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公开(公告)号：EP2509207A2
公开(公告)日：2012-10-10
申请号：EP12002421.1
申请日：2012-04-03
申请人： Hitachi, Ltd.
IPC分类号： H02M5/458
CPC分类号： H02M5/4585 , H02M1/14 , Y02B70/145
摘要： A power conversion system (10) suppresses condensers (3) from breaking down owing to thermal runaway. A resonance frequency f decided by parasitic inductance (6) of condensers (3) and capacitance of the condensers (3) changed in response to use temperature of the condensers (3) and/or DC voltage applied to the condensers (3) is set to fall within a range of mfc+Δf≦f≦(m+1)fc-Δf, where fc is a carrier frequency for driving at least one of switching elements (SW1 to SW6) of the first power converter (2) and switching elements (SW7 to SW12) of the second power converter (4), Δf a predetermined frequency and m a positive integer.
摘要翻译： 电力转换系统（10）抑制冷凝器（3）由于热失控而分解。 设定由冷凝器（3）的使用温度和/或施加到电容器（3）的直流电压而变化的冷凝器（3）的寄生电感（6）和电容器（3）的电容决定的谐振频率f 落在mfc +“f‰| f‰|（m + 1）fc-”f的范围内，其中fc是用于驱动第一功率转换器（2）的开关元件（SW1至SW6）中的至少一个的载波频率 ）和第二功率转换器（4）的开关元件（SW7至SW12），“fa预定频率和ma正整数”。
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公开(公告)号：EP2509207A3
公开(公告)日：2015-09-16
申请号：EP12002421.1
申请日：2012-04-03
申请人： Hitachi, Ltd.
CPC分类号： H02M5/4585 , H02M1/14 , Y02B70/145
摘要： A power conversion system (10) suppresses condensers (3) from breaking down owing to thermal runaway. A resonance frequency f decided by parasitic inductance (6) of condensers (3) and capacitance of the condensers (3) changed in response to use temperature of the condensers (3) and/or DC voltage applied to the condensers (3) is set to fall within a range of mfc+Δf≦f≦(m+1)fc-Δf, where fc is a carrier frequency for driving at least one of switching elements (SW1 to SW6) of the first power converter (2) and switching elements (SW7 to SW12) of the second power converter (4), Δf a predetermined frequency and m a positive integer.
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