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1. 发明授权

EP3163702B1 OVER-CURRENT PROTECTION SYSTEM AND METHOD FOR INVERTER CIRCUIT 有权转让
公开(公告)号：EP3163702B1
公开(公告)日：2020-09-02
申请号：EP15824464.0
申请日：2015-07-08
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Kelei
IPC分类号： H02H7/122 , H02H9/00 , H02H3/08

2. 发明授权

EP2750272B1 DIODE NEUTRAL POINT CLAMPED THREE-LEVEL INVERTER CURRENT LIMITING CONTROL METHOD AND RELATED CIRCUIT THEREOF 有权转让
公开(公告)号：EP2750272B1
公开(公告)日：2018-05-23
申请号：EP13814817.6
申请日：2013-08-06
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Kelei , WANG, Fuzhou , LV, Yihang
IPC分类号： H02M1/32 , H02M7/487
CPC分类号： H02H7/122 , H02H9/02 , H02M1/32 , H02M7/487
摘要： This application discloses a current limiting control method for a diode neutral-point-clamped three-level inverter and a related circuit. Specifically, when a current in switching tubes is lowered to a value not greater than a first preset current value, the current limiting control method for a diode neutral-point-clamped three-level inverter and the related circuit drive a switching tube of the switching tubes inside the bridge arm to be turned on; after a first delay time, drive another switching tube of the inside switching tubes to be turned on; after a second delay time, control a switching tube of the inside switching tubes to be turned off and another switching tube to be normally turned on; and control all the switching tubes to be turned on or off according to a control time sequence of the diode neutral-point-clamped three-level inverter circuit. In this control manner, a turn-on/off order of the switching tubes in the diode neutral-point-clamped three-level inverter circuit is controlled, voltage stress of the switching tubes is reduced, and it is ensured that the voltage stress of the switching tubes does not exceed a limit when a current-limiting state is exited.

3. 发明公开

EP2750272A1 DIODE NEUTRAL POINT CLAMPED THREE-LEVEL INVERTER CURRENT LIMITING CONTROL METHOD AND RELATED CIRCUIT THEREOF 有权转让
标题翻译：限流点控制法三点式逆变器二极管中性点末端及相关电路
公开(公告)号：EP2750272A1
公开(公告)日：2014-07-02
申请号：EP13814817.6
申请日：2013-08-06
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Kelei , WANG, Fuzhou , LV, Yihang
IPC分类号： H02M1/32 , H02M7/487
CPC分类号： H02H7/122 , H02H9/02 , H02M1/32 , H02M7/487
摘要： This application discloses a current limiting control method for a diode neutral-point-clamped three-level inverter and a related circuit. Specifically, when a current in switching tubes is lowered to a value not greater than a first preset current value, the current limiting control method for a diode neutral-point-clamped three-level inverter and the related circuit drive a switching tube of the switching tubes inside the bridge arm to be turned on; after a first delay time, drive another switching tube of the inside switching tubes to be turned on; after a second delay time, control a switching tube of the inside switching tubes to be turned off and another switching tube to be normally turned on; and control all the switching tubes to be turned on or off according to a control time sequence of the diode neutral-point-clamped three-level inverter circuit. In this control manner, a turn-on/off order of the switching tubes in the diode neutral-point-clamped three-level inverter circuit is controlled, voltage stress of the switching tubes is reduced, and it is ensured that the voltage stress of the switching tubes does not exceed a limit when a current-limiting state is exited.
摘要翻译：本申请盘松动为一二极管中性点钳位三电平逆变器和相关的电路的限流控制方法。具体而言，当在开关管的电流被降低到小于或等于第一预设电流值大的值，对于一个二极管中性点钳位型三电平逆变器的电流限制控制方法和相关的电路驱动开关的开关管桥臂内管导通; 第一延迟时间后，驱动器内部的管导通的开关的另一个开关管; 第二延迟时间之后，控制所述开关的切换管内管被关断和另一个开关管被正常导通; 和控制所有开关管的要被打开或关闭gemäß转向二极管中性点钳位三电平逆变器电路的控制时间序列。在该控制方式中，导通/关断在二极管中性点钳位型三电平逆变器电路中的开关管的顺序进行控制，开关管的电压应力被减小，并且确保确实的电压应力开关管的大小限制的限制。当限流状态中退出。

4. 发明授权

EP2698911B1 POWER ELECTRONIC CIRCUIT 有权转让
公开(公告)号：EP2698911B1
公开(公告)日：2019-08-21
申请号：EP12866404.2
申请日：2012-12-11
申请人： Huawei Technologies Co., Ltd.
发明人： ZHANG, Tao , LIU, Kelei , LI, Junlin
IPC分类号： H02M7/487

5. 发明公开

EP2698911A1 POWER ELECTRONIC CIRCUIT 有权转让
标题翻译： ELEKTRONISCHER STROMKREIS
公开(公告)号：EP2698911A1
公开(公告)日：2014-02-19
申请号：EP12866404.2
申请日：2012-12-11
申请人： Huawei Technologies Co., Ltd.
发明人： ZHANG, Tao , LIU, Kelei , LI, Junlin
IPC分类号： H02M7/487
CPC分类号： H02M7/487 , H02M2001/0064
摘要： A power electronic circuit includes a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, a fifth switching transistor, a sixth switching transistor, a first capacitor, a second capacitor, a first inductor, and a second inductor; the first capacitor and the second capacitor are serial connected between an input positive bus and an input negative bus, where the first capacitor and the second capacitor are connected to a fifth node; the first switching transistor, the second switching transistor, the third switching transistor, and the fourth switching transistor are serial connected between the first capacitor and the second capacitor; the first switching transistor and the second switching transistor are connected to a first node; the second switching transistor and the third switching transistor are connected to a second node, and the third switching transistor and the fourth switching transistor are connected to a third node; the fifth switching transistor and the sixth switching transistor are connected to a fourth node, and the fifth switching transistor is connected to the first node through the first inductor; the sixth switching transistor is connected to the third node through the second inductor; the second node is connected to the fifth node. The embodiments of the present invention avoid long charging and discharging paths of the junction capacitor of the switching transistors.
摘要翻译：电力电子电路包括第一开关晶体管，第二开关晶体管，第三开关晶体管，第四开关晶体管，第五开关晶体管，第六开关晶体管，第一电容器，第二电容器，第一电感器和第二开关晶体管电感器; 第一电容器和第二电容器串联连接在输入正母线和输入负母线之间，其中第一电容器和第二电容器连接到第五节点; 第一开关晶体管，第二开关晶体管，第三开关晶体管和第四开关晶体管串联连接在第一电容器和第二电容器之间; 第一开关晶体管和第二开关晶体管连接到第一节点; 第二开关晶体管和第三开关晶体管连接到第二节点，并且第三开关晶体管和第四开关晶体管连接到第三节点; 第五开关晶体管和第六开关晶体管连接到第四节点，第五开关晶体管通过第一电感器连接到第一节点; 第六开关晶体管通过第二电感器连接到第三节点; 第二节点连接到第五节点。本发明的实施例避免了开关晶体管的结电容器的长的充电和放电路径。

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