Direct driving wind power generation system based on double SVPWM current mode convertor and control method thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HEFEI UNIV OF TECH
- Publication Date
- 2011-03-02
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to an electric energy conversion system and a control method applied in a large-scale wind power generation system. Background technique
[0002] From a technical point of view, converters can be divided into two types: voltage source type and current source type. In the current market, two-level voltage source converters dominate wind power system applications due to low cost and modular design. However, as the capacity of the wind power generation system increases, the use of a 690V two-level voltage source converter system will make the output current of the converter too large, which will result in very expensive cables from the generator axle to the ground. If the grid-connected power generation is realized after step-up and voltage regulation conversion, this will inevitably increase the cost and complexity of the system. The current-type grid-connected inverter just makes up for the deficiency of the voltage-type grid-con...