| 摘要 |
The invention relates to a self-commutated power converter (2) of a voltage-impressing converter with n high-power modules (T11, ..., T112; T21, ..., T212; T31, ..., T312). According to the invention, these high-power modules (T11, ..., T112; T21, ..., T212; T31, ..., T312) are each detachably connected to a phase cooling body (20, 22, 24) in phases and are connected one above the other to a partition wall (18) in such a way that their cooling ribs (28) protrude through recesses (30) in said partition wall (18) and into a ventilation area (26), each cooling rib running horizontally. A discharged-air channel (32) is located in the ventilation area (26). Said channel is configured in such a way that cooling air of the ventilation area always flows laterally between the cooling ribs on both sides of the phase cooling body (20, 22, 24), into the discharged-air channel (32). The inventive self-commutated power converter (2) of the voltage impressing converter is therefore much smaller, lighter and more economical than a conventional power converter (2) and has high-power modules (T11, ..., T112; T21, ..., T212; T31, ..., T312) which can each be fully exploited in terms of their power.
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