Abstract
This paper describes a variable-speed motion-sensorless permanent magnet synchronous generator (PMSG) control system for wind energy generation. The proposed system contains a PMSG connected to the grid by a back-to-back PWM inverter with bidirectional power flow, a line filter, and a transformer. The control system employs PI current controllers with crosscoupling decoupling for both inverters, an active power controller, and a DC link voltage controller. The PMSG rotor speed without using emf integration, and the line voltage frequency are estimated by two PLL based observers. A Dmodule filter is used to robustly estimate the grid voltage positivesequence for control in the case of asymmetric voltages. The paper investigates the ride-through performance of this system during asymmetric power grid voltage sags. Design details for various parts of the control system are presented, together with experimental results for single-, two-, and three-phase voltage source sags. Smooth transition through asymmetric voltage sags is demonstrated by all experiments.
Originalsprog | Engelsk |
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Titel | IEEE Industry Applications Conference, 42nd IAS Annual Meeting : Conference record |
Antal sider | 8 |
Forlag | Electrical Engineering/Electronics, Computer, Communications and Information Technology Association |
Publikationsdato | 2007 |
Sider | 171-178 |
ISBN (Trykt) | 978-1-4244-1260-0 |
DOI | |
Status | Udgivet - 2007 |
Begivenhed | Industry Applications Conference, IAS 2007 - New Orleans, Louisiana, USA Varighed: 23 sep. 2007 → 27 sep. 2007 |
Konference
Konference | Industry Applications Conference, IAS 2007 |
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Land/Område | USA |
By | New Orleans, Louisiana |
Periode | 23/09/2007 → 27/09/2007 |