A Fault-Tolerant Direct Controlled PMSG Drive for Wind Energy Conversion Systems

Freire, Nuno M. A.; Cardoso, António J. Marques

doi:10.1109/tie.2013.2251734

Cited by 102 publications

(54 citation statements)

References 45 publications

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“…In addition, the 4S3P power topology could be achieved from standard three-phase topology, which made it very attractive in fault-tolerant control to solve the open/short circuit fault of standard inverter IGBTs [6,7]. The 4S3P inverter conception applied to the fault-tolerant control is very valuable in some critical applications such as wind energy conversion systems [8] and alternating current (AC) motor drives [9].…”

Section: Introductionmentioning

confidence: 99%

Four-Switch Three-Phase PMSM Converter with Output Voltage Balance and DC-Link Voltage Offset Suppression

et al. 2017

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High power quality, efficiency, complexity, size, cost effectiveness and switching losses of the direct current to alternating current (DC-AC) conversion system are crucial aspects in industrial applications. Therefore, the four-switch three-phase inverter (4S3P) has been proposed as an innovative inverter design. However, this topology has been known to have many performance limitations in the low-frequency region, because of the generation of an unbalanced voltage leading to an unbalanced current due to the fluctuation and offset of the centre tap voltage of the DC-link capacitors. Those drawbacks are investigated and solved in this paper in order to provide pure sinusoidal output voltages. The generated output voltages are controlled using proportional-integral (PI) controllers to follow the desired voltages. Furthermore, the DC-link capacitor voltage offset is mitigated by subtracting the direct component from the control reference voltage using low pass filters, where this direct voltage component provides the direct current component which leads to DC-link capacitor voltage divergence. A simulation model and experimental setup are used to validate the proposed concept. Many simulation and experimental results are carried out to show the effectiveness of the proposed control scheme.

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Section: Introductionmentioning

confidence: 99%

Four-Switch Three-Phase PMSM Converter with Output Voltage Balance and DC-Link Voltage Offset Suppression

et al. 2017

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“…In some national grid codes [5], the wind turbines should stay connected to the grid under grid fault conditions to avoid power system stability problems. For PMSG-WTs, fault-tolerance capability in wind power transmission and power converters becomes more and more important in order to increase their reliability and availability [6], especially when asymmetrical faults happen. During asymmetrical faults in a grid, on the one hand, grid-side active power injected into the grid is sharply reduced and generator-side active power delivered by the PMSG basically remains unchanged, which would cause the DC voltage to swell seriously; on the other hand, the unbalanced three-phase voltages during asymmetrical faults would result in the continuous oscillation of transmission power and DC voltage.…”

Section: Introductionmentioning

confidence: 99%

An Optimal Integrated Control Scheme for Permanent Magnet Synchronous Generator-Based Wind Turbines under Asymmetrical Grid Fault Conditions

Wang

Liu

2016

Energies

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Abstract:In recent years, the increasing penetration level of wind energy into power systems has brought new issues and challenges. One of the main concerns is the issue of dynamic response capability during outer disturbance conditions, especially the fault-tolerance capability during asymmetrical faults. In order to improve the fault-tolerance and dynamic response capability under asymmetrical grid fault conditions, an optimal integrated control scheme for the grid-side voltage-source converter (VSC) of direct-driven permanent magnet synchronous generator (PMSG)-based wind turbine systems is proposed in this paper. The optimal control strategy includes a main controller and an additional controller. In the main controller, a double-loop controller based on differential flatness-based theory is designed for grid-side VSC. Two parts are involved in the design process of the flatness-based controller: the reference trajectories generation of flatness output and the implementation of the controller. In the additional control aspect, an auxiliary second harmonic compensation control loop based on an improved calculation method for grid-side instantaneous transmission power is designed by the quasi proportional resonant (Quasi-PR) control principle, which is able to simultaneously restrain the second harmonic components in active power and reactive power injected into the grid without the respective calculation for current control references. Moreover, to reduce the DC-link overvoltage during grid faults, the mathematical model of DC-link voltage is analyzed and a feedforward modified control factor is added to the traditional DC voltage control loop in grid-side VSC. The effectiveness of the optimal control scheme is verified in PSCAD/EMTDC simulation software.

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“…This has attracted a lot of research interests. In [16], the transient performance of a fault-tolerant PWM rectifier at the topology changing interval is fully investigated. It is concluded that the transient performance is strongly dependent on the initial DC-link voltage, the response time after fault detection, and the controller parameters.…”

Section: Introductionmentioning

confidence: 99%

“…The SVM schemes discussed in [10]- [18] are classified into three major categories: SVM schemes with the zero vectors synthesized by two short vectors (SVSVM) [11]- [13], [16]- [18], SVM schemes with the zero vectors synthesized by two long vectors (LVSVM) [14], [15] and SVM schemes with the reference vector synthesized by the nearest three vectors (NTSVM) [10]. The essential difference between these three SVM strategies is the zero vector synthesis method.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis and Comparison of Post-Fault PWM Rectifiers Using Various Space Vector Modulation Methods

Zhu¹,

Zeng²,

Zhao³

2016

Journal of Power Electronics

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In this paper, some crucial performance characteristics related to the operational reliability of the post-fault Pulse Width Modulated (PWM) rectifiers, such as line current harmonic distortion, Common Mode Voltage (CMV), and current stress on the capacitors, are fully investigated. The aforementioned performance characteristics of post-fault rectifiers are highly dependent on the utilized space vector modulation (SVM) schemes, which are also examined. Detailed analyses of the three most commonly used SVM schemes for post-fault PWM rectifiers are provided, revealing the major differences in terms of the zero vector synthesis approaches. To compare the performances of the three SVM schemes, the operating principles of a post-fault rectifier are presented with various SVM schemes. Using analytical and numerical methods in the time domain, the performances of the line current distortion, common mode voltage and capacitor current are evaluated and compared for each SVM scheme. The proposed analysis demonstrates that the zero vector synthesis approaches of the considered methods have significant impacts on the performance characteristics of rectifiers. In addition, the advantages and disadvantages of the proposed SVM schemes are discussed. The experimental results verify the effectiveness and validity of the proposed analysis.

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A Fault-Tolerant Direct Controlled PMSG Drive for Wind Energy Conversion Systems

Cited by 102 publications

References 45 publications

Four-Switch Three-Phase PMSM Converter with Output Voltage Balance and DC-Link Voltage Offset Suppression

Four-Switch Three-Phase PMSM Converter with Output Voltage Balance and DC-Link Voltage Offset Suppression

An Optimal Integrated Control Scheme for Permanent Magnet Synchronous Generator-Based Wind Turbines under Asymmetrical Grid Fault Conditions

Performance Analysis and Comparison of Post-Fault PWM Rectifiers Using Various Space Vector Modulation Methods

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