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    • 5. 发明公开
    • UMRICHTER UND VEFAHREN ZUR BESTIMMUNG EINES STROMRAUMZEIGERS
    • UMRICHTER UND VEFAHREN ZUR BESTIMMUNG EINES STRMRAUMZEIGERS
    • EP2263303A2
    • 2010-12-22
    • EP09729032.4
    • 2009-03-16
    • SEW-EURODRIVE GmbH & Co. KG
    • WOLF, HaraldHEIL, Manuel
    • H02M7/5387
    • H02M7/53873
    • The invention relates to a converter and to a method for determining a current space vector for a converter that can be operated with pulse-width modulation, comprising signaling electronics and a power output stage that comprises circuit breakers disposed in three half bridges, each of which comprises a lower and an upper branch. Means for detecting the respective currents are disposed either in all three lower or in all three upper branches of the half bridges. At least one associated current sampled value is determined within a time segment by using two of the three means provided for detecting the currents. A current space vector is formed from the current sampled values determined by said pair of means, or the current values are formed in the output branches, in particular for use in a control and/or regulating method. Said pair of means is selected differently according to the output voltage space vector.
    • 本发明涉及一种转换器和一种用于确定可以用脉冲宽度调制操作的转换器的当前空间矢量的方法,该转换器包括信号电子装置和包括设置在三个半桥中的断路器的功率输出级, 包括下部和上部分支。 用于检测各个电流的装置设置在半桥的所有三个下部或全部三个上部分支中。 通过使用三个用于检测电流的装置中的两个,在时间段内确定至少一个相关联的电流采样值。 当前空间矢量由所述一对装置确定的当前采样值形成,或者在输出分支中形成电流值,特别是用于控制和/或调节方法。 所述一对装置根据输出电压空间矢量不同地选择。