Active Damping for PMSG-Based WECS With DC-Link Current Estimation

Geng, Hua; Xu, Dewei; Wu, Bin; Yang, Geng

doi:10.1109/tie.2010.2040568

Cited by 126 publications

(75 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A two-mass The inputs of the mechanical model are the reaction torque of the generator s 0 aero and the aerodynamic torque s aero . The dynamics of the two-mass model referred to the LSS can be described by the following linear differential equations [15][16][17],…”

Section: Mechanical Modelmentioning

confidence: 99%

Inertia response from full-power converter-based permanent magnet wind generators

Licari

Ekanayake

Moore

2013

J. Mod. Power Syst. Clean Energy

View full text Add to dashboard Cite

With a high penetration of wind turbines, the proportion of synchronous generation in the power system will be reduced at times, thus creating operating difficulties especially during frequency events. Therefore, it is anticipated that many grid operators will demand inertia response from wind turbines. In this article, different ways for emulating inertia response in full-rated power converter-based wind turbines equipped with permanent magnet synchronous generators are considered. Supplementary control signals are added to the controller of the wind turbine to extract stored energy from the rotating mass and DC-link capacitors. Simulations in MATLAB/Simulink show that the inertia response is improved by adding a term proportional to the rate of change of frequency and by extracting the stored energy in the DC-link capacitors.

show abstract

Section: Mechanical Modelmentioning

confidence: 99%

Inertia response from full-power converter-based permanent magnet wind generators

Licari

Ekanayake

Moore

2013

J. Mod. Power Syst. Clean Energy

View full text Add to dashboard Cite

show abstract

“…For example, in [16], a mechanical method using springs and dampers is employed to give the PMSG wind turbine a damping capability. On the other hand, [19] investigates an active damping strategy based on DC-link current estimation to damp torsional oscillations. The researchers focus on improving damping of oscillations through the power electronic converters using proportional-integral (PI) controllers [14].…”

Section: Introductionmentioning

confidence: 99%

Damping Local Oscillations of a Direct- Drive PMSG Wind Turbine

Legesse¹,

Saha²,

Carpanen³

2017

IJET

View full text Add to dashboard Cite

Abstract-Damping local oscillations is vital in the operation of a direct-drive permanent magnet synchronous generator wind turbine as well as its integration into a grid. Currently, these oscillations are controlled by proportional-integral controllers. This paper proposes the inclusion of virtual resistors to improve the performance of the wind turbine further. Simulation results show that virtual resistors, connected in series to stator windings, have a positive impact on the damping of local oscillations. They significantly reduce the rise and settling times of the rotor speed, electromagnetic torque, active power and reactive power and increase the corresponding damping ratios. In contrast, the ones, connected in parallel to stator windings, have a negative impact on the damping of local oscillations. This indicates that an appropriate selection and connection of virtual resistors improves the dynamic and small-signal performances of a PMSG wind turbine.Keyword-Damping local oscillations, permanent magnet synchronous generator, wind turbine, dynamic performance, small-signal stability, virtual resistors I. INTRODUCTION For the past two centuries, rapidly growing populations and modernization trends have accelerated the demand for energy. Today, the world heavily depends on fossil fuels such as oil, coal, and natural gas for its increasing energy requirements. However, this fossil-fuelled economy is facing challenges including depletion of reserves, global warming, security concerns, and rising cost [1]. In tackling these challenges, much attention is given to the development of renewable energy, among which harnessing wind energy is the cheapest alternative [2,3].Three types of wind energy technologies-squirrel-cage induction generator (SCIG), doubly fed induction generator (DFIG) and permanent magnet synchronous generator (PMSG) wind turbines-are widely adopted in the wind industry. Compared to SCIG, DFIG and PMSG are popular for two reasons [4]. Firstly, they offer the opportunity to operate the machine at maximum power for various wind speeds, and secondly, they have less mechanical stress on their shafts. These days, the popular variable-speed wind turbines employed in large-scale wind parks are DFIG wind turbines [5]. Nevertheless, recently, direct-drive PMSG wind turbines are gaining momentum among researchers, engineers and turbine manufacturers for their high efficiency, low power loss and smaller size [6 -11].The integration of wind power into grids is rapidly growing. In some European countries, the level of penetration has reached as high as 21% [12]. However, due to this high penetration and the intermittent nature of the wind, there are concerns such as generation reserve, power system stability and reliability [13]. Furthermore, wind turbines themselves have stability problems, which surely challenge transmission system operators. In large grids, the ability of both local and system-wide power system oscillation damping plays a crucial role [14].A range of efforts have been made to damp local ...

show abstract

“…In particular, the application of direct-driven Permanent-Magnet Synchronous Generation (PMSG) WPGS is a trend in the development of WPGS applications, especially in offshore and home scale WPGSs [4]- [9]. As a result, in order to decouple the speed of a PMSG from a grid, especially when all of the energy should go through the grid interface system [10], [11], the demand for power electronic devices with a higher rating at a lower cost has risen, as shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Control and Analysis of Vienna Rectifier Used as the Generator-Side Converter of PMSG-based Wind Power Generation Systems

Zhao¹,

Zheng²,

Li³

et al. 2017

Journal of Power Electronics

View full text Add to dashboard Cite

Permanent-Magnet Synchronous Generators (PMSGs) are used widely in Wind Power Generation Systems (WPGSs), and the Vienna rectifier was recently proposed to be used as the generator-side converter to rectify the AC output voltage in PMSG-based WPGS. Compared to conventional six-switch two-level PWM (2L-PWM) converters, the Vienna rectifier has several advantages, such as higher efficiency, improved total harmonic distortion, etc. The motivation behind this paper is to verify the performance of direct-driven PMSG wind turbine system based-Vienna rectifier by using a simulated direct-driven PMSG WPGS. In addition, for the purpose of reducing the reactive power loss of PMSGs, this paper proposes an induced voltage sensing scheme which can make the stator current maintain accurate synchronization with the induced voltage. Meanwhile, considering the Neutral-Point Voltage (NPV) variation in the DC-side of the Vienna rectifier, a NPV balancing control strategy is added to the control system. In addition, both the effectiveness of the proposed method and the performance of the direct-driven PMSG based-Vienna rectifier are verified by simulation and experimental results.

show abstract

Active Damping for PMSG-Based WECS With DC-Link Current Estimation

Cited by 126 publications

References 27 publications

Inertia response from full-power converter-based permanent magnet wind generators

Inertia response from full-power converter-based permanent magnet wind generators

Damping Local Oscillations of a Direct- Drive PMSG Wind Turbine

Control and Analysis of Vienna Rectifier Used as the Generator-Side Converter of PMSG-based Wind Power Generation Systems

Contact Info

Product

Resources

About