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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhang, Bo Zhang, Xueyuan Song, Zijun Yan, Xiangwu |
| Abstract | Currently, virtual synchronous generator (VSG) technology is proposed to be a solution to stability controlling of micro-source inverter. However, the deviation from phase locked loop (PLL) influences the reference frequency calculating which is important to the VSG control system. This paper focuses on the virtual inertia controller in the VSG control system, an enhanced controller is achieved for avoiding the effect of PLL on the VSG dynamics. For analysing dynamic characteristics of the enhanced VSG control system, the linearised small-signal model of VSG in isolated operation is well established, including electrical system, enhanced virtual inertia controller, voltage and current controller, virtual impedance, and droop controller. By small-signal stability analysis, the influence rules of the main parameters (load, line, virtual inertia and proportional-Integral gain) on VSG system impacts are provided, which helps identifying possible feedback signals for controller design to improve the system stability. Results obtained from time-domain small-signal model are compared with those from the electrical simulation to verify its accuracy. |
| Starting Page | 3082 |
| Ending Page | 3087 |
| Page Count | 6 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 16, Mar (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/conferences/cn-adc-2018 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8453 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2018-10-29 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution -Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) |
| Subject Keyword | Control of Electric Power System Control System Analysis Control System Synthesis Current Controller Droop Controller Electric Current Control Electrical System Enhanced Control Design Enhanced Controller Enhanced Virtual Inertia Controller Enhanced VSG Control System Feedback Invertors Machine Control Phase Locked Loop PLL Power Generation Control Power System Control Power System Stability Small-signal Stability Analysis Stability Controlling Synchronous Generator Synchronous Machine Synthesis Method Virtual Impedance Virtual Synchronous Generator Virtual Synchronous Generator Technology VSG Dynamics VSG System Impacts |
| Content Type | Text |
| Resource Type | Article |
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