Publicaties
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Power Converters and Voltage Regulators KU Leuven
Fully Integrated Wide Input Voltage Range Capacitive DC-DC Converters: The Folding Dickson Converter KU Leuven
This paper presents a modified Dickson converter to achieve wide input range capacitive DC-DC converters. Several implementations are carefully studied and compared, which shows that the folding Dickson converter is the best choice, not only for its reduced dynamic losses, but also for its very regular structure and operation. Folding is achieved by merging the terminals of two or more flying capacitors, creating one equivalent flying capacitor. ...
Simple time domain analysis of a 4-level H-bridge flying capacitor converter voltage balancing Universiteit Gent
Flying Capacitor (FC) multilevel Pulse Width Modulated (PWM) converters are an attractive choice due to the natural balancing property of the capacitor voltages. The balancing can be studied in the time domain, which results in easy to interpret expressions regarding parameter influence. Time domain analysis is normally done by time averaging of the system model over a PWM-period. In this paper a new method is presented starting from the ...
Simple time domain analysis of a five-level H-bridge Flying Capacitor converter voltage balancing Universiteit Gent
Flying Capacitor (FC) multilevel Pulse Width Modulated (PWM) converters are an attractive choice due to the natural balancing property of the capacitor voltages. The balancing can be studied in the time domain, which results in easy to interpret expressions regarding parameter influence. Time domain analysis is normally done by time averaging of the system model over a PWM-period. In this paper a new method is presented starting from the ...
Four-level H-bridge flying capacitor converter voltage balance dynamics analysis Universiteit Gent
A single-leg flying capacitor converter voltage balance dynamics analytical solution may be obtained using switched systems time domain approach based on stitching of switching intervals piece-wise analytical solutions in combination, for inductance dominated load, with a small parameter technique. In this paper, a symmetric four-level H-bridge flying capacitor converter common mode voltage balance dynamics solution is obtained from its ...
Calculating boundaries for the natural voltage balancing time-constant of the constant duty cycle single leg flying capacitor converter Universiteit Gent
Quasi-Two-Level Converter for Overvoltage Mitigation in Medium Voltage Drives KU Leuven
This work focuses on a Quasi-Two-Level (Q2L) converter topology for medium voltage drives (MVDs). It targets applications where the drive and the motor are connected via a long cable. In such systems a dv/dt filter is usually placed between the drive and motor to increase the rise time of inverter output voltage pulses, and thereby reduce the motor terminal overvoltage. The Q2L converter allows for an intrinsic reduction in the motor terminal ...
A self-biased 5-to-60V input voltage and 25-to-1600µW integrated DC-DC buck converter with fully analog MPPT algorithm reaching up to 88% end-to-end efficiency KU Leuven
Energy harvesting is seen as an enabling technology for autonomous wireless sensing in automotive applications. This technology may rely on piezoelectric or electrostatic energy conversion using the energy available during the tire impact with the road. The power management system has to transfer harvested power to the load battery (few μW to mW) with the highest possible efficiency. An electrostatic harvester can generate voltages up to 40V ...