit further includes one or more resistors, one or more pre-charge relays each operable in on and off states to selectively control a current flow through the resistor(s) so as to control an initial pre-charge of the DC link capacitor, and an overvoltage relay operable in on and off states to selectively cut-off a current flow to the DC link capacitor bank, so as to prevent an overvoltage condition in the DC link capacitor bank.
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