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公开(公告)号：EP4443724A1
公开(公告)日：2024-10-09
申请号：EP24163704.0
申请日：2024-03-15
发明人： LIU, Hong , ZHANG, Wen , SONG, Baihui
CPC分类号： H02M1/0003 , H02M3/01 , H02M7/4807 , H02M3/33569
摘要： The disclosure discloses a DC bias suppression method (100) and a high-frequency power conversion circuit (10, 20, 30, 40) using the same. The high-frequency power conversion circuit (C2) includes a high-frequency AC port, a switching circuit (S1, S2, S3, S4), a DC port and a power source (Source) connected sequentially, and the DC bias suppression method includes: acquiring voltage information (V1, V2) or current information (I1, I2) of the DC port at N times, where N≥2; obtaining a corresponding first voltage difference (ErrV) or a corresponding first current difference (ErrI) according to the voltage information (V1, V2) or the current information (I1, I2) at the N times; regulating a duty ratio of a driving signal (M) according to the first voltage difference (ErrV) or the first current difference (ErrI); and regulating duty ratios of switching tubes (S1, S2, S3, S4) in the switching circuit according to the driving signal (M).
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公开(公告)号：EP4340201A1
公开(公告)日：2024-03-20
申请号：EP23196725.8
申请日：2023-09-12
发明人： WANG, Xiaolei
摘要： The present disclosure discloses a method and a system for controlling a switching power supply, the switching power supply comprising a power factor correction circuit which comprises at least one electrolytic capacitor, the method comprising: detecting a ripple voltage of the electrolytic capacitor; controlling an actual output power of the switching power supply to be equal to a reference output power based on the ripple voltage of the electrolytic capacitor, wherein the reference output power equals to a compensated output power or an upper limit output power, and wherein the compensated output power is obtained by comparing the ripple voltage of the electrolytic capacitor with a reference voltage and subjecting to a compensation calculation. The reference output power is a smaller one of the compensated output power and the upper limit output power.
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公开(公告)号：EP4307546A2
公开(公告)日：2024-01-17
申请号：EP23213409.8
申请日：2022-01-24
发明人： YE, Yiqing , ZHOU, Yuan , BAO, Huayao
IPC分类号： H02M3/07
摘要： The disclosure provides a non-isolated hybrid resonance circuit for powering a load by converted voltage, including: a full-wave rectifier circuit connected in parallel to the load, and having a first and second rectifying branch connected in parallel, each rectifying branch having a rectifying switch and a winding connected in series; a first switching circuit connected between the first end of the power supply and the first end of the load, and including a first and second switch connected in series; and a first resonant unit electrically coupled between the first connection node formed by the first and second switch connected in series and the midpoint of the first rectifying branch, wherein the windings of the first and second rectifying branches are coupled to each other. The conversion circuit provided by the disclosure can realize an odd voltage conversion ratio, and can reduce loss and volume of the transformer.
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公开(公告)号：EP4277102A1
公开(公告)日：2023-11-15
申请号：EP23167942.4
申请日：2023-04-14
发明人： Lu, Hao , Zhang, Yifan , Cai, Yili , Bao, Licheng , Sun, Jia
摘要： A DC/DC converter (1, 1a, 1b, 1c) includes a switching circuit (3) and a capacitor (C1). The switching circuit (3) includes a first bridge arm and a second bridge arm connected in parallel. The first bridge arm includes a first switch (S1) and a second switch (S2). The second bridge arm includes a third switch (S3) and a fourth switch (S4). The capacitor (Cl) is electrically connected with a node (a) between the first switch (S1) and the second switch (S2). While the switching circuit (3) is switched from a half-bridge mode to a full-bridge mode, the duty cycle of the control signal for controlling the fourth switch (S4) is gradually decreased from 100% to be synchronized with the duty cycle of the control signal for controlling the first switch (S1). Then, the duty cycle of the control signal for controlling the third switch (S3) is gradually increased from zero to be synchronized with the duty cycle of the control signal for controlling the second switch (S2).
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公开(公告)号：EP4216244A1
公开(公告)日：2023-07-26
申请号：EP23152556.9
申请日：2023-01-19
发明人： HONG, Shouyu , CHEN, Qingdong , BI, Shuairan , WAN, Qian , WANG, Zengsheng , ZHOU, Ganyu , FU, Zhiheng , ZHOU, Jinping , YE, Yiqing
摘要： The present disclosure provides a magnetic element, including: a magnetic column (91, 92) extending along a first direction (43); a first winding (45) surrounding the magnetic column, connected to a first terminal (29, 212) located on a first side of the magnetic element, and the first terminal has a first projection of the first terminal on a first side surface of the magnetic element; and a second winding (46) surrounding the magnetic column and at least partially outside the first winding, wherein the second winding has a first projection of the second winding on the first side surface of the magnetic element, the first projection of the first terminal is at least partially outside the first projection of the second winding, the second winding is a flatwise-wound winding, and the number of turns of the first winding is greater than or equal to the number of turns of the second winding.
