發(fā)布時間：2018-12-26 09:24

【摘要】：采用繞組繞制在EE型磁芯側(cè)柱上的方法設(shè)計(jì)高頻變壓器,通過適當(dāng)?shù)睦@組和氣隙設(shè)計(jì),使得高頻變壓器勵磁電感和漏感滿足LLC諧振電路參數(shù)的要求,LLC諧振槽中的兩個諧振電感和變壓器可以集成在同一磁芯上,減少變換器磁性元件個數(shù),磁集成變換器可以提高效率,提高了變換器功率密度;同時,LLC磁集成焊接電源在整個負(fù)載工作范圍內(nèi),實(shí)現(xiàn)原邊開關(guān)管零電壓開通,副邊整流管實(shí)現(xiàn)零電流關(guān)斷,降低損耗.在此基礎(chǔ)上,研制2.5k W輸出平特性的軟開關(guān)全橋LLC磁集成焊接電源試驗(yàn)樣機(jī).結(jié)果表明,磁集成技術(shù)提高了系統(tǒng)性能.
[Abstract]:The high frequency transformer is designed by winding on the side column of EE type magnetic core. The excitation inductance and leakage inductance of high frequency transformer can meet the requirements of LLC resonant circuit parameters through proper winding and air gap design. The two resonant inductors and transformers in the LLC resonant slot can be integrated on the same core to reduce the number of magnetic elements of the converter. The magnetically integrated converter can improve the efficiency and the power density of the converter. At the same time, LLC magnetically integrated welding power supply can turn on zero voltage of primary switch tube and zero current of auxiliary side rectifier tube in the whole load range, and reduce the loss. On this basis, a 2.5kW output level test prototype of soft-switching full-bridge LLC magnetic integrated welding power supply is developed. The results show that the system performance is improved by magnetic integration technology.
【作者單位】： 廣西大學(xué)電氣工程學(xué)院;華南理工大學(xué)機(jī)械工程學(xué)院;
【基金】：廣西自然科學(xué)基金資助項(xiàng)目(2014GXNSFAA118380)
【分類號】：TG43
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本文編號：2391885