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1. 发明授权

EP2738932B1 SECONDARY POWER SYSTEM AND METHOD FOR SUPPRESSING VOLTAGE TRANSIENT IN THE SECONDARY POWER SYSTEM 有权
公开(公告)号：EP2738932B1
公开(公告)日：2018-05-23
申请号：EP13760374.2
申请日：2013-01-23
申请人： Huawei Technologies Co., Ltd.
发明人： ZHANG, Zhenyu , FAN, Xiaodong
IPC分类号： H02M7/48 , H02M3/28 , H02M1/32 , H02M3/335
CPC分类号： H02M1/32 , H02M3/33523 , H02M2001/0022
摘要： A secondary power supply system is disclosed, including a feedforward circuit, a transformer, and a digital control module; the feedforward circuit is located at the primary side of the transformer and is configured to receive an input voltage and a drive rectangular sent by the digital control module, obtain a peak level of a triangular wave whose frequency is equal to a frequency of the drive rectangular wave according to the input voltage and duty cycle of the rectangular wave, and perform an AND operation between an overvoltage protection reference voltage and the drive rectangular wave to obtain the drive rectangular wave that has undergone the AND operation; the transformer is configured to obtain an output voltage according to the input voltage, duty cycle of the drive rectangular wave that has undergone the AND operation sent by the feedforward circuit, and a turn ratio of the primary side of the transformer to the secondary side of the transformer; the digital control module is located at the secondary side of the transformer and is configured to output a rectangular wave to the feedforward circuit. In addition, the invention further provides a method for suppressing voltage transient in a secondary power supply system.

2. 发明公开

EP3182544A1 DIGITAL POWER SUPPLY PROTECTION CIRCUIT AND DEVICE 审中-公开
标题翻译：数字电源保护电路和设备
公开(公告)号：EP3182544A1
公开(公告)日：2017-06-21
申请号：EP15890591.9
申请日：2015-10-19
申请人： Huawei Technologies Co. Ltd.
发明人： XIANG, Li , FAN, Xiaodong
IPC分类号： H02H7/12
CPC分类号： H02H7/0858 , H02H7/0838 , H02H7/12 , H02M1/32 , H02M1/40 , H02M3/337
摘要： A digital power supply protection circuit and an apparatus are used to improve reliability of a bridge circuit. The digital power supply protection circuit includes: a signal preprocessing circuit, configured to receive an overcurrent signal and a first inceptive impulse clock timing, and perform preprocessing on the overcurrent signal according to the first inceptive impulse clock timing so as to obtain a first reference signal, where the first inceptive impulse clock timing is an inceptive impulse clock timing that controls a power switch that is switched on at the first time in a current period; a signal generation circuit, configured to receive the first inceptive impulse clock timing, count time duration between a rising edge of the first inceptive impulse clock timing and a rising edge of the first reference signal so as to obtain a first time duration, and upon the first time duration is greater than a second time duration, generate a first disabling signal by delaying the rising edge of the first inceptive impulse clock timing for the second time duration, where the second time duration is time duration between a switching-on moment of a power switch that is switched on at the second time in a previous period and a moment when an overcurrent occurs; and a clock timing adjustment circuit, configured to adjust the first inceptive impulse clock timing according to the first disabling signal.
摘要翻译：使用数字电源保护电路和装置来提高电桥电路的可靠性。所述数字电源保护电路包括：信号预处理电路，用于接收过流信号和第一触发脉冲时钟定时，并根据所述第一触发脉冲时钟定时对所述过电流信号进行预处理，得到第一参考信号，其中第一触发脉冲时钟定时是控制在当前时段中第一时间接通的功率开关的触发脉冲时钟定时; 信号发生电路，用于接收所述第一触发脉冲时钟定时，对所述第一触发脉冲时钟定时的上升沿与所述第一参考信号的上升沿之间的持续时间进行计数，以获得第一持续时间，第一持续时间大于第二持续时间，通过将第一触发脉冲时钟定时的上升沿延迟第二持续时间来产生第一禁用信号，其中第二持续时间是在第一持续时间和第二持续时间之间的持续时间，在前一时间段和过电流发生时刻第二次接通的电源开关; 时钟定时调整电路，用于根据所述第一禁用信号调整所述第一触发脉冲时钟定时。

