雙正激變換器中高頻變壓器激磁電感的作用研究
工作區(qū)間一:
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。這個(gè)階段的工作過(guò)程同階段
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,持續(xù)時(shí)間記為
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:
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(5)
工作區(qū)間二:
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。在
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時(shí)刻,變壓器副邊電流從
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換到
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、寄生電容
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和寄生電容
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諧振。直到
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時(shí)刻,由于
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和
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上的電壓小于
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,原邊續(xù)流二極管
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和
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仍然反偏。這個(gè)階段到激磁電流降至零時(shí)結(jié)束。持續(xù)時(shí)間記為
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:
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(6)
工作區(qū)間三:
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。在
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時(shí)刻,激磁電感
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仍然在和寄生電容
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、
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諧振。此后
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和
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上的電壓開始下降。這個(gè)階段到寄生電容IMG]2004121717402956679.gif[/IMG]和
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上的電壓降至
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時(shí)結(jié)束。持續(xù)時(shí)間記為
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評(píng)論