公开(公告)号：US4639662A

公开(公告)日：1987-01-27

申请号：US639000

申请日：1984-08-09

Applicant: Georg Mastner

Inventor： Georg Mastner

IPC: G05F1/30 ,  H02M7/17 ,  G05F1/32

CPC classification number: H02M7/17 ,  G05F1/30

Abstract: A thyristor circuit including a primary winding and at least one secondary winding and first and second bipolar thyristor switches connected across respective connections of the secondary winding. The first bipolar thyristor switch bridges N.sub.1 turns of the secondary winding, while the second bipolar thyristor switch bridges N.sub.2 turns of the secondary winding, wherein N.sub.2 is less than N.sub.1. The product between the maximum forward current of the second bipolar switch and the number of turns N.sub.2 is greater than the product between the latching current of the first bipolar thyristor switch and the number of turns N.sub.1 thereof. The second bipolar thyristor switch thus makes it possible to short-circuit the portion of the secondary winding bridged thereby, for operation as a switchable choke, e.g. in a reactive compensator, or as a variable power supply when supplemented by additional components. The second bipolar thyristor switch which bridges a smaller number of windings than the first bipolar thyristor switch expands the operational range of the thyristor circuit and finds particular utility in providing a regulated d.c. power supply.

Abstract translation: 一种晶闸管电路，包括初级绕组和至少一个次级绕组以及连接在次级绕组的相应连接上的第一和第二双极晶闸管开关。 第一个双极晶闸管开关桥接N1绕组次级绕组，而第二个双极晶闸管开关桥接次级绕组N2圈，其中N2小于N1。 第二双极性开关的最大正向电流与匝数N2之间的乘积大于第一双极晶闸管开关的锁存电流与其匝数N1之间的乘积。 因此，第二双极晶闸管开关使得可能使由此桥接的次级绕组的部分短路，以用作可切换的扼流圈，例如， 在无功补偿器中，或作为可变电源供应，在补充附加组件时。 桥接比第一个双极晶闸管开关更少数量的绕组的第二个双极晶闸管开关扩大了晶闸管电路的工作范围，并且在提供一个调节的直流电流方面具有特殊的用途。 电源。

公开(公告)号：US4628430A

公开(公告)日：1986-12-09

申请号：US582484

申请日：1984-02-22

Applicant: Georg Mastner

Inventor： Georg Mastner

IPC: H02M1/00 ,  H02M1/36 ,  H02M3/155 ,  H02M3/337 ,  G05F1/56

CPC classification number: H02M1/36 ,  H02M3/155 ,  H02M3/3378

Abstract: The voltage present at an input is chopped by a switch which is actuated by a pulse-width modulator controlled by the output voltage and is smoothed at least by a low-pass filter, consisting of an inductance and a capacitance, at the output. In order to reduce to a minimum the delay between the time an input voltage is applied and the time a rated value is at least approximately reached by the output voltage, the inductance is bypassed by a bypassing circuit which has a low inductance and which conducts if the output voltage is below a minimum voltage and in other cases is turned off. It contains, for example, a switch which is constructed as a switchable current source and which is actuated by a comparator comparing the output voltage with a reference voltage. In transformer-coupled embodiments, isolation between the output and the input is possible. The supply unit is suited, for example for supplying auxiliary devices of an instrument transformer from the current of the power-line to be monitored.

Abstract translation: 存在于输入端的电压被开关切断，该开关由由输出电压控制的脉冲宽度调制器驱动，并且在输出端至少由包括电感和电容的低通滤波器平滑化。 为了减少施加输入电压的时间与输出电压至少大约达到额定值的时间之间的延迟，电感被绕组电路旁路，该旁路电路具有低电感，并且如果 输出电压低于最小电压，其他情况下关闭。 它包含例如被构造为可切换电流源并由比较输出电压与参考电压的比较器驱动的开关。 在变压器耦合的实施例中，输出和输入之间的隔离是可能的。 供电单元适用于例如从被监测电力线的电流供应仪表变压器的辅助装置。

公开(公告)号：US4591783A

公开(公告)日：1986-05-27

申请号：US539076

申请日：1983-10-04

Applicant: Georg Mastner

Inventor： Georg Mastner

IPC: G01R15/06 ,  G01R15/16 ,  H01G4/40 ,  H01G1/005

CPC classification number: G01R15/16 ,  H01G4/40

Abstract: In this voltage transformer for compressed-gas insulated high-voltage systems, between a straight internal conductor (1), which is located in a gas space (4) and forms a high-voltage electrode, and a low-voltage electrode (3) surrounding the internal conductor in the gas space (4) a measuring electrode (5) is arranged at which an output voltage is tapped off and fed to a signal processing system (6). In order to reduce the dependence of the output voltage on tolerances and fluctuations of geometric parameters, a guard electrode (7) is arranged between the low-voltage electrode (3) and the measuring electrode (5) and a plate capacitor (11), which is located in insulating gas, is placed between the measuring electrode (5) and earth. Between the guard electrode (7) and earth a supplementary capacitor (13) is also placed which is dimensioned in such a way that the capacitive voltage dividers formed by the internal conductor (1), the measuring electrode (5) and earth, on the one hand, and the internal conductor (1) the guard electrode (7) and earth, on the other hand, have approximately the same transformation ratios. The guard electrode (7) is earthed via a compensating device (14) the impedance of which is dimensioned in such a way that the time constants for the discharges of the measuring electrode 5 and the guard electrode 7 are approximately equal.

Abstract translation: 在用于压缩气体绝缘高压系统的这种变压器中，位于气体空间（4）中并形成高压电极的直内部导体（1）和低压电极（3）之间， 围绕气体空间（4）中的内部导体，布置测量电极（5），在该测量电极处输出电压被分接并馈送到信号处理系统（6）。 为了减小输出电压对公差和几何参数波动的依赖性，在低电压电极（3）和测量电极（5）之间设置有保护电极（7）和平板电容器（11）， 其位于绝缘气体中，放置在测量电极（5）和地球之间。 在保护电极（7）和接地之间还放置辅助电容器（13），其尺寸使得内部导体（1），测量电极（5）和地球形成的电容分压器的尺寸 另一方面，内部导体（1），保护电极（7）和地球具有大致相同的变换比。 保护电极（7）经由补偿装置（14）接地，该补偿装置（14）的阻抗尺寸设计成使得测量电极5和保护电极7的放电的时间常数近似相等。