EVALUATION OF A THREE PHASE RECTIFICATION OF HIGH DYNAMIC PERFORMANCE

The paper is concerned with a three phase configuration devised for rectification. The power is transferred from the network to the output by high frequency sinusoidal current pulses and it is controlled by the pulse frequency and/or by the clamping of the voltage across the switched capacitor. The pulse frequency is lower for thyristors and higher for transistors. It offers unit power factor in the whole control range, fast dynamic response and makes filtering easier because of the high pulse frequency. The operation of the circuit has been described in a previous paper (NAGY, 1989). In this paper the train of the clamped volt ages of the switched capacitor for sym- metrical and asymmetrical energy supply is determined and an approximate investigation of the harmonic components in the input filter is described