| Abstract |
The aim of this paper is the description of an interesting two stages DC-AC LF (direct voltage to alternative at low frequency) power converter of 8 kVA, designed as a model for a 500 kVA with 40 outputs one. The first stage is a dual thyristors inverter, coupled to an 8 SCR cyclo-converter. Multiple DC or AC outputs can be realised with other second stages. The low switching losses, and the high frequency of the intermediate voltage provide a compact and realiable device. This paper presents the ideal behaviour compared with the real one, with various loads. The construction problems as switches protection, output filtering, wiring, are also presented. Finally the design of a multiple outputs converter is presented. |
