Invertor with suppression of interference currents
    1.
    发明授权
    Invertor with suppression of interference currents 失效
    具有抑制干扰电流的反相器

    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。

    Device for compensating the DC offset of a converter using a controller
    2.
    发明授权
    Device for compensating the DC offset of a converter using a controller 失效
    用于使用控制器补偿转换器的直流偏移的装置

    公开(公告)号:US5870297A

    公开(公告)日:1999-02-09

    申请号:US939168

    申请日:1997-09-29

    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。

    Power breaker
    3.
    发明授权
    Power breaker 失效
    断路器

    公开(公告)号:US6052296A

    公开(公告)日:2000-04-18

    申请号:US921387

    申请日:1997-08-29

    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。

    Invertor with reduced common mode voltage
    4.
    发明授权
    Invertor with reduced common mode voltage 失效
    具有降低共模电压的变频器

    公开(公告)号:US5999428A

    公开(公告)日:1999-12-07

    申请号:US137746

    申请日:1998-08-21

    IPC分类号: H02M7/48 H02M7/49 H02M7/00

    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。

    Common turn-off circuit for a thyristor power converter
    5.
    发明授权
    Common turn-off circuit for a thyristor power converter 失效
    用于晶闸管功率转换器的公共关断电路

    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。

    METHOD FOR OPERATING A CONVERTER CIRCUIT AND APPARATUS FOR IMPLEMENTING THE METHOD
    6.
    发明申请
    METHOD FOR OPERATING A CONVERTER CIRCUIT AND APPARATUS FOR IMPLEMENTING THE METHOD 有权
    用于操作转换器电路的方法和用于实现方法的装置

    公开(公告)号:US20090257253A1

    公开(公告)日:2009-10-15

    申请号:US12406229

    申请日:2009-03-18

    IPC分类号: H02M1/00

    CPC分类号: H02M7/48

    摘要: The disclosure specifies a method for operating a converter circuit, the converter circuit having a converter unit with a large number of drivable power semiconductor switches and with a three-phase electrical AC voltage system, in which the drivable power semiconductor switches are driven by means of a drive signal (SA) formed from a control signal ((SR), and the control signal (SR) is formed by adjusting an H-th harmonic component of system currents (iNH) to a system current setpoint value (iNHref), where H=1, 2, 3, . . . . In order to reduce a harmonic component in the system voltages, the system current setpoint value (iNHref) is formed by adjusting an H-th harmonic component of system voltages (uNH) to a predeterminable system voltage setpoint value (uNHref), the control difference (uNHdiff) from the H-th harmonic component of the system voltages (uNH) and the system voltage setpoint value (uNHref) being weighted by a system impedance (yNH) determined with respect to the H-th harmonic component. In addition, an apparatus is disclosed for implementing the method.

    摘要翻译: 本公开内容规定了一种用于操作转换器电路的方法,该转换器电路具有具有大量可驱动功率半导体开关的转换器单元和三相电气交流电压系统,其中可驱动功率半导体开关通过 由控制信号((SR))形成的驱动信号(SA),并且通过将系统电流(iNH)的H次谐波分量调整到系统电流设定值(iNHref)来形成控制信号(SR),其中 H = 1,2,3,...为了降低系统电压中的谐波分量,系统电流设定值(iNHref)是通过将系统电压(uNH)的H次谐波分量调整为 可预测的系统电压设定值(uNHref),由系统电压(uNH)的H次谐波分量和系统电压设定点值(uNHref)的控制差(uNHdiff)由系统阻抗(yNH)加权, 对H伤害 onic成分。 此外,公开了一种用于实现该方法的装置。

    Method for operating a converter circuit and apparatus for implementing the method
    7.
    发明授权
    Method for operating a converter circuit and apparatus for implementing the method 有权
    用于操作转换器电路的方法和用于实现该方法的装置

    公开(公告)号:US08050060B2

    公开(公告)日:2011-11-01

    申请号:US12406229

    申请日:2009-03-18

    IPC分类号: H02J1/02 G05F1/70

    CPC分类号: H02M7/48

    摘要: The disclosure specifies a method for operating a converter circuit, the converter circuit having a converter unit with a large number of drivable power semiconductor switches and with a three-phase electrical AC voltage system, in which the drivable power semiconductor switches are driven by means of a drive signal (SA) formed from a control signal ((SR), and the control signal (SR) is formed by adjusting an H-th harmonic component of system currents (iNH) to a system current setpoint value (iNHref), where H=1, 2, 3, . . . . In order to reduce a harmonic component in the system voltages, the system current setpoint value (iNHref) is formed by adjusting an H-th harmonic component of system voltages (uNH) to a predeterminable system voltage setpoint value (uNHref), the control difference (uNHdiff) from the H-th harmonic component of the system voltages (uNH) and the system voltage setpoint value (uNHref) being weighted by a system impedance (yNH) determined with respect to the H-th harmonic component. In addition, an apparatus is disclosed for implementing the method.

