A Reference-Feed-Forward-Based Damping Method for Virtual Synchronous Generator Control

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The virtual synchronous generator (VSG) control has been extensively applied for realizing grid-friendly interconnections of power converters. Nevertheless, due to the direct shaft dynamics emulation, low-frequency power oscillations may be introduced in the case of limited damping effects. To solve this issue, power control law modifications have been proposed based on the feedback control theory. Although power oscillations can be suppressed to an acceptable level, the original inertial response of VSG will be significantly degraded. This paper proposes a new damping method based on the reference feed forward (RFF) control. The proposed method is able to effectively attenuate poorly-damped power oscillations in VSG-controlled converters without affecting the original inertial response. Theoretical analysis and effectiveness of the proposed damping method have been validated by both EMT simulations and experiments.

TidsskriftIEEE Transactions on Power Electronics
Udgave nummer7
Sider (fra-til)7566-7571
Antal sider6
StatusUdgivet - 1 jul. 2022

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