公开(公告)号：US06559654B2

公开(公告)日：2003-05-06

申请号：US09681404

申请日：2001-03-29

申请人： Eddy Ying Yin Ho ,  Craig William Moyer ,  Luis Jose Garces Rivera

发明人： Eddy Ying Yin Ho ,  Craig William Moyer ,  Luis Jose Garces Rivera

IPC分类号： G01R2320

CPC分类号： G01R27/2611

摘要： A method and system for determining an inductance value of an inductive element are presented. The method includes energizing the inductive element using an N-pulse AC to DC converter in electrical communication with the inductive element and an AC source. The method further includes determining at each of a plurality of periodic time intervals an inductive element voltage value, an inductive element current value, and an equivalent source phase angle. An Nth harmonic impedance squared value is then determined for the inductive element using the inductive element voltage and current values and the equivalent source phase angles. The inductive element inductance value is then calculated using the Nth harmonic impedance squared value and an AC source frequency value.

公开(公告)号：US06339309B1

公开(公告)日：2002-01-15

申请号：US09453408

申请日：1999-12-03

申请人： Paul Scott Bixel ,  Craig William Moyer ,  David Gray Roberson, Jr. ,  Barry Earle Dick

发明人： Paul Scott Bixel ,  Craig William Moyer ,  David Gray Roberson, Jr. ,  Barry Earle Dick

IPC分类号： H02P124

CPC分类号： H02P1/24

摘要： A method and apparatus for switching an AC motor between two power supplies such as supply mains and a variable frequency AC motor drive. In a transfer procedure, the motor drive is coupled to the motor to power the motor. When the supply main is connected to the motor, a resulting current spike in the output of the motor drive is detected to disconnect the motor drive from the motor very quickly while limiting current. In a capture procedure, both power supplies are coupled to the motor with the motor drive in an idle mode. When the supply mains are disconnected from the motor, the voltage change in the output of the motor drive is detected to quickly activate the motor drive to power the motor.

摘要翻译： 一种用于在诸如电源和可变频率AC电动机驱动的两个电源之间切换AC电动机的方法和装置。 在传送过程中，马达驱动器耦合到马达以为马达供电。 当电源主机连接到电机时，检测到电机驱动器输出中产生的电流尖峰，以极大的电流非常快速地将电机驱动器与电机断开。 在捕获过程中，两个电源都耦合到马达，电机驱动器处于空闲模式。 当电源与电机断开连接时，检测到电机驱动器的输出电压变化，以快速启动电机驱动器为电机供电。

公开(公告)号：US07984118B2

公开(公告)日：2011-07-19

申请号：US11011935

申请日：2004-12-14

申请人： Fred Henry Boettner ,  Stephen J. Sullivan ,  Craig William Moyer ,  Gary Kraterfield ,  Robert Kirby ,  Mark E. Shepard

发明人： Fred Henry Boettner ,  Stephen J. Sullivan ,  Craig William Moyer ,  Gary Kraterfield ,  Robert Kirby ,  Mark E. Shepard

IPC分类号： G06F15/177

CPC分类号： G06F9/44505

摘要： A control system having a host computer and one or more control computers connected to an interface for control of a process or machinery. The control computers are capable of automatically initiated network address assignment and configuration when powered up after installation. The network address is based on a location identifier situated in the interface that corresponds to a specific connection thereof to the control computer. The control computer reads the location identifier from the interface and requests a network address. The host computer assigns the network address based on the location identifier. Configuration of the control computer then proceeds. The procedure applies to newly installed control computers, whether first time installment or a replacement for a failed control computer.

摘要翻译： 一种具有主计算机和连接到界面以控制过程或机器的一个或多个控制计算机的控制系统。 控制计算机能够在安装后上电时自动启动网络地址分配和配置。 网络地址基于位于接口中的对应于与控制计算机的特定连接的位置标识符。 控制计算机从接口读取位置标识符并请求网络地址。 主机根据位置标识符分配网络地址。 然后控制计算机的配置继续进行。 该过程适用于新安装的控制计算机，无论是首次安装还是更换失败的控制计算机。