I. Theoretical investigation of power electronic equipment and systems
The chaotic behaviour of the tolerance band AC current control of a three phase full bridge AC-DC converter.
The research and discussion of the strange sub-harmonic behaviour of a special, high frequency inverter operating on the principle of time-sharing.
Environment-friendly utilisation of regeneration and waste energy for electrical energy production.
Stability analysis method based on the virtual state vector e.g. for a dual channel resonant converters.
Investigation method for the bifurcation behaviour of the power-factor-correction (PFC) boost converter under a conventional peak current-mode control.
Main data of documentation relating to the above fields:
Number of monograph: 3
Number of publications: 64
Number of references: 116
II. R&D works with practical realisations connecting to the welding technologies
AC/DC TIG welding apparatus family (1997-98)
(HTR-180-DC-TIG type in series production from 1998)
Universal electronic ballast series for fluorescent lamps (1997-98).
Accumulator charging equipment for special requirements
(1998-99).
(ANSZ-202, -267 types, the
charging voltage 48-220 V, in series production from 2000)
DC and AC supply source family operated from accumulator plant on field (1999-2000).
Controlled high voltage supply source of adjustable voltage and current (2000-01).
Main data of documentation relating to the above fields:
Number of lectures: 2
Number of documentation for production: 39
Number of publications: 15
Number of references: 7
Number of patents: 4