Calculation of current limiting reactance of hybrid SFCL for low voltage ride-through capability enhancement in DFIG wind farms

Romphochai, Sillawat; Hongesombut, Komsan

doi:10.3906/elk-1703-53

Cited by 3 publications

(1 citation statement)

References 18 publications

(21 reference statements)

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“…The doubly fed induction machines have greater interest in different applications as generators or motors. One of the applications of doubly fed induction machine as an efficient generator in a wind energy conversion system is presented (Ozsoy et al, 2016;Romphochai and Hongesombut, 2017;Fernandez et al, 2008;Hüseyin and Sünter, 2013;Elkholy et al, 2016). Because of their ability to generate power with constant stator frequency over a wide range of speeds in sub and super synchronous speeds.…”

Section: Introductionmentioning

confidence: 99%

Optimal energy saving of doubly fed induction motor based on scalar rotor voltage control and water cycle algorithm

Elkholy

Abdel-Kader

2019

COMPEL

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Purpose This paper aims to present an optimal variable speed drive of a doubly fed induction motor (DFIM) with minimum losses and reduced inverter capacity. The operation with minimum losses ensures that the DFIM develops the required load torque at desired speed with maximum energy saving. Moreover, the control of rotor voltage ensures the reduced inverter capacity. The water cycle algorithm (WCA) as one of meta-heuristic optimization techniques is used to estimate the optimal rotor voltages to drive the DFIM with minimum losses. The results of WCA are confirmed with other well-known and reliable optimization method such as particle swarm optimization along with classical method. Design/methodology/approach The DFIM is an efficient alternative solution of synchronous motor (SM) because of its speed is synchronized with both stator and rotor frequencies regardless the load torque. As a result, the speed of variable speed drive associated with DFIM can be controlled through a rotor inverter with reduced capacity rather than SM. The output voltage of rotor inverter is controlled to develop the demanded output power with minimum motor losses. Findings A complete DFIM drive model is developed under MATLAB/SIMULINK environment using d-q dynamic model to verify the strength and significance of the proposed controller. An experimental setup using a 300 W three-phase wound rotor induction motor is established to validate the mathematical models and theoretical results. The motor performances with proposed rotor voltage control (minimum losses) are compared with conventional method of constant voltage to frequency ratio (V/f constant). It is found that the proposed WCA based on controller achieves significant reductions in motor losses, input power and rotor inverter power. Originality/value The paper presents an efficient method to maximize the energy saving of DFIM with a reduced inverter capacity using WCA.

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Section: Introductionmentioning

confidence: 99%