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Research on finite time control strategy of pre-synchronization VSG based on angular frequency feedback
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In order to improve the grid-connected ability and response speed of
virtual synchronous generator (VSG), a finite-time control strategy of
pre-synchronous VSG based on angular frequency feedback is proposed in
this paper. Firstly, the basic principle of VSG control strategy is
analyzed, and the voltage amplitude pre-synchronization module and the
voltage phase pre-synchronization module are added on the basis of
traditional VSG control, so as to realize the pre-synchronization
tracking of power grid information. Then, based on the principle of
finite-time stability, a finite-time controller is designed based on
angular frequency feedback, and the finite-time stability of the control
strategy is verified in theory to ensure the system has a faster
response speed. Finally, the simulation results show that the designed
control strategy can make the output voltage of VSG track the power grid
information quickly, and effectively improve the tracking ability of
active and reactive power and the stability of frequency and phase
angle.
Title: Research on finite time control strategy of pre-synchronization VSG based on angular frequency feedback
Description:
In order to improve the grid-connected ability and response speed of
virtual synchronous generator (VSG), a finite-time control strategy of
pre-synchronous VSG based on angular frequency feedback is proposed in
this paper.
Firstly, the basic principle of VSG control strategy is
analyzed, and the voltage amplitude pre-synchronization module and the
voltage phase pre-synchronization module are added on the basis of
traditional VSG control, so as to realize the pre-synchronization
tracking of power grid information.
Then, based on the principle of
finite-time stability, a finite-time controller is designed based on
angular frequency feedback, and the finite-time stability of the control
strategy is verified in theory to ensure the system has a faster
response speed.
Finally, the simulation results show that the designed
control strategy can make the output voltage of VSG track the power grid
information quickly, and effectively improve the tracking ability of
active and reactive power and the stability of frequency and phase
angle.
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