Patents Assigned to Delta Electronics
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Patent number: 11601042Abstract: The present disclosure provides a three-phase AC/DC converter aiming for low input current harmonic. The converter includes an input stage for receiving a three-phase AC input voltage, an output stage for at least one load, and one or more switching conversion stages, each stage including a plurality of half bridge modules. The switches in each module operate with a substantially fixed 50% duty cycle and are connected in a specific pattern to couple a DC-link and a neutral node of the input voltage. The AC/DC converter further includes one or more controllers adapted to vary the switching frequency of the switches in the switching conversion stages based on at least one of load voltage, load current, input voltage, and DC-link voltage. The converter can also include one or more decoupling stages, such as, inductive components adapted to decouple the output stage from the switching conversion stages.Type: GrantFiled: March 22, 2021Date of Patent: March 7, 2023Assignee: Delta Electronics, Inc.Inventors: Chi Zhang, Zhiyu Shen, Yungtaek Jang, Sheng-Hua Li, Ruxi Wang, Peter Mantovanelli Barbosa
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Patent number: 11600423Abstract: The present disclosure provides a transformer including at least one magnetic core each having at least one window; one primary side winding passing through the at least one window, a wire forming the primary side winding being sequentially covered with a first solid insulating layer, a grounded shielding layer and a second solid insulating layer from inside to outside along a radial direction of the wire, the grounded shielding layer being connected to a reference ground; and at least one secondary side winding, each passing through the at least one window, the primary side winding having a first voltage with respect to the reference ground, the secondary side winding having a second voltage with respect to the reference ground, and the second voltage being greater than 50 times of the first voltage.Type: GrantFiled: May 6, 2019Date of Patent: March 7, 2023Assignee: Delta Electronics, Inc.Inventors: Peng Ma, Yicong Xie, Lin Lan, Weiqiang Zhang
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Publication number: 20230068564Abstract: An electrical conversion system includes: an inductor electrically connected to an alternating current (AC) power grid; a medium voltage direct current (MVDC) bus; a non-isolated AC/DC converter, provided with a first terminal electrically connected to the inductor and a second terminal electrically connected to the MVDC bus, wherein the non-isolated AC/DC converter is configured to output a bus voltage based on an input voltage from the AC power grid; a plurality of circuit branches connected in parallel, wherein each circuit branch is connected to the MVDC bus via a corresponding converter; and a filtering network disposed between the AC power grid and the MVDC bus and is grounded through at least one capacitor.Type: ApplicationFiled: October 27, 2022Publication date: March 2, 2023Applicant: Delta Electronics (Shanghai) CO., LTDInventors: Teng LIU, Jianping YING, Lifeng QIAO, Xin WANG, Hongwei XIAO
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Patent number: 11594952Abstract: An auxiliary power supply device for an inverter with a plurality of power modules connected in parallel is disclosed. The auxiliary power supply device includes: a plurality of soft-start circuits, each coupled to a DC port of a corresponding power module; a plurality of distributed auxiliary power supplies, each having an input terminal coupled to the DC port of the corresponding power module; and a centralized auxiliary power supply having an input terminal coupled to an AC side of the inverter, and an output terminal coupled to a DC side of the inverter. By replacing auxiliary power supplies on the AC sides of all power modules with the centralized auxiliary power supply and omitting soft-start circuits on the AC sides of all power modules, the present invention improves system performance in cost, volume, loss, and electromagnetic compatibility.Type: GrantFiled: August 11, 2021Date of Patent: February 28, 2023Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Chao Zhang, Wei Guan, Hongyang Wu, Feiqin Hao, Fayang Jiang
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Patent number: 11594973Abstract: A bidirectional DC-DC converter with three or more ports is described along with a method of operation thereof. The converter utilizes a common transformer for all ports and allows for power transfer from any port to any or all of the remaining ports. The converter may utilize a controller which implements variable-frequency control, delay-time control, and/or phase-delay control to achieve power transfer as desired between the converter ports. In some cases, power transfer between ports can operate similar to a series-resonant converter or a dual active bridge converter.Type: GrantFiled: December 16, 2020Date of Patent: February 28, 2023Assignee: Delta Electronics Inc.Inventors: Misha Kumar, Yungtaek Jang, Peter Mantovanelli Barbosa, Minli Jia, Hao Sun
