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1. 发明公开

EP3882936A1 TRANSFORMER AND POWER SUPPLY 审中-公开
公开(公告)号：EP3882936A1
公开(公告)日：2021-09-22
申请号：EP19896440.5
申请日：2019-11-28
申请人： Huawei Technologies Co., Ltd.
发明人： TAN, Wei , CHENG, Jiebin , XIAN, Peng , YE, Qiong
IPC分类号： H01F27/24 , H01F27/28 , H01F27/30 , H02M1/00
摘要： This application relates to the field of electronic technologies, and discloses a transformer and a power supply, to provide a magnetic cylinder distribution structure of a magnetic core while reducing a winding loss by using fractional turn, where the magnetic cylinder distribution structure of the magnetic core is conveniently to implement, thereby reducing product costs. The transformer includes a magnetic core, where the magnetic core includes a first magnetic cylinder and a second magnetic cylinder. One end of the first magnetic cylinder is coupled to one end of the second magnetic cylinder and the other end of the first magnetic cylinder is coupled to the other end of the second magnetic cylinder, to form an annulus. One or more primary-side windings are wound around the first magnetic cylinder and the second magnetic cylinder, and the primary-side winding is connected to a primary-side switch circuit. When the primary-side switch circuit supplies power to the primary-side winding, a magnetic flux is generated around the primary-side winding on the first magnetic cylinder and the second magnetic cylinderprimary-side winding. A direction of a magnetic flux generated on the first magnetic cylinder is the same as a direction of a magnetic flux generated on the second magnetic cylinder; a secondary-side winding is separately wound around the first magnetic cylinder and the second magnetic cylinder, the secondary-side winding is configured to induce the magnetic flux on the first magnetic cylinder or the second magnetic cylinder to generate a current, and there are fractional turns of the secondary-side windingwinding.

2. 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

3. 发明公开

EP3796534A1 POWER CONVERTER AND RELATED SYSTEM 无效转让
公开(公告)号：EP3796534A1
公开(公告)日：2021-03-24
申请号：EP19814105.3
申请日：2019-06-04
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： HE, Zhengyan , CHENG, Jiebin , WANG, Qinghai , LU, Yuliang
IPC分类号： H02M3/156
摘要： Embodiments of the present invention disclose a power converter and a related system. The power converter includes a controller and a power conversion circuit. The power conversion circuit is configured to convert an input power of an input power supply into an output power of a load, where the input power supply is an external power supply connected to the power converter. The controller is configured to control on/off of the first switch element, to implement connection/disconnection between the input power supply and the inductive element; and control the unidirectional conduction circuit to be turned on before the first switch element is turned on in the power conversion cycle, so that a closed loop is formed between the unidirectional conduction circuit and the inductive element, to complete reverse recovery of the first diode before the first switch element is turned on, and reduce a reverse recovery loss of the first diode. The embodiments of the present invention can be used to resolve a problem of a large reverse recovery loss of a diode in the prior art.

4. 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。

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