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1.发明授权
公开(公告)号：US5870297A
公开(公告)日：1999-02-09
申请号：US939168
申请日：1997-09-29
申请人： Peter Dahler , Osvin Gaupp
发明人： Peter Dahler , Osvin Gaupp
IPC分类号： H02M7/48
CPC分类号： H02M7/48
摘要： A method and a device for correcting the DC offset of a converter are specified. The invention is defined in that the output voltage of the converter on the AC voltage side is fed to an essentially passive low-pass filter which reduces the output voltage to a level which can be processed electronically. Connected downstream of the low-pass filter is a controller which controls the DC offset essentially to zero by delaying the switching commands. The low-pass filter and the controller are arranged at a high-voltage potential.
摘要翻译： 指定用于校正转换器的DC偏移的方法和装置。 本发明的定义在于，AC电压侧的转换器的输出电压被馈送到基本上被动的低通滤波器，其将输出电压降低到可以被电子处理的水平。 连接在低通滤波器的下游是通过延迟开关命令将DC偏移基本上控制为零的控制器。 低通滤波器和控制器布置在高电压电位。
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公开(公告)号：US5999427A
公开(公告)日：1999-12-07
申请号：US116936
申请日：1998-07-17
CPC分类号： H02M7/49
摘要： An invertor (15) includes a plurality of invertor bridges (B1, . . . ,B8), which are connected in parallel and whose output voltages are summed via a transformer (19). The transformer (19) has a number of primary windings (P1, . . . ,P8) and associated secondary windings (S1, . . . ,S8) which corresponds to the number of invertor bridges (B1, . . . ,B8). Each invertor bridge (B1, . . . ,B8) is connected on the output side to one of the primary windings (P1, . . . ,P8), and the secondary windings (S1, . . . ,S8) are connected in series to sum the output voltages. The transformer (19) has a center tap (23) which is grounded via a ground connection (24). Tertiary windings (T1, . . . ,T8) are assigned to the primary windings (P1, . . . ,P8) and to the secondary windings (S1, . . . ,S8). The tertiary windings (T1, . . . ,T8) are also connected to a common-mode filter (51). The common-mode filter (51) is tuned to common mode interference voltages associated with in-phase or common-mode interference currents flowing via the ground connection (24). Thus, a circuit is formed that attenuates or suppresses the in-phase or common-mode interference currents and the associated interference voltages.
摘要翻译： 逆变器（15）包括并联连接的多个逆变桥（B1 ...，B8），其输出电压通过变压器（19）相加。 变压器（19）具有多个对应于逆变桥（B1，...，B8）的数量的初级绕组（P1，...，P8）和相关联的次级绕组（S1，...，S8） 。 每个逆变桥（B1，...，B8）在输出侧连接到一个初级绕组（P1，...，P8），次级绕组（S1，...，S8）连接 系列对输出电压求和。 变压器（19）具有通过接地连接（24）接地的中心抽头（23）。 三次绕组（T1，...，T8）分配给初级绕组（P1，...，P8）和次级绕组（S1，...，S8）。 三级绕组（T1，...，T8）也连接到共模滤波器（51）。 共模滤波器（51）被调谐到与通过接地连接（24）流动的同相或共模干扰电流相关联的共模干扰电压。 因此，形成了衰减或抑制同相或共模干扰电流和相关联的干扰电压的电路。
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公开(公告)号：US5926382A
公开(公告)日：1999-07-20
申请号：US965863
申请日：1997-11-07
申请人： Peter Dahler
发明人： Peter Dahler
摘要： A power electronic circuit arrangement is specified, having a first power converter, which is connected to a first supply system, and a second power converter, which is connected to a second supply system. The first and second power converters are connected via a voltage intermediate circuit. According to the invention, a further filter is provided in addition to the so-called 33 Hz filter (supply-system filter) in the voltage intermediate circuit, which further filter serves to suppress the undesirable in-antiphase and in-phase current components flowing in the intermediate circuit. The additional filter can be realized either in split fashion, i.e. with two subfilters, in each case one for the in-antiphase current components and one for the in-phase current components, or in combined fashion with a common filter for both current components. The further filter, in combined or split fashion, fundamentally has a structure with a series circuit formed by a filter capacitor and a filter inductor, a filter resistor being connected in parallel with the filter inductor.
