A Control Method of Grid Integration for Current Control Type Virtual Synchronous Generator

2018 ◽  
Author(s):  
Qinan Li ◽  
Hailian Xie
Keyword(s):  
Control Method ◽  
Synchronous Generator ◽  
Current Control ◽  
Grid Integration ◽  
Virtual Synchronous Generator

scholarly journals Small-Signal Modeling and Parameter Optimization Design for Photovoltaic Virtual Synchronous Generator

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 398 ◽  
Author(s):  
Jun Deng ◽  
Nan Xia ◽  
Jungang Yin ◽  
Jiliang Jin ◽  
Shutao Peng ◽  
...  
Keyword(s):  
Optimization Design ◽  
Control Method ◽  
Design Method ◽  
Synchronous Generator ◽  
System Stability ◽  
Operating Point ◽  
Small Signal ◽  
Stochastic Fluctuation ◽  
Photovoltaic Power ◽  
Virtual Synchronous Generator

With the continuous proliferation of renewable energy generation, distributed photovoltaic inverters operating at a maximum power point reduce the inertia of power systems, degrading system frequency stability and potentially causing severe oscillations in systems after being disturbed. The virtual synchronous generator (VSG) control method, which causes photovoltaic inverters to possess inertia and damping, now plays an important role in the field of distributed generation. However, while introducing the advantages of synchronous machines, problems with oscillations are also introduced and the stochastic fluctuation characteristic of photovoltaics results in the stochastic drifting of the operating point. This paper presents an adaptive controller parameter design method for a photovoltaic-VSG (PV-VSG) integrated power system. Firstly, a small-signal model of the PV-VSG is built and a state space model is deduced. Then, the small-signal stability and low frequency oscillation characteristics of the photovoltaic power generation system are analyzed. Finally, considering the limitations of system oscillations and the stochastic drifting of the operating point, a global optimization design method for controller parameters used to improve system stability is proposed. The time domain simulation shows that an optimized PV-VSG could provide sufficient damping in the case of photovoltaic power output changes across a wider range.

scholarly journals The Novel Current Control for Virtual Synchronous Generator

2020 ◽  
Vol 08 (02) ◽  
pp. 78-89
Author(s):  
Atsushi Umemura ◽  
Rion Takahashi ◽  
Junji Tamura
Keyword(s):  
Synchronous Generator ◽  
Current Control ◽  
The Novel ◽  
Virtual Synchronous Generator

scholarly journals Virtual Synchronous Generator Grid Connected Control Method Based on Virtual Impedance

2019 ◽  
Vol 1187 (2) ◽  
pp. 022026
Author(s):  
Bao-zhu Shao ◽  
Guan-feng Zhang ◽  
Jun-you Yang ◽  
Fei-fei Gao ◽  
Feng Sun ◽  
...  
Keyword(s):  
Control Method ◽  
Synchronous Generator ◽  
Virtual Impedance ◽  
Virtual Synchronous Generator
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