CONTROL METHOD AND SYSTEM FOR DC/AC CONVERTERS

    公开(公告)号:EP4362316A1

    公开(公告)日:2024-05-01

    申请号:EP21801579.0

    申请日:2021-06-22

    IPC分类号: H02M7/5387

    CPC分类号: H02M7/53875

    摘要: Control method for an electronic DC/AC converter (1), wherein for at least one phase: calculating a first reference voltage (er,v, es,v, et,v) from predefined voltage setpoints (22) and a phase voltage (Vcr, Vcs, Vct); calculating a second reference voltage ( er,ipos,es,ipos,et,ipos) based on a difference between a predefined upper current limit (Imax) and the current (ir, is, it) of said at least one phase, and on the phase voltage ; calculating a third reference voltage ( er,ineg,es,ineg,et,ineg) based on a difference between a predefined lower current limit (-Imax) and the current of said at least one phase, and on the phase voltage; comparing the first reference voltage (er,v, es,v, et,v) with the second reference voltage ( er,ipos,es,ipos,et,ipos); selecting the lowest voltage of the two; comparing the selected reference voltage with the third reference voltage ( er,ineg,es,ineg,et,ineg) selecting as the control voltage (er,s, es,s, et,s) the highest of the two; and applying the selected control voltage (er,s, es,s, et,s) to the at least one phase of the converter.

    Power converter control method
    6.
    发明授权
    Power converter control method 有权
    电源转换器控制方法

    公开(公告)号:EP2453133B1

    公开(公告)日:2017-10-11

    申请号:EP10382294.6

    申请日:2010-11-11

    摘要: Optimizes the operation and control of electric generators against events produced in the power grid, such as voltage dips or overvoltages, comprising the following steps: detecting that the DC bus voltage level (V bus ) (301) exceeds the maximum operating limit established in normal conditions; enabling activation permission of the chopper (201); activating the different operating states (304) of the chopper (201) according to the DC bus voltage level (V bus ) (301) and to the current entering the DC bus (I in.bus ) from the generator; detecting that the DC bus voltage level (V bus ) (301) is within the normal operating range; enabling deactivation permission of the chopper (201); deactivating the different operating states (304) of the chopper (201) according to the DC bus voltage level (Vbus) (301) and to the current entering the DC bus (I in.bus ) from the generator.

    Control method for converting power, and electronic power converter adapted to carry out said method
    8.
    发明授权
    Control method for converting power, and electronic power converter adapted to carry out said method 有权
    功率转换和用于实施的控制方法,所述方法适于电力转换器

    公开(公告)号:EP2451071B1

    公开(公告)日:2016-04-06

    申请号:EP11382315.7

    申请日:2011-10-06

    IPC分类号: H02M7/49 H02M7/487 H02M1/00

    摘要: Control method for converting power in which a DC voltage is converted into alternating voltage, a first alternating voltage (AC1) and a second alternating voltage (AC2) being obtained by means of a first inverter (1) and a second inverter (2) respectively. Said alternating voltages (AC1, AC2) are combined in parallel, a resulting alternating voltage (AC12) being obtained. An additional resulting alternating voltage (AC34) is also generated, converting the DC voltage into alternating voltage, an additional alternating voltage (AC3) and another additional alternating voltage (AC4) being obtained by means of a first additional inverter (3) and a second additional inverter (4) respectively, and combining in parallel said additional alternating voltages (AC3, AC4). The additional resulting alternating voltage (AC34) is displaced in phase approximately 180° in relation to the resulting alternating voltage (AC12). Thanks to said method the common-mode voltages are also eliminated from at least one of the alternating voltages.