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Publication number: 20230059607Abstract: The present disclosure provides an assembly structure for providing power for a chip. The assembly structure includes a circuit board configured to provide a first electrical energy; a chip provided with at least one electrical energy input terminal; and a first power converting module provided with at least one power output terminal. The first power converting module is electrically connected to the circuit board and the chip, converts the first electrical energy to a second electrical energy, and supplies the second electrical energy to the chip. The circuit board, the chip and the first power converting module are stacked; and a projection of the at least one electrical energy input terminal of the chip on the circuit board and a projection of the at least one the power output terminal of the first power converting module on the circuit board, are at least partially overlapped.Type: ApplicationFiled: October 10, 2022Publication date: February 23, 2023Applicant: Delta Electronics,Inc.Inventors: Haoyi YE, Jianhong ZENG, Yu ZHANG, Peiqing HU, Ziying ZHOU
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Patent number: 11587718Abstract: This disclosure provides an integrated transformer and a power converter, the integrated transformer includes: a magnetic core, including an upper cover, a lower cover, a first winding column and a second winding column; a printed wiring board, disposed between the upper cover and the lower cover, and including a first through hole corresponding to the first winding column and a second through hole corresponding to the second winding column; and a first winding, a second winding, a third winding and a fourth winding; the first winding and the third winding are wound on the first winding column and the second winding column respectively, the second winding and the fourth winding are provided at positions corresponding to the first through hole and the second through hole on the printed wiring board, and magnetic flux directions within the first winding column and the second winding column are opposite.Type: GrantFiled: December 17, 2020Date of Patent: February 21, 2023Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Baohua Wang, Tengfei Yang
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Patent number: 11588337Abstract: The present disclosure provides a centralized charging cabinet, including: a charging cabinet, provided with an isolation area and a charging area therein; an isolation transformer, provided in the isolation area; and at least one charging unit, provided in the charging area, where each of the charging unit is electrically connected to a secondary winding of the isolation transformer through a plurality of first connection structures, and the plurality of first connection structures are located at a back region of the charging area. In the centralized charging cabinet, the isolation transformer is provided in the isolation area inside the charging cabinet, the charging unit is provided in the charging area inside the charging cabinet, which realizes a centralized layout of the isolation transformer and the charging unit and improves the space utilization.Type: GrantFiled: April 16, 2020Date of Patent: February 21, 2023Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Hongyang Wu, Jian Zhu, Liping Sun, Chao Yan, Qianfeng Li
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Patent number: 11581119Abstract: A magnetic device comprises two base portions and magnetic pillars, wherein each of the two base portions has a first surface and the two first surfaces are faced to each other, and the magnetic pillars are disposed between the two first surfaces along a first direction, wherein, in the first direction, two of the magnetic pillars located at the outermost side of the base portion are a first corner pillar and a second corner pillar respectively, n of the magnetic pillars having the same cross-sectional area and located at the center position of the base portion are n center pillars, and cross-sectional area of the magnetic pillars are gradually increased from the first corner pillar to the center pillar closest to the first corner pillar, and from the second corner pillar to the center pillar closest to the second corner pillar.Type: GrantFiled: January 13, 2020Date of Patent: February 14, 2023Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Haibin Song, Qi Fu, Daofei Xu, Jinfa Zhang
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Patent number: 11581118Abstract: A transformer includes two first cores, a primary winding and a secondary winding. The secondary winding has a first section and a second section. The first section has a first outlet end, a second outlet end, and a first connection end, wherein the first outlet end and the second outlet end are located at a side of the first section, the first connection end is located at an opposite side of the first section. The second section has a third outlet end, a fourth outlet end, and a second connection end. The third outlet end and the fourth outlet end are located at a side of the second section, and the second connection end is located at an opposite side of the second section. A portion of the primary winding is located between the first section and the second section of the secondary winding.Type: GrantFiled: December 30, 2019Date of Patent: February 14, 2023Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Zeng-Yi Lu, Hai-Jun Yang
