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1.发明授权
公开(公告)号：US5570006A
公开(公告)日：1996-10-29
申请号：US261329
申请日：1994-06-16
申请人： George K. Woodworth
发明人： George K. Woodworth
CPC分类号： H02M1/12
摘要： A circuit for correcting perturbations in a power system signal operating at a system line frequency includes a capacitor for drawing a capacitive current and a first inductor for drawing an inductive current substantially equal in amplitude and substantially one hundred eighty degrees out of phase with the capacitive current. The first inductor is connected in parallel with the capacitor to form a storage module for storing energy therein wherein the storage module is tuned to resonate at the system line frequency and wherein the storage module is connected in parallel across the load. A second inductor connected in series between a power source and the load isolates the power source from the load while a second capacitor in series with the second inductor, which together are tuned to resonate at the system line frequency, prevents voltage drop across the second inductor with linear loads.
摘要翻译： 用于校正以系统线频率工作的电力系统信号中的扰动的电路包括用于绘制电容电流的电容器和用于绘制基本上等于幅度的电感电流并且与电容电流基本相差180度的电感 。 第一电感器与电容器并联连接以形成用于在其中存储能量的存储模块，其中存储模块被调谐为以系统线路频率谐振，并且其中存储模块跨负载并联连接。 在电源和负载之间串联连接的第二电感器将电源与负载隔离，同时与第二电感器串联的第二电容器在一起被调谐以在系统线路频率处谐振，从而防止跨第二电感器的电压降 具有线性负载。
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公开(公告)号：US5401209A
公开(公告)日：1995-03-28
申请号：US156548
申请日：1993-11-23
申请人： George J. Ripol , Samuel C. Yakulis , Forrest K. Smith , George K. Woodworth , Craig D. Peterson
发明人： George J. Ripol , Samuel C. Yakulis , Forrest K. Smith , George K. Woodworth , Craig D. Peterson
CPC分类号： A22B3/086 , A22B3/06 , A22C21/0015
摘要： An apparatus for stunning poultry has a conveyor moving along a predetermined path, for suspending the poultry and a compartmentalized basin defining individual compartments for a conducting liquid. The basin is positioned below a portion of the conveyor. A circuit impresses a voltage across the conveyor and each of the individual compartments. The voltages are a function of the position of each of the compartments relative to the conveyor. The voltages are variable so as to produce a current regulated signal flowing between the conveyor and each of the individual compartments when the poultry is in contact with the conducting liquid in any of the individual compartments.
摘要翻译： 用于惊人家禽的装置具有沿着预定路径移动的输送器，用于悬挂禽类和限定用于导电液体的单独隔室的分隔池。 盆地位于输送机的一部分下方。 电路通过输送机和每个单独的隔间施加电压。 电压是每个隔室相对于输送机的位置的函数。 电压是可变的，以便当家禽与任何单个隔室中的导电液体接触时，产生在输送机和每个单独隔室之间流动的电流调节信号。
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公开(公告)号：US5306200A
公开(公告)日：1994-04-26
申请号：US4017
申请日：1993-01-15
申请人： George J. Ripol , Samuel C. Yakulis , Forrest K. Smith , George K. Woodworth , Craig D. Peterson
发明人： George J. Ripol , Samuel C. Yakulis , Forrest K. Smith , George K. Woodworth , Craig D. Peterson
CPC分类号： A22B3/086 , A22B3/06 , A22C21/0015
摘要： An apparatus for stunning poultry has a conveyor moving along a predetermined path, for suspending the poultry and a compartmentalized basin defining individual compartments for a conducting liquid. The basin is positioned below a portion of the conveyor and moves at the same speed as the conveyor. A circuit senses the position of each of the compartments relative to a reference point. A circuit, responsive to the circuit for sensing, impresses a voltage across the conveyor and each of the individual compartments. The voltages are a function of the position of each of the compartments. The voltages are variable so as to produce a current regulated signal flowing between the conveyor and each of the individual compartments when the poultry is in contact with the conducting liquid in any of the individual compartments.
