A novel virtual synchronous generator control strategy based on improved swing equation emulating and power decoupling method

Li, Mingxuan; Wang, Yue; Xu, Ningyi; Liu, Yonghui; Wang, Wenti; Wang, Hao; Liu, Wanjun

doi:10.1109/ecce.2016.7854751

Cited by 31 publications

(17 citation statements)

References 11 publications

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“…Several studies have been reported in the literature of the modelling behaviour of SG in power electronics-based generators [8][9][10][11][12][13][14][15][16][17]. Reference [8] utilizes the concept of power hardware-in-the-loop for emulating a synchronous generator in aircraft power systems applications.…”

Section: Introductionmentioning

confidence: 99%

“…Reference [8] utilizes the concept of power hardware-in-the-loop for emulating a synchronous generator in aircraft power systems applications. A virtual synchronous generator-based control technique is presented in [12], in which the differences between inverters and real synchronous generators are considered by emulating and analysing swing and power equations [12].…”

Section: Introductionmentioning

confidence: 99%

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Virtual Inertia and Mechanical Power-Based Control Strategy to Provide Stable Grid Operation under High Renewables Penetration

et al. 2019

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This paper presents a virtual inertia and mechanical power-based control strategy to provide a stable operation of the power grid under high penetration of renewable energy sources (RESs). The proposed control technique is based on a new active and reactive power-based dynamic model with the permanent magnet synchronous generator (PMSG) swing equation, in which all PMSG features i.e., inertia and mechanical power are embedded within the controller as the main contribution of this paper. To present an accurate analysis of the virtual PMSG-based parameters, the desired zero dynamics of the grid angular frequency are considered to evaluate the effects of virtual mechanical power (VMP) on the active and reactive power sharing, as well as the investigation of virtual inertia variations for the grid angular frequency responses. Moreover, by considering various active power errors and virtual inertia, the impacts of active power error on reactive power in the proposed control technique, are precisely assessed. Simulation results are employed in Matlab/Simulink software to verify the stabilizing abilities of the proposed control technique.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Virtual Inertia and Mechanical Power-Based Control Strategy to Provide Stable Grid Operation under High Renewables Penetration

et al. 2019

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“…It has been proved that VSG control not only inherits the advantages of droop control, but also has larger inertia and better frequency stability performance than droop control [10]. Large amounts of investigations related to VSG can be found in [11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Effects analysis of excitation circuit on power control for VSG: a design‐oriented study

Yang

Han

et al. 2019

IET Renewable Power Generation

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Reactive power control loop (RPCL) in virtual synchronous generator (VSG) plays the role of excitation circuit in conventional SG. The control strategy improvement or parameters configuration method of RPCL is always the emphasis of analysis. However, the impacts of RPCL on VSG system performance are usually overlooked. On the basis of that, this study aims to investigate the effects of RPCL on power control performance. First, a simplified SG model is established and implemented to VSG. Then, VSG system modelling with state equations in power control time scale is elaborated. The excitation current in the modelling is regarded as one crucial state variable to identify the effects of the excitation circuit on VSG system. Eigenvalue locus analysis and eigenproperties analysis reveal how the excitation circuit affects power oscillation damping performance and even results in power coupling issue of power control. The effects of operating points on system power control are also taken into account. Finally, the experimental results are given to verify the theoretical analysis.

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“…Several studies have been reported in the literature regarding control of power converters under large-scale integration of RERs into the power grid [27][28][29][30][31][32][33][34][35][36][37][38][39]. In [27], a virtual synchronous generator (VSG) was proposed to make an emulation strategy [28,29] for the improvement of the swing equation damping power. The proposed strategy does not require a phase-locked-loop (PLL) and can remove the effects of the droop coefficient due to the traditional constant damping factor.…”

Section: Introductionmentioning

confidence: 99%

Synchronous Resonant Control Technique to Address Power Grid Instability Problems Due to High Renewables Penetration

et al. 2018

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This paper presents a synchronous resonant control strategy based on the inherent characteristics of permanent magnet synchronous generators (PMSG) for the control of power converters to provide stable operating conditions for the power grid under high penetration of renewable energy resources (RERs). The proposed control technique is based on the small signal linearization of a dynamic model with grid specifications, load-current-based voltages, and power converter currents. A combination of the linearized dynamic model with the PMSG swing equation and resonant controller leads to a control technique with synchronous features and appropriate inertia for the control of converter-based power generators. As the main contribution of this work, an extra functionality is proposed in the control loop of the proposed model to solve the inherent inconveniences of conventional synchronous generators. Also, a comprehensive collaboration between interfaced converter specifications and PMSG features is achieved as another contribution of the proposed control technique, and this can guarantee accurate performance under various conditions. A current perturbation curve is introduced to assess the variations of the grid frequency and voltage magnitude under operation of the interfaced converters controlled by the proposed control technique. Moreover, by taking into account the load-based voltages, the effects of the current perturbation components are investigated. The proposed model is simulated in MATLAB/Simulink environment to verify the high performance of the proposed control technique over the other existing control methods.

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A novel virtual synchronous generator control strategy based on improved swing equation emulating and power decoupling method

Cited by 31 publications

References 11 publications

Virtual Inertia and Mechanical Power-Based Control Strategy to Provide Stable Grid Operation under High Renewables Penetration

Virtual Inertia and Mechanical Power-Based Control Strategy to Provide Stable Grid Operation under High Renewables Penetration

Effects analysis of excitation circuit on power control for VSG: a design‐oriented study

Synchronous Resonant Control Technique to Address Power Grid Instability Problems Due to High Renewables Penetration

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