Abstract
This paper introduces a robust controller design method for maintaining microgrid operation under grid islanded mode by solid state transformers (SST) using master-slave control strategy. In the grid islanded mode, the grid voltage controller of the master SST, designed using μ synthesis, ensures stable control of the microgrid voltage. This paper extends the uncertainty modeling to general grid impedance uncertainties, slave SST current command uncertainties and master SST DC link voltage uncertainties. Also, the proposed design method is general and flexible enough to be readily scaled for applications in larger power systems. A three-SST system is used to demonstrate the design method with twelve uncertainties modeled. The designed system stability and performance robustness are validated in μ analysis, PLECS simulation, and a controller-hardware-in-the-loop (CHIL) test bed with a Real-Time Digital Simulator (RTDS).
Original language | English (US) |
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Title of host publication | ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781509007370 |
DOIs | |
State | Published - Feb 13 2017 |
Event | 2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 - Milwaukee, United States Duration: Sep 18 2016 → Sep 22 2016 |
Other
Other | 2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 |
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Country/Territory | United States |
City | Milwaukee |
Period | 9/18/16 → 9/22/16 |
Keywords
- CHIL
- master-slave
- microgrid
- Robust control
- RTDS
- smart grid
- SST
- uncertainties
- μ synthesis
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering
- Energy Engineering and Power Technology
- Control and Optimization