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6.发明公开
公开(公告)号：EP4156431A1
公开(公告)日：2023-03-29
申请号：EP22191158.9
申请日：2022-08-19
发明人： YAN, Chao , DAI, Fugui
摘要： The disclosure provides a method, system and device for controlling power sharing of a cluster of charging piles, comprising calculating a remaining power of the cluster at a current time according a total power upper limit of the cluster at the current time, a total number of charging piles of the cluster at the current time and an actual output power of each charging pile; calculating a weight of each charging pile for distributing the remaining power according to performance state of each charging pile; and obtaining a power output upper limit distributed to each charging pile at the next time according to the remaining power at the current time, the weight and the actual output power of each charging pile. The disclosure automatically adjusts the power output upper limit distributed to each charging pile in real time, thereby improving equipment utilization and load utilization of the charging station.
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公开(公告)号：EP4064562A1
公开(公告)日：2022-09-28
申请号：EP22163223.5
申请日：2022-03-21
发明人： DONG, Jie , XU, Zhenqing , ZHANG, Weiqiang
IPC分类号： H03K17/06
摘要： The present invention provides a driving device and a control method. The driving device is configured to drive a power switch and includes a power supply, a first bridge arm coupled to the power supply, a second bridge arm coupled in parallel to the first bridge arm, and a resonant inductor. The first bridge arm includes a first switch and a second switch connected to a first midpoint, the second bridge arm comprises a first semiconductor element and a second semiconductor element connected to a second midpoint, and the resonant inductor is coupled between the first midpoint and the second midpoint. The control method includes turning on the first switch for a first period such that the power supply charges a gate electrode of the power switch; and in response to a decrease of a current of the resonant inductor to a first threshold value, turning on the first switch again for a second period such that a potential of the first midpoint is equal to a potential of the second midpoint.
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公开(公告)号：EP4057343A2
公开(公告)日：2022-09-14
申请号：EP22158193.7
申请日：2022-02-23
发明人： Hong, Shouyu , Ye, Yiqing , Xu, Haibin , Zhou, Weicheng , Wang, Tao , Zhou, Min , Xie, Yicong , Wang, Zengsheng
摘要： A switching module (1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1k, 11, 1m) includes a substrate (2), a switching element (3), a first control part (4), a second control part (5), a first power part (6) and a second power part (7). The switching element (3) is disposed on the substrate (2). The switching element (3) includes a first control terminal (31), a second control terminal (32), a first power terminal (32) and a second power terminal (33). The first control part (4) is connected with the first control terminal (31) of the switching element (3). The second control part (5) is connected with the second control terminal (32) of the switching element (3). A projection area of the first control part (4) on a reference plane intersects with a projection area of the second control part (5) on the reference plane at one or more first intersections (O). The first power part (6) is connected with the first power terminal (32) of the switching element (3). The second power part (7) is connected with the second power terminal (33) of the switching element (3).
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公开(公告)号：EP4024690A1
公开(公告)日：2022-07-06
申请号：EP21208749.8
申请日：2021-11-17
发明人： Yan, Chao , Xia, Tao , Zhan, Kailiang , Liu, Xinwei
摘要： A three-phase converter (1) and a control method thereof are provided. The three-phase converter (1) includes an AC terminal (11), three filter circuits (14), three bridge arm circuits (13), a capacitor module (15) and a DC terminal (12) connected in sequence and a controller. The midpoints (141) of the filter circuits (14) are connected to the midpoint (151) of the capacitor module (15). The controller controls each bridge arm circuit (13) to work in the first and second modes (Ml, M2) at different time in one line voltage cycle of the AC source (VR, VS, VT). In the first mode (Ml), the bridge arm circuit (13) works in a clamping state. In the second mode (M2), the bridge arm circuit (13) selectively works in a DCM mode or a TCM mode. A switching frequency (fs) is limited to be lower than a preset frequency (fmax). When the three-phase converter (1) works with over 80% of a rated load, a time length of working in the second mode (M2) is 1/3~2/3 of the line voltage cycle.
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公开(公告)号：EP3955452A1
公开(公告)日：2022-02-16
申请号：EP21187767.5
申请日：2021-07-26
IPC分类号： H02M7/501 , H02M7/25 , H02M7/49 , H02M7/5387 , H02M1/00
摘要： The present application provides a conversion system and a control method, including N power converters and N controllers, and N controllers one-to-one corresponds to the N power converters. In addition to receiving a first side current and a second side voltage of a corresponding power converter, each of the N controllers can also receive a neighboring direct current voltage signal which only reflects second side voltages of other M power converters in the conversion system, and perform voltage control on the corresponding power converter according to the received signal. The present application adopts fully distributed control, and does not need to set up a centralized controller. When parts of controllers fail, the other controllers can continue to work, so the reliability is higher. In addition, each controller only receives the voltage signal of an adjacent power converter, which can greatly reduce the number of connections between the controllers and further improve the reliability of the conversion system. In addition, there is no centralized controller, and the modular design is implemented, which is conducive to the expansion of the conversion system.
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