Detail publikačního výsledku

Power Loss Measurement for Small Closed Material Samples

ZDRAŽIL, L.; ROUBAL, Z.

Originální název

Power Loss Measurement for Small Closed Material Samples

Anglický název

Power Loss Measurement for Small Closed Material Samples

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

When measuring the specific losses on small ferrite cores, high demands are placed on the wattmeter used. Commonly available wattmeter types suitable for 50 Hz frequency do not achieve sufficient sensitivity for ferrite materials for switching power supplies and the measurement uncertainties are too high. For the current channel, it is necessary to achieve very small phase errors and high sensitivity. These demanding requirements are necessary for measurements at low magnetic induction saturation Bmax. The proposed sensitive wattmeter achieves higher gain accuracy for both channels than the oscilloscope solution, while maintaining a high bandwidth of approximately 50 kHz with a measurement uncertainty below 2%. the ability to quickly measure the dependence of specific losses on excitation reduces the error caused by self-heating.

Anglický abstrakt

When measuring the specific losses on small ferrite cores, high demands are placed on the wattmeter used. Commonly available wattmeter types suitable for 50 Hz frequency do not achieve sufficient sensitivity for ferrite materials for switching power supplies and the measurement uncertainties are too high. For the current channel, it is necessary to achieve very small phase errors and high sensitivity. These demanding requirements are necessary for measurements at low magnetic induction saturation Bmax. The proposed sensitive wattmeter achieves higher gain accuracy for both channels than the oscilloscope solution, while maintaining a high bandwidth of approximately 50 kHz with a measurement uncertainty below 2%. the ability to quickly measure the dependence of specific losses on excitation reduces the error caused by self-heating.

Klíčová slova

soft ferrites, wattmeter, specific losses in ferromagnetics, magnetic measurements

Klíčová slova v angličtině

soft ferrites, wattmeter, specific losses in ferromagnetics, magnetic measurements

Autoři

ZDRAŽIL, L.; ROUBAL, Z.

Rok RIV

2024

Vydáno

29.05.2023

ISBN

978-80-972629-6-9

Kniha

Proceedings of the 14th International Conference on Measurement

Strany od

183

Strany do

186

Strany počet

4

URL

https://www.measurement.sk/M2023/doc/Proceedings_M2023.pdf

BibTex

@inproceedings{BUT183713,
  author="Lukáš {Zdražil} and Zdeněk {Roubal}",
  title="Power Loss Measurement for Small Closed Material Samples",
  booktitle="Proceedings of the 14th International Conference on Measurement",
  year="2023",
  pages="183--186",
  doi="10.23919/MEASUREMENT59122.2023.10164425",
  isbn="978-80-972629-6-9",
  url="https://www.measurement.sk/M2023/doc/Proceedings_M2023.pdf"
}