摘要翻译： 用于惊人家禽的装置具有沿着预定路径移动的输送器，用于悬挂禽类和限定用于导电液体的单独隔室的分隔池。 盆地位于输送机的一部分下方并以与输送机相同的速度移动。 电路感测每个隔室相对于参考点的位置。 响应于用于感测的电路的电路在输送机和每个单独隔室上施加电压。 电压是每个隔间的位置的函数。 电压是可变的，以便当家禽与任何单个隔室中的导电液体接触时，产生在输送机和每个单独隔室之间流动的电流调节信号。
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公开(公告)号：US5182464A
公开(公告)日：1993-01-26
申请号：US639070
申请日：1991-01-09
IPC分类号： H02J9/06
CPC分类号： H02J9/06 , Y10T307/615 , Y10T307/735
摘要： A high speed transfer switch is provided for transferring a multiphase load among a number of multiphase A.C. power sources. If the initially selected source deviates from desired limits, the transfer switch transfers the load to an alternate source on a phase-by-phase basis. Antiparallel-connected SCRs are used to allow the load current in each phase to commutate to zero before the load is transferred to the alternate power source.
摘要翻译： 提供了一种用于在多相交流电源中传送多相负载的高速转换开关。 如果初始选择的源偏离期望的限制，则转移开关将负载以逐相的方式传输到备用电源。 反并联连接的SCR用于允许每相中的负载电流在负载传输到备用电源之前转换为零。
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公开(公告)号：US5093614A
公开(公告)日：1992-03-03
申请号：US604262
申请日：1990-10-29
申请人： George K. Woodworth
发明人： George K. Woodworth
摘要： A vectorial neutral is provided in a delta power source. The neutral voltage point is provided by auto-transformers which correct and maintain a near constant voltage in the presence of load or bias currents. With a centered referenced voltage established, full wave rectification of a delta power source is possible.
摘要翻译： 在delta电源中提供矢量中性线。 中性电压点由自动变压器提供，其在负载或偏置电流存在的情况下校正并保持接近恒定的电压。 建立中心参考电压，可以进行三角形电源的全波整流。
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公开(公告)号：US5028825A
公开(公告)日：1991-07-02
申请号：US423090
申请日：1989-10-18
IPC分类号： H02M1/08 , H03K17/79 , H03K17/795
CPC分类号： H03K17/79 , H03K17/7955 , Y10T307/773
摘要： The improved gate drive circuit provides a continuous gate current whenever there is sufficient anode-to-cathode voltage difference across the SCR. This approach described herein eliminates the need to monitor and reapply SCR gate current after each commutation due to load current distortions. Previous SCR gate driver designs used a pulse train of gate currents to provide a means of keeping the SCRs turned on. The pulsed gate control approach has gaps in the SCR's operation and requires significant circuitry that dissipates much more drive energy. Energy for this improved driver circuit is derived from the SCR anode-to-cathode voltage differential. This eliminates the need for individual power supplies to provide isolated gate signals for each SCR. This self-powering feature reduces the intricacy of controlling multiple SCRs in multi-phase or unreferenced power systems. Flexibility provided by this method allows high power SCRs to be directly interfaced to a digital processor-type controller.
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公开(公告)号：US4901005A
公开(公告)日：1990-02-13
申请号：US280470
申请日：1988-12-05
IPC分类号： G01R19/165 , G01R19/175
CPC分类号： G01R19/175
摘要： The invention finds application primarily in three phase power systems having A, B and C voltage phases. The invention includes a first voltage measurement device coupled between the A phase input and the B phase input, having a first measured voltage output. The invention further includes a second voltage measurement device coupled between the A phase input and the C phase input, having a second measured voltage output. The invention also includes a comparator having a first input connected to the first output of the first voltage measurement device and a second input connected to the second output of the second voltage measurement device, for generating a signal when the first measured voltage is equal to and opposite in polarity from the second measured voltage. This signal indicates that a zero crossover event has occurred with the A phase.
