Research on the Control Strategy for Low Voltage Ride-through of Full Power Converter for Wind Turbine
A control strategy of low voltage ride-through(LVRT) for full power converter is studied based on the system structure of 2.5 MW wind turbine with permanent magnet synchronous generator and the requirements of LVRT. A fast amplitude detection method for grid voltage and the design of phase locked lo...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Control and Information Technology
2013-01-01
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| Series: | Kongzhi Yu Xinxi Jishu |
| Subjects: | |
| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2095-3631.2013.03.012 |
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| Summary: | A control strategy of low voltage ride-through(LVRT) for full power converter is studied based on the system structure of 2.5 MW wind turbine with permanent magnet synchronous generator and the requirements of LVRT. A fast amplitude detection method for grid voltage and the design of phase locked loop based on the detection of positive sequence component under normal and fault conditions of grid are illustrated in details. Control methods of DC voltage, chopping time, active current and reactive current are analyzed and designed based on the controlling aim of output symmetrical three phase current. The results of dSPACE hardware in loop simulation and real converter test show that with this LVRT control strategy, not only the prospective control goals can be achieved and the quality of grid-connected current can be guaranteed, but also the function of high voltage ride through can be obtained. The control strategy can meet the LVRT requirements of full power converter of wind turbine. |
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| ISSN: | 2096-5427 |