Design and Implementation of Conducted EMI Filter for PV Inverter
碩士 === 中原大學 === 電機工程研究所 === 101 === To reduce the power density of the power supply, the switching frequency of switching power supply (SPS) is getting high, but also causes the increasing of electromagnetic interference (EMI). This thesis is to develop the EMI filters between the input and output o...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/51708796096169035302 |
| Summary: | 碩士 === 中原大學 === 電機工程研究所 === 101 === To reduce the power density of the power supply, the switching frequency of switching power supply (SPS) is getting high, but also causes the increasing of electromagnetic interference (EMI). This thesis is to develop the EMI filters between the input and output of the PV inverter so as to suppress EMI noise complying with CISPR22 (Comité International Spécial des Perturbations Radioélectriques) ClassB suppression standards. In this study, differential-mode and common-mode separation techniques for suppressing EMI at input and output of the PV inverter are investigated. Three kinds of filter ladders of 1 to 3 are examined with analysis and simulation. Finally, a demonstrated prototype of 500W PV inverter with two-ladder filter at input and three-ladder filter at output is explored to verify the attenuation capability and noise suppression effect. The experimental results are close to the theoretical evaluation and comply with CISPR22 Class B.
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