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    • 1. 发明申请
    • OVERVOLTAGE PROTECTION FOR A CONVERTER
    • 转换器的过电压保护
    • US20100134057A1
    • 2010-06-03
    • US12594491
    • 2008-04-04
    • Bernhard FöckingGuido StöpplerAlexander Wagenpfeil
    • Bernhard FöckingGuido StöpplerAlexander Wagenpfeil
    • H02H7/09
    • H02H7/0838H02H7/1227
    • The invention relates to a method for protecting against over voltage that is simple to produce, economical, compact and is simultaneously effective against over voltage for a converter (8) provided for supplying an electric motor (1) comprising at least one motor phase (L1, L2, L3). Said converter comprises an electric intermediate circuit (10) and several half-bridges (13a, 13b, 13c) that are connected in parallel in the intermediate circuit and respectively comprise a circuit breaker (15a, 15b, 15c) on the high potential side and a circuit breaker (17a, 17b, 17c) on the low potential side, in addition to an intermediately connected phase connection (14a, 14b, 14c). According to the invention, an intermediate circuit voltage (Uz) is detected and the or each motor phase (L1,L2,L3) is short-circuited by controlling the circuit breaker (15a, 15b, 15c) on the high potential side or the circuit breaker (17a, 17b, 17c) on the low potential side, if the intermediate circuit voltage (Uz) exceeds a predetermined maximum value. The invention also relates to a motor module (3) that comprises the converter (8) and a protection logic (22) for carrying out said method.
    • 本发明涉及一种用于防止过电压的方法,所述过电压易于制造,经济,紧凑并且同时有效地抵抗用于供应电动机(1)的转换器(8)的过电压,该电动机包括至少一个电动机相(L1 ,L2,L3)。 所述转换器包括电中间电路(10)和在中间电路中并联连接并分别包括在高电位侧的断路器(15a,15b,15c)的几个半桥(13a,13b,13c) 除了中间连接的相位连接(14a,14b,14c)之外的低电位侧的断路器(17a,17b,17c)。 根据本发明,通过控制高电位侧的断路器(15a,15b,15c)和/或电动机相位(L1,L2,L3)的短路电流 如果中间电路电压(Uz)超过预定的最大值,则在低电位侧的断路器(17a,17b,17c)。 本发明还涉及一种包括转换器(8)和用于执行所述方法的保护逻辑(22)的电机模块(3)。