Paper Info
Title
Analysis Of Dc-Link Voltage Ripple In Voltage Source Inverters Without Electrolytic Capacitor
Abstract
In this paper, the DC-link voltage ripple is analyzed for an inverter without electrolytic capacitor. As the capacitance density of non-electrolytic capacitors are significantly lower than electrolytic capacitors, for a non-electrolytic capacitor based three-phase inverter, the DC-link voltage ripple is much higher than traditional inverter, which will cause more THD on load current and originates voltage stability problems when cascaded with the front-end converter. To avoid these disadvantages, the DC-link voltage ripple must be fully analyzed for a non-electrolytic DC-link capacitor three-phase inverter. This paper presents the voltage ripple analysis of the voltage source inverter under the modulation methods of SPWM and SVPWM. The results show that the DC-link voltage ripple has special patterns which relate to switching frequency, modulation ratio, output current amplitude, load power factor, and reference voltage angle. According to these analysis, the minimized DC-link capacitance can be selected to satisfy voltage ripple requirement.
Year
DOI
Venue
2018
10.1109/IECON.2018.8591719
IECON 2018 - 44TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY
Keywords
Field
DocType
DC-link voltage ripple, voltage source inverter, DC-link capacitance minimization, SiC MOSFET based inverter
Electrolytic capacitor,Inverter,Capacitor,Capacitance,Control theory,Voltage source,Voltage reference,Power factor,Engineering,Ripple,Electrical engineering
Conference
ISSN
Citations 
PageRank 
1553-572X
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Tianyu Chen1105.37
Sen Li22711.31
Babak Fahimi39516.67