    摘要翻译: 本公开内容规定了一种用于操作转换器电路的方法,该转换器电路具有具有大量可驱动功率半导体开关的转换器单元和三相电气交流电压系统,其中可驱动功率半导体开关通过 由控制信号((SR))形成的驱动信号(SA),并且通过将系统电流(iNH)的H次谐波分量调整到系统电流设定值(iNHref)来形成控制信号(SR),其中 H = 1,2,3,...为了降低系统电压中的谐波分量,系统电流设定值(iNHref)是通过将系统电压(uNH)的H次谐波分量调整为 可预测的系统电压设定值(uNHref),由系统电压(uNH)的H次谐波分量和系统电压设定点值(uNHref)的控制差(uNHdiff)由系统阻抗(yNH)加权, 对H伤害 onic成分。 此外,公开了一种用于实现该方法的装置。

    Invertor
    8.
    发明授权
    Invertor 失效
    逆变器

    公开(公告)号:US06169676A

    公开(公告)日:2001-01-02

    申请号:US09137539

    申请日:1998-08-21

    IPC分类号: H02M700

    CPC分类号: H02M7/49

    摘要: An invertor having a plurality of invertor bridges which operate in parallel and whose output voltages are summed. The invertor bridges are driven with pulse duration modulation according to an auxiliary control voltage. The auxiliary control voltages of the individual invertor bridges have a constant phase difference between one another. The output voltages of the bridges are summed by a center tap which is grounded by a ground connection. Effective suppression of the common-mode current distortion is achieved by having the switch arranged in the ground connection.

    摘要翻译: 具有多个并联运行并且其输出电压相加的逆变桥的逆变器。 根据辅助控制电压,脉冲宽度调制驱动逆变器桥。 各个逆变桥的辅助控制电压彼此之间具有恒定的相位差。 桥的输出电压由接地连接的中心抽头相加。 通过将开关布置在接地连接中来实现对共模电流失真的有效抑制。

    Method for operating a converter circuit, and apparatus for carrying out the method
    9.
    发明授权
    Method for operating a converter circuit, and apparatus for carrying out the method 失效
    用于操作转换器电路的方法,以及用于执行该方法的装置

    公开(公告)号:US08045347B2

    公开(公告)日:2011-10-25

    申请号:US12389744

    申请日:2009-02-20

    IPC分类号: H02M1/12

    CPC分类号: H02M7/53873

    摘要: A method for operating a converter circuit is disclosed. Such a converter circuit has a converter unit with a multiplicity of actuatable power semiconductor switches and is connected to a three-phase electrical AC mains system and in which the actuatable power semiconductor switches are actuated by means of an actuation signal (SA) formed from a control signal (SR), and the control signal (SR) is formed by adjusting an H-th harmonic component of system currents (iNH) to a system current setpoint value (iNHref), wherein H=1, 2, 3 . . . . For the purpose of reducing a harmonic component in the system voltages, the system current setpoint value (iNHref) is formed by adjusting the absolute value of an H-th harmonic component of the system voltages (uNH) to the absolute value of a prescribable system voltage setpoint value (uNHref). An exemplary apparatus carries out the method.

    摘要翻译: 公开了一种用于操作转换器电路的方法。 这种转换器电路具有具有多个可致动功率半导体开关的转换器单元,并连接到三相电AC电源系统,其中可致动功率半导体开关通过由 控制信号(SR)和控制信号(SR)通过将系统电流(iNH)的H次谐波分量调整到系统电流设定值(iNHref)而形成,其中H = 1,2,3。 。 。 。 为了降低系统电压中的谐波分量,系统电流设定值(iNHref)是通过将系统电压(uNH)的H次谐波分量的绝对值调整为规定系统的绝对值​​而形成的 电压设定点值(uNHref)。 示例性装置执行该方法。

    METHOD FOR OPERATING A CONVERTER CIRCUIT, AND APPARATUS FOR CARRYING OUT THE METHOD
    10.
    发明申请
    METHOD FOR OPERATING A CONVERTER CIRCUIT, AND APPARATUS FOR CARRYING OUT THE METHOD 失效
    用于操作转换器电路的方法,以及用于实施该方法的装置

    公开(公告)号:US20090212641A1

    公开(公告)日:2009-08-27

    申请号:US12389744

    申请日:2009-02-20

    IPC分类号: H02M1/12

    CPC分类号: H02M7/53873

    摘要: A method for operating a converter circuit is disclosed. Such a converter circuit has a converter unit with a multiplicity of actuatable power semiconductor switches and is connected to a three-phase electrical AC mains system and in which the actuatable power semiconductor switches are actuated by means of an actuation signal (SA) formed from a control signal (SR), and the control signal (SR) is formed by adjusting an H-th harmonic component of system currents (iNH) to a system current setpoint value (iNHref), wherein H=1, 2, 3 . . . . For the purpose of reducing a harmonic component in the system voltages, the system current setpoint value (iNHref) is formed by adjusting the absolute value of an H-th harmonic component of the system voltages (uNH) to the absolute value of a prescribable system voltage setpoint value (uNHref). An exemplary apparatus carries out the method.

    摘要翻译: 公开了一种用于操作转换器电路的方法。 这种转换器电路具有具有多个可致动功率半导体开关的转换器单元,并连接到三相电AC电源系统,其中可致动功率半导体开关通过由 控制信号(SR)和控制信号(SR)通过将系统电流(iNH)的H次谐波分量调整到系统电流设定值(iNHref)而形成,其中H = 1,2,3。 。 。 。 为了减少系统电压中的谐波分量,系统电流设定值(iNHref)是通过将系统电压(uNH)的H次谐波分量的绝对值调整为规定系统的绝对值​​而形成的 电压设定值(uNHref)。 示例性装置执行该方法。