Analog computer simulation of a three-phase full-wave controlled rectifier bridge

This paper establishes analog computer simulations of the widely used three-phase full-wave controlled rectifier bridge. It is shown that when the individual currents in the legs of the rectifier bridge are not developed directly in the simulation, it is possible to avoid the instability and drift problems which have plagued previous investigators. Furthermore, by proper attention to the periodic nature of the operation of the rectifier bridge, the number of computer components may be considerably reduced. In particular, only two electronic switches need be used if the operating range of the delay angle is small. The unique features of the modern high-speed repetitive-operation type of analog computer are utilized throughout the analysis. Computation time is typically reduced by a factor of 300 when compared with existing digital computer routines. The accuracy of the simulation is illustrated by comparing the computer output to recordings taken from an actual system. Good correlation is demonstrated for both transient and steady-state operation.

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