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公开(公告)号：US4152637A
公开(公告)日：1979-05-01
申请号：US808067
申请日：1977-06-20
CPC分类号： H02H9/021
摘要： A saturable reactor device for limiting alternating and direct current in an external electric circuit. In one form, the required magneto-motive force (mmf) bias for the saturable reactor is provided by a controllable flux bias element in order to minimize the required bias power. A current sensor provides a control signal representative of the alternating or direct current passing between the source and the load. This signal is used to control the magnitude of the bias so that the mmf provided by the bias element is a function of the current driving the load, permitting a current limiting threshold at a predetermined percentage of the current applied to the load. In an alternate form, the device may be adapted to limit bipolar current in the external circuit. In this form, the device includes an input circuit and an associated direct current saturable reactor limiter. In response to direct current of either positive or negative polarity passing through the external circuit, unidirectional current is driven through the input coil of the direct current limiter. The magnitude of the unidirectional current passing through the input coil is proportional to the magnitude of the current provided by the source. When the unidirectional current exceeds a predetermined threshold, the direct current limiter effectively provides a relatively high current-limiting impedance between the source and load of the external electric circuit. When the unidirectional current is below that threshold, the direct current limiter has minimal effect on the external electric circuit.
摘要翻译： 用于限制外部电路中的交流和直流电流的可饱和电抗器装置。 在一种形式中，可饱和电抗器所需的磁动力（mmf）偏压由可控的磁通偏置元件提供，以便使所需的偏置功率最小化。 电流传感器提供表示在源极和负载之间通过的交流或直流电流的控制信号。 该信号用于控制偏置的幅度，使得由偏置元件提供的mmf是驱动负载的电流的函数，允许以施加到负载的电流的预定百分比的限流阈值。 在替代形式中，该装置可适于限制外部电路中的双极性电流。 在这种形式中，该装置包括输入电路和相关的直流可饱和电抗器限制器。 响应于通过外部电路的正或负极性的直流电流，单向电流通过直流限制器的输入线圈驱动。 通过输入线圈的单向电流的幅度与由源提供的电流的大小成比例。 当单向电流超过预定阈值时，直流限流器在外部电路的源极和负载之间有效提供相对较高的限流阻抗。 当单向电流低于该阈值时，直流限制器对外部电路的影响最小。
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公开(公告)号：US4179729A
公开(公告)日：1979-12-18
申请号：US787930
申请日：1977-04-15
CPC分类号： H02M7/02 , H02J3/34 , H02K11/048 , H02K47/18 , H02M5/32
摘要： A power conversion system for converting between electrical power at different frequencies, including a rotary electrical machine including a rotor, a stator, first and second independently controllable field windings, and at least one armature winding for each phase; a switching circuit including a plurality of switching devices and having first terminal means interconnected with the armature winding which carries a high frequency signal established by the machine, and a second terminal for interconnection with an impedance establishing a lower frequency signal; the first field control circuit for monitoring the machine to sense phase difference between the optimum zero crossings and actual zero crossings of the higher frequency signal for driving the first field winding to adjust the phase of the higher frequency signal to minimize the phase difference; a second field control circuit for modulating the higher frequency signal carried by the armature winding with the lower frequency signal and for monitoring the second terminal means to sense amplitude difference between a selected one of the voltage and current parameters of the lower frequency signal and a reference level for driving the second field winding to adjust that parameter towards the reference level; and a switch firing circuit responsive to the machine voltage and one of the voltage and current parameters of the lower frequency signal at the second terminal means for selectively triggering to the on state and self-commutating to the off state the switching devices synchronously with the zero crossings of the higher frequency signal for transferring power between the higher and lower frequency signals through the switching circuit.