摘要翻译： 规定了具有连接到第一供电系统的第一功率转换器和连接到第二供电系统的第二功率转换器的电力电子电路装置。 第一和第二电力变换器通过电压中间电路连接。 根据本发明，除了电压中间电路中的所谓的33Hz滤波器（供电系统滤波器）之外，还提供另外的滤波器，该滤波器用于抑制不期望的反相和同相电流分量流动 在中间电路中。 附加滤波器可以以分离的方式实现，即在两种子滤波器中，在每种情况下，一个用于反相电流分量，一个用于同相电流分量，或者与用于两个电流分量的公共滤波器组合使用。 组合或分离方式的另外的滤波器基本上具有由滤波电容器和滤波电感器形成的串联电路的结构，滤波电阻器与滤波电感器并联连接。
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公开(公告)号：US4639846A
公开(公告)日：1987-01-27
申请号：US830721
申请日：1986-02-19
申请人： Peter Dahler , Peter Neidhart , Kadry Sadek , Herbert Stemmler
发明人： Peter Dahler , Peter Neidhart , Kadry Sadek , Herbert Stemmler
CPC分类号： H02J3/36 , H02M7/7575 , H02J2003/365 , Y02E60/60
摘要： To reduce unwanted current oscillations such as, for example, of the second harmonic of the system frequency (f.sub.o), the firing angles (.alpha.1, .alpha.2) of a link-circuit rectifier (1) and of a link-circuit inverter (2) are compensatingly acted on in push-pull mode. For this purpose, a direct-current link-circuit current signal (S5, S5'), which contains the instability or the current oscillation to be compensated, is fed by means of a current detector (5, 5') to a bandpass filter (16, 16', 16") which is tuned to the frequency (f.sub.o, f.sub.x) of the respective current oscillation. The phase of a bandpass filter output signal (S16) is shifted by 90.degree. trailing in a 90.degree. phase-shifting section (15, 15', 15"). A compensating signal (S15,S15', S15") obtained in this manner is fed to first and second function generators (13, 13', 13"; 14, 14', 14"). The first function generators allow the positive component (S13) to pass and the second function generators allow the negative component (S14) of the compensating signal to pass. The output signal of the first function generator passes via a switch (12') to a summing section (11') for forming the cosine of the firing angle (.alpha.2) of the link-circuit inverter (2). The output signal of the second function generator passes via a switch (12) to a summing section (11) for forming the cosine of the firing angle (.alpha.1) of the link-circuit rectifier (1). By these means, the firing angle (.alpha.2) of the link-circuit inverter (2) is reduced when the direct-current link-circuit current signal is dropping and the firing angle (.alpha.1) of the link-circuit rectifier (1) is increased when it is rising.
摘要翻译： 为了减少不必要的电流振荡，例如系统频率（fo）的二次谐波，链路电路整流器（1）和链路电路逆变器（1）的触发角（α1，α2） 2）在推挽模式下被补偿地作用。 为此，包含不稳定性或待补偿的当前振荡的直流链路电路信号（S5，S5'）通过电流检测器（5,5'）馈送到带通滤波器 （16,16'，16“），其被调谐到各个电流振荡的频率（fo，fx）。 带通滤波器输出信号（S16）的相位在90°相移部分（15,15'，15“）内移动90°。 以这种方式获得的补偿信号（S15，S15'，S15“）被馈送到第一和第二功能发生器（13,13'，13”; 14,14'，14“）。 第一函数发生器允许正分量（S13）通过，第二函数发生器允许补偿信号的负分量（S14）通过。 第一函数发生器的输出信号通过开关（12'）通过求和部分（11'），用于形成链路电路逆变器（2）的触发角（α2）的余弦。 第二函数发生器的输出信号通过开关（12）通过求和部分（11），以形成连接电路整流器（1）的触发角（α1）的余弦。 通过这些方式，当直流链路电路电流信号下降时，链路电路逆变器（2）的触发角（α2）减小，并且链路电路整流器（1）的触发角（α1） ）在上升时增加。
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公开(公告)号：US6052296A
公开(公告)日：2000-04-18
申请号：US921387
申请日：1997-08-29
申请人： Peter Dahler , Osvin Gaupp , Horst Gruning
发明人： Peter Dahler , Osvin Gaupp , Horst Gruning
CPC分类号： H02M7/49
摘要： A power converter circuit arrangement which comprises a first power converter and at least one further power converter is specified. The power converters are connected to the DC voltage intermediate circuit and feed a load circuit, in particular a single-phase railway grid. The or each further power converter has an output transformer on the load side. The secondary windings of the output transformers are connected in series with the primary winding of a load transformer, which feeds the load circuit, and the load-side terminals of a first power converter. This permits the turns ratios of the output transformers to be selected to be greater than or equal to one and said turns ratios between said output transformers to be selected to be gradated in a binary or ternary manner, for example. As a result, power converter stages having a gradated output voltage are available, and a finely stepped approximation to a sinusoidal output voltage can be achieved without the necessity of providing an uneconomically large number of stages.
