Patent ID: 9190921
Filing Date: 2015-11-17
Classification: H02M

Abstract:
1. A transformerless cycloconverter for connecting a first three-phase system to a second three-phase system by means of bridge modules, each having electronic semiconductor switches, the cycloconverter having precisely six bridge modules, each bridge module includes one or a series circuit of bridge modules, said transformerless cycloconverter comprising: a) a first bridge module or a first series circuit of bridge modules being connected firstly to a first conductor of the first three-phase system and secondly to a first conductor of the second three-phase system, b) a second bridge module or a second series circuit of bridge modules being connected firstly to a second conductor of the first three-phase system and secondly to the first conductor of the second three-phase system, c) a third bridge module or a third series circuit of bridge modules being connected firstly to the second conductor of the first three-phase system and secondly to a second conductor of the second three-phase system, d) a fourth bridge module or a fourth series circuit of bridge modules being connected firstly to a third conductor of the first three phase system and secondly to the second conductor of the second three-phase system, e) a fifth bridge module or a fifth series circuit of bridge modules being connected firstly to the third conductor of the first three-phase system and secondly to a third conductor of the second three-phase system, f) a sixth bridge module or a sixth series circuit of bridge modules being connected firstly to the first conductor of the first three-phase system and secondly to the third conductor of the second three-phase system.