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1. 发明授权

US4001670A Static reactive power generating apparatus 失效
标题翻译：静态反应发电设备
公开(公告)号：US4001670A
公开(公告)日：1977-01-04
申请号：US575888
申请日：1975-05-08
申请人： Laszlo Gyugyi , John Rosa , Eric J. Stacey
发明人： Laszlo Gyugyi , John Rosa , Eric J. Stacey
IPC分类号： G05F1/70 , H02J3/18 , H02M5/27
CPC分类号： H02J3/1857 , H02M5/271 , Y02E40/26
摘要： An AC/AC frequency changer operating under a one to one frequency ratio has its input coupled to a power system of same frequency and voltage, with an inductor connected between its output and input terminals. The output voltage is controlled so as to deviate by a predetermined amount from the input voltage so that reactive power flows from the output to the input which, owing to the inherent phase inversion in the frequency changer, causes reactive input current and reactive output current to be summed up directly at the input terminals. As a result, the frequency changer requires only a power rating which is half the reactive power which it can supply to the power system.

2. 发明授权

US5337227A Harmonic neutralization of static inverters by successive stagger 失效
标题翻译：静态逆变器谐波中和通过连续错开
公开(公告)号：US5337227A
公开(公告)日：1994-08-09
申请号：US870128
申请日：1992-04-15
申请人： Eric J. Stacey , John Rosa
发明人： Eric J. Stacey , John Rosa
IPC分类号： H02M7/48 , H02M7/49 , H02M1/12
CPC分类号： H02M7/49
摘要： Quasi-harmonic neutralized inverter systems are provided with interphase transformers connected in a waffle tree configuration and each having a pair of inputs for receiving staggered voltage waveforms, wherein the stagger angle of the voltage waveforms reduces a harmonic component of an output voltage on an output terminal of each interphase transformer. Inverters produce voltage waveforms at phase angles necessary to provide the required stagger angles at the inputs of the interphase transformers in a first stage of the waffle tree configuration. A method for quasi-harmonic neutralization of voltages in an inverter system is also provided, in which interphase transformers, each having a pair of inputs for receiving staggered voltage waveforms, are connected in a waffle tree configuration, such that the stagger angle of the voltage waveforms reduces a harmonic component of an output voltage on an output terminal of each interphase transformer. Voltage waveforms at phase angles necessary to provide the stagger angles are applied to the inputs of the interphase transformers in a first stage of the waffle tree configuration.
摘要翻译：准谐波中和逆变器系统设置有以华夫饼树结构连接的相间变压器，每个具有用于接收交错电压波形的一对输入，其中电压波形的交错角度减小输出端子上的输出电压的谐波分量的每个相间变压器。在华夫饼树配置的第一阶段，逆变器产生在相位变压器的输入处提供所需交错角所必需的相位角的电压波形。还提供了一种用于逆变器系统中的电压的准谐波中和的方法，其中每个具有用于接收交错电压波形的一对输入的相间变压器以华夫饼树结构连接，使得电压的交错角波形可以减少每个相间变压器的输出端子上的输出电压的谐波分量。提供交错角所需的相位角的电压波形在华夫饼树配置的第一阶段被施加到相间变压器的输入端。

