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1. 发明授权

US06291878B1 Package for multiple high power electrical components 失效
标题翻译：多功能电气元件封装
公开(公告)号：US06291878B1
公开(公告)日：2001-09-18
申请号：US08052015
申请日：1993-04-22
申请人： W. Kyle Anderson , Arthur A. Pershall , Stephen E. Jackson
发明人： W. Kyle Anderson , Arthur A. Pershall , Stephen E. Jackson
IPC分类号： H01L2348
CPC分类号： H01L23/055 , H01L23/051 , H01L2924/0002 , H01L2924/13055 , H01L2924/00
摘要： A semiconductor package includes a plurality of semiconductor devices disposed in an array surrounding a central electrode structure carried by a package support member. The package is capable of withstanding high voltages and currents and includes a heat exchanger integral therewith.
摘要翻译：半导体封装包括围绕由封装支撑构件承载的中心电极结构的阵列设置的多个半导体器件。该封装能够耐受高电压和电流，并且包括与其成一体的热交换器。

2. 发明授权

US07501799B2 Engine start system with a regulated permanent magnet machine 有权
标题翻译：发动机启动系统配有稳压永磁机
公开(公告)号：US07501799B2
公开(公告)日：2009-03-10
申请号：US11820639
申请日：2007-06-20
申请人： Gregory I. Rozman , Matthew L. Wilhide , Arthur A. Pershall
发明人： Gregory I. Rozman , Matthew L. Wilhide , Arthur A. Pershall
IPC分类号： H02P9/14 , H02P3/00 , H02P9/06 , H02P15/00 , H02P9/00 , H02P9/10
CPC分类号： H02P9/305 , H02P1/46 , H02P9/48 , H02P27/05 , H02P2207/076
摘要： An electromechanical power transfer system that transfers power between a direct current (DC) electrical power system and a prime mover, comprises: a permanent magnet machine (PMM) comprising a permanent magnet (PM) rotor that rotates a drive shaft of the prime mover, a stator and a control coil; that an inverter/rectifier system for converting DC power from the DC power system to multiphase alternating current (AC) power on an AC bus; a control coil current regulator system for regulating current through the control coil; wherein the inverter/rectifier system responds to a position reference signal, a current load feedback signal and a current load reference signal to regulate acceleration of the PMM; wherein the control coil current regulator system responds to a control coil current reference signal and a control coil current feedback signal to regulate current in the PMM; and wherein the power transfer system starts in an open loop mode, and the first and second speed switches respond to a closed loop enable mode to switch from their open loop mode to their closed loop mode.
摘要翻译：一种在直流（DC）电力系统和原动机之间传递动力的机电式动力传递系统，包括：永久磁铁机（PMM），其包括旋转原动机的驱动轴的永久磁铁（PM）转子，定子和控制线圈; 用于将直流电力从直流电力系统转换为交流总线上的多相交流电源的逆变器/整流器系统; 用于调节通过控制线圈的电流的控制线圈电流调节器系统; 其中逆变器/整流器系统响应位置参考信号，电流负载反馈信号和电流负载参考信号来调节PMM的加速度; 其中所述控制线圈电流调节器系统响应于控制线圈电流参考信号和控制线圈电流反馈信号以调节PMM中的电流; 并且其中所述功率传输系统以开环模式启动，并且所述第一速度开关和所述第二速度开关响应闭环启用模式以从其开环模式切换到其闭环模式。

3. 发明授权

US5917401A Conductive bus member and method of fabricating same 失效
标题翻译：导电母线及其制造方法
公开(公告)号：US5917401A
公开(公告)日：1999-06-29
申请号：US806962
申请日：1997-02-26
申请人： Edward W. Smith , Arthur A. Pershall , Mark W. Metzler
发明人： Edward W. Smith , Arthur A. Pershall , Mark W. Metzler
IPC分类号： G01R1/20 , H01C7/00
CPC分类号： G01R1/203 , Y10T29/49082
摘要： A conductive bus member operable over a selected operating frequency range includes a cylindrical main body and first and second legs secured to the main body at first and second points whereby first and second current paths having first and second impedances are defined between the first and second points. A predetermined relationship between the first and second impedances is maintained over the selected operating frequency range.
摘要翻译：在所选择的工作频率范围上可操作的导电总线构件包括圆柱形主体和在第一和第二点处固定到主体的第一和第二支脚，其中具有第一和第二阻抗的第一和第二电流路径被限定在第一和第二点之间。第一和第二阻抗之间的预定关系在选定的工作频率范围内保持。

