-
公开(公告)号：US5148362A
公开(公告)日：1992-09-15
申请号：US742293
申请日：1991-08-08
申请人： Rudiger Braun , Wilhelm Forstbauer
发明人： Rudiger Braun , Wilhelm Forstbauer
摘要： A method and a device balance a three-phase system (18) formed by means of an invertor (12) from a dc voltage source (10), the output (R', S', T') of said invertor (12) being provided with a filter (14) followed by a neutral grounding transformer (16). Positive and negative phase-sequence system components (u.sub.1s, u .sub.1c, u.sub.2c, u.sub.2s) are formed from the measured voltages (u.sub.R, u.sub.S, u.sub.T). These measured voltages (u.sub.R, u.sub.S, u.sub.T) form positive and negative phase-sequence system manipulated variables (U.sub.St.phi., U.sub.St1c, U.sub.St2c, U.sub.St2s). The positive and negative phase-sequence system manipulated variables (U.sub.St1c, U.sub.St2s, U.sub.St2c) are transformed by means of a transformation device (50) into phase-to-neutral voltage manipulated variable (U.sub.Str, U.sub.Sts, U.sub.Stt) and routed to angularly symmetrical drive units 76, 78, 80). A three-phase system (18) formed can thus be kept balanced, with means of the multivariable control systems, even with an unbalanced load.
摘要翻译： 一种方法和装置平衡通过来自直流电压源（10）的反相器（12）形成的三相系统（18），所述逆变器（12）的输出（R'，S'，T'）， 设置有过滤器（14），随后是中性接地变压器（16）。 根据测量电压（uR，uS，uT）形成正和负相序系统组件（＆upbar＆u1s，＆upbar＆u 1c，＆upbar＆u2c，＆upbar＆u2s）。 这些测量电压（uR，uS，uT）形成正和负相序系统操纵变量（USt phi，USt1c，USt2c，USt2s）。 通过变换装置（50）将正和负相序系统操纵变量（USt1c，USt2s，USt2c）变换为相到中性电压操纵变量（UStr，USts，UStt），并被路由到角对称驱动 单位76,78,80）。 因此，形成的三相系统（18）可以通过多变量控制系统的方式保持平衡，即使是负载不平衡。
-
公开(公告)号：US5148361A
公开(公告)日：1992-09-15
申请号：US742026
申请日：1991-08-08
申请人： Rudiger Braun , Wilhelm Forstbauer
发明人： Rudiger Braun , Wilhelm Forstbauer
摘要： A method and a device balance a three-phase system (18) that is produced by means of an invertor (12) from a d.c. voltage source (10), such that the output (R',S',T') of this invertor (12) is equipped with a filter (14) to which a neutral grounding transformer (16) has been added. In keeping with the invention, absolute values (u.sub.R.sup.*, u.sub.S.sup.*, u.sub.T.sup.*), each of which is fed into a regulator device (34, 42; 36, 44; 38, 46) are formed from measured phase-to-phase voltages (u.sub.RL, u.sub.SL, u.sub.TL). Each absolute value produces a phase-to-phase voltage manipulated variable (U.sub.StR, U.sub.StS, U.sub.StT) such that by means of a transformer device (54), these phase-to-phase voltage manipulated variables (U.sub.StR, U.sub.StS, U.sub.StT) are transformed into phase-to-neutral manipulated variables (U.sub.Str, U.sub.Sts, U.sub.Stt) and are fed into angularly symmetrical control units (96, 98, 100). In this way, using a simple mono-phase control of absolute values, a three-phase system (18) with an asymmetrical load can remain symmetrical and, while retaining the symmetry of angle, the absolute values of the invertor (12) are controlled in an asymmetrical fashion.