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Patent number: 11574772Abstract: A transformer comprises at least two windings and each of the at least two windings includes at least one lead-out wire, and a silicone rubber heat-shrinkable sleeve is wrapped around the outer surface of the lead-out wire. The at least two windings and a portion of the silicone rubber heat-shrinkable sleeve are encapsulated in a potting box with a first potting sealant, and another portion of the silicone rubber heat-shrinkable sleeve is exposed outside of the potting box.Type: GrantFiled: March 31, 2020Date of Patent: February 7, 2023Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Yong Zeng, Jianxing Dong, Qiang Wang, Weijun Wang, Teng Liu
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Patent number: 11575312Abstract: Embodiments of the present disclosure provide an insulation monitoring device applied to a power system and a power system. The power system includes at least one power electronic converter module. The insulation monitoring device includes an insulation component, a signal source, an impedance module, and a monitoring module. The insulation component at least partially wraps around the power electronic converter module. The signal source is electrically coupled to a circuit node in the power electronic converter module, the impedance module is connected between the signal source and the insulation component, and the monitoring module is configured to monitor an insulation resistance value of the insulation component, so that an insulation state of the power electronic converter module may be determined.Type: GrantFiled: July 16, 2020Date of Patent: February 7, 2023Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Yicong Xie, Weiqiang Zhang, Peng Ma, Wei Zhou
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Patent number: 11569731Abstract: The present disclosure provides a control method for an AC-DC conversion circuit. The method includes: in an entire load range, acquiring circuit parameter information of the AC-DC conversion circuit; limiting an actual switching frequency or an actual switching period of the AC-DC conversion circuit within a preset working range according to the circuit parameter information. The AC-DC conversion circuit can meet requirements of Total Harmonic Distortion (THD), Power Factor (PF), efficiency and Electromagnetic Interference (EMI) and the like by adjusting the working information of the AC-DC conversion circuit through the preset working range.Type: GrantFiled: April 14, 2022Date of Patent: January 31, 2023Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Kai Dong, Lin Wang, Shuailin Du, Junhao Ji, Hui Huang
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Patent number: 11552039Abstract: The present disclosure relates to an embedded packaging module comprising a first semiconductor device, a first packaging layer and a first wiring layer, the first semiconductor device having a first and a second face, at least two positioning bulges and at least one bonding pad being provided on the first face of the first semiconductor device; the first packaging layer being formed on both the first face and a surface adjacent to the first face, the positioning bulges being positioned in the first packaging layer, at least one first via hole being provided in the first packaging layer, the bottom of the first via hole being positioned in the bonding pad and contacting with the bonding pad; the first wiring layer being positioned on the side of the first packaging layer away from the first semiconductor device and being electrically connected with the bonding pad through the first via hole.Type: GrantFiled: December 30, 2019Date of Patent: January 10, 2023Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Zengsheng Wang, Xuetao Guo, Kai Lu, Hui Li
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Patent number: 11539284Abstract: The present disclosure provides a DC conversion system and a control method thereof. The DC conversion system comprises: an upper power module group, a lower power module group, input terminals of the upper and lower power module group are connected in series, and output terminals of the upper and lower power module groups are connected in parallel; the controller configured to receive an input voltage of respective input terminal of each of the first and second power modules, a first output current of the output terminal of the upper power module group, a second output current of the output terminal of the lower power module group, and a total output signal of the output terminal of the DC conversion system, and generate a modulation signal according to them to control a power switch of the corresponding power module.Type: GrantFiled: May 28, 2021Date of Patent: December 27, 2022Assignee: Delta Electronics (Shanghai) CO., LTD.Inventors: Yi Zhang, Pian Zhou, Hongwei Xiao, Teng Liu
