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Boosting resonant switched-capacitor voltage tripler

Chojowski Maciej, Sosnowski Robert, Baszyński Marcin

Archives of Electrical Engineering

2023

Vol. 72, nr 2

373--389

This elaboration presents the concept of a unidirectional DC–DC switchedcapacitor converter operating as a voltage tripler. The system consists of two resonant cells with switched capacitors and chokes. This proposed converter topology achieves low voltages on semiconductor switches (diodes and transistors) compared to the classic SC series-parallel converter or the boost topology. The output voltage on the capacitors is reduced in the proposed converter because it is divided into two series-connected capacitors with asymmetric distribution. The presented results describe the analytical description of the system operation and the analytical equation for semiconductor currents. A simulation and experimental results have been performed. The system efficiency and three voltage gain values were measured in the experimental setup. The efficiency measured was also compared with the analytical determination curve for loss analysis and further converter optimization.

Performance study of a new high instantaneous power impulse converter with a switched capacitor unit

Zając L., Malinowski M., Styński S., Jasiński M.

Power Electronics and Drives

2017

Vol. 2 (37), No. 1

5--15

A new high instantaneous power impulse converter (HIPIC) with a switched capacitor unit has been presented. HIPIC generates very short impulses (hundreds of microseconds) of instantaneous power in megawatt range while the average power is much lower (tens of kilowatts). The presented topology is composed of step-down converters, an H-bridge converter and a switched capacitor, adjusted with a new current control. It allows one to achieve the output current impulses with very short rising and falling times and strict peak current control with low ripples.