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| Content Provider | IET Digital Library |
|---|---|
| Author | Yang, Dongsheng Wu, Heng Wang, Xiongfei Blaabjerg, Frede |
| Abstract | The virtual synchronous generator (VSG) is an attractive interfacing technique for high-penetration renewable generation. By incorporating the inertia control, the grid-connected voltage-source converter can behave in a similar way with the SGs, which is helpful to enhance the stability of the power system. However, it is reported that the synchronous frequency resonance (SFR) can be aroused in the VSG due to the resonance peaks in the power control loops at the fundamental frequency. By modelling the power control loop in the dq domain, the mechanism underlying the SFR is studied. It reveals the frequency shift of the grid impedance in dq frame is the origin of SFR. Moreover, the phase-amplitude cross-regulation scheme is proposed to suppress the SFR. In this way, the resonance peaks in the power control loops are completely removed, and the coupling effects between the active power and reactive power loops are also eliminated. Therefore, superior power control performances can be achieved. Simulation results verify the effectiveness of the theoretical analysis and both dynamic performance and stability of the power loops are greatly improved by the proposed cross-regulation scheme. |
| Starting Page | 2574 |
| Ending Page | 2579 |
| Page Count | 6 |
| Volume Number | 2017 |
| e-ISSN | 20513305 |
| Issue Number | Issue 13, Jan (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2017/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2017.0792 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2017-01-01 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Active Power Loop Control of Electric Power System Cross-regulation Scheme Dq Frame Frequency Shift Grid Impedance Grid-connected Voltage-source Converter High-penetration Renewable Generation Inertia Control Phase-amplitude Cross-regulation Scheme Power And Energy Control Power Control Power Control Loops Power Grid Power System Stability Reactive Power Control Reactive Power Loop Resonance Peaks SFR Synchronous Frequency Resonance Synchronous Generator Synchronous Machine Synchronous Resonance Suppression Theoretical Analysis Virtual Synchronous Generator Voltage-source Converter VSG |
| Content Type | Text |
| Resource Type | Article |
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