Title:
MULTI-FREQUENCY CONTROL SYSTEM AND METHOD BY MULTIPLE BTB CONVERTER-BASED MICROGRIDS
Document Type and Number:
WIPO Patent Application WO/2017/030228
Kind Code:
A1
Abstract:
The present invention comprises: a stand-alone (or off-grid) microgrid, which includes at least one distributed power supply and an energy storage apparatus for controlling a frequency per each microgrid to the respective permissible range as well as for power quality compensation and improvement to solve power quality degradation, if it occurs, in each microgrid, through a multi-function back-to-back (BTB) voltage source converter (VSC) consisting of a rectifier and an inverter connected at a linkage point of the microgrids; and a back-to-back (BTB) voltage source converter (VSC), which consists of a rectifier unit and an inverter unit for sharing a common DC link between the rectifier unit and the inverter, and links multiple stand-alone (or off-grid) microgrids via an AC line for performing a multi-frequency control which considers a load quality level per microgrid.
Inventors:
KIM HAK-MAN (KR)
YOO HYEONG JUN (KR)
YOO HYEONG JUN (KR)
Application Number:
PCT/KR2015/008911
Publication Date:
February 23, 2017
Filing Date:
August 26, 2015
Export Citation:
Assignee:
UNIV INCHEON IND ACAD COOP FOUND (KR)
International Classes:
H02J3/06
Foreign References:
| KR20110034898A | 2011-04-06 | |||
| JP2013258806A | 2013-12-26 | |||
| KR20130102681A | 2013-09-23 | |||
| US20110012352A1 | 2011-01-20 | |||
| US20070177319A1 | 2007-08-02 |
Attorney, Agent or Firm:
HWANG MOK PARK IP GROUP (KR)
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