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8.发明授权
公开(公告)号：US5323304A
公开(公告)日：1994-06-21
申请号：US89226
申请日：1993-07-08
申请人： George K. Woodworth
发明人： George K. Woodworth
IPC分类号： H02M1/12
CPC分类号： H02M1/12
摘要： A circuit for correcting perturbations in a power system signal operating at a system line frequency includes a capacitor for drawing a capacitive current and a first inductor for drawing an inductive current substantially equal in amplitude and substantially one hundred eighty degrees out of phase with the capacitive current. The first inductor is connected in parallel with the capacitor to form a storage module for storing energy therein wherein the storage module is tuned to resonate at the system line frequency and wherein the storage module is connected in parallel across the load. A second inductor connected in series between a power source and the load isolates the power source from the load.
摘要翻译： 用于校正以系统线频率工作的电力系统信号中的扰动的电路包括用于绘制电容电流的电容器和用于绘制基本上等于幅度的电感电流并且与电容电流基本相差180度的电感 。 第一电感器与电容器并联连接以形成用于在其中存储能量的存储模块，其中存储模块被调谐为以系统线路频率谐振，并且其中存储模块跨负载并联连接。 在电源和负载之间串联连接的第二个电感器将电源与负载隔离开来。
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9.发明授权Power transfer unit for transferring power supplied to a load between power sources responsive to detected SCR gate-cathode voltage 失效用于传输电源的电力传输单元，用于响应于检测到的SCR栅极 - 阴极电压的电源之间的负载
公开(公告)号：US5111059A
公开(公告)日：1992-05-05
申请号：US566928
申请日：1990-08-14
申请人： George K. Woodworth
发明人： George K. Woodworth
CPC分类号： H02J3/04 , H02J3/38 , H02J9/00 , Y10T307/615 , Y10T307/735
摘要： Switching of three phase wye power can be efficiently completed without synchronization between two or more energy sources. The absence of synchronism can be overcome by switching one source off and then in a very short time frame restoring the power from the second power source. The duration of the outage can be controlled and minimized so that the load never loses energy long enough to cause an operational problem. The interruption time period in this description is limited to about 100 microsecond span; long enough to avoid interaction between the separate power sources, yet short enough to be transparent to the load. Electrical transfer of loads between power sources may be controlled precisely if the switching is accomplished using solid state electronic devices. Electronic switching is more reliable and does not generate the arcs during transfers that shorten the life span of mechanical contactors. Electrical switching devices are very efficient and handle high peak power levels; however, their internal losses dissipate heat. These resistive heating losses require cooling to avoid thermal destruction and this cooling adds significant weight and size penalties to a solid state switch. The power transfer unit (PTU) allows power contactors to transfer power from a number of power sources in a controlled manner to minimize disruption at the load. The PTU utilizes a logic controlled electronic switch in parallel with the contacts of a power control relay. The combination of an electronically controlled switch and an electro-mechanical relay provide precise switch timing with minimum power dissipation, in a package similar in size to that of a power relay alone. The physical package of the PTU relay may be similar in size to the present relay due to the elimination of arc quenching components and over-designed contacts.
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公开(公告)号：US4761563A
公开(公告)日：1988-08-02
申请号：US113926
申请日：1987-10-27
申请人： John M. Ross , George K. Woodworth
发明人： John M. Ross , George K. Woodworth
CPC分类号： H02J9/066 , H02J3/38 , H02J2009/068 , H02J9/061 , Y10T307/615 , Y10T307/625 , Y10T307/707 , Y10T307/735
摘要： An asynchronous multiphase switching method and apparatus are disclosed which transfers a system load between two asynchronous AC power sources in an improved manner. It operates as a make-before-break switch to provide uninterrupted power to the system load during the transfer while minimizing voltage and current fluctuations. The control circuitry allows energy to be supplied to the load during the transition without allowing current to flow between the power sources. A matrix of SCRs is used to transfer the load between the two power sources. The switches to be gated are determined by the relative timing relationships of the existing and takeover voltage waveforms. By altering the pattern of the switches which are gated and by controlling the direction of energy flow, the transition can be made between the power sources without interruption of power.
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