Abstract
This paper presents a new control scheme for virtual synchronous generators connected to weak grids. The proposed approach consists of two major parts. The first part holds a cooperative linear and nonlinear controller in order to emulate the synchronous generator behavior such that by preparing virtual inertia, power and frequency oscillations get damped. The second part deals with a control scheme for voltage and current inner loops. Both control schemes are based on the back-stepping method, while in the latter sliding mode controllers in the dq reference frame are also used. The controller system design is such that in addition to tracking reference commands, it is robust to system model uncertainties and disturbances. In the process of controller design the system stability is also considered. The desired performance of the proposed control scheme for a virtual synchronous generator connected to weak grids in the presence of disturbances and uncertainties in model parameters is demonstrated through simulation results.
Original language | English |
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Title of host publication | 6th Annual International Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2015 |
Number of pages | 6 |
Publisher | IEEE |
Publication date | Apr 2015 |
Pages | 509-514 |
Article number | 7093327 |
ISBN (Electronic) | 9781479976539 |
DOIs | |
Publication status | Published - Apr 2015 |
Event | 6th Annual International Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2015 - Tehran, Iran, Islamic Republic of Duration: 3 Feb 2015 → 4 Feb 2015 |
Conference
Conference | 6th Annual International Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2015 |
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Country/Territory | Iran, Islamic Republic of |
City | Tehran |
Period | 03/02/2015 → 04/02/2015 |
Series | 6th Annual International Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2015 |
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Bibliographical note
Publisher Copyright:© 2015 IEEE.
Keywords
- back-stepping method
- sliding mode controller
- virtual synchronous generator
- Weak grids