3. 发明授权

US5515264A Optimized high power voltage sourced inverter system 失效
标题翻译：优化的高功率电压源逆变器系统
公开(公告)号：US5515264A
公开(公告)日：1996-05-07
申请号：US447034
申请日：1995-05-22
申请人： Eric J. Stacey
发明人： Eric J. Stacey
IPC分类号： H02M7/48 , H02M7/49 , H02M7/5387
CPC分类号： H02M7/49
摘要： A voltage sourced inverter system includes an inverter for coupling to a DC power source and an interphase transformer bank coupled to the inverter. The inverter includes a number of poles for providing discretely displaced voltage waveforms to the interphase transformer bank. A main transformer operably coupled to the interphase transformer bank transforms power therefrom into an AC power output. The interphase transformer bank may be a singular stage or a hierarchial arrangement of plural interphase transformers which combine the discretely displaced voltage waveforms to reduce selected harmonic components therefrom. The inverter may provide notched waveforms to remove additional selected harmonics from the discretely displaced voltage waveforms. A method of inverting DC power into AC power with reduced selected harmonic components is also disclosed.
摘要翻译：电压源逆变器系统包括用于耦合到DC电源的逆变器和耦合到逆变器的相间变压器组。逆变器包括用于向相间变压器组提供离散位移的电压波形的多个极。可操作地耦合到相间变压器组的主变压器将其功率转换成AC功率输出。相间变压器组可以是组合离散位移的电压波形以减少其中的所选谐波分量的多个相间变压器的单级或分层布置。逆变器可以提供带槽波形以从离散位移的电压波形中去除附加的选定谐波。还公开了一种将DC功率转换成具有降低的所选谐波分量的AC电力的方法。

4. 发明授权

US4479160A Band-pass sequence filters for symmetrical components of multiphase AC power systems 失效
标题翻译：多相交流电源系统对称组件的带通序列滤波器
公开(公告)号：US4479160A
公开(公告)日：1984-10-23
申请号：US490697
申请日：1983-05-02
申请人： Eric J. Stacey
发明人： Eric J. Stacey
IPC分类号： G01R29/16 , H03H11/12 , H02H3/26
CPC分类号： H03H11/126 , G01R29/16 , Y10T307/839
摘要： A three-phase symmetrical component active band-pass filter includes three 120.degree. phase shift circuits which are connected in a closed loop fashion such that each phase shift circuit receives an input signal from one phase of an associated power system and a second signal from the output of one of the other phase shift circuits. A voltage tunable filter is formed by using multipliers to couple some fraction of the output of each phase shift circuit to a summing point at the input of another phase shift circuit. Phase comparators and an integrator can be added to achieve a self-tracking tuning arrangement.
摘要翻译：三相对称分量有源带通滤波器包括以闭环方式连接的三个120°相移电路，使得每个相移电路接收来自相关电力系统的一相的输入信号和来自相关电力系统的第二信号其他相移电路之一的输出。通过使用乘法器将每个相移电路的输出的一些部分耦合到另一相移电路的输入端的求和点来形成电压可调谐滤波器。可以添加相位比较器和积分器以实现自跟踪调谐布置。

5. 发明授权

US4309752A Cycloconverter apparatus with controllable end stop firing pulse control means 失效
标题翻译：具有可控停止点火脉冲控制装置的旋转变频器装置
公开(公告)号：US4309752A
公开(公告)日：1982-01-05
申请号：US95803
申请日：1979-11-19
申请人： Eric J. Stacey
发明人： Eric J. Stacey
IPC分类号： H02M5/27 , H02P13/30
CPC分类号： H02M5/272
摘要： In power conversion apparatus such as a naturally commutated cycloconverter for use in converting the output of a variable speed generator to a constant frequency, there is provided an end stop control circuit for ensuring commutation of power switching devices that includes timing wave generators for both rectification and inversion end stops. The timing wave generators are phase locked with the generator outputs but are controllable by end stop bias signal derived from a variable system parameter that may be independent of the source, such as load current to provide prompt protection against converter malfunctions due to excess load currents.Further provided is an excess current detector employing, for each phase, a pair of high slew rate, high current unipolar output op amps connected in a voltage follower configuration with a common pull-up resistor and a common load capacitor to develop a peak current signal representing the greater of the positive and negative peaks of the alternating phase current.
摘要翻译：在诸如用于将变速发电机的输出转换为恒定频率的自然换向循环换流器的功率转换装置中，提供了一种用于确保功率开关装置的换向的终止停止控制电路，其包括用于整流和反转端停。定时波发生器与发生器输出相位锁定，但可由可能独立于源的可变系统参数导出的终止偏置信号控制，例如负载电流，以提供对过载电流引起的转换器故障的及时保护。还提供了一种过电流检测器，对于每个相，采用一对以电压跟随器结构连接的高压摆率，高电流单极性输出运算放大器与公共上拉电阻器和公共负载电容器，以产生峰值电流信号代表交变相电流的正峰值和负峰值越大。

