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1. 发明申请

WO2019057203A1 POWER SUPPLY SYSTEM WITH REDUCED BULK CAPACITANCE 审中-公开
公开(公告)号：WO2019057203A1
公开(公告)日：2019-03-28
申请号：PCT/CN2018/107338
申请日：2018-09-25
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： DAI, Heping , YE, Liming
IPC分类号： H02M1/00
摘要： A power supply system (100) includes a front-end stage (102), a boost apparatus (104) and a power conversion stage (106). A method comprises detecting a voltage across a bulk capacitor of a power supply system, wherein the power supply system comprises a rectifier, a boost apparatus and a power converter, and wherein the bulk capacitor is between the boost apparatus and the power converter, activating the boost apparatus after the voltage across the bulk capacitor decreases and reaches a first voltage threshold and disabling the boost apparatus after the voltage across the bulk capacitor increases and reaches a second voltage threshold, wherein the second voltage threshold is greater than the first voltage threshold.

2. 发明申请

WO2016078590A1 ZERO VOLTAGE SWITCHING DETECTION APPARATUS AND METHOD 审中-公开
标题翻译：零电压开关检测装置及方法
公开(公告)号：WO2016078590A1
公开(公告)日：2016-05-26
申请号：PCT/CN2015/094944
申请日：2015-11-18
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： HUANG, Jinbo , LIU, Xujun , FU, Dianbo , YE, Liming , DAI, Heping , CHEN, Daoshen
IPC分类号： H02M3/155 , H02M3/335
CPC分类号： H02M3/33507 , H02M3/158 , H02M3/1582 , H02M2001/0009 , H02M2001/0058 , Y02B70/1425 , Y02B70/1433 , Y02B70/1491
摘要： A converter (100) comprises a switch network (102) coupled to a power source (101), wherein the switch network (102) comprises a plurality of power switches, a magnetic device (106) coupled to the switch network (102), a detector (104) coupled to the magnetic device (106) through a magnetic coupling and a control circuit (105) configured to receive a zero voltage switching signal from the detector (104) and adjust gate drive signals of the power switches based upon the zero voltage switching signal. A method further comprises detecting a signal indicating a soft switching process of a power switch of the switch network (102) and turning on the power switch after a magnitude of the signal is less than a predetermined threshold. An advantage of the present invention is the efficiency of a dc/dc converter can be improved by turning on a power switch through a zero voltage transition.
摘要翻译： A转换器（100）包括耦合到电源（101）的开关网络（102），其中开关网络（102）包括多个电源开关，耦合到开关网络（102）的磁性装置（106）通过磁耦合耦合到磁性装置（106）的检测器（104）和被配置为从检测器（104）接收零电压切换信号的控制电路（105），并且基于所述检测器（104）调节功率开关的栅极驱动信号零电压开关信号。一种方法还包括检测指示开关网络（102）的电源开关的软开关处理的信号，并且在信号的幅度小于预定阈值之后接通电源开关。本发明的一个优点是可以通过在零电压转换上接通电源开关来提高dc / dc转换器的效率。

3. 发明申请

WO2013037309A1 ADAPTIVE DEAD TIME CONTROL APPARATUS AND METHOD FOR SWITCHING POWER CONVERTERS 审中-公开
标题翻译：自适应死时间控制装置和切换电力转换器的方法
公开(公告)号：WO2013037309A1
公开(公告)日：2013-03-21
申请号：PCT/CN2012/081402
申请日：2012-09-14
申请人： HUAWEI TECHNOLOGIES CO., LTD. , YE, Liming , MAO, Hengchun
发明人： YE, Liming , MAO, Hengchun
IPC分类号： H02M7/217
CPC分类号： H02M3/3353 , H02M1/38 , H02M3/33546
摘要： An embodiment apparatus comprises a secondary synchronous rectifier (110) and a secondary gate drive controller (102) coupled to a transformer winding. The secondary gate drive controller (102) is configured to generate a forward gate drive signal for the forward switch ( Qm ) and generate a freewheeling gate drive signal for the freewheeling switch ( QFW ), wherein the secondary gate drive controller (102) generates a dead time between the forward gate drive signal and the freewheeling gate drive signal.
摘要翻译：实施例装置包括二次同步整流器（110）和耦合到变压器绕组的次级栅极驱动控制器（102）。次级栅极驱动控制器（102）被配置为产生用于正向开关（Qm）的正向栅极驱动信号并产生用于续流开关（QFW）的续流栅极驱动信号，其中辅助栅极驱动控制器（102）产生正向栅极驱动信号和续流栅极驱动信号之间的死区时间。

