Control of a STATCOM‐assisted self‐excited induction generator‐based WECS feeding non‐linear three‐phase and single‐phase loads. Issue 4 (5th February 2019)

• Record Type: Journal Article
• Authors: Satpathy, Aradhya Sambhu; Kastha, Debaprasad; Kishore, Krishna
• Is Part Of: IET power electronics. Volume 12:Issue 4(2019)
• Page Start: 829
• Page End: 839
• Publication Date: 2019-02-05
• Subjects: harmonic distortion -- state feedback -- wind power plants -- asynchronous generators -- power generation control -- static VAr compensators -- wind turbines -- voltage control -- power grids; STATCOM‐assisted self‐excited induction generator‐based WECS -- nonlinear three‐phase -- single‐phase loads -- self‐excited induction generator‐based wind energy conversion systems -- stand‐alone loads -- adjustable VAR -- static compensator -- fixed capacitor bank -- VAR demand -- state feedback‐based control scheme -- independent control -- STATCOM DC‐link voltage -- SEIG terminal voltage -- harmonic‐free voltage -- harmonic compensation technique -- wind turbine pitch angle control -- voltage control -- pitch control strategies -- load demand -- transient load voltage -- load voltage total harmonic distortion -- similar controllers; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2018.5482
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : Self‐excited induction generator (SEIG)‐based wind energy conversion systems (WECS) are very popular for supplying stand‐alone loads at remote sites. The SEIG needs adjustable VAR to regulate its terminal voltage and frequency. Usually, a combination of a static compensator (STATCOM) and a fixed capacitor bank is used to meet this VAR demand. Here, a state feedback‐based control scheme is proposed to achieve independent control of the STATCOM DC‐link voltage and the SEIG terminal voltage. Further, to ensure harmonic‐free voltage at the SEIG terminal while supplying non‐linear three‐phase or single‐phase loads, a harmonic compensation technique is also developed. The wind turbine pitch angle control is utilised to regulate the frequency of the SEIG terminal voltage. The combined action of the proposed voltage control and pitch control strategies ensures that the load voltage and frequency are maintained at their respective rated values with very low harmonic distortion irrespective of variation in the wind speed and load demand. The performance of the proposed controllers (in terms of transient load voltage and frequency deviations and load voltage total harmonic distortion), as verified on a laboratory prototype, are found to be superior to that of similar controllers proposed in the literature.