摘要翻译： 一种方法和装置平衡通过来自直流电源的逆变器（12）产生的三相系统（18）。 电压源（10），使得该逆变器（12）的输出（R'，S'，T'）配备有已经添加了中性接地变压器（16）的滤波器（14）。 根据本发明，将每个被馈送到调节器装置（34,42; 36,44; 38,46）中的绝对值（ûR*，ûS*，ûT*）由测量的相间 电压（uRL，uSL，uTL）。 每个绝对值产生相间电压操纵变量（UStR，UStS，UStT），使得借助于变压器装置（54），将这些相间电压操纵变量（UStR，UStS，UStT）变换 进入相位到中性的操纵变量（UStr，USts，UStt），并被馈送到角度对称的控制单元（96,98,100）。 以这种方式，使用绝对值的简单单相控制，具有不对称负载的三相系统（18）可以保持对称，并且在保持角度对称的同时，控制逆变器（12）的绝对值 以不对称的方式。
-
公开(公告)号：US4367522A
公开(公告)日：1983-01-04
申请号：US245592
申请日：1981-03-19
CPC分类号： H02M1/084
摘要： An inverter arrangement for generating a three-phase AC output voltage is provided with three pulse-controlled, free-running single-phase inverters. The inverters are connected at their inputs to a DC voltage source, and at their outputs to respective low-pass filters. The low-pass filters are connected to corresponding single-phase transformers, each having an output winding. The output windings of the single-phase transformers are connected to one another in a Y-circuit configuration to produce the output AC voltages, having a grounded neutral terminal. Each of the single-phase inverters is controlled by an associated pulse control device which contains a vector-oriented control device and a control unit. A vector oscillator generates signals corresponding to a symmetrical three-phase system of reference vectors for the vector-oriented control devices.
摘要翻译： 用于产生三相AC输出电压的逆变器装置设置有三个脉冲控制的自由运行的单相逆变器。 逆变器在其输入端连接到直流电压源，并在其输出端连接到相应的低通滤波器。 低通滤波器连接到相应的单相变压器，每个具有输出绕组。 单相变压器的输出绕组以Y电路配置彼此连接，以产生具有接地中性点的输出AC电压。 每个单相逆变器由包含向量控制装置和控制单元的相关联的脉冲控制装置控制。 矢量振荡器产生对应于用于向量控制装置的参考矢量的对称三相系统的信号。
-
4.发明授权Apparatus for generating a symmetrical three-phase voltage system with a neutral wire capable of carrying current 失效用于产生具有能够承载电流的中性线的对称三相电压系统的装置
公开(公告)号：US4719557A
公开(公告)日：1988-01-12
申请号：US862755
申请日：1986-05-13
申请人： Wilhelm Forstbauer , Albert Muller
发明人： Wilhelm Forstbauer , Albert Muller
摘要： A device which generates a symmetrical output voltage system at the output of a transformer with a neutral point which can carry current on the secondary side or a Y-point former, even if the load is asymmetrical, each primary terminal being fed from a pair of bridge arms of a pulsed inverter. The device further comprises a decoupling network in which the conductor voltages measured on the secondary side are converted into substitute actual values according to the structure of the transformer circuit, which actual values represent symmetrical output voltages or a likewise symmetrical system with a free Y-point. These substitute actual values are controlled to form a system of symmetrical reference values.
摘要翻译： 在具有中性点的变压器的输出处产生对称的输出电压系统的装置，即使负载是非对称的，即使负载是不对称的，每个主端子从一对 脉冲逆变器的桥臂。 该装置还包括去耦网络，其中根据变压器电路的结构将次级侧上测量的导体电压转换为替代实际值，该实际值表示对称的输出电压或具有自由Y点的同样对称的系统 。 这些替代实际值被控制以形成对称参考值的系统。
-
公开(公告)号：US4063143A
公开(公告)日：1977-12-13
申请号：US612455
申请日：1975-09-11
申请人： Wilhelm Forstbauer
发明人： Wilhelm Forstbauer
摘要： An inverter arrangement comprising two controlled three-phase inverters is disclosed. The inputs of these inverters are preferably connected to a common DC voltage source, while the output voltages delivered by the inverters are of rectangular waveshape and are added together by means of transformers to form resultant output voltages. In accord with the invention, in order to obtain resultant output voltages whose harmonics are of orders which do not change when voltage control is applied, all the output inverter voltages are caused to comprise in each period a positive and a negative voltage pulse, each of which pulses has breaks or no-voltage intervals of controllable width positioned at predefined places within the pulse.
摘要翻译： 公开了一种包括两个受控三相逆变器的逆变器装置。 这些反相器的输入优选地连接到公共DC电压源，而由逆变器输出的输出电压是矩形波形，并且通过变压器相加在一起以形成合成的输出电压。 根据本发明，为了获得在施加电压控制时谐波为顺序不变的结果输出电压，所有输出的反相器电压都在每个周期内包括一个正和负的电压脉冲， 哪个脉冲具有位于脉冲内的预定义位置处的可控宽度的中断或无电压间隔。
-
-
-
-
搜索结果
5 条记录 (耗时 0.015 秒)