4. 发明申请

WO2020106324A1 AC-DC 3-LEVEL CONVERSION SYSTEM WITH HF INTERMEDIATE AC AND TWO SEPARATE OUTPUTS 审中-公开
公开(公告)号：WO2020106324A1
公开(公告)日：2020-05-28
申请号：PCT/US2019/039898
申请日：2019-06-28
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： ZHU, Huibin , DAI, Heping , YE, Liming
IPC分类号： H02M1/42 , H02M3/335 , H02M7/487 , H02M1/00 , H02M7/48
摘要： A power conversion system includes a first power conversion port including a three-level power factor correction device and a primary power conversion circuit, a second power conversion port including a three-level rectifier and a third power conversion port including a rectifier, the first power conversion port, the second power conversion port and the third power conversion port magnetically coupled to each other through a transformer.

5. 发明申请

WO2015055139A1 APPARATUS AND METHOD FOR HIGH EFFICIENCY RESONANT CONVERTERS 审中-公开
标题翻译：高效谐振转换器的装置和方法
公开(公告)号：WO2015055139A1
公开(公告)日：2015-04-23
申请号：PCT/CN2014/088828
申请日：2014-10-17
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： CHEN, Daoshen , DAI, Heping , LIU, Xujun , LIU, Zhihua , YE, Liming , FU, Dianbo , LIU, Ce , CAI, Bing
IPC分类号： H02M3/335 , H02M3/28
CPC分类号： H02M3/33507 , H02M1/14 , H02M3/156 , H02M3/22 , H02M3/325 , H02M3/33523 , H02M3/33569 , H02M3/33576 , H02M3/33592 , H02M3/337 , H02M3/3376 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A converter comprises an input stage coupled to a power source, wherein the input stage comprises a plurality of power switches, a resonant tank coupled to the plurality of power switches, a transformer coupled to the resonant tank, an output stage coupled to the transformer, an efficiency point tracking indicator coupled to the converter, a detector coupled to the efficiency point tracking indicator and a control circuit configured to receive an efficiency point tracking signal from the detector and adjust a switching frequency of the power switches based upon the efficiency point tracking signal.
摘要翻译： A转换器包括耦合到电源的输入级，其中所述输入级包括多个功率开关，耦合到所述多个功率开关的谐振槽，耦合到所述谐振回路的变压器，耦合到所述变压器的输出级，耦合到转换器的效率点跟踪指示器，耦合到效率点跟踪指示器的检测器和被配置为从检测器接收效率点跟踪信号的控制电路，并且基于效率点跟踪信号调整功率开关的开关频率。

6. 发明申请

WO2013037308A1 SOFT TRANSITION APPARATUS AND METHOD FOR SWITCHING POWER CONVERTERS 审中-公开
标题翻译：软转换装置和切换电力转换器的方法
公开(公告)号：WO2013037308A1
公开(公告)日：2013-03-21
申请号：PCT/CN2012/081400
申请日：2012-09-14
申请人： HUAWEI TECHNOLOGIES CO., LTD. , YE, Liming , MAO, Hengchun , LIU, Xunjun
发明人： YE, Liming , MAO, Hengchun , LIU, Xunjun
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M1/36 , Y02B70/1475
摘要： A soft transition apparatus comprises a secondary synchronous rectifier (110) and a secondary gate drive controller (102). The secondary synchronous rectifier (110) comprises a forward switch (QFR) and a freewheeling switch (QFW). The secondary gate drive controller (102) coupled to a transformer winding comprises a secondary synchronous rectifier soft start signal generator configured to generate a plurality of soft start pulses, a pulse width modulation (PWM) generator configured to generate a forward switch drive signal and a freewheeling switch drive signal based upon a signal across the transformer winding and a soft transition generator configured to generate a soft start freewheeling switch drive signal by gradually releasing the freewheeling switch drive signal during a soft start process.
摘要翻译：软转换装置包括二次同步整流器（110）和次级栅极驱动控制器（102）。次级同步整流器（110）包括正向开关（QFR）和续流开关（QFW）。耦合到变压器绕组的次级栅极驱动控制器（102）包括被配置为产生多个软启动脉冲的次同步整流器软启动信号发生器，被配置为产生正向开关驱动信号的脉宽调制（PWM）发生器和基于变压器绕组上的信号的续流开关驱动信号和被配置为通过在软启动过程中逐渐释放续流开关驱动信号来产生软启动续流开关驱动信号的软转换发生器。

