Fuzzy-PI-based sensorless frequency and voltage controller for doubly fed induction generator connected to a DC microgrid

Bayhan S., DEMİRBAŞ Ş., Abu-Rub H.

IET RENEWABLE POWER GENERATION, cilt.10, sa.8, ss.1069-1077, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 10 Sayı: 8
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1049/iet-rpg.2015.0504
  • Dergi Adı: IET RENEWABLE POWER GENERATION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1069-1077
  • Anahtar Kelimeler: distributed power generation, asynchronous generators, sensorless machine control, fuzzy control, PI control, power generation control, power generation economics, rectifying circuits, rotors, DC-AC power convertors, frequency control, voltage control, electric current control, stators, position measurement, sensors, wind power plants, fuzzy-PI-based sensorless frequency controller, fuzzy-PI-based sensorless voltage controller, doubly fed induction generator, fuzzy-proportional-integral-based control strategy, dc microgrid system, cost reduction, dc-ac converter, diode rectifier, performance improvement, rotor current controller, fuzzy PI-based control algorithm, stator frequency detection, rotor position detection, dc bus voltage, wind speed conditions, position sensor, dynamic performances, steady-state performances, DIRECT POWER-CONTROL, 3-PHASE PWM RECTIFIER, MRAS OBSERVER, DFIG, LINK, CONVERTERS, DESIGN, SYSTEM
  • Gazi Üniversitesi Adresli: Evet

Özet

This study presents fuzzy-proportional-integral (PI)-based sensorless frequency and voltage control strategy for doubly fed induction generator connected to a dc microgrid system. A significant reduction of the costs can be achieved by this topology because only a single dc/ac converter and a diode rectifier are required instead of the traditional back-to-back converter topology. To improve the performance of the rotor current controller, a fuzzy PI-based control algorithm is used. Furthermore, a simple sensorless control technique based on the detection of the stator frequency is employed to detect the rotor position. The sensorless control technique can operate without the knowledge of the machine parameters. The main aim of this study is to keep the stator frequency as well as the dc bus voltage at the desired value under different load and wind speed conditions without using position sensor. Simulation and experimental studies were performed to verify the dynamic and steady-state performances of the proposed control strategy The results show that the proposed strategy not only has an excellent steady state and dynamic performance, but also it is robust against the variation of system parameters such as wind speed and load.