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公开(公告)号：US11139669B2
公开(公告)日：2021-10-05
申请号：US16379412
申请日：2019-04-09
发明人： Yunfeng Liu , Guojin Xu , Guoqiao Shen , Jinfa Zhang
摘要： A converter system and method is provided. The converter system includes a converter and a control module. The converter is electrically connected with a DC bus and a load. The converter is configured to realize the conversion between a bus voltage of the DC bus and a load voltage of the load. The control module is electrically coupled with the converter. When the converter is in a standby mode, the control module generates a first-side compensation signal according to the bus voltage and generates a second-side compensation signal according to the load voltage. And the control module generates an instruction current signal according to the first-side compensation signal, the second-side compensation signal and a reference current signal. The control module generates the driving signal according to the instruction current signal, so as to control an output current of the converter to be stable.
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公开(公告)号：US11417458B2
公开(公告)日：2022-08-16
申请号：US16197385
申请日：2018-11-21
发明人： Zengyi Lu , Tianding Hong , Haijun Yang , Jinfa Zhang
摘要： A magnetic component and a switch power supply device are disclosed. The magnetic component includes a magnetic core and at least three windings, the magnetic core including at least three winding columns, at least one side columns, a first cover plate and a second cover plate opposite to each other, wherein the at least three winding columns are sequentially arranged in adjacent, the first cover plate and the second cover plate are respectively at upper parts or lower parts of the at least three winding columns and the at least one side column to form a closed magnetic flux loop; the at least three windings are wound on the at least three winding columns, respectively; wherein magnetic flux direction of the middle winding column in adjacent three winding columns is opposite to magnetic fluxes direction of the other two winding columns in adjacent three winding columns.
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公开(公告)号：US11251625B2
公开(公告)日：2022-02-15
申请号：US16559733
申请日：2019-09-04
发明人： Hao Sun , Minli Jia , Jinfa Zhang
IPC分类号： H02J7/00 , H02J9/06 , H03K17/693 , H02M3/335
摘要： The present disclosure relates to a method and apparatus for charging and discharging. The apparatus includes: an AC power terminal, including first to third nodes, and a first center line node, and being configured to receive input an AC input or send an AC output; a power conversion stage, including fourth to sixth nodes, and a second center line node; a first bus capacitor and a second bus capacitor both coupled to the second center line node, the first center line node being coupled to the second center line node; a first switch set; a second switch set; a control module, coupled to the first switch set, the second switch set, the AC power terminal, and the power conversion stage.
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公开(公告)号：US10667421B2
公开(公告)日：2020-05-26
申请号：US16291057
申请日：2019-03-04
发明人： Guoqiao Shen , Jinfa Zhang , Linfeng Zhong , Qunbo Zheng
摘要： The present disclosure provides a high-voltage isolating device and method. The high-voltage isolating device includes a power module and a shelf. The power module's back panel is provided with a first connecting portion, and the power module's front panel is provided with a first fastening member. The shelf includes a module slot for accommodating the power module. The module slot's rear end is provided with a second connecting portion, and the module slot's front end is provided with a second fastening member. Wherein in a first status, the first connecting portion is matched and connected with the second connecting portion, and the first fastening member is away from the second fastening member, and in a second status, the first connecting portion is disconnected from the second connecting portion, and the first fastening member and the second fastening member are matched and connected together by a padlock.
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公开(公告)号：US10666148B2
公开(公告)日：2020-05-26
申请号：US15798560
申请日：2017-10-31
发明人： Guoqiao Shen , Jinfa Zhang
摘要： A control method, which is applied to a conversion circuit including at least one bridge arm and an inductor, the bridge arm including an upper semiconductor switch and a lower semiconductor switch connected in series, and one end of the inductor being connected to a midpoint of the bridge arm, includes: judging a direction of current of the inductor when a scram event occurs in the conversion circuit; turning on the upper semiconductor switch and turning off the lower semiconductor switch when the direction of current of the inductor is judged as a first direction, wherein the first direction is a forward conduction direction of the lower semiconductor switch; and turning off the upper semiconductor switch and turning on the lower semiconductor switch when the direction of current of the inductor is judged as a second direction.
