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CONVERTER COMPRISING REDUNDANT SWITCH-FUSE COMBINATIONS AND METHOD FOR SELECTIVE TRIGGERING OF THE FUSE IN THE EVENT OF SWITCH FAILURE
CONVERTER COMPRISING REDUNDANT SWITCH-FUSE COMBINATIONS AND METHOD FOR SELECTIVE TRIGGERING OF THE FUSE IN THE EVENT OF SWITCH FAILURE
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机译:包含冗余开关熔断器组合的转换器以及在发生开关故障时选择性触发保险丝的方法
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摘要
The invention relates to a converter (1) comprising an intermediate circuit (3) for providing a DC voltage (10) between a positive conductor (11) and a negative conductor (12), a phase conductor (8, 9) for receiving and/or output of an AC voltage, and a half-bridge circuit (17) comprising a first switch arrangement (18) for connecting the positive conductor (11) to the phase conductor (8, 9) and a second switch arrangement (19) for connecting the negative conductor (12) to the phase conductor (8, 9). In case of a defect of a semiconductor switch (20, 21) of the converter (1), the converter (1) is to be able to protect itself and continue to operate. For this purpose, the first switch arrangement (18) and the second switch arrangement (19) respectively have a parallel connection made of multiple switching branches (Z) and, in each switching branch (Z), one of the semiconductor switches (20, 21) is provided with an intrinsic safety fuse (22) switched in series to the contact gap of the semiconductor switch (20, 21).
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