摘要翻译： 一种用于在不同频率的电力之间转换的功率转换系统，包括包括转子，定子，第一和第二可独立控制的励磁绕组的旋转电机以及每相的至少一个电枢绕组。 开关电路，包括多个开关装置，并且具有与承载由所述机器建立的高频信号的所述电枢绕组互连的第一端子装置，以及用于与建立较低频率信号的阻抗互连的第二端子; 第一场控制电路，用于监测机器，以感测最佳过零点和实际过零点之间的相位差，用于驱动第一场线圈，以调整较高频率信号的相位以使相位差最小化; 第二场控制电路，用于利用较低频率信号调制由电枢绕组承载的较高频率信号，并用于监测第二终端装置，以检测低频信号的电压和电流参数中的所选择的一个以及参考 用于驱动第二场绕组以将该参数调整到参考水平; 以及响应于所述机器电压和所述第二端子装置处的所述较低频率信号的电压和电流参数之一的开关点火电路，用于选择性地触发到导通状态并且将所述开关装置与所述开关装置同步地自整定为断开状态 用于通过开关电路在较高和较低频率信号之间传输功率的较高频率信号的交叉。
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公开(公告)号：US4031457A
公开(公告)日：1977-06-21
申请号：US635895
申请日：1975-11-28
申请人： George A. Oberbeck
发明人： George A. Oberbeck
CPC分类号： H02H9/021 , Y10S505/85
摘要： A current limiter to protect circuit elements from excessive current caused by transient load impedance or power supply surges. A multiple branch element magnetic circuit includes at least one saturable branch element inductively coupled by a coil connected in series with the load of an external electric circuit. The magnetic circuit further includes low permeance bias branch element which biases the saturable branch element in a low permeance, saturated state when current through the coil is below a predetermined threshold value, and which biases at least one saturable branch element in its high permeance, non-saturated state when current through the coil is in a predetermined range above and extending from the threshold value. A relatively high permeance shunt branch element provides a shunt path for magnetic flux. The coil provides a relatively high inductive impedance in series with the external electrical circuit when at least one saturable element is in its non-saturated state and provides a relatively low impedance otherwise.
摘要翻译： 电流限制器，用于保护电路元件免受由瞬态负载阻抗或电源浪涌引起的过大电流的影响。 多分支元件磁路包括由与外部电路的负载串联连接的线圈感应耦合的至少一个可饱和分支元件。 磁路还包括低磁导偏压分支元件，当电流通过线圈的电流低于预定阈值时，可饱和状态的饱和状态以饱和状态偏置可饱和分支元件，并且在其高渗透度中偏置至少一个饱和分支元件， 当通过线圈的电流处于上述预定范围并从阈值延伸时的饱和状态。 相对高的磁导分流元件提供用于磁通的分流路径。 当至少一个可饱和元件处于其非饱和状态时，线圈提供与外部电路串联的相对高的电感阻抗，否则提供相对较低的阻抗。
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公开(公告)号：US4122385A
公开(公告)日：1978-10-24
申请号：US807190
申请日：1977-06-16
申请人： George A. Oberbeck
发明人： George A. Oberbeck
CPC分类号： H02H9/021
摘要： A current limiter to protect circuit elements from excessive current caused by transient load impedance or power supply surges. A multiple branch element magnetic circuit includes at least one saturable branch element inductively coupled by a coil connected in series with the load of an external electric circuit. The magnetic circuit further includes lower permeance bias branch element which biases the saturable branch element in a low permeance, saturated state when current through the coil is below a predetermined threshold value, and which biases at least one saturable branch element in its high permeance, non-saturated state when current through the coil is in a predetermined range above and extending from the threshold value. A relatively high permeance shunt branch element provides a shunt path for magnetic flux. The coil provides a relatively high inductive impedance in series with the external electrical circuit when at least one saturable element is in its non-saturated state and provides a relatively low impedance otherwise.
摘要翻译： 电流限制器，用于保护电路元件免受由瞬态负载阻抗或电源浪涌引起的过大电流的影响。 多分支元件磁路包括由与外部电路的负载串联连接的线圈感应耦合的至少一个可饱和分支元件。 磁路进一步包括低通量偏压分支元件，当电流通过线圈的电流低于预定阈值时，可饱和状态的饱和状态以饱和状态偏置可饱和分支元件，并且在其高渗透度中偏置至少一个饱和分支元件， 当通过线圈的电流处于上述预定范围并从阈值延伸时的饱和状态。 相对高的磁导分流元件提供用于磁通的分流路径。 当至少一个可饱和元件处于其非饱和状态时，线圈提供与外部电路串联的相对高的电感阻抗，否则提供相对较低的阻抗。
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公开(公告)号：US4723735A
公开(公告)日：1988-02-09
申请号：US687068
申请日：1984-12-28
申请人： David B. Eisenhaure , James R. Downer , Tim E. Bliamptis , George A. Oberbeck , Susan D. Hendrie
发明人： David B. Eisenhaure , James R. Downer , Tim E. Bliamptis , George A. Oberbeck , Susan D. Hendrie
CPC分类号： F16C32/0444 , B64G1/283 , B64G1/285 , B64G1/288 , B64G1/36 , G05D1/0883 , H02J3/30 , H02K7/025 , B64G1/361 , B64G1/363 , Y02E60/16
摘要： An energy storage attitude control and reference system for a craft including at least two flywheels with their angular momenta balanced to produce zero net angular momentum and at least two motor/generator units each including one of the flywheels in its rotor structure. The system further includes one pair of bearings for supporting each of the flywheels, means for measuring the position of each flywheel relative to its bearings, means for resolving current to and from said motor/generator units, means for applying torques to each flywheel through its respective bearings for controlling attitude of the craft about two mutually perpendicular axes, and means for exerting torques to each flywheel through its respective motor/generator to provide attitude control of the craft about a third axis perpendicular to the first two and for controlling the energy storage level of the flywheels.
