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1.发明授权
公开(公告)号：US3882370A
公开(公告)日：1975-05-06
申请号：US41600673
申请日：1973-11-15
Applicant: GEN ELECTRIC
Inventor： MCMURRAY WILLIAM
Abstract: In a variable operating frequency inverter or other converter with a parallel resonant commutation circuit, the frequency changes with the load to control the reactive power available for commutation of the thyristors or other controlled power devices. A constant turn-off time control circuit automatically adjusts the operating frequency so that the reactive power for commutation is optimum and reliability is improved. The control circuit and method utilizes sensed instantaneous power circuit parameters from which the future state of the commutating capacitor voltage can be predicted, and a computation circuit for determining the timing of firing signals to provide an approximately constant turn-off time for a conducting device.
Abstract translation: 在具有并联谐振换向电路的可变工作频率逆变器或其它转换器中，频率随负载而变化，以控制可用于可控硅或其他受控功率器件的换向的无功功率。 恒定关断时间控制电路自动调节工作频率，使换向无功功率最优化，提高可靠性。 控制电路和方法利用感测的瞬时功率电路参数，从而可以预测换向电容器电压的未来状态;以及计算电路，用于确定触发信号的定时以为导电装置提供大致恒定的关断时间。
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2.发明授权Control of cycloconverter systems having a parallel resonant commutation circuit 失效具有并联谐振电路的循环系统的控制
公开(公告)号：US3882369A
公开(公告)日：1975-05-06
申请号：US41949073
申请日：1973-11-28
Applicant: GEN ELECTRIC
Inventor： MCMURRAY WILLIAM
CPC classification number: H02M5/271
Abstract: A high frequency link cycloinverter and cycloconverter system having a parallel resonant comutation circuit operated at a variable frequency to control the reactive power available for commutation of the thyristors or other controlled power devices. A firing circuit component for computing the timing of a cycloconverter firing angle retard limit signal for an incoming device provides as a minimum a predetermined constant turn-off time for the outgoing device. For the cycloinverter system added turn-off time is computed to allow for simultaneous inverter and cycloconverter commutations at the retard limit. The control circuit and method utilizes sensed instantaneous power circuit parameters from which the state of the commutating capacitor voltage can be predicted, and a computation circuit for timing the generation of the retard limit signal.
Abstract translation: 具有以可变频率操作的并联谐振转换电路以控制可用于可控硅或其它受控功率器件的换向的无功功率的高频链路循环逆变器和循环换流器系统。 用于计算输入装置的循环换流器触发角延迟限制信号的定时的点火电路部件为输出装置提供至少一个预定的恒定关断时间。 对于循环逆变器系统，计算添加的关断时间以允许在延迟极限处同时进行逆变器和循环换流器换向。 控制电路和方法利用可以预测换向电容器电压的状态的感测瞬时功率电路参数，以及用于对延迟限制信号的产生进行定时的计算电路。
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公开(公告)号：US3919620A
公开(公告)日：1975-11-11
申请号：US47241574
申请日：1974-05-22
Applicant: GEN ELECTRIC
Inventor： MCMURRAY WILLIAM , PLUNKETT ALLAN B , STITT THOMAS D
CPC classification number: H02M7/5155
Abstract: An impulse commutated inverter is provided with control apparatus for firing a first commutating rectifier, sensing the subsequent flow of capacitor overcharge current in a parallel reset resistor and delaying a fixed time interval after current flow is first sensed before an opposite serially connected commutating rectifier is permitted to fire. The inverter is thus allowed to generate minimum pulse widths to achieve the maximum possible output voltage in pulse width modulation operation without increasing the risk of shoot-through resulting from simultaneous conduction of the two commutating rectifiers.
Abstract translation: 脉冲整流逆变器设置有用于点火第一整流整流器的控制装置，感测并联复位电阻器中的电容器过充电电流的随后流动，并且在允许在相反的串联连接整流器之前首先感测到电流流动之后延迟固定的时间间隔 开火。 因此，逆变器被允许产生最小脉冲宽度以在脉宽调制操作中实现最大可能的输出电压，而不增加由两个换向整流器的同时导通引起的直通的风险。
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4.发明授权
公开(公告)号：US3582756A
公开(公告)日：1971-06-01
申请号：US3582756D
申请日：1970-02-12
Applicant: GEN ELECTRIC
Inventor： MCMURRAY WILLIAM
CPC classification number: H02M5/225
Abstract: A polyphase switching circuit employing bidirectional conducting solid state devices (such as series capacitor commutated inverseparallel connected SCRs) each in series with one winding of a single phase high frequency transformer are switched in sequence at a high switching rate as compared to the low frequency polyphase supply to time share the transformer link among the phases. On the secondary side of the transformer is a similar polyphase switching circuit or a single phase rectifier comprising switching devices in series with the other winding that are switched synchronously with those on the primary side. With the aid of output filter capacitance, the reformed output voltage is a polyphase voltage with the same low frequency or a unidirectional voltage of one or either polarity.
