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1. 发明授权

US4156172A Main field current transient control circuit for dynamoelectric machines 失效
标题翻译：电动机的主励磁电流瞬态控制电路
公开(公告)号：US4156172A
公开(公告)日：1979-05-22
申请号：US716917
申请日：1976-08-23
申请人： David J. Hucker , Norbert L. Schmitz , Timothy F. Glennon
发明人： David J. Hucker , Norbert L. Schmitz , Timothy F. Glennon
IPC分类号： H02P1/50 , H02H7/06 , H02K19/36 , H02P9/10 , H02P9/30 , H02P23/00 , H02K19/00
CPC分类号： H02K19/365 , H02H7/067 , H02K19/36 , H02P9/102 , H02P2101/30
摘要： In a synchronous generator-motor, having both its main armature windings and exciter winding located on the stator and both the main field winding and the exciter armature windings including a rectifier for providing DC current to the main field located on the rotor and also including a voltage regulator responsive to the main armature voltage for regulating the current applied to the exciter field; the effects of transient currents in the main field windings resulting from load removal during the generator mode of operation and the voltages induced during motor start-up are substantially reduced by utilizing a resistive circuit operatively controlled by a transistor switching network that is in turn responsive to the exciter voltage and the induced voltage in the main field windings.
摘要翻译：在同步发电机 - 电动机中，其主电枢绕组和位于定子上的励磁机绕组，以及主励磁绕组和励磁机电枢绕组，包括用于向位于转子上的主电场提供DC电流的整流器，并且还包括电压调节器响应于主电枢电压，用于调节施加到励磁场的电流; 通过利用由晶体管切换网络可操作地控制的电阻电路，大大减少了在发电机工作模式期间由负载移除引起的主电场绕组中的瞬态电流的影响以及电动机起动期间感应的电压的影响，主励磁绕组中的励磁电压和感应电压。

2. 发明授权

US4467267A Alternator excitation system 失效
标题翻译：交流发电机励磁系统
公开(公告)号：US4467267A
公开(公告)日：1984-08-21
申请号：US462017
申请日：1983-01-28
申请人： David J. Hucker , Norbert L. Schmitz
发明人： David J. Hucker , Norbert L. Schmitz
IPC分类号： H02K19/30 , H02P9/36 , H02P9/10 , H02P9/30
CPC分类号： H02P9/36 , H02K19/30
摘要： An excitation system for a brushless synchronous alternator includes an exciter having a stator which includes first and second sets of field coils respectively coupled to a source of DC power and in series with polyphase AC output current developed by the main generator. A base level of exciter field current is provided by the DC current delivered to the first set of field coils while a second variable amount of field current is provided by the AC output current delivered to the second set of field coils. The exciter also includes a rotor structure having first and second sets of armature windings which develop first and second exciter currents in response to movement of the rotor structure within the magnetic fields set up by the first and second sets of exciter field coils. The first and second exciter currents are added, rectified and delivered to a set of main generator field windings. By dividing the responsibility for providing exciter field current in this fashion, transient response is improved and overall length and weight of the generator package are decreased.
摘要翻译：一种用于无刷同步交流发电机的励磁系统包括具有定子的励磁机，所述定子包括分别耦合到直流电源并与主发电机产生的多相交流输出电流串联的第一组和第二组励磁线圈。励磁场电流的基极电平由传递到第一组励磁线圈的直流电流提供，而第二可变量的励磁电流由提供给第二组励磁线圈的交流输出电流提供。励磁机还包括具有第一和第二组电枢绕组的转子结构，其响应于在由第一和第二组励磁励磁线圈设置的磁场内的转子结构的运动而产生第一和第二激励器电流。第一和第二激励电流被相加，整流并输送到一组主发电机励磁绕组。通过以这种方式分配提供励磁机励磁电流的责任，瞬态响应得到改善，发电机组的整体长度和重量减小。

3. 发明授权

US4131844A Static voltage balancer 失效
标题翻译：静态电压平衡器
公开(公告)号：US4131844A
公开(公告)日：1978-12-26
申请号：US798602
申请日：1977-05-19
申请人： David J. Hucker , Norbert L. Schmitz
发明人： David J. Hucker , Norbert L. Schmitz
IPC分类号： H02J3/26 , G05F1/30
CPC分类号： H02J3/26 , Y02E40/50
摘要： An in-line voltage balancing circuit sums a trim voltage with each phase voltage of a polyphase generating system to assure that the voltage between each phase and neutral is equal to the average voltage of all the phases. An individual error signal representative of the difference between each phase voltage and the average voltage is provided to individual phase modulator circuits. The phase modulator circuits develop pulse width modulated signals wherein the pulse width is proportional to the amplitude of the error signal. The outputs of the phase modulator circuits are connected to switching amplifiers which provide trim voltages proportional to the phase modulated signals. Summing transformers are employed to sum the individual trim voltage with appropriate phase voltage so that the voltage for each phase equals the average voltage.
摘要翻译：在线电压平衡电路将修整电压与多相发电系统的每相电压相加，以确保每相和中性点之间的电压等于所有相的平均电压。每个相位电压和平均电压之间的差异代表每个相位调制器电路的单个误差信号。相位调制器电路产生脉冲宽度调制信号，其中脉冲宽度与误差信号的振幅成比例。相位调制器电路的输出连接到提供与相位调制信号成比例的调节电压的开关放大器。采用求和变压器将各个调整电压与适当的相电压相加，使每相的电压等于平均电压。

