Interleaved High Step-Up Multilevel Converter for Photovoltaic Generation System
碩士 === 國立臺灣科技大學 === 電機工程系 === 101 === This thesis proposes an interleaved high step-up multilevel converter for low-voltage dc generation systems such as photovoltaic modules. The converter consists of a two-stage power converter topology. The first stage converter can provide high step-up ratio wit...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/08051274233663736108 |
| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 101 === This thesis proposes an interleaved high step-up multilevel converter for low-voltage dc generation systems such as photovoltaic modules. The converter consists of a two-stage power converter topology. The first stage converter can provide high step-up ratio without using the step-up transformers based on the high step-up ratio characteristic of Cockcroft-Walton (CW) voltage multiplier and reduce input current ripple due to interleaved operation. Because of the output side of CW multiplier consists of cascaded capacitors, the second stage utilizes five-level inverter to provide single phase 60Hz ac output and reduce output voltage harmonic distortion. In additional, the converter is applied to photovoltaic generation system. The perturbation and observation method is used for maximum power point tracking to achieve the maximum output power of solar energy and implemented by a digital signal processor (DSP, TMS320F28069). The validity of the proposed solar system is verified by a voltage recorder recording the variation of the power from system in whole day.
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