Highly Efficient AC-DC Converter for Small Wind Power Generators
| Autor: | Hyung-Min Ryu |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Forward converter
Engineering business.industry Flyback converter Buck converter Buck–boost converter Ćuk converter Electrical engineering Electric generator Insulated-gate bipolar transistor law.invention Control and Systems Engineering law Boost converter Electronic engineering Electrical and Electronic Engineering business |
| Zdroj: | Journal of Power Electronics. 11:188-193 |
| ISSN: | 1598-2092 |
| DOI: | 10.6113/jpe.2011.11.2.188 |
| Popis: | A highly efficient AC-DC converter for small wind power generation systems using a brushless DC generator (BLDCG) is presented in this paper. The market standard AC-DC converter for a BLDCG consists of a three-phase diode rectifier and a boost DC-DC converter, which has an IGBT and a fast recovery diode (FRD). This kind of two-stage solution basically suffers from a large amount of conduction loss and the efficiency greatly decreases under a light load, or at a low current, because of the switching devices with a P-N junction. In order to overcome this low efficiency, especially at a low current, a three-phase bridgeless converter consisting of three upper side FRDs and three lower side Super Junction FETs is presented. In the overall operating speed region, including the cut-in speed, the efficiency of the proposed converter is improved by up to 99%. Such a remarkable result is validated and compared with conventional solutions by calculating the power loss based on Ⅰ-Ⅴ curves and the switching loss data of the adopted commercial switches and the current waveforms obtained through PSIM simulations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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