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1.发明公开Overcurrent fault detection device for electrical drive control system 有权Überstromfehlererkennungsvorrichtungfürelektrisches Antriebssteuersystem
公开(公告)号：EP2424064A1
公开(公告)日：2012-02-29
申请号：EP11177857.7
申请日：2011-08-17
发明人： Yamai, Hiroyuki , Noto, Yasuo , Akaishi, Yoshio , Myoen, Kohei
CPC分类号： G01R31/02 , H02M7/537 , H02M2001/0009 , H02P29/032
摘要： According to the present invention, an overcurrent fault detection device includes: an inverter 2 converting DC current to three-phase AC currents for driving a motor 3; a DC voltage detector 4; phase current detectors 5-7; a rotational position detector 8 that detects a rotational angle of the motor 3; a control circuit 9 that controls a gate drive circuit 10, which controls the inverter 2 at every predetermined cycle, based upon the phase current values, a motor rotational angle detection value, and a speed command or a torque command from a higher-order control device; and a first decision-making circuit that detects an overcurrent based upon the phase current values at every predetermined cycle, wherein: the first decision-making circuit determines whether or not the phase current values exceed a predetermined amplitude threshold value by frequency detection for any of the phase current values exceeding the predetermined amplitude threshold value, and determines that an overcurrent has occurred upon detecting the frequency.
摘要翻译： 根据本发明，过电流故障检测装置包括：逆变器2将直流电流转换成用于驱动电动机3的三相交流电流; 直流电压检测器4; 相电流检测器5-7; 检测电动机3的旋转角度的旋转位置检测器8; 控制电路9，其基于相电流值，电动机旋转角度检测值，以及来自高级控制器的转速指令或转矩指令，控制以每隔一定周期控制逆变器2的门驱动电路10 设备; 以及第一决策电路，其基于每个预定周期的相电流值来检测过电流，其中：所述第一决策电路通过频率检测来确定所述相电流值是否超过预定振幅阈值 相电流值超过预定振幅阈值，并且在检测到频率时确定已经发生过电流。
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2.发明授权
公开(公告)号：EP2424064B1
公开(公告)日：2015-07-15
申请号：EP11177857.7
申请日：2011-08-17
发明人： Yamai, Hiroyuki , Noto, Yasuo , Akaishi, Yoshio , Myoen, Kohei
CPC分类号： G01R31/02 , H02M7/537 , H02M2001/0009 , H02P29/032
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3.发明公开
公开(公告)号：EP2403131A3
公开(公告)日：2017-05-31
申请号：EP11172154.4
申请日：2011-06-30
发明人： Akaishi, Yoshio , Noto, Yasuo , Yahata, Koichi , Matsui, Hirokazu
CPC分类号： H02P21/06 , H02H7/1227 , H02P29/032
摘要： According to the present invention, an electrical power conversion system includes: a motor 1; an inverter circuit 2 that outputs three-phase (U-phase, V-phase, W-phase) alternating currents to the motor 1; a current sensor 3a, 3b, 3c that detects each of the three-phase alternating currents; and a control circuit 100 that controls the inverter circuit 2 based on a torque command value and values detected by the current sensor 3a, 3b, 3c, so that the three-phase alternating currents outputted from the inverter circuit 2 are formed as sine waves; and wherein the control circuit 100 includes: a current component extraction unit 30 that, based on the values detected by the current sensor 3a, 3b, 3c, for each phase, extracts current components superimposed upon each of three-phase alternating currents; and an AC current abnormality detection unit that detects abnormality of an AC current flowing to the motor 1, based on the phases of the current components for any two phases among the three-phase alternating currents.
摘要翻译： 。根据本发明，电功率转换系统，包括：电动机1; 到逆变器电路2个输出的三相做（U相，V相，W相）交流电流给电动机1; 电流传感器3a，图3b，图3c所做的每个三相交流电流的检测; 和控制电路100那样控制逆变器电路2基于由电流传感器3a，图3b，图3c检测出的转矩指令值和值，所以做了三相交流电流从逆变器电路2被形成为正弦波的输出; 和worin控制电路100包括：一个电流分量提取单元30，其基于由电流传感器3A的检测值，3B，3C，对于每个相，提取叠加在每个三相交流电流的电流分量; 和交流电流异常检测单元没有流过电动机1的交流电流的检测异常时，基于所述三相交流电流中的任何两个相的电流分量的相位。
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4.发明公开
公开(公告)号：EP2403131A2
公开(公告)日：2012-01-04
申请号：EP11172154.4
申请日：2011-06-30
发明人： Akaishi, Yoshio , Noto, Yasuo , Yahata, Koichi , Matsui, Hirokazu
IPC分类号： H02P21/06
CPC分类号： H02P21/06 , H02H7/1227 , H02P29/032
摘要： According to the present invention, an electrical power conversion system includes: a motor 1; an inverter circuit 2 that outputs three-phase (U-phase, V-phase, W-phase) alternating currents to the motor 1; a current sensor 3a, 3b, 3c that detects each of the three-phase alternating currents; and a control circuit 100 that controls the inverter circuit 2 based on a torque command value and values detected by the current sensor 3a, 3b, 3c, so that the three-phase alternating currents outputted from the inverter circuit 2 are formed as sine waves; and wherein the control circuit 100 includes: a current component extraction unit 30 that, based on the values detected by the current sensor 3a, 3b, 3c, for each phase, extracts current components superimposed upon each of three-phase alternating currents; and an AC current abnormality detection unit that detects abnormality of an AC current flowing to the motor 1, based on the phases of the current components for any two phases among the three-phase alternating currents.
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