7. 发明申请

WO2018149375A1 DISTRIBUTED/CENTRAL OPTIMIZER ARCHITECTURE 审中-公开
公开(公告)号：WO2018149375A1
公开(公告)日：2018-08-23
申请号：PCT/CN2018/076264
申请日：2018-02-11
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： DAI, Heping , YE, Liming , FU, Dianbo , MAO, Xiaolin
IPC分类号： H02J3/38
摘要： The disclosure relates to technology for providing power, voltage, and/or current from a combination of photovoltaic modules. In one aspect, a system has central power optimizer, which is located between a group of distributed power optimizers and a solar inverter. Each distributed power optimizer may be connected to the DC output of one photovoltaic modules, and may be used to regulate the power output of the photovoltaic module. The combined DC voltages of the distributed power optimizers may be provided to the input of the central power optimizer.

8. 发明申请

WO2016202244A1 CONTROL METHOD FOR BUCK-BOOST POWER CONVERTERS 审中-公开
标题翻译： BUCK-BOOST功率转换器的控制方法
公开(公告)号：WO2016202244A1
公开(公告)日：2016-12-22
申请号：PCT/CN2016/085746
申请日：2016-06-14
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： YE, Liming , HUANG, Jinbo , DAI, Heping , FU, Dianbo , CHEN, Daoshen
IPC分类号： H02M3/155
CPC分类号： H02M3/1582 , H02M2001/0025 , H02M2001/0032 , H02M2001/0058 , Y02B70/1425 , Y02B70/1491 , Y02B70/16
摘要： A method comprises generating a first ramp signal (S1) and a second ramp signal (S2) for controlling a buck converter portion and a boost converter portion of a buck-boost converter (100) respectively, comparing the first ramp signal (S1) and the second ramp signal (S2) to a control signal, controlling the buck converter portion using the comparing the first ramp signal (S1) to the control signal and the boost converter portion using the comparing the second ramp signal (S2) to the control signal, comparing a current flowing through the inductor (L1) to a current threshold (iLth2) and terminating a switching cycle based upon the comparing the current flowing through the inductor (L1) to the current threshold (iLth2).
摘要翻译：一种方法包括：分别对降压 - 升压转换器（100）的降压转换器部分和升压转换器部分分别进行控制，以将第一斜坡信号（S1）和第二斜坡信号（S1）和将所述第二斜坡信号（S2）提供给控制信号，使用通过将所述第二斜坡信号（S2）与所述控制信号（S2）进行比较来将所述第一斜坡信号（S1）与所述控制信号和所述升压转换器部分进行比较来控制所述降压转换器部分将流过电感器（L1）的电流与电流阈值（iLth2）进行比较，并基于将流过电感器（L1）的电流与电流阈值（iLth2）进行比较来终止开关周期。

9. 发明申请

WO2020112207A3 SWITCHED-CAPACITOR POWER CONVERSION SYSTEM AND CONTROL METHOD 审中-公开
公开(公告)号：WO2020112207A3
公开(公告)日：2020-06-04
申请号：PCT/US2019/050499
申请日：2019-09-11
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： YE, Liming , DAI, Heping , FU, Dianbo
IPC分类号： H02M3/07 , H02M1/00 , H02M3/158 , H02M3/00 , H02M7/487
摘要： A system includes a first switched-capacitor converter including a plurality of switches connected in series, a second switched-capacitor converter, and a third switched-capacitor converter connected in parallel with the second switched-capacitor converter between a common node of two switches of the plurality of switches and a load, the second switched-capacitor converter and the third switched-capacitor converter both including inductors.

10. 发明申请

WO2020106352A3 THREE-LEVEL POWER CONVERTER AND CONTROL METHOD 审中-公开
公开(公告)号：WO2020106352A3
公开(公告)日：2020-05-28
申请号：PCT/US2019/050545
申请日：2019-09-11
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： YE, Liming , DAI, Heping , WANG, Ning , YE, Gang
IPC分类号： H02M7/483 , H02M3/07 , H02M7/487 , H02M1/00
摘要： A method includes detecting a voltage signal of a three-level power converter, the voltage signal indicative of a capacitor voltage balancing in the three-level power converter, and dynamically adjusting an operating variable to adjust the voltage signal until the capacitor voltage balancing in the three-level power converter satisfies a criteria.

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