4. 发明授权

US5841272A Frequency-insensitive current sensor 失效
标题翻译：频率敏感电流传感器
公开(公告)号：US5841272A
公开(公告)日：1998-11-24
申请号：US575300
申请日：1995-12-20
申请人： Edward W. Smith , Arthur A. Pershall , William G. Durtschi
发明人： Edward W. Smith , Arthur A. Pershall , William G. Durtschi
IPC分类号： G01R15/20 , G01R1/20 , G01R15/14 , G01R33/00
CPC分类号： G01R1/203 , G01R15/146
摘要： An electrical device is capable of sensing both AC and DC current which is flowing through an electrical circuit. The electrical device bifurcates the current into separate paths, wherein impedance of each path has a constant relationship to each other. In a further embodiment, the electrical device includes a current sensor for measuring current flowing through the circuit. The sensor is of a type which does not introduce insertion loss.
摘要翻译：电气设备能够感测流经电路的交流和直流电流。电气设备将电流分叉成单独的路径，其中每个路径的阻抗彼此具有恒定的关系。在另一个实施例中，电气设备包括用于测量流过电路的电流的电流传感器。传感器是不引入插入损耗的类型。

5. 发明授权

US5839185A Method of fabricating a magnetic flux concentrating core 失效
标题翻译：制造磁通集中芯的方法
公开(公告)号：US5839185A
公开(公告)日：1998-11-24
申请号：US806963
申请日：1997-02-26
申请人： Edward W. Smith , Arthur A. Pershall
发明人： Edward W. Smith , Arthur A. Pershall
IPC分类号： H01F3/04 , H01F41/02
CPC分类号： H01F41/0213 , H01F3/04 , Y10T29/4902 , Y10T29/49071 , Y10T29/49075 , Y10T29/49078
摘要： A current sensor operable over a selected operating frequency range includes a flux concentrating core. The core is fabricated by forming a series of tape-wound laminations into a desired closed shape, securing the laminations together at a point and removing material at the point to create a gap.
摘要翻译：可在选定的工作频率范围内操作的电流传感器包括集流芯。芯通过将一系列带缠绕的叠片形成为期望的封闭形状，将叠片固定在一起并在该点移除材料以产生间隙来制造芯。

