Inertial response characteristics analysis and optimisation of PMSG‐based VSG‐controlled WECS

Xi, Junhua; Geng, Hua; Ma, Shaohua; Chi, Yongning; Yang, Geng

doi:10.1049/iet-rpg.2018.5250

Cited by 30 publications

(13 citation statements)

References 26 publications

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“…The other is to release the energy with the performance similar to conventional SG [17]- [20], e.g., the control scheme of virtual SG (VSG). The control scheme of VSG studied in this paper for the characteristics is similar to SG [17]- [19].…”

Section: Introductionmentioning

confidence: 99%

Decoupling Scheme for Virtual Synchronous Generator Controlled Wind Farms Participating in Inertial Response

Geng

Zou³

2021

Journal of Modern Power Systems and Clean Energy

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In this paper, the dynamic coupling between the wind turbine rotor speed recovery (WTRSR) and inertial response of the conventional virtual synchronous generator (VSG) controlled wind farms (WFs) is analyzed. Three distinguishing features are revealed. Firstly, the inertial response characteristics of VSG controlled WFs (VSG-WFs) are impaired by the dynamic coupling. Secondly, when the influence of WTRSR is dominant, the inertial response characteristics of VSG-WFs are even worse than the condition under which WFs do not participate in the response of grid frequency. Thirdly, this phenomenon cannot be eliminated by only enlarging the inertia parameter of VSG-WFs, because the influence of WTRSR would also increase with the enhancement of inertial response. A decoupling scheme to eliminate the negative influence is then proposed in this paper. By starting the WTRSR process after inertial response period, the dynamic coupling is eliminated and the inertial response characteristics of WFs are improved. Finally, the effectiveness of the analysis and the proposed scheme are verified by simulation results.

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Section: Introductionmentioning

confidence: 99%

Decoupling Scheme for Virtual Synchronous Generator Controlled Wind Farms Participating in Inertial Response

Geng

Zou³

2021

Journal of Modern Power Systems and Clean Energy

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“…At the same time, it suppresses the negative sequence current component. Besides in [20], a generalized optimal wind energy conversion system with a VSG strategy was suggested, which could improve the frequency support capability. However, the VSG strategy mentioned connects to the power grid through a PWM control, which requires PWM modulation and PI control.…”

Section: Introductionmentioning

confidence: 99%

Model Predictive Virtual Synchronous Control of Permanent Magnet Synchronous Generator-Based Wind Power System

et al. 2020

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As much wind power is integrated into the power grid through power electronic equipment, the use of wind power is increased rapidly. Wind power system makes the power grid lack inertia and damping, thereby reducing power grid stability; in severe cases, it may even be disconnected. virtual synchronous generator (VSG) has been put forward to enhance the anti-disturbance performance of power grid. However, conventional VSG adopts an outer power loop and inner-current loop control. The inner-current loop control needs a pulse width modulation (PWM) module and proportion integration (PI) parameter settings. In order to reduce the parameter settings and simplify control structures, in this study, model predictive control (MPC) is used instead of inner-current loop control. At the same time—for the overall stability and control flexibility of the back-to-back system—we further propose to use outer-voltage loop control (OVLC) and MPC to stabilize direct current (DC) voltage on the machine-side and to employ model predictive virtual synchronous controls to provide inertia and damping for the power grid. The proposed control method was simulated in Matlab/Simulink (MathWorks, Massachusetts, MA, 2016) and verified by experimental results.

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“…The improvement in the frequency regulation strategies for PMSG based wind energy conversion systems have been discussed in [16]. Moreover, the control analysis based on inertial response characteristics for grid-tied and standalone PMSG systems has been studied in [17,18]. A diesel-engine driven PMSG-based standalone system has been portrayed in [19].…”

Section: Introductionmentioning

confidence: 99%

Development and implementation of control of stand‐alone PMSG‐based distributed energy system with variation in input and output parameters

Mishra

Banerjee

Sekhar

et al. 2019

IET Electric Power Applications

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This work develops a combined control for a stand-alone permanent magnet synchronous generator (PMSG) working with variable source and output demand. The power circuit consists of one PMSG, driven by uncontrolled prime mover supplying load through two voltage source converter (VSC) connected through a dc link capacitor. The main objective of the control is to supply load at constant voltage and frequency, even with variation in source speed and power, and also to accommodate the change in load transients. The generator side converter control is developed in rotor flux oriented synchronously rotating reference frame, to keep the dc link voltage, of the back to back VSC, constant. The load side converter control is also developed in the synchronously rotating reference frame to supply load at constant voltage and frequency. The developed combined control strategy is implemented in MATLAB/SIMULINK environment and found to be successful under all considered operating conditions. The theoretical findings are experimentally verified with a real-time prototype. * reference d, q-axis load voltage

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Inertial response characteristics analysis and optimisation of PMSG‐based VSG‐controlled WECS

Cited by 30 publications

References 26 publications

Decoupling Scheme for Virtual Synchronous Generator Controlled Wind Farms Participating in Inertial Response

Decoupling Scheme for Virtual Synchronous Generator Controlled Wind Farms Participating in Inertial Response

Model Predictive Virtual Synchronous Control of Permanent Magnet Synchronous Generator-Based Wind Power System

Development and implementation of control of stand‐alone PMSG‐based distributed energy system with variation in input and output parameters

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