Title :
Verification of frequency converter with small DC-link capacitor
Author :
Sarén, Hannu ; Pyrhönen, Olli ; Luukko, Julius ; Laakkonen, Ossi ; Rauma, Kimmo
Author_Institution :
Lappeenranta Univ. of Technol.
Abstract :
Traditionally, large DC-link capacitors have been used in voltage source inverters. By using MPPF-type capacitor the line current harmonic content is improved and the unreliable electrolytic capacitor can be omitted. In this paper, the dynamic behavior of an inverter with small DC-link capacitor has been studied by simulations and laboratory tests. A new modulating principle, named differential space vector pulse width modulation (DSVPWM), can deal with heavily fluctuating DC-link voltage and produce correct voltage vector with high accuracy. The performance of the DSVPWM has been verified with simulations
Keywords :
PWM invertors; electrolytic capacitors; frequency convertors; power capacitors; DC-link capacitor; differential space vector pulse width modulation; electrolytic capacitor; frequency converter; line current harmonic content; voltage source inverters; Capacitance; Capacitors; Energy storage; Frequency conversion; Inductors; Pulse width modulation inverters; Space vector pulse width modulation; Uniform resource locators; Variable speed drives; Voltage fluctuations; Adjustable speed drives; Converter control; Industrial applications; Modulation strategy;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219219