6. 发明申请

US20080315584A1 Engine start system with a regulated permanent magnet machine 有权
公开(公告)号：US20080315584A1
公开(公告)日：2008-12-25
申请号：US11820639
申请日：2007-06-20
申请人： Gregory I. Rozman , Matthew L. Wilhide , Arthur A. Pershall
发明人： Gregory I. Rozman , Matthew L. Wilhide , Arthur A. Pershall
IPC分类号： H02P9/04 , F02N11/04
CPC分类号： H02P9/305 , H02P1/46 , H02P9/48 , H02P27/05 , H02P2207/076
摘要： An electromechanical power transfer system that transfers power between a direct current (DC) electrical power system and a prime mover, comprises: a permanent magnet machine (PMM) comprising a permanent magnet (PM) rotor that rotates a drive shaft of the prime mover, a stator with a multiphase alternating current (AC) winding coupled to the AC bus for developing a rotating magnetic field with a magnetic flux path that causes rotation of the PM rotor and a control coil with a winding that has a configuration to generate a magnetic field with flux that varies the reactance of the stator winding upon the application of current through the control coil; a plurality of AC current sensors for sensing the current in each phase of the multi-phase AC bus and generating respective AC bus current signals that represent the current level of each phase; an average current detector that receives the AC bus current signals and generates a respective current load feedback signal; a back electromotive force (emf) detector coupled to the AC bus that detects back emf generated by the stator in response to the application of AC power to the stator and generates a back emf signal representative of the detected level of back emf; a rotor position/speed estimator that receives the back emf signal and generates an estimated rotor position signal that is representative of the position of the rotor, an estimated rotor speed signal that is representative of the speed of the rotor and a closed loop enable signal that indicates a speed for the electrical starting system to switch from an open loop mode of operation to a closed loop mode of operation; a control coil current sensor for generating a control coil current signal in a control coil current feedback loop that is representative of the level of electrical current in the control coil; a first speed switch that switches between an open loop position reference signal that represents a desired position of the rotor in an open loop mode and the estimated rotor position signal that represents the position of the rotor in a closed loop mode to provide a position reference signal; a second speed switch that switches between an open loop current reference signal that represents a desired control coil current level in the open loop mode and a closed loop current reference signal that represents a desired control coil current level in the closed loop mode to provide a control coil current reference signal; an inverter/rectifier system for converting DC power from the DC power system to multiphase alternating current (AC) power on an AC bus; a control coil current regulator system for regulating current through the control coil; wherein the inverter/rectifier system responds to the position reference signal, the current load feedback signal and a current load reference signal to regulate acceleration of the PMM; wherein the control coil current regulator system responds to the control coil current reference signal and the control coil current feedback signal to regulate current in the PMM; and wherein the power transfer system starts in the open loop mode, the rotor position/speed estimator generates the closed loop enable signal that indicates a speed for the electrical starting system to switch from the open loop mode of operation to the closed loop mode of operation at a predetermined rotor speed, and the first and second speed switches respond to the closed loop enable mode to switch from their open loop mode to their closed loop mode.

7. 发明授权

US4574225A Apparatus for accommodating inductive flyback in pulsed motor windings 失效
标题翻译：用于在脉冲电机绕组中容纳感应反激的装置
公开(公告)号：US4574225A
公开(公告)日：1986-03-04
申请号：US637850
申请日：1984-08-06
申请人： Arthur A. Pershall , George H. Holling
发明人： Arthur A. Pershall , George H. Holling
IPC分类号： H02P6/12 , H02P6/02
CPC分类号： H02P6/12
摘要： Control circuits for operating electric motors of the class having windings pulsed in sequence and a magnetic field, the class being exemplified by brushless d.c. motors. Improved apparatus is provided for accommodating flyback action when excitation current through any one of the windings is interrupted by the opening of a switch device (e.g., on-off controlled transistor), whether that device be a sequence power switch or a main switch having a common series relation to all of the power switches and operated with an adjustable duty cycle so as to permit adjustment of motor speed and torque. The flyback apparatus, as here disclosed, provides low loss flyback current paths so as to return inductively stored energy back into the winding when its excitation is interrupted, thereby to enhance motor efficiency while eliminating high open circuit voltages across the switching devices. Negative torque which might be created in the flyback circuits as a result of back e.m.f. in a winding is precluded by threshold circuit elements or by timed control of the conductive and non-conductive states of the flyback current paths.
摘要翻译：用于操作具有顺序脉冲的绕组的电动机的电动机和磁场的控制电路，该类别由无刷直流电机。提供了改进的装置，用于当通过任何一个绕组的激励电流被开关装置（例如开关控制晶体管）的打开中断时，用于适应回扫动作，无论该装置是顺序功率开关还是具有与所有电源开关的通用串联关系，并以可调整的占空比运行，以允许调整电机转速和转矩。如本文所公开的那样，回扫装置提供低损耗回扫电流路径，以便当其激励被中断时将感应存储的能量返回到绕组中，从而提高电动机效率，同时消除开关装置两端的高开路电压。由于返回e.m.f.可能在反激电路中产生的负转矩。在绕组中由阈值电路元件排除或者通过定时控制反激电流路径的导电和非导通状态。

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