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VOLTAGE ANGLE CONTROL OF A VOLTAGE SOURCE INVERTER - APPLICATION TO A GRID-CONNECTED WIND TURBINE
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| Author(s) |
J. Svensson |
| Abstract |
The voltage angle control of an inverter connected to the grid in a wind turbine application is presented. To analyse the system and find out the proper parameters of the controller the system is linearized at an operating point. The inverter is modelled by using only fondamental voltages. By using a PI-controller for the DC-link voltage and feedforward of the generator/rectifier current the voltage angle control can be used. The bandwidth of the inverter system is approximately 20 to 30 Hz. The parameters and the bandwidth of the system are determined by the allowed DC-link voltage fluctuation. The system can be analysed using a
linearized model unless the series inductance is very large. The controller using feedforward is insensitive to
series inductance variations, and the fluctuations depend on the size of the DC-link capacitor and the frequency
and amplitude of the generator/rectifier current. |
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| Filename: | Unnamed file |
| Filesize: | 609.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2018-04-12 by System |
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