Torque Ripple Reduction in a DFIG-DC System by Resonant Current Controllers

Iacchetti, Matteo F.; Marques, G.D.; Perini, R.

doi:10.1109/tpel.2014.2360211

Cited by 89 publications

(52 citation statements)

References 38 publications

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“…The first attempt to tackle the torque ripple in the DFIG-dc system was made in [17] using resonant controllers (RC) in the current control chain to improve the tracking of the instantaneous torque. Nian et al [18] envisaged the implementation of direct RC signal injection in the q-axis rotor voltage command in order to by-pass the current control chain.…”

Section: Introductionmentioning

confidence: 99%

Predictive Torque and Rotor Flux Control of a DFIG-DC System for Torque Ripple Compensation and Loss Minimization

Cruz

Marques

Goncalves

et al. 2018

IEEE Trans. Ind. Electron.

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Abstract-The severe torque ripple normally occurring in the DFIG-dc system can cause premature failure of mechanical components and shorten the life of the drive train. This paper addresses the torque ripple issue by proposing a predictive direct torque control strategy which delivers at the same time torque ripple suppression and minimization of losses. The existing control algorithms for torque ripple mitigation are mostly based on resonant controllers and repetitive control forcing the compensation signal either through the current chain or directly into the rotor voltage commands. All these techniques lead to structures with multiple controllers whose tuning is not straightforward. Furthermore, they are very sensitive to the operating frequency, making optimized operation with variable frequency highly challenging. Conversely, the proposed algorithm predicts directly the best rotor voltage space vector to minimize torque ripple and track a prescribed rotor flux amplitude to minimize losses, with no current control chain. As confirmed by simulations and experiments, the strategy allows large stator frequency variations as required by the optimal flux command for minimum losses, whilst ensuring effective torque ripple compensation.

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Section: Introductionmentioning

confidence: 99%

Predictive Torque and Rotor Flux Control of a DFIG-DC System for Torque Ripple Compensation and Loss Minimization

Cruz

Marques

Goncalves

et al. 2018

IEEE Trans. Ind. Electron.

Self Cite

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“…Compared with iterative controllers [16] and repetitive compensations [17], resonant controllers (RCs) have become one of the most popular periodic disturbance rejection methods due to their advantages of simplicity, relatively simple turning process and easy frequency adaptation [18][19][20][21][22][23][24][25]. RCs are widely used in power systems to suppress harmonic disturbances [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…In [18][19][20], RCs are used for current control in grid-connected converters. In [21], Energies 2018, 11, 32 3 of 19 the torque ripple is inhibited by multiple RCs in a doubly-fed induction generator-direct current (DFIG-dc) system and positive results have been obtained. However, RCs used in power systems are usually tuned to a single frequency and achieve excellent performance only in a narrow frequency range.…”

Section: Introductionmentioning

confidence: 99%

High-Precision Speed Control Based on Multiple Phase-Shift Resonant Controllers for Gimbal System in MSCMG

2018

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Abstract:The high precision speed control of gimbal servo system in magnetically suspended control moment gyro (MSCMG) suffers from periodic torque disturbances, which lead to periodic fluctuations in speed control. This paper proposes a novel multiple phase-shift resonant controller (MPRC) for a gimbal servo system to suppress the periodic torque ripples whose frequencies vary with the operational speed of the gimbal servo motor and high-speed motor. First, the periodic torque ripples caused by cogging torque, flux harmonics and the dynamic unbalance of the high speed rotor are analyzed. Second, the principle and structure of MPRC parallel with proportional integral (PI) controllers are discussed. The design and stability analysis of the proposed MPRC plus PI control scheme are given both for the current loop and speed loop. The closed-loop stability is ensured by adjusting the phase in the entire operational speed range. Finally, the effectiveness of the proposed control method is verified through simulation and experimental results.

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“…The stator frequency is regulated by an inner control method [7]. Torque ripple is reduced by resonant current controllers [8]. Operation and design issues are analyzed for a DFIG with a diode-based rectifier [9].…”

Section: Introductionmentioning

confidence: 99%

Optimized and coordinated model predictive control scheme for DFIGs with DC-based converter system

Yan

Zhang

et al. 2017

J. Mod. Power Syst. Clean Energy

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This paper proposes an optimized and coordinated model predictive control (MPC) scheme for doublyfed induction generators (DFIGs) with DC-based converter system to improve the efficiency and dynamic performance in DC grids. In this configuration, the stator and rotor of the DFIG are connected to the DC bus via voltage source converters, namely, a rotor side converter (RSC) and a stator side converter (SSC). Optimized trajectories for rotor flux and stator current are proposed to minimize Joule losses of the DFIG, which is particularly advantageous at low and moderate torque. The coordinated MPC scheme is applied to overcome the weaknesses of the field-oriented control technique in the rotor flux-oriented frame, which makes the rotor flux stable and the stator current track its reference closely and quickly. Lastly, simulations and experiments are carried out to validate the feasibility of the control scheme and to analyze the steady-state and dynamic performance of the DFIG.

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Torque Ripple Reduction in a DFIG-DC System by Resonant Current Controllers

Cited by 89 publications

References 38 publications

Predictive Torque and Rotor Flux Control of a DFIG-DC System for Torque Ripple Compensation and Loss Minimization

Predictive Torque and Rotor Flux Control of a DFIG-DC System for Torque Ripple Compensation and Loss Minimization

High-Precision Speed Control Based on Multiple Phase-Shift Resonant Controllers for Gimbal System in MSCMG

Optimized and coordinated model predictive control scheme for DFIGs with DC-based converter system

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