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Publication number: 20220406515Abstract: The present disclose provides a magnetic assembly and a power module. In one aspect, the magnetic assembly includes a magnetic core having a first magnetic leg and a second magnetic leg spatially separated from the first magnetic leg to define a spatial channel therebetween, and a winding assembly comprising a first winding, a second winding, and a third winding. The first and second windings are wound around the first magnetic leg with at least a part of the first and second windings being accommodated within the spatial channel. The third winding is wound around the first and second magnetic legs. The first winding is disposed between the first magnetic leg and the second winding. The second winding is disposed between the first winding and the third winding.Type: ApplicationFiled: January 17, 2022Publication date: December 22, 2022Applicant: Delta Electronics (Shanghai) Co., Ltd.Inventors: Haijun YANG, Tianding HONG, Warda GUL, Zengyi LU, Minli JIA, Jinfa ZHANG
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Patent number: 11532538Abstract: The present disclosure relates to a component structure, a power module and a power module assembly structure having the component structure. The component structure comprises: a first bus bar, having one end extending to a first plane to form a first connecting terminal; a second bus bar, comprising a front portion of the second bus bar and a rear portion of the second bus bar, wherein the front portion of the second bus bar is laminated in parallel with the first bus bar, and the rear portion of the second bus bar is extended to a second plane to form a second connecting terminal; and an external circuit comprising a third bus bar, wherein the third bus bar is settled in parallel with the rear portion of the second bus bar, to reduce a parasitic inductance between the first connecting terminal and the second connecting terminal.Type: GrantFiled: June 3, 2020Date of Patent: December 20, 2022Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Shouyu Hong, Juan Cheng, Tao Wang, Zhenqing Zhao
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Patent number: 11532935Abstract: The present disclosure provides a rapid shutdown device for a photovoltaic system, which is connected between a photovoltaic power generation module and a photovoltaic inverter and comprises an input port and an output port. The rapid shutdown device further comprises: a first switch and a second switch; a third switch and a fourth switch; a controller coupled to control terminals of the first switch, the third switch, and the fourth switch, and configured to control on and off of the first switch, the third switch, and the fourth switch, so that the rapid shutdown device operates in a normal state, a bypass state or a shutdown state.Type: GrantFiled: March 2, 2021Date of Patent: December 20, 2022Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Xuancai Zhu, Bingwen Weng, Yuxi Wang, Bin Wang, Chengjun He
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Patent number: 11533819Abstract: A method for manufacturing a stack structure comprises: providing a lead frame having a metal frame, at least two metal plate portions and a plurality of connection ribs, the connection ribs each comprises a first end, a second end and a connection portion; directly mounting electronic components for constructing two modules on the metal plate portions; packaging the electronic components of the first module, the first ends of the metal connection components which are electrically connected to the first module and the first ends of the part of the connection ribs which are electrically connected to the first module are packaged therein; removing the metal frame and part or whole of the connection ribs, the remaining connection ribs forms pins; and bending the metal connection component so that the two modules connected by the metal connection components are stacked one upon the other, to form the stack structure.Type: GrantFiled: May 7, 2019Date of Patent: December 20, 2022Assignee: Delta Electronics, Inc.Inventors: Le Liang, Zhenqing Zhao
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Patent number: 11525848Abstract: The present disclosure discloses a current detecting circuit of a power converter, which includes a transformer including: a magnetic core, a primary winding and a secondary winding, the primary winding and the secondary winding being coupled through the magnetic core, and a combination of the primary winding, the secondary winding and the magnetic core being used to transmit a main power of the power converter, the current detecting circuit includes: an auxiliary winding coupled to the secondary winding, the auxiliary winding and the secondary winding having the same number of turns and their dotted terminals being connected; and an impeder, one end thereof being coupled to the auxiliary winding to form a series branch, which is coupled in parallel to the secondary winding, and a terminal voltage of the impeder after being filtered being proportional to a magnitude of an output current of the power converter.Type: GrantFiled: October 28, 2019Date of Patent: December 13, 2022Assignee: Delta Electronics, Inc.Inventors: Xueliang Chang, Dong Guo