摘要翻译： 规定了包括第一功率转换器和至少一个另外的功率转换器的功率转换器电路装置。 电力转换器连接到直流电压中间电路，并馈送负载电路，特别是单相铁路电网。 该或每个其他功率转换器在负载侧具有输出变压器。 输出变压器的次级绕组与负载变压器的初级绕组串联，负载变压器的负载电路和第一功率转换器的负载侧端子。 这允许输出变压器的匝数比被选择为大于或等于1，并且所述输出变压器之间的所述匝数比被选择为以二进制或三元方式分级。 结果，可以获得具有等级输出电压的功率转换器级，并且可以实现对正弦输出电压的精细级近似，而不需要提供不经济的大量级。
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公开(公告)号：US5999428A
公开(公告)日：1999-12-07
申请号：US137746
申请日：1998-08-21
CPC分类号： H02M7/49 , Y10T307/713
摘要： An inverter having a plurality of inverter bridges which operate in parallel and whose output voltage is summed by way of a transformer. The transformer has a number of primary windings and associated secondary windings which correspond to the number of inverter bridges. Each inverter bridge is connected on the output side to a primary winding. The secondary windings are connected in series to sum the output voltages. The transformer has a center tap which is grounded by a ground connection. The suppression of in-phase or common-mode interference currents flowing by the ground connection and the interference voltages associated therewith is achieved by dividing the secondary windings into a first and second identical partial secondary winding. The partial secondary windings are connected to one another in the center tap in such a way that the common-mode currents and voltages induced in the partial secondary windings mutually cancel.
摘要翻译： 一种逆变器，具有并联运行的多个逆变桥，其输出电压通过变压器相加。 变压器具有多个初级绕组和相应的次级绕组，其对应于逆变桥的数量。 每个逆变桥在输出侧连接到初级绕组。 次级绕组串联连接以求输出电压。 变压器具有通过接地连接接地的中心抽头。 通过将次级绕组分成第一和第二相同的部分次级绕组来实现由接地连接流过的同相或共模干扰电流的抑制和与之相关的干扰电压。 部分次级绕组在中心抽头中彼此连接，使得部分次级绕组中感应的共模电流和电压相互抵消。
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公开(公告)号：US5793622A
公开(公告)日：1998-08-11
申请号：US738286
申请日：1996-10-25
CPC分类号： H02M7/155 , Y10T307/492
摘要： A common turn-off circuit for a thyristor power converter is specified. The common turn-off circuit is particularly suitable for AC converters such as, for example, railway grid couplings. The turn-off thyristors are directly connected to the secondary transformer windings. Additionally provided is a special freewheeling path via which the energy stored, in particular, in the transformer inductors or other relevant inductors can be drawn away. What is advantageous is the fact that all of the thyristors of the power converter can be turned off reliably and without any special precautions, since the common turn-off circuit is automatically ready for turning off. Overvoltages are avoided, moreover, by the special freewheeling path.
摘要翻译： 规定了晶闸管功率转换器的公共关断电路。 公共关断电路特别适用于诸如铁路电网耦合的AC转换器。 关断晶闸管直接连接到次级变压器绕组。 另外提供了一种特殊的续流路径，通过该路径可以将存储的能量，特别是变压器电感器或其它相关电感器中的能量吸走。 有利的是，由于公共关断电路自动准备好关闭，电源转换器的所有晶闸管都可以可靠地关闭而没有任何特别的预防措施。 此外，通过特殊的续流路径可以避免过电压。
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公开(公告)号：US5204548A
公开(公告)日：1993-04-20
申请号：US682237
申请日：1991-04-09
申请人： Peter Dahler , Michael Hausler
发明人： Peter Dahler , Michael Hausler
CPC分类号： H01F6/008 , H02M3/142 , Y10T307/625
摘要： A two-quadrant converter having a connected superconducting magnetic memory used as a chopper circuit or an actuator for stabilizing networks and for short-term bridging of power failures (e.g., uninterrupted power supply). For example, a two-quadrant converter is connected on the input side to an intermediate d.c. circuit of a converter whose intermediate circuit voltage is stabilized by an indirect capacitor. A magnetic memory is charged and discharged, respectively with energy in cyclic intervals, i.e. in conjunction with interposed free-wheeling intervals. Charging takes place via triggered thyristors, discharging via conducting diodes, with blocked thyristors. When the magnetic memory is in a charged state and is to be neither charged nor discharged over lengthy intervals, its current can be conducted in the free wheel via a closed mechanical switch connected in parallel.
摘要翻译： 二象限转换器具有用作斩波电路的连接的超导磁存储器或用于稳定网络和用于电力故障（例如不间断电源）的短期桥接的致动器。 例如，两象限转换器在输入侧连接到中间直流电。 其中间电路电压由间接电容器稳定的转换器的电路。 磁存储器分别以循环间隔的能量，即与插入的续流间隔一起进行充放电。 通过触发晶闸管进行充电，通过导通二极管放电，封闭晶闸管。 当磁存储器处于充电状态并且不会长时间地充电或放电时，其电流可以通过并联连接的闭合机械开关在自由轮中传导。
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