4. 发明授权

US4063144A Inverter for providing a sinusodial output having a low harmonic content 失效
标题翻译：用于提供具有低谐波含量的正弦波输出的逆变器
公开(公告)号：US4063144A
公开(公告)日：1977-12-13
申请号：US670539
申请日：1976-03-25
申请人： David J. Hucker , Norbert L. Schmitz
发明人： David J. Hucker , Norbert L. Schmitz
IPC分类号： H02M7/48 , H02M7/49 , H02M1/12
CPC分类号： H02M7/49
摘要： A DC to AC inverter in which a composite waveform synthesizing a sinusoidal waveform and having three incremental steps for each quarter cycle is formed by summing an alternating stepped waveform having three steps for half cycle, with a square wave in phase therewith and having a frequency three times greater than the alternating stepped waveform. In a three-phase embodiment of the inverter, each of three stages has a coil that is appropriately switched to opposite polarity terminals of a DC voltage source to form beginning and end segments of the alternating waveform, and a single square wave for all three phases is developed by three series-connected windings respectively inductively coupled with the three coils. The single square wave is added to all three alternating stepped waveforms to form the three composite output waveforms of the inverter.
摘要翻译：通过将具有三个步进的半周期的交替阶跃波形与其相位相同的方波相加并形成具有频率三的直流到交流逆变器，其中合成正弦波形并具有每四分之一周期的三个增量步长的复合波形形成大于交替阶梯波形。在逆变器的三相实施例中，三级中的每一级具有适当地切换到直流电压源的相反极性端子的线圈，以形成交变波形的开始和结束段，以及用于所有三相的单个方波由三个串联绕组分别与三个线圈感应耦合开发。将单个方波加到所有三个交替阶梯波形中，形成逆变器的三个复合输出波形。

5. 发明授权

US4689543A Frequency and voltage control for inverter powered AC motor 失效
标题翻译：变频器供电的交流电机的频率和电压控制
公开(公告)号：US4689543A
公开(公告)日：1987-08-25
申请号：US813996
申请日：1985-12-27
申请人： David J. Hucker
发明人： David J. Hucker
IPC分类号： H02P1/26 , H02P27/08 , H02P5/40
CPC分类号： H02P27/08 , H02P1/26
摘要： An induction motor is powered from a DC source through a DC to AC inverter. The inverter frequency and the AC output voltage of the inverter are controlled as a function of motor current to minimize motor starting current and to accommodate a range of DC supply voltages.
摘要翻译：感应电动机由直流电源通过直流到交流逆变器供电。逆变器频率和交流输出电压作为电机电流的函数进行控制，以最大限度地减少电机起动电流并适应一定范围的直流电源电压。

6. 发明授权

US4517483A Permanent magnet rotor with saturable flux bridges 失效
标题翻译：具有饱和磁通桥的永磁转子
公开(公告)号：US4517483A
公开(公告)日：1985-05-14
申请号：US565345
申请日：1983-12-27
申请人： David J. Hucker , Donald A. Straznickas
发明人： David J. Hucker , Donald A. Straznickas
IPC分类号： H02K1/27 , H02K21/12
CPC分类号： H02K1/278
摘要： A rotor structure for a permanent magnet generator, or PMG, includes a plurality of spaced apart magnets and magnetic circuit elements in series with the magnets on the rotor to act as flux limitation means to thereby limit the output voltage of the permanent magnet generator at low current levels.
摘要翻译：用于永磁发电机或PMG的转子结构包括与转子上的磁体串联的多个间隔开的磁体和磁路元件，用作磁通限制装置，从而将永磁发电机的输出电压限制在低当前水平。

7. 发明授权

US4139807A Rotor short-circuiting switch 失效
标题翻译：转子短路开关
公开(公告)号：US4139807A
公开(公告)日：1979-02-13
申请号：US815068
申请日：1977-07-12
申请人： David J. Hucker
发明人： David J. Hucker
IPC分类号： H02P1/50
CPC分类号： H02P1/50
摘要： A transistor switch short-circuits the main field rotor winding of a synchronous machine during start-up. A transistor is connected across the main field rotor winding and is responsive to the polarity of the voltage induced in the main field rotor winding by the main stator winding. When the voltage is of one polarity, the transistor conducts to short-circuit the main field rotor winding. When the voltage across the main rotor winding is of the opposite polarity, diodes limit the voltage buildup. The transistor which shorts the main field rotor winding is rendered inoperative when the machine is operating at or near synchronous speed.
摘要翻译：晶体管开关在启动期间使同步电机的主励磁转子绕组短路。晶体管跨越主场转子绕组连接，并且响应于主定子绕组在主场转子绕组中感应的电压的极性。当电压为一个极性时，晶体管导通，使主励磁转子绕组短路。当主转子绕组两端的电压极性相反时，二极管限制电压的积累。当机器以同步速度或接近同步速度运行时，使主场转子绕组短路的晶体管不工作。

