Analysis of High-Voltage Converters With Serial Connection Units And With Input Current Correction

DC/DC high-voltage power converters with input voltage of 1500 … 4000 V are considered. In such converters serial connection units, input current correction and galvanic separation between input and output voltages are applied. Basis power circuit and comparison criteria are chosen. Calculated equations for calculation amplitude of ripple of input current and power losses in power semiconductors for different power circuits and control algorithms are presented. Comparative analysis results of power circuits and control algorithms are presented. The article under review is of interest to researchers and developers of DC/DC high-voltage power converters, which have high requirements to consumption current quality with the use of relatively low-voltage power transistors.