A Design of PWM Controlled Calibrator of Non-Sinusoidal Voltage Waveforms

Goran Petrovic, Juraj Alojzije Bosnic, Goran Majic and Marin Despalatovic
Additional contact information
Goran Petrovic: FESB, University of Split, R. Boskovica 32, HR-21000 Split, Croatia
Juraj Alojzije Bosnic: FESB, University of Split, R. Boskovica 32, HR-21000 Split, Croatia
Goran Majic: FESB, University of Split, R. Boskovica 32, HR-21000 Split, Croatia
Marin Despalatovic: FESB, University of Split, R. Boskovica 32, HR-21000 Split, Croatia

Energies, 2019, vol. 12, issue 10, 1-14

Abstract: Power quality conditions in electrical power networks have drastically changed in recent years. A number of electrical devices and power generators that are the main sources of disturbances is ever increasing. Thus, the need for calibrators of different electrical equipment that will be able to generate non-sinusoidal voltages and/or currents has proportionally increased. This paper presents a simple, unconventional approach of generating voltage harmonics, which do not rely on digital-to-analog (D/A) boards and power amplifier to amplify low-voltage signals. A fundamental part of the calibrator is the insulated gate bipolar transistor (IGBT) inverter with low-pass LRC filter at its output, which eliminates higher harmonics from the generated voltage. Desired voltage waveform is directly generated at the inverter’s output, thus the power amplifier is omitted from the setup. The modulation technique used for controlling IGBTs is the well-known sine pulse width modulation (PWM). Magnitudes and phase angles of the desired harmonics are regulated to compensate for the phenomena that may have a negative influence on their values: Nonlinearities of the system, temperature variation, voltage drops on parasitic components, etc. Experimental results show great potential of the proposed method for the design of the voltage calibrator for various electrical instruments.

Keywords: calibration; harmonic distortion; power quality; pulse width modulation; spectral analysis; voltage measurement (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/10/1966/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/10/1966/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:10:p:1966-:d:233544

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().