Projects per year
Abstract
The well-known inherent second-order ripple power in single phase converters imposes harmonic stress on the dc link, resulting in low efficiency and overheating issues. In order to avoid installing bulky electrolytic capacitors or LC filters in the dc-link, this paper presents a differential buck inverter to improve the dc link power quality, and an improved active power decoupling method is proposed to achieve ripple power reduction for both AC-DC and DC-AC conversions. The ripple energy storage is realized by the filter capacitors, which are connected between the output terminal and the negative dc bus. By properly controlling the differential mode voltage of the capacitors, it is possible to transfer desired energy between the DC port and AC port. The common mode voltage is controlled in such a way that the ripple power on the dc side will be reduced. Furthermore, an autonomous reference generation technique is proposed to provide accurate ripple power compensation, and closed-loop controllers are also designed based on small signal models. The effectiveness of this power decoupling method is verified by detailed simulation studies as well as laboratory prototype experimental results.
Original language | English |
---|---|
Title of host publication | Proceedings of the 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) |
Publisher | IEEE Press |
Publication date | Jun 2015 |
Pages | 2395-2402 |
Chapter | 8 |
DOIs | |
Publication status | Published - Jun 2015 |
Event | 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia 2015) - Seoul, Korea, Republic of Duration: 1 Jun 2015 → 5 Jun 2015 |
Conference
Conference | 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia 2015) |
---|---|
Country/Territory | Korea, Republic of |
City | Seoul |
Period | 01/06/2015 → 05/06/2015 |
Keywords
- Active power decoupling
- Differential buck converter
- Power quality
- Small signal modeling
Fingerprint
Dive into the research topics of 'Power decoupling method for single phase differential buck converter'. Together they form a unique fingerprint.Projects
- 1 Finished
-
HARMONY: HARMONY - Harmonic identification, mitigation and control in power electronics based power systems
Blaabjerg, F., Bak, C. L., Wang, X., Beres, R. N., Kwon, J., Gui, Y., Yoon, C. & Ebrahimzadeh, E.
01/02/2013 → 28/02/2018
Project: Research