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1.发明授权
公开(公告)号：US3668413A
公开(公告)日：1972-06-06
申请号：US3668413D
申请日：1970-05-11
CPC分类号： H02J3/36 , Y02E60/60 , Y10T307/367
摘要： The invention in this application relates to a control system for controlling the power or current in an H.V.D.C. link connected between two a.c. systems and is employed particularly to damp power oscillations developed in such systems which frequently occur after any large disturbances, such as a temporary line short circuit. In particular, the system includes apparatus for defining an output signal proportional to a change function of absolute phase angle phi of the alternating voltage in at least one of the a.c. systems, and a control circuit for controlling the converters in the d.c. link. The control circuit is responsive to a signal depending on both the output signal from the apparatus and a predetermined order signal whereby the d.c. link is controlled to have a component of variation proportional to the said change function.
摘要翻译： 本申请的发明涉及一种用于控制H.V.D.C.中的功率或电流的控制系统。 链路连接在两个a.c. 系统，并且被特别用于衰减在诸如临时线路短路的任何大的干扰之后经常发生的这种系统中产生的功率振荡。 特别地，该系统包括用于定义与交流电压的绝对相位角度phi的变化函数成比例的输出信号的装置。 系统和用于控制直流电路中的转换器的控制电路。 链接。 控制电路根据来自装置的输出信号和预定的顺序信号对信号进行响应，由此直流。 链路被控制成具有与所述改变功能成比例的变化的分量。
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2.发明授权Static convertor control systems in which maximum negative rate-of-change of firing angle is limited 失效静态转换器控制系统，其中最大的无效变化角度有限公司
公开(公告)号：US3467848A
公开(公告)日：1969-09-16
申请号：US64367367
申请日：1967-06-05
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公开(公告)号：US3475702A
公开(公告)日：1969-10-28
申请号：US3475702D
申请日：1966-02-01
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5.发明授权Circuit for controlling the application of firing pulses to controlled devices in a static converter operating in the inversion mode 失效用于控制在逆变器模式下操作的静态转换器中的控制设备的火箭应用的电路
公开(公告)号：US3458795A
公开(公告)日：1969-07-29
申请号：US63639667
申请日：1967-05-05
摘要： A circuit for controlling the application of firing pulses to controlled devices, e.g. thyristors or mercury valves, in a static convertor operating in its inversion mode. In particular, it comprises control means for developing the firing pulses 'at. an instant corresponding to a predetermined position occupied by each cycle of a waveform derived from a combination of components which are functions of the direct current flowing in the D.C. side of the "invertor" at a time instant immediately preceding the firing instant and the voltage across the device at the said time instant. The circuit is inherently predictive in its action and the object fulfilled by this invention is to so control the firing instants that the margin angle (defined herein) is maintained substantially constant even under conditions of asymmetry.
摘要翻译： 用于控制点火脉冲施加到受控设备的电路，例如 在其反转模式下工作的静态转换器中的晶闸管或汞阀。 特别地，它包括用于显影发射脉冲的控制装置。 对应于从紧接在触发时刻之前的时刻的“逆变器”的直流侧的直流电的功能的组件的组合导出的波形的每个周期占据的预定位置的瞬间和跨越 该装置在所述时刻。 该电路在其作用中是固有地预测性的，并且本发明实现的目的是为了控制发射时刻，即使在不对称的条件下，边缘角度（本文定义）也保持基本恒定。
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公开(公告)号：US3644820A
公开(公告)日：1972-02-22
申请号：US3644820D
申请日：1970-05-11
CPC分类号： H02J3/36 , H02M7/7575 , Y02E60/60
摘要： In the transmission of direct current from a rectifier to an inverter one method of control has been to provide a constant current at the rectifier and a constant extinction angle at the inverter controlled by a fixed extinction angle order signal. Instability results with this form of control under certain operating conditions. In the present invention the tendency to instability is reduced by controlling the extinction angle of the inverter in accordance with the fixed order signal when the inverter output current is at least equal to a required level, but increasing the extinction angle when the inverter current is less than the required level. The extinction angle is increased under the control of an auxiliary order signal generated by a summing unit which sums a signal from a control circuit representing the actual extinction angle, the fixed order signal, and a signal from an amplifier dependent on the difference between the actual and required current levels.
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公开(公告)号：US3466525A
公开(公告)日：1969-09-09
申请号：US63639867
申请日：1967-05-05
CPC分类号： H02M7/151
摘要： A circuit for controlling the application of firing pulses to a controlled device in a static converter employed for example, in H.V.D.C. schemes. The circuit comprises an oscillator for developing these pulses and having an output frequency dependent on an input signal which is a function of any difference between the actual and desired values of a selected quantity possesed by the A.C. or the D.C. system whereby to influence the pulse frequency and control the firing angle "alpha" of the controlled devices in such a sense as to reduce the difference towards zero.
摘要翻译： 用于控制在例如H.V.D.C.中使用的静态转换器中的控制装置施加点火脉冲的电路。 方案。 电路包括用于显影这些脉冲并具有取决于输入信号的输出频率的振荡器，该输入信号是由AC或DC系统所拥有的所选量的实际值和期望值之间的任何差异的函数，从而影响脉冲频率 并且以这样的意义来控制受控装置的触发角“α”，以将差减小到零。
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公开(公告)号：US3626369A
公开(公告)日：1971-12-07
申请号：US3626369D
申请日：1970-06-23
CPC分类号： G08C25/02 , H02J13/0096
摘要： A control system for first and second converters in a highvoltage DC transmission link includes first and second control units which supply control signals I'' and I'''', respectively, to the converters. The first control unit receives a main control signal I and periodically generates a coded control signal which is transmitted via a link to the second control unit. If this coded signal is error-free, a check signal is transmitted back to the first control unit via a link and the signal I'''' is updated. The signal I'' is also updated if the check signal is received by the first control unit or if the main control signal is less than the signal I'' when the first converter is operating as an inverter or greater than I'' when the first converter is operating as a rectifier.
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9.发明授权Apparatus for deriving a signal proportional to a change-function of phase angle 失效用于获取相位变化函数的信号的装置
公开(公告)号：US3611040A
公开(公告)日：1971-10-05
申请号：US3611040D
申请日：1970-04-27
CPC分类号： G05B11/12
摘要： Apparatus for deriving an output signal proportional to a particular change-function of absolute phase angle of an alternating input signal comprises a phase comparator which generates the output signal as a result of comparison of the phase angle of the input signal with the phase angle of a signal from an oscillator. The phase angle of the oscillator output is controlled by a signal derived from an operational amplifier in response to the output signal.
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公开(公告)号：US3470442A
公开(公告)日：1969-09-30
申请号：US3470442D
申请日：1967-07-03
CPC分类号： H02M7/7575 , H02J3/36 , Y02E60/60
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