An MRAS Speed Observer Based on Control Winding Flux for Sensorless Control of Stand-Alone BDFIGs

Xu, Wei; Ebraheem, Alameen K.; Zhu, Jun; Hussien, Mohamed G.

doi:10.1109/tpel.2019.2954990

Cited by 19 publications

(7 citation statements)

References 20 publications

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“…In order to avoid the integration process for the flux estimation, the MRAS speed observers employing the dqaxis CW flux as the control state variable have been proposed for sensorless control of BDFRG and BDFIG in [98] and [99], respectively.…”

Section:  Speed Observers Dependent On Machine Parametersmentioning

confidence: 99%

Recent Advances of Control Technologies for Brushless Doubly-Fed Generators

Liu

Hussien

Shao³

et al. 2021

IEEE Access

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The brushless doubly-fed generator (BDFG) is a kind of dual-electrical-port field-modulated electrical machine containing two sets of stator windings with different pole pairs. The stator power winding undertakes most of the power inflow and outflow, and the stator control winding connected to the power converter can be utilized to regulate the machine operation status. Consequently, the rotor no longer needs to be supplied by the power converter, so that the brushes and slip rings can be removed. The BDFG can be used for grid-connected power generation as well as standalone power generation. This paper reviews recent advances of control technologies for BDFGs under different operation conditions, e.g., gridconnected ac power generation with normal and faulty grids, standalone ac power generation with normal and special loads, and dc power generation. The progresses of sensorless control technologies for BDFGbased power generation systems are also discussed. The classification and comparison are carried out to discover the similarities and differences between theses control technologies. This paper is in the hope of inspiring new, ground breakings and progresses for high-performance BDFG power generator applications.

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Section:  Speed Observers Dependent On Machine Parametersmentioning

confidence: 99%

Recent Advances of Control Technologies for Brushless Doubly-Fed Generators

Liu

Hussien

Shao³

et al. 2021

IEEE Access

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“…BDFTSIG applications have recently witnessed booming interest especially in the past 10 years [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. A high performance vector control based technique was elaborated showing acceptable performance yet at the penalty of less tolerance to machine parameters' variation [7].…”

Section: Introductionmentioning

confidence: 99%

Indirect Vector-Controlled Brushless Doubly-Fed Twin-Stator Induction Generator for Wind Energy Conversion Application

2020

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Wind energy conversion systems (WECSs) seem certain to play a major part in the world’s energy future due to their known high power capacity. The maximum power tracking is unavoidable due to the wind velocity variation and the non-linear relation with the turbine mechanical power. Commercial wind turbines are commonly coupled to either doubly-fed induction generators (DFIGs), wound rotor synchronous generators (WRSG) or permanent magnet synchronous generators (PMSGs). The DFIG-based WECS has several advantages over others. One of which is the power converter in such systems only deals with rotor power, hence the converter rating can run at reduced power rating. However, DFIG has the famous disadvantage of the presence of slip rings which leads to increased maintenance costs and outage times. Hence, brushless doublyfed induction machines (BDFIMs) can be considered as a viable alternative at the penalty of complicated controller requirement and limited decoupling control capability due to the machine’s non-linearity. In this paper, an enhanced performance indirect vector controller is proposed for WECS based on brushless doubly-fed twin-stator induction generator (BDFTSIG). The presented controller offers (i) simplified implementation, (ii) decoupled active-reactive power control, and (iii) a wide range of operation. The proposed controller performance is investigated under various loading conditions showing enhanced transient and minimal steady-state oscillations in addition to complete active/reactive power decoupling. The rigorous simulation and experimental results verify the claimed controller effectiveness under all possible operating conditions for sub- and super-synchronous speed range.

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“…Many control strategies have been proposed for BDFIM drive system, such as scalar control [13]- [15], direct torque control (DTC) [16], [17], model predictive control (MPC) [5], [9], and vector control [7], [8], [18]- [22]. Several scalar control methods have been proposed for the BDFIM system, such as open-loop control [13], closed-loop frequency control [14], and phase angle control [15].…”

mentioning

confidence: 99%

“…However, the unmatched model parameters will lead to inaccurate prediction of the motor behavior and deteriorate the performance and stability of the MPC method. The vector control methods based on different flux orientation frames are proposed [8], [18]- [20], [22]. Wallace et al developed the dynamic vector model of the BDFIM with an arbitrary pole number referred to the rotor's shaft position [24].…”

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confidence: 99%

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A Cascade PI-SMC Method for Matrix Converter-Fed BDFIM Drives

Wang

Chen

Zhao

et al. 2021

IEEE Trans. Transp. Electrific.

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This paper proposes a cascade proportional-integral second-order sliding mode control (PI-SMC) method for matrix converter-fed brushless doubly-fed induction machine (BDFIM). The PI-SMC method consists of a PI speed controller with an inner-loop second-order SMC. The PI controller provides a reference to the inner-loop second-order SMC with constraints according to the system requirements in terms of maximum current and speed. As the discontinuous sign function in the traditional SMC is replaced by the continuous super-twisting function, the chattering problem is eliminated for inner-loop second-order SMC. Moreover, the inner-loop second-order SMC has robustness and interference immunity against non-linear disturbances of the BDFIM. Simulation and Experimental results demonstrate the excellent robust tracking performance of the proposed PI-SMC method.

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An MRAS Speed Observer Based on Control Winding Flux for Sensorless Control of Stand-Alone BDFIGs

Cited by 19 publications

References 20 publications

Recent Advances of Control Technologies for Brushless Doubly-Fed Generators

Recent Advances of Control Technologies for Brushless Doubly-Fed Generators

Indirect Vector-Controlled Brushless Doubly-Fed Twin-Stator Induction Generator for Wind Energy Conversion Application

A Cascade PI-SMC Method for Matrix Converter-Fed BDFIM Drives

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