摘要翻译： 一种用于飞行器的能量储存姿态控制和参考系统，其包括具有其角动量平衡的至少两个飞轮以产生零净角动量，以及至少两个马达/发电机单元，每个包括其转子结构中的一个飞轮。 该系统还包括一对用于支撑每个飞轮的轴承，用于测量每个飞轮相对于其轴承的位置的装置，用于将电流分离到所述马达/发电机单元和从所述马达/发电机单元分离的装置，用于通过其飞轮向每个飞轮施加转矩的装置 用于控制工作人员围绕两个相互垂直的轴线的姿态的相应的轴承，以及用于通过其相应的电动机/发电机向每个飞轮施加扭矩的装置，以提供围绕垂直于前两个的第三轴的飞行器的姿态控制，并且用于控制能量存储 飞轮的水平。
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公开(公告)号：US4617507A
公开(公告)日：1986-10-14
申请号：US683373
申请日：1984-12-19
申请人： David B. Eisenhaure , James R. Downer , Tim E. Bliamptis , George A. Oberbeck , Susan D. Hendrie
发明人： David B. Eisenhaure , James R. Downer , Tim E. Bliamptis , George A. Oberbeck , Susan D. Hendrie
CPC分类号： H02K7/025 , H02J15/00 , Y02E60/16 , Y10S322/05 , Y10S323/906
摘要： A self-regulating energy storage system including: an a.c. motor/generator including a rotor; a flywheel attached to the motor/generator; a device for monitoring the position of the motor/generator rotor; an element for resolving current to and from the motor/generator; a pulse width modulated bidirectional inverter interconnecting the motor/generator with a power supply bus to be regulated; a summing circuit for determining differences between a reference voltage and the voltage in the power supply bus to be regulated; and a pulse width modulation switch control responsive to the comparator circuit, to the device for monitoring, and to the element for resolving, for actuating the inverter to increase pulse width as a function of increase in the difference between the reference voltage and the voltage on the bus, and to increase current to the motor/generator in the motor direction when the bus voltage exceeds the reference voltage and to increase current from the motor/generator in the generator direction when the reference voltage exceeds the bus voltage.
摘要翻译： 一种自调节储能系统，包括：a。 电机/发电机包括转子; 连接到电动机/发电机的飞轮; 用于监测电动机/发电机转子的位置的装置; 用于将电流分解到电动机/发电机的元件; 将电动机/发电机与要调节的电源总线相互连接的脉宽调制双向逆变器; 求和电路，用于确定参考电压与要调节的电源总线中的电压之间的差异; 以及响应于比较器电路的脉冲宽度调制开关控制，用于监视的装置和用于分解的元件，用于致动逆变器以增加作为参考电压和电压之间的差异的增加的脉冲宽度 总线，并且当总线电压超过参考电压时，在电动机方向上增加电动机/发电机的电流，并且当参考电压超过总线电压时，在发电机方向增加电动机/发电机的电流。
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7.发明授权
公开(公告)号：US4044305A
公开(公告)日：1977-08-23
申请号：US558960
申请日：1975-03-17
申请人： George A. Oberbeck
发明人： George A. Oberbeck
摘要： A device for providing a displacement representative of the magnitude of a signal. The device typically includes a rotor having a plurality of sections of high permeability material separated by areas of high reluctance. A magnetic flux is applied to a section of the rotor to produce an elastic restraint torque varying with angle, while another high permeability section responds to variations in the magnetic flux caused by the signal to produce a torque representative of the signal magnitude. This latter torque moves the rotor to the point where the restraint torque increases sufficiently to balance the signal torque. The resultant angle of rotation represents signal magnitude. The device may also be operated to provide a signal output representative of an input torque or force.
摘要翻译： 用于提供表示信号幅度的位移的装置。 该装置通常包括具有由高磁阻区域分开的多个高磁导率材料段的转子。 磁通量被施加到转子的一部分以产生随着角度变化的弹性约束扭矩，而另一个高磁导率部分响应由该信号引起的磁通量的变化，以产生表示信号幅度的转矩。 后一种扭矩将转子移动到约束力矩足够增加以平衡信号扭矩的点。 合成的旋转角度表示信号幅度。 该装置还可以被操作以提供表示输入扭矩或力的信号输出。
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