6. 发明授权

US4991429A Torque angle and peak current detector for synchronous motors 失效
标题翻译：同步电机的转矩角和峰值电流检测器
公开(公告)号：US4991429A
公开(公告)日：1991-02-12
申请号：US458216
申请日：1989-12-28
申请人： Eric J. Stacey , Geoffrey M. Smith
发明人： Eric J. Stacey , Geoffrey M. Smith
IPC分类号： G01R31/34
CPC分类号： G01R31/34
摘要： A torque angle and peak current detector for a three-phase synchronous motor utilizes a phase-locked loop to generate a digital stator field position signal phase locked to the stator current. The phases of digital -sine and cosine reference signals generated from the field position signal are compared with x and y stator current component signals in multiplying digital to analog converters to generate a phase error signal which is driven to zero with the reference signals in quadrature with the current component signals at phase lock. The reference signals are also multiplied by in-phase current component signals and the products are summed to generate the peak current signal. A digital rotor angle position generated by a resolver and an analog to digital converter is subtracted from the digital field position signal to generate the torque angle signal.
摘要翻译：用于三相同步电动机的转矩角和峰值电流检测器利用锁相环产生锁定到定子电流的数字定子磁场位置信号。将从场位置信号产生的数字 - 和余弦参考信号的相位与x和y定子电流分量信号进行比较，以将数模转换器相乘，以产生相位误差信号，其中参考信号与电流分量信号处于相位锁定状态。参考信号也乘以同相电流分量信号，并将乘积相加以产生峰值电流信号。从数字场位置信号中减去由解算器和模数转换器产生的数字转子角位置，以产生转矩角信号。

7. 发明授权

US4963839A Wide bandwidth phase locked loop circuit with sliding window averager 失效
标题翻译：宽带锁相环电路与滑动窗口平均机
公开(公告)号：US4963839A
公开(公告)日：1990-10-16
申请号：US401672
申请日：1989-09-01
申请人： Eric J. Stacey
发明人： Eric J. Stacey
IPC分类号： H03L7/093
CPC分类号： H03L7/093
摘要： Broadband, single and multiphase phase lock loop circuits utilize a sliding window averager to remove the second harmonic and other ac components from a phase error signal which is the product of a sinusoidal or square wave source signal and a corresponding reference signal synthesized from a variable frequency signal produced by a voltage controlled oscillator as a function of the integratal of the phase error signal. The sliding window averager maintains a running average of a number of most recent samples of the phase error signal taken over a selected interval which is preferably one-half cycle of the source signal. Also preferably, the sliding window averager is clocked by the variable frequency signal generated by the voltage controlled oscillator.
摘要翻译：宽带，单相和多相锁相环路利用滑动窗口平均器从相位误差信号中去除二次谐波和其它交流分量，相位误差信号是正弦波或方波源信号与从可变频率合成的相应参考信号的乘积由压控振荡器产生的信号作为相位误差信号的积分的函数。滑动窗口平均器维持在选择的间隔中取得的相位误差信号的最近样本数的运行平均值，优选地是源信号的两个半周期。还优选地，滑动窗口平均器由由压控振荡器产生的可变频率信号计时。