8. 发明授权

US4052658A Inverter circuit for producing synthesized sinusoidal waveforms 失效
标题翻译：用于生成合成SINUSOIDAL波形的逆变器电路
公开(公告)号：US4052658A
公开(公告)日：1977-10-04
申请号：US733106
申请日：1976-10-18
申请人： David J. Hucker
发明人： David J. Hucker
IPC分类号： H02M7/48 , H02M7/49 , H02M1/12
CPC分类号： H02M7/49
摘要： An inverter circuit which provides a synthesized sinusoidal output waveform having a low harmonic content. The inverter is light in weight, highly efficient and driven by a fundamental rectangular component having a frequency equal to the desired synthesized sinusoidal output frequency. Single-phase or three-phase output is provided.

9. 发明授权

US4625160A Variable speed constant frequency generating system 失效
标题翻译：变速恒频发生系统
公开(公告)号：US4625160A
公开(公告)日：1986-11-25
申请号：US682250
申请日：1984-12-17
申请人： David J. Hucker
发明人： David J. Hucker
IPC分类号： H02K3/16 , H02K16/02 , H02K19/26 , H02P9/30 , H02P9/42 , H02K7/10 , H02K19/10 , H02K23/60
CPC分类号： H02K19/26 , H02K16/025 , H02K3/16 , H02P9/42 , H02P2101/30
摘要： A variable speed constant frequency generating system for generating constant frequency electrical output power from a variable speed source of motive power includes an exciter for generating excitation current, a main generator for developing the output power, both of the exciter and main generator being driven by a shaft coupled to the motive power source and power converters mounted on the shaft to transfer power between the exciter and the main generator. At shaft speeds below synchronous speed, i.e. that speed which would produce the desired output frequency when DC power is coupled to the main generator field windings, the exciter output is rectified and inverted so that alternating current power of proper frequency is delivered to the field windings of the main generator to maintain the output of the generator at a constant frequency. At synchronous speed, the power converters transfer substantially only DC power to the main generator windings. At speeds above synchronous speed, power is returned back to the exciter to cause same to operate as a motor and apply negative torque to the shaft and thereby maintain the output power at the desired frequency.
摘要翻译：用于从可变速动力源产生恒定频率电力输出功率的变速恒定频率发生系统包括用于产生励磁电流的励磁机，用于产生输出功率的主发电机，所述励磁机和主发电机都由一个耦合到动力源的轴和安装在轴上的功率转换器以在励磁机和主发电机之间传递动力。在低于同步速度的轴速度，即当直流功率耦合到主发电机励磁绕组时将产生期望输出频率的速度，激励器输出被整流和反相，使得适当频率的交流功率被传递到励磁绕组的主发电机，以将发电机的输出保持在恒定的频率。在同步速度下，功率转换器只将直流电转移到主发电机绕组。在超过同步速度的速度下，功率返回到励磁机，使其作为电动机工作，并向轴施加负转矩，从而将输出功率保持在所需的频率。

10. 发明授权

US4139780A Multi-channel generator drive system 失效
标题翻译：多通道发电机驱动系统
公开(公告)号：US4139780A
公开(公告)日：1979-02-13
申请号：US853232
申请日：1977-11-17
申请人： David J. Hucker , Timothy F. Glennon
发明人： David J. Hucker , Timothy F. Glennon
IPC分类号： H02H7/06 , H02H7/093 , H02J3/38 , H02P9/04 , H02P9/06 , H02J4/00
CPC分类号： H02H7/062 , H02H7/093 , Y10T307/729
摘要： A multi-channel generating system wherein each channel is provided with a permanent magnet generator (PMG) coupled directly to the output of a constant speed drive. An overrunning clutch is located between the PMG and the generator. The frequency of the signal from the PMG is proportional to the output speed of the constant speed drive. A circuit provides underspeed information if the speed, as indicated by the PMG, drops below a minimum speed represented by a reference voltage. The underspeed information controls the excitation and de-excitation of the generator exciter voltage and a line contactor switch.
摘要翻译：一种多通道发生系统，其中每个通道设置有直接与恒速驱动器的输出相连的永磁发电机（PMG）。超级离合器位于PMG和发电机之间。来自PMG的信号的频率与恒速驱动器的输出速度成比例。如果由PMG指示的速度低于由参考电压表示的最小速度，则电路提供欠速信息。低速信息控制发电机励磁电压的激励和去激励以及线路接触器开关。

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