Electronic AC sources have several inherent advantages over rotating. One of the essential, if we exclude the possibility of producing portable implementation of the source, is the adjustment of operating parameters (voltage, current, phase angle, added harmonic components).

Developed three-phase source is by design a dual-system (U-source, I-source), which was designed for calibrating electricity meters for the principal AMES Iskra, Kranj.

The focus of research has been concentrated on the implementation of the output amplifier stages and the digital correction procedure of eliminating their nonlinearity, with the aim of achieving the minimization of the harmonic distortion factor (THD <0.1%)

Important data sources:

• voltage range U-source: 30 V to 320 V
• range of current I-source: from 1 mA to 60 A
• setting phase shift: in steps by 0.1 deg
• output power per phase of voltage and current stage: 60 VA
• generation of harmonic components: up to and including 30.-th

Contact: doc. dr. Peter Zajec
Phone:Fax+386 1 4768 479
peter.zajec[NoSpam]fe.uni-lj.si

Project-Portable power source for electricity meters calibration.pdf

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