8. 发明授权

US4935686A Ac motor drive with switched autotransformer coupling 失效
标题翻译：交流自耦变压器耦合的交流电机驱动
公开(公告)号：US4935686A
公开(公告)日：1990-06-19
申请号：US395629
申请日：1989-08-18
申请人： Eric J. Stacey
发明人： Eric J. Stacey
IPC分类号： H02P1/26 , H02P1/46
CPC分类号： H02P1/26 , H02P1/46
摘要： An ac drive in which the three phase ac current produced by a current controlled inverter is applied to the stator winding of a synchronous or induction motor through an autotransformer equipped with a neutral shorting switch. For starting from zero speed and operation at very low speeds below the speed at which the autotransformer could provide adequate volt-seconds for operation of the motor, the neutral shorting switch is opened so that the current is applied essentially directly to the stator. At normal and high speeds, the neutral shorting switch is closed so that the voltage to the motor stator is increased by the turns ratio of the autotransformer thereby increasing the speed range of the motor. By providing a number of sets of taps on the autotransformer each with a neutral shorting switch, the ac drive mimics the characteristics of a drive with a multi-ratio gear box.
摘要翻译：由电流控制逆变器产生的三相交流电流通过配备有中性短路开关的自耦变压器施加到同步或异步电动机的定子绕组的交流驱动器。为了从零速度起动并以非常低的速度运行，低于自动变压器可以提供足够的电压 - 秒来运行电动机的速度，打开中性短路开关，使得电流基本上直接施加到定子。在正常和高速下，中性短路开关闭合，使得电动机定子的电压通过自耦变压器的匝数比增加，从而增加电动机的转速范围。通过在自耦变压器上提供多个抽头，每个都带有中性短路开关，交流变频器通过多速比齿轮箱模拟变频器的特性。

9. 发明授权

US4766359A Absolute shaft position sensing circuit 失效
标题翻译：绝对轴位置检测电路
公开(公告)号：US4766359A
公开(公告)日：1988-08-23
申请号：US27468
申请日：1987-03-18
申请人： Geoffrey M. Smith , Eric J. Stacey
发明人： Geoffrey M. Smith , Eric J. Stacey
IPC分类号： G01D5/245 , G05B1/06
CPC分类号： G01D5/2457
摘要： An absolute shaft position sensing circuit uses a magnetic sensor and a toothed wheel to produce two pulse trains which are used to determine the absolute position of a shaft which is coupled to the toothed wheel. One pulse train includes regularly spaced pulses which are fed to a phase locked loop to produce an oscillating output signal. A counter counts this signal and produces an output count which is representative of the relative angular position of the shaft. A second pulse train includes an irregularly spaced pulse. Circuitry is provided to detect the occurrence of this irregularly spaced pulse and to reset the counter in response to that occurrence, thereby making the count representative of the absolute angular position of the shaft.
摘要翻译：绝对轴位置检测电路使用磁传感器和齿轮来产生两个脉冲串，其用于确定耦合到齿轮的轴的绝对位置。一个脉冲串包括规则间隔的脉冲，其被馈送到锁相环以产生振荡输出信号。计数器对该信号进行计数，并产生代表轴的相对角位置的输出计数。第二脉冲串包括不规则间隔的脉冲。提供电路以检测这种不规则间隔的脉冲的发生，并且响应于该事件复位计数器，从而使计数表示轴的绝对角位置。

10. 发明授权

US4303972A Controlling the circulating current in naturally commutated static power converters 失效
标题翻译：控制自然换向静态功率转换器中的循环电流
公开(公告)号：US4303972A
公开(公告)日：1981-12-01
申请号：US95820
申请日：1979-11-19
申请人： Eric J. Stacey , Donal E. Baker , Charles L. Doughman , Ralph D. Jessee
发明人： Eric J. Stacey , Donal E. Baker , Charles L. Doughman , Ralph D. Jessee
IPC分类号： H02M5/27 , H02P13/30
CPC分类号： H02M5/27
摘要： The firing pulses to the nonload carrying bank only of the naturally commutated thyristor power circuit of a static power converter are retarded to reduce or eliminate the interbank circulating current. In one form of the invention, half wave rectified load current signals are summed with the output waveform reference signal applied to the positive and negative bank firing pulse generators in a sense to retard the pulses in the nonload carrying bank. In another form of the invention, the inversion end stops are used to generate the retarded firing pulses in the nonload carrying bank.
摘要翻译：延迟到静态功率转换器的自然换向晶闸管电源电路的无负载库的点火脉冲，以减少或消除同步循环电流。在本发明的一种形式中，半波整流负载电流信号与施加到正和负组触发脉冲发生器的输出波形参考信号相加，从而阻止无负载载波组中的脉冲。在本发明的另一形式中，使用反转端止动件来产生无载运行组中的延迟点火脉冲。

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