Small-signal Modeling and Modal Analysis of Wind Turbine Based on Three-mass Shaft Model

Zhang, Yanchi; Xie, Da; Feng, Junqi

doi:10.1080/15325008.2014.890967

Cited by 28 publications

(30 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The parameters of the drive train, generator and transmission line are the same with those shown in [17], and the parameters of the VSC are listed in the Appendix. ω ∆ , so they are mainly affected by the torsion angle and speed of the low-speed shaft.…”

Section: Modal Analysismentioning

confidence: 99%

“…The transmission is equivalent to a RLC line model, which is modelled the same way shown in Reference [17]. Then the standard state space equation can be written as…”

Section: Transmission Line Modelmentioning

confidence: 99%

“…Also, which parts of the wind power system and to what extent will the different system parameters influence the dynamitic character of the mechanical system are unrevealed. In order to exactly analyze the torsional vibration characteristics of the mechanical system of DFIG, a three-mass shaft model, which consists of blades, a gearbox, a low speed shaft, a high speed shaft and an induction generator rotor in [17] is adopted. The small signal model of the voltage source converter (VSC) is developed, where the three subsystems, including a rotor side converter (RSC), a grid side converter (GSC) and a DC-link are modelled respectively.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Torsional vibration characteristic study of the grid-connected DFIG wind turbine

Xie

et al. 2017

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

View full text Add to dashboard Cite

Abstract. This paper studies the torsional vibration characteristics of the grid-connected doubly-fed induction generator (DFIG) wind turbine by small signal analysis method. Firstly a detailed small-signal stability union model of the grid-connected DFIG wind turbine is developed, including the mechanical system and electrical system. To study the dynamic characteristic of the blade, gearbox, low speed and high speed shafts, a three mass shaft model for the mechanical system is adopted. At the same time, small signal models of DFIG, the voltage source converter (VSC) and the transmission line of the electrical system are developed respectively. Then, through calculating the eigenvalues of the state matrix A and the corresponding participation factors, the modal analysis is conducted in the shaft torsional vibration issues. And the impact of the system parameters including the series compensation capacitor, the flat-wave reactor, the PI parameters, especially the speed controller of generator rotor on shaft torsional vibration are discussed. The results show that the speed controller strengthens association between the mechanical system and the electrical system, and also produces a low-frequency oscillation mode.

show abstract

Section: Modal Analysismentioning

confidence: 99%

“…The transmission is equivalent to a RLC line model, which is modelled the same way shown in Reference [17]. Then the standard state space equation can be written as…”

Section: Transmission Line Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Torsional vibration characteristic study of the grid-connected DFIG wind turbine

Xie

et al. 2017

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here, , so they are mainly affected by transmission line inductance and series compensation capacitor. 3,4 λ and 5,6 λ are also associated with 3 x ∆ to certain degree (with participation factors 0.0025 and 0.0018 respectively), which is the state variable of the DC link. Thus, 3,4 λ and 5,6 λ are electrical oscillation modes.…”

Section: Eigenvalue Analysismentioning

confidence: 99%

“…For grid-connected WTGs, torsional vibration of the mechanical systems can be excited by grid faults. The vibration may lead to shaft faults if the mechanical damping of wind turbines cannot compensate the negative damping of electrical systems [6]. In [7], a lumped mass model of a FSIG is developed and the simulation results showed that the FSIG system is excited by wind speed and gear mesh stiffness fluctuations, which can reduce the lifespan of wind turbines.…”

Section: Introductionmentioning

confidence: 99%

Small-signal Modeling and Modal Analysis of a PMSG-based Wind Power System

Wu¹,

Xie²,

Zhao³

et al. 2017

dtmse

Self Cite

View full text Add to dashboard Cite

A unified small-signal model of a wind power system is developed in this paper to study the small-signal stability of permanent magnet synchronous generator (PMSG)-based wind turbines connected to the power grid. The model is composed of both mechanical system and electrical system. A two-mass shaft model for the mechanical system is provided to analyze the dynamic and steady state behaviors. Meanwhile, PMSG, converter system and transmission line of the electrical system are modeled separately to build a unified small-signal model of the PMSG-based wind power system. Then, based on the unified small-signal model, eigenvalue analysis for the whole system is presented, which helps discover the relation between different modes and state variables. Cases involving various series compensation degrees, length of transmission lines and the stiffness of shafts are carried out to study how the modes are influenced by relevant variables specifically. The relatively independent modules of the unified small-signal model allow for easy expansion and modification for various research purposes. The simulation results show that the mechanical and electrical systems of PMSG-based wind turbines are independent to some degree with the implementation of a full-scale converter system.

show abstract

Torsional vibration characteristics analysis of DFIG‐based wind farm and its equivalent model

Xie

Sun

Yi-chen

et al. 2017

IEEJ Transactions Elec Engng

Self Cite

View full text Add to dashboard Cite

As large‐scale wind farms (WFs) are integrated with the power grid, the interaction between the WF and the grid may excite torsional vibration of the shaft of the wind turbine. To study the shaft's torsional vibration characteristics of a doubly fed induction generator (DFIG)‐based WF, a detailed small‐signal model of DFIG is established first. Then the small‐signal model for a WF composed of multiple DFIGs is developed on the basis of the single‐machine model. Modal analysis is employed to investigate the torsional vibration characteristics of a WF made up of several identical DFIGs, whose accuracy is also demonstrated through time‐domain simulation. To simplify the torsional vibration analysis for the DFIG‐based WF, a reduced‐order equivalent model is proposed. The results obtained from modal analysis show that the equivalent model not only precisely maintains all the torsional vibration modes of the original small‐signal model but also greatly reduces the computation complexity. With the equivalent model, the ‘curse of dimensionality’ problem is solved in torsional vibration analysis for large WFs, which is of great help in the design of further damping schemes. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

show abstract

Small-signal Modeling and Modal Analysis of Wind Turbine Based on Three-mass Shaft Model

Cited by 28 publications

References 14 publications

Torsional vibration characteristic study of the grid-connected DFIG wind turbine

Torsional vibration characteristic study of the grid-connected DFIG wind turbine

Small-signal Modeling and Modal Analysis of a PMSG-based Wind Power System

Torsional vibration characteristics analysis of DFIG‐based wind farm and its equivalent model

Contact Info

Product

Resources

About