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公开(公告)号：US10128765B2
公开(公告)日：2018-11-13
申请号：US15490144
申请日：2017-04-18
发明人： Hao Sun , Yueyong Meng , Lei Chang , Jinfa Zhang
IPC分类号： H02M3/335 , H03K7/08 , H03K9/08 , H02M1/00 , H03K5/1534
摘要： A multi-stage power converter includes a first-stage power conversion circuit, a second-stage power conversion circuit, a second-stage analogic sampler, a pulse width modulator, a first isolator, a pulse width analyzer and a control unit. The second-stage analogic sampler samples power parameter from the second-stage power conversion circuit. The pulse width modulator converts the power parameter into a pulse width modulation signal. The pulse width analyzer receives the pulse width modulation signal through the first isolator in an isolation manner, calculates a duty ratio of the pulse width modulation signal according to a rising edge and a falling edge of the pulse width modulation signal, and calculates the power parameter according to the duty ratio. The control unit controls operations of the second-stage power conversion circuit according to the power parameter that is obtained by the pulse width analyzer.
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公开(公告)号：US11955898B2
公开(公告)日：2024-04-09
申请号：US17368856
申请日：2021-07-07
发明人： Minli Jia , Hao Sun , Jinfa Zhang
CPC分类号： H02M3/33573 , H02J7/007 , H02J50/12 , H02M3/015 , H02M3/33584 , H02M3/33592 , H02M7/5387 , H02M1/0058 , H02M1/008
摘要： A charging and discharging device includes a transformer consisting of a primary winding and multiple secondary windings including at least a first secondary winding and a second secondary winding; multiple ports electrically connected to the primary winding and the multiple secondary windings of the transformer, respectively, wherein the multiple ports at least include a first port electrically connected to the primary winding via a first conversion circuit; a second port electrically connected to the first secondary winding via a second conversion circuit; and a third port electrically connected to the second secondary winding via a third conversion circuit; and a first controllable switch connected between the first conversion circuit and the primary winding.
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公开(公告)号：US11515084B2
公开(公告)日：2022-11-29
申请号：US16564054
申请日：2019-09-09
发明人： Tianding Hong , Zengyi Lu , Haijun Yang , Jinfa Zhang
IPC分类号： H01F38/14 , H02J50/10 , H01F27/32 , H01F27/40 , H01F27/28 , H01F27/245 , H01F27/36 , H02J7/02
摘要： The present disclosure provides a magnetic component including a winding, a first magnetic core and a circuit component, and a wireless power-transferring device including the magnetic component. The winding is formed by winding a coil, and having a first penetration portion at a middle portion of the winding. The first magnetic core is disposed at a side of the winding, and a first insulating support portion is disposed between the first magnetic core and the winding. The circuit component is located within the first penetration portion and electrically connected with the winding. Disposing the circuit component within the first penetration portion at the middle portion of the winding can effectively save space.
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公开(公告)号：US20220149744A1
公开(公告)日：2022-05-12
申请号：US17346681
申请日：2021-06-14
发明人： Laszlo Huber , Tomas Sadilek , Misha Kumar , Zhiyu Shen , Jinfa Zhang , Chia-Hsiong Huang , Peter Mantovanelli Barbosa
摘要： A DC/DC converter may be formed out of the combination of a first converter that is optimized to transfer energy from a voltage source to a load, and a second converter that receives a control signal derived from the load voltage to regulate the load voltage. The DC/DC converter may be configured as a sigma converter, a delta converter, or a sigma-delta converter. The mode of operation being selected according to the source voltage or the load voltage, either of which may vary over a wide range.
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公开(公告)号：US11005268B2
公开(公告)日：2021-05-11
申请号：US16361840
申请日：2019-03-22
发明人： Xuancai Zhu , Bingwen Weng , Jiao Zhang , Yanlong Li , Jinfa Zhang
摘要： The present disclosure provides an optimizer for a photovoltaic system, a control method for an optimizer, and an optimizer parallel arrangement thereof. In the method, a DC bus voltage output by the optimizer is acquired; and the optimizer is controlled to switch among an MPPT mode, a limited power mode and a fast shutdown mode based on the DC bus voltage.
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