Resonance phenomena analysis in induction generators

In this paper, a direct power control (DPC) technique is proposed for matrix converter-fed grid-connected doubly fed induction generators (DFIGs). In contrast to what has been investigated in the past for direct torque control (DTC) or DPC of matrix converter-fed DFIGs, the active and reactive powers are regulated in a fixed switching frequency using indirect space vector modulation (ISVM) technique. Hence, designing input filters for matrix converters (MCs) becomes convenient. In addition, the reactive component of input side of MC is controlled which leads to reduction of distortion in grid current waveform. Also, an extensive discussion is addressed for nonlinear voltage errors of MC that may cause inaccurate power control. Simulation results done in MATLAB/Simulink show the effectiveness of the proposed method.

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Application of a Specialized Passive Filter to Correct the Frequency Response of the Supply Network in order to Eliminate the Negative Impact of Resonance Phenomena

2020 Russian Workshop on Power Engineering and Automation of Metallurgy Industry: Research & Practice (PEAMI) ◽

10.1109/peami49900.2020.9234378 ◽

2020 ◽

Author(s):

A. A. Nikolaev ◽

M. Yu. Afanasev ◽

M. V. Bulanov

Keyword(s):

Frequency Response ◽

Negative Impact ◽

Supply Network ◽

Passive Filter ◽

Resonance Phenomena

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Doubly fed induction generators to enhance inter-area damping based on a Robust controller: $${{\varvec{H}}}_{2}/{{\varvec{H}}}_{\infty }$$ Control

SN Applied Sciences ◽

10.1007/s42452-021-04150-1 ◽

2021 ◽

Vol 3 (1) ◽

Author(s):

Ali Goodarzi ◽

Ali Mohammad Ranjbar ◽

Moslem Dehghani ◽

Mina GhasemiGarpachi ◽

Mohammad Ghiasi

Keyword(s):

Working Conditions ◽

Reactive Power ◽

Wind Farms ◽

System Stability ◽

Pole Placement ◽

Linear Matrix ◽

Robust Controller ◽

Induction Generators ◽

Doubly Fed ◽

Oscillation Damping

AbstractIn this study, an auxiliary damping controller based on a robust controller considering the active and reactive power control loops for a doubly-fed induction generator for wind farms is proposed. The presented controller is able to improve the inter-area oscillation damping. In addition, the proposed controller applies only one accessible local signal as the input; however, it can improve the inter-area oscillation damping and, consequently the system stability for the various working conditions and uncertainties. The oscillatory modes of the system are appointed using the linear analysis. Then, the controller’s parameters are determined using the robust control approaches ($${H}_{\infty }/{H}_{2})$$ H ∞ / H 2 ) with the pole placement and linear matrix inequality method. The results of the modal analysis and time-domain simulations confirm that the controller develops the inter-area oscillation damping under the various working conditions and uncertainties.

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