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| Content Provider | IET Digital Library |
|---|---|
| Author | Yuan, Xibo Li, Yongdong |
| Abstract | In the case of operating in a weak grid system, when wind power becomes a significant portion of the power system or even the sole energy source, the wind power generators and converters are expected to help maintain the grid voltage. The grid-side converter needs to work as a voltage source to help regulate the terminal (grid) voltage amplitude and frequency by adjusting the reactive power and active power flow, respectively. For a direct-drive permanent magnet synchronous generator with a full power converter, the active power must be provided by the captured wind power. The active power flow between the source (captured wind power) and the grid (load) must be balanced by actively controlling the generator speed and wind turbine pitch angle. In the study, the coordinated control of generator speed and blade pitch angle is proposed together with a dc-link voltage controller. A model of the grid-side converter operating as a voltage source has been built and the strategy regarding voltage and frequency regulation is presented. Simulation is carried out with different wind and load profile. The results show the wind energy can help support the weak grid and power the local grid in stand-alone mode as well. |
| Starting Page | 119 |
| Ending Page | 131 |
| Page Count | 13 |
| ISSN | 17521416 |
| Volume Number | 8 |
| e-ISSN | 17521424 |
| Issue Number | Issue 2, Mar (2014) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/8/2 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2012.0212 |
| Journal | IET Renewable Power Generation |
| Publisher Date | 2013-09-17 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Acceleration Active Power Balance Active Power Flow Angular Velocity Control Autonomous Control Blade Pitch Angle Control of Electric Power System DC-link Voltage Controller Direct-drive Permanent Magnet SG Droop Control Method Frequency Control Frequency Regulation Generator Speed Coordinated Control Grid Voltage Grid-side Converter Load Condition Load Flow Control Load Power Multiple Paralleled Wind Turbines Permanent Magnet Generator Power Converter Power Grid Power Plant Power System Control Reactive Power Rotation Control Sole Energy Source Sole Pitch Control Method Supplied Variable Pitch Control Synchronous Generator Synchronous Machine Terminal Voltage Amplitude Regulation Variable Speed Direct-drive Wind Turbines Velocity Voltage Control Weak Grid System Wind Power Generator Wind Power Plant Wind Turbine Pitch Angle Wind Turbine Rotational Inertia |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment |
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