Study and realization of a soft-switching inverter
碩士 === 國立宜蘭大學 === 電機工程學系碩士班 === 98 === The thesis proposed a zero-current-switching (ZCS) inverter. The proposed soft-switching inverter is configured by a full-bridge series-resonant inversion (FB-SRI). The presented FB-SRI is operated by frequency modulation control. The output sinusoidal voltage...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2010
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| Online Access: | http://ndltd.ncl.edu.tw/handle/08756444665455202279 |
| Summary: | 碩士 === 國立宜蘭大學 === 電機工程學系碩士班 === 98 === The thesis proposed a zero-current-switching (ZCS) inverter. The proposed soft-switching inverter is configured by a full-bridge series-resonant inversion (FB-SRI). The presented FB-SRI is operated by frequency modulation control. The output sinusoidal voltage is synthesized by a series of equal-amplitude quasi-sinusoidal pulses (QSPs) .The presented soft-switching inverter can use a simple LC filter to filter the undesired harmonics and get the sinusoidal voltage with low total harmonic distortion. The FB-SRI is realized soft-switching behavior without any auxiliary switches and auxiliary circuit. The soft-switching technique is operated by frequency modulation with a constant-on time control and series-resonant method to performed soft-switching behavior. A design example of a 1000-W single-phase soft-switching inverter is examined to assess the system performance. The power efficiency is over 90% at the rated output power. The total harmonic distortion (THD) at the rated output power is within 5%.
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