3. 发明公开

EP3136578A1 POWER SOURCE MANAGEMENT METHOD AND POWER SOURCE 有权转让
标题翻译： STROMQUELLENVERWALTUNGSVERFAHREN UND STROMQUELLE
公开(公告)号：EP3136578A1
公开(公告)日：2017-03-01
申请号：EP15810506.4
申请日：2015-01-06
申请人： Huawei Technologies Co. Ltd.
发明人： HOU, Zhaozheng , FAN, Xiaodong , CHENG, Jiebin , LIU, Zhihua , ZHANG, Xuezhen
IPC分类号： H02M3/335
CPC分类号： H02M3/33546 , H02M1/08 , H02M3/33584 , H02M3/33592 , H02M3/3376 , H02M2001/0009 , H02M2001/0016 , H02M2001/0025 , Y02B70/1475
摘要： A power source management method and a power source are provided. The method includes: comparing a feedforward control signal with a feedback control signal by using a logic control circuit, outputting the signals after the comparison, and performing matching, to obtain control signals of switching transistors of a full-bridge topology circuit (S301); and adjusting the control signals of the switching transistors of the full-bridge topology circuit by using the logic control circuit, so that operating duty cycles of two bridge arms on a primary side match, are symmetric within one switch period of the logic control circuit, or match for a long time, to prevent transformer biasing (S302). The power source management method and the power source can achieve good feedforward performance, suppress input disturbance, and additionally prevent transformer biasing, which ensures that the power source works normally.
摘要翻译：提供电源管理方法和电源。该方法包括：通过使用逻辑控制电路比较前馈控制信号和反馈控制信号，输出比较后的信号并进行匹配，以获得全桥拓扑电路的开关晶体管的控制信号（S301）; 以及通过使用逻辑控制电路来调整全桥拓扑电路的开关晶体管的控制信号，使得初级侧的两个桥臂的工作占空比匹配在逻辑控制电路的一个开关周期内是对称的，或匹配很长时间，以防止变压器偏置（S302）。电源管理方法和电源可以实现良好的前馈性能，抑制输入干扰，另外防止变压器偏置，保证电源工作正常。

4. 发明授权

EP3136578B1 POWER SOURCE MANAGEMENT METHOD AND POWER SOURCE 有权转让
公开(公告)号：EP3136578B1
公开(公告)日：2020-11-25
申请号：EP15810506.4
申请日：2015-01-06
申请人： Huawei Technologies Co. Ltd.
发明人： HOU, Zhaozheng , FAN, Xiaodong , CHENG, Jiebin , LIU, Zhihua , ZHANG, Xuezhen
IPC分类号： H02M3/335 , H02M1/00 , H02M3/337

5. 发明公开

EP2738932A1 SECONDARY POWER SYSTEM AND METHOD FOR SUPPRESSING VOLTAGE TRANSIENT IN THE SECONDARY POWER SYSTEM 有权
标题翻译： SEKUNDÄRSTROMSYSTEMUND VERFAHREN ZURUNTERDRÜCKUNGVONÜBERGANGSSPANNUNGENDEMSEKUNDÄRSTROMSYSTEM
公开(公告)号：EP2738932A1
公开(公告)日：2014-06-04
申请号：EP13760374.2
申请日：2013-01-23
申请人： Huawei Technologies Co., Ltd
发明人： ZHANG, Zhenyu , FAN, Xiaodong
IPC分类号： H02M7/48 , H02M3/28 , H02M1/32
CPC分类号： H02M1/32 , H02M3/33523 , H02M2001/0022
摘要： A secondary power supply system is disclosed, including a feedforward circuit, a transformer, and a digital control module; the feedforward circuit is located at the primary side of the transformer and is configured to receive an input voltage and a drive rectangular sent by the digital control module, obtain a peak level of a triangular wave whose frequency is equal to a frequency of the drive rectangular wave according to the input voltage and duty cycle of the rectangular wave, and perform an AND operation between an overvoltage protection reference voltage and the drive rectangular wave to obtain the drive rectangular wave that has undergone the AND operation; the transformer is configured to obtain an output voltage according to the input voltage, duty cycle of the drive rectangular wave that has undergone the AND operation sent by the feedforward circuit, and a turn ratio of the primary side of the transformer to the secondary side of the transformer; the digital control module is located at the secondary side of the transformer and is configured to output a rectangular wave to the feedforward circuit. In addition, the invention further provides a method for suppressing voltage transient in a secondary power supply system.
摘要翻译：公开了一种二次电源系统，包括前馈电路，变压器和数字控制模块; 前馈电路位于变压器的初级侧，并且被配置为接收由数字控制模块发送的输入电压和驱动矩形，获得频率等于驱动矩形的频率的三角波的峰值电平根据矩形波的输入电压和占空比，进行过压保护参考电压和驱动矩形波之间的“与”运算，得到经过“与”运算的驱动矩形波; 变压器被配置为根据输入电压，经过前馈电路发送的与运算的驱动矩形波的占空比获得输出电压，并且变压器的初级侧与次级侧的匝数比变压器; 数字控制模块位于变压器的次级侧，并被配置为向前馈电路输出矩形波。此外，本发明还提供一种用于抑制二次电源系统中的电压瞬变的方法。

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