CVVOZE Power Laboratories

Brno University of Technology


The research infrastructure CVVOZEPowerLab was founded in 2013 as part of the Centre for Research and Utilization of Renewable Energy (CVVOZE), a research establishment of the Faculty of Electrical Engineering and Communication at the Brno University of Technology. Its main objective is to support research activities on renewable energy sources and applications, training of high quality staff, and to expand the cooperation with universities around Europe.

The research infrastructure consists of two special laboratories located in the Scientific-Technical Park of Professor List. The first is the laboratory of high currents. The technology of the laboratory enables the generation of alternate currents up to a 150kA magnitude at a 250V voltage and direct currents up to a 50kA magnitude at a 1000V voltage. The second laboratory is a shielded high voltage laboratory. The technology of the laboratory enables the generation of a 300kV AC voltage with a maximum 1A current and the DC voltage pulses of both polarities up to 1000kV with up to 100kJ energy. The attenuation of the laboratory shielding equals 90 dB in the frequency range 30MHz to 1GHz for the electric field and over 60dB in the frequency range 10kHz to 30MHz for the magnetic field.

CVVOZE AC high voltage source in the laboratory of high voltage CVVOZE LV part and the testing bench of the laboratory of high currents CVVOZE Impulse generator

Main Research Fields:

  • Research on the electrical switching technology adapted to DC equipment
  • Research on physics of the electric arc during a switching process
  • The research and diagnostics of faults in the structure of insulation materials
  • Research on interference, methodology of EMC measurement and testing
  • Reliability and safety of supply systems

Recent Publications:

  1. M. Krabal, J. Škoda, J. Štepánek, J. Sumec, “Laboratory High Voltage Capacitor with Low PD Level and Low Dissipation Factor”, in proceedings of the 17th International Scientific Conference on Electric Power Engineering (EPE), Prague (CZ), 16 May, 2016. ISBN: 978-1-5090-0908- 4.
  2. M. Krabal, J. Škoda, J. Štĕpánek, S. Sumec, P. Baxant, “Use of Photometry in the Field of High Voltage”, in proceedings of IEEE Lighting Conference of the Visegrad Countries (LUMEN V4), Warsaw (PL), 2016. ISBN: 978-1-5090-3304- 1.
  3. B. Pongráx, F. Krčma, L. Dostál, H.-M. Kim, T. Homola, Z. Machala, “Effects of corona space charge polarity and liquid phase ion mobility on the shape and velocities of water jets in the spindle jet and precession modes of water electro- spray”, Journal of Aerosol Science (101), 196-206. ISSN: 0021-8502.
  4. P. Kloc, V. Aubrecht, M. Bartlová, “Effective plasma radius for Planck mean absorption coefficient”, in proceedings of the 21st International Conference on Gas Discharges and their Applications, Nagoya (JP), 11-16 September, 2016.


Centre for Research and Utilization of Renewable Energy