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Patent Agency Ranking
公开(公告)号：US3581212A
公开(公告)日：1971-05-25
申请号：US3581212D
申请日：1969-07-31
Applicant: GEN ELECTRIC
Inventor： MCMURRAY WILLIAM
Abstract: To obtain fast response to a cyclical AC or variable DC input reference signal by a stepped-wave power converter circuit comprising a plurality of equal or unequal inverter modules connected in series or parallel so that the module output voltages add algebraically, the composite instantaneous output stepped-wave voltage is compared with the instantaneous voltage values of the limits of a control band placed about the reference signal. One or more inverter modules are switched to produce a step change whenever the composite output voltage is outside the control band limits. An application is a fast response switching power amplifier for driving sonar transducers.
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公开(公告)号：US3517300A
公开(公告)日：1970-06-23
申请号：US3517300D
申请日：1968-04-16
Applicant: GEN ELECTRIC
Inventor： MCMURRAY WILLIAM
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公开(公告)号：US3678367A
公开(公告)日：1972-07-18
申请号：US14686371
申请日：1971-05-26
Applicant: GEN ELECTRIC
Inventor： MCMURRAY WILLIAM
CPC classification number: H02M5/225
Abstract: A power converter circuit with a high frequency transformer or capacitor link between input and output switching circuits is operated by a control computer to provide voltage, frequency, and phase conversion and regulation. Each switching circuit has a plurality of solid state switches establishing multiple circuit paths from the input to the output terminals through the single phase high frequency link by conduction of different combinations of switches. Selected combinations of switches are fired synchronously at a high frequency switching rate to generate a series of energy transfer pulses. The control computer operates immediately in advance of each energy transfer pulse to calculate the net effective error, according to a predetermined criterion, between the instantaneous predicted output voltage (or current) and the desired or reference output voltage for each possible combination of switches. The combination that produces the minimum net effective error is selected and fired next. Single phase AC, polyphase AC, and DC input and output switching circuit configurations can be combined as desired.
Abstract translation: 在输入和输出开关电路之间具有高频变压器或电容器连接的功率转换器电路由控制计算机操作以提供电压，频率和相位转换和调节。 每个开关电路具有多个固态开关，通过传导不同的开关组合，通过单相高频链路建立从输入端到输出端的多条电路路径。 选择的开关组合以高频切换速率同步发射以产生一系列能量传递脉冲。 控制计算机在每个能量传递脉冲之前立即操作，以根据预定标准计算每个可能的开关组合的瞬时预测输出电压（或电流）和期望或参考输出电压之间的净有效误差。 产生最小净有效误差的组合将被选中并触发。 可以根据需要组合单相交流，多相交流和直流输入和输出开关电路配置。
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8.发明授权Recovery system for short circuits through switching devices in power circuits 失效通过电源电路中的开关装置的短路恢复系统
公开(公告)号：US3569819A
公开(公告)日：1971-03-09
申请号：US3569819D
申请日：1969-01-16
Applicant: GEN ELECTRIC
Inventor： MARTZLOFF FRANCOIS D , MCMURRAY WILLIAM , WALDEN JOHN P
CPC classification number: H02M1/38
Abstract: When a short circuit or shoot-through occurs in a power circuit having two thyristors in series with commutating circuit inductors, a shunt capacitor isolated from the DC power supply by an impedance automatically resonates with the inductors to turn off both thyristors. A second automatic recovery system for repeated short circuits that occur before the capacitor has recharged operates to temporarily disable the power supply. In a high-voltage inverter the impedance is a resistor functioning to dampen voltage overshoots and to implement a relay or solid state second recovery system.
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公开(公告)号：US3487289A
公开(公告)日：1969-12-30
申请号：US3487289D
申请日：1968-04-16
Applicant: GEN ELECTRIC
Inventor： MCMURRAY WILLIAM
CPC classification number: H02M7/523 , H02M5/225 , H02M7/4807
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