Talks and Poster Presentations (with Proceedings-Entry):
T. Wiesinger, H. Ertl:
"A Random Sampling Method for a PWM Converter Electrolytic Capacitor Monitoring Unit";
Talk: International Conference on Power Electronics and Intelligent Motion (PCIM),
Nürnberg, Deutschland;
2009-05-12
- 2009-05-14; in: "Proceedings of International Exhibition&Conference for Power Electronics Intelligent Motion Power Quality",
(2009),
ISBN: 978-3-8007-3158-9;
289
- 294.
English abstract:
In this paper a specific sampling method for a low-cost determination of active power and RMS value
is introduced. The developed method will be applied for life-cycle monitoring of DC link electrolytic
power capacitors in PWM converters. The monitoring is based on an on-line identification of the
capacitorīs ESR using voltage/current measurement signals and calculating active power and RMS
current. Due to the averaged characteristic of these quantities high-speed sampling can be avoided.
Instead undersampling is used which opens the application of low-cost microcontrollers. To minimize
sampling errors, the sampling clock advantageously is of random type, e.g., provided by an oscillator
with phase noise.
Created from the Publication Database of the Vienna University of Technology.