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公开(公告)号：US20240405687A1
公开(公告)日：2024-12-05
申请号：US18369747
申请日：2023-09-18
Applicant: Delta Electronics, Inc.
Inventor： You-Si Lin , Sergio Fernandez Rojas , Sheng-Hua Li , Yu-Chi Hsu
Abstract: A resonant converter including a full-bridge switch circuit, a resonant circuit, a transformer, a rectifier circuit, a current sensor and a controller is provided. The full-bridge switch circuit includes switches. The resonant circuit is electrically connected to the full-bridge switch circuit and includes a resonant inductor. The transformer includes primary and secondary windings, and the primary winding is electrically connected to the resonant circuit. The rectifier circuit is electrically connected to the secondary winding. The current sensor is electrically connected to the resonant circuit. When a current flowing through the resonant inductor passes through the current sensor, the current sensor generates a current differential signal correspondingly. The controller performs double integration on the current differential signal to acquire an electric charge signal and controls operation of the switches of the full-bridge switch circuit according to the electric charge signal and the input and output voltages of the resonant converter.
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公开(公告)号：US12096582B2
公开(公告)日：2024-09-17
申请号：US17875130
申请日：2022-07-27
Applicant: Delta Electronics, Inc.
Inventor： Jui-Chien Hung , Wen-Lung Huang , Chun-Han Lin , Sheng-Hua Li
Abstract: A bearing structure for a high-low-voltage conversion circuit is disclosed and includes an insulation carrier, a first conductor layer, a second conductor layer, a first trench and a first insulation material. The first conductor layer and the second conductor layer are coated on the first surface and the second surface of the insulation carrier, respectively. A voltage difference is formed between the first conductor layer and the second conductor layer. The first trench is disposed on the first surface and surrounds an outer peripheral edge of the first conductor layer. The first conductor layer is extended from the first surface into the first trench, and the outer peripheral edge of the first conductor layer is located at a bottom of the first trench. The first insulation material covers the outer peripheral edge of the first conductor layer and is filled in the first trench.
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公开(公告)号：US11601042B2
公开(公告)日：2023-03-07
申请号：US17209073
申请日：2021-03-22
Applicant: Delta Electronics, Inc.
Inventor： Chi Zhang , Zhiyu Shen , Yungtaek Jang , Sheng-Hua Li , Ruxi Wang , Peter Mantovanelli Barbosa
Abstract: 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.
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公开(公告)号：US11581885B2
公开(公告)日：2023-02-14
申请号：US17011370
申请日：2020-09-03
Applicant: DELTA ELECTRONICS, INC.
Inventor： Li-Ching Yang , Wen-Lung Huang , Sheng-Hua Li
IPC: H03K17/0812 , H02M3/158
Abstract: A pre-charge control circuit includes a control unit, a conversion unit, and a pre-charge switch. The control unit provides a control signal according to a PWM signal, and the conversion unit provides a control voltage according to the control signal. The pre-charge switch adjusts a magnitude of the current flowing through the input path of the electronic circuit according to the control voltage.
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公开(公告)号：US11368098B2
公开(公告)日：2022-06-21
申请号：US16929867
申请日：2020-07-15
Applicant: DELTA ELECTRONICS, INC.
Inventor： Sheng-Hua Li
Abstract: A power system with communication function applied to a solid state transformer structure includes a plurality of conversion units, a bus path, a plurality of coupling units, and a control module. The conversion units are coupled to the bus path and the coupling units, and the coupling units are coupled to the control module. Each coupling unit is correspondingly coupled to a control unit of each conversion unit. A first-connected coupling unit of the coupling units is coupled to the control module.
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Patent Agency Ranking
公开(公告)号：US11811327B2
公开(公告)日：2023-11-07
申请号：US17972290
申请日：2022-10-24
Applicant: DELTA ELECTRONICS, INC.
Inventor： Sheng-Hua Li , Wen-Lung Huang
CPC classification number: H02M3/24 , H02M1/009 , H02J3/381 , H02J7/007 , H02J2207/20 , H02J2300/24 , H02M1/007 , H02M3/285
Abstract: A power apparatus applied in a solid state transformer structure includes an AC-to-DC conversion unit, a first DC bus, and a plurality of bi-directional DC conversion units. First sides of the bi-directional DC conversion units are coupled to the first DC bus. Second sides of the bi-directional DC conversion units are configured to form at least one second DC bus, and the number of the at least one second DC bus is a bus number. The bi-directional DC conversion units receive a bus voltage of the first DC bus and convert the bus voltage into at least one DC voltage, or the bi-directional DC conversion units receive at least one external DC voltage and convert the at least one external DC voltage into the bus voltage.
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公开(公告)号：US11714112B2
公开(公告)日：2023-08-01
申请号：US17181662
申请日：2021-02-22
Applicant: DELTA ELECTRONICS, INC.
Inventor： Li-Ching Yang , Wen-Lung Huang , Sheng-Hua Li
CPC classification number: G01R27/2605 , G01R19/22 , H02M1/00 , H03F3/45 , H02M1/0009 , H02M7/02 , H03F2200/462
Abstract: A detection apparatus for unbalanced DC link capacitor voltage, the DC link provides a DC voltage and includes a plurality of capacitors coupled in series to two ends of the DC link and a plurality of balanced resistors coupled in series to two ends of the DC link and corresponding to the capacitors. The detection apparatus includes a plurality of sense resistors and a current sensor. One end of each sense resistor is coupled to a common-connected node of two capacitors, and the other end thereof is coupled to a common-connected node of two balanced resistors. The current sensor is coupled to one of the sense resistors and measures a current value of a current flowing through the sense resistor coupled to the current sensor.
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公开(公告)号：US20230043969A1
公开(公告)日：2023-02-09
申请号：US17451532
申请日：2021-10-20
Applicant: Delta Electronics, Inc.
Inventor： Sheng-Hua Li , Chun-Han Lin , Wen-Lung Huang
IPC: G02B6/42
Abstract: A connector for a system circuit board or a power module is provided. The connector includes a main body and an optical connection mechanism. The main body includes a first connecting terminal and a second connecting terminal. The first connecting terminal and the second connecting terminal are power contacts or signal contacts. The optical fiber connection mechanism is embedded within the main body. The optical fiber connection mechanism is disposed between the first connecting terminal and the second connecting terminal. Since the optical fiber connection mechanism is embedded within the main body, it is not necessary to specifically remove the optical fiber cable when the power module is detached from the cabinet. Moreover, the appearance of the product is more aesthetically-pleasing, and the maintaining speed and the product reliability are increased.
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公开(公告)号：US11336192B2
公开(公告)日：2022-05-17
申请号：US16675506
申请日：2019-11-06
Applicant: DELTA ELECTRONICS, INC.
Inventor： Wen-Lung Huang , Sheng-Hua Li
Abstract: A three-phase power apparatus with bidirectional power conversion applied to charge a battery of an electric vehicle. The three-phase charging apparatus includes an AC-to-DC conversion unit, a first DC bus, a first DC-to-DC conversion unit, a second DC bus, and a second DC-to-DC conversion unit. The first DC bus is coupled to the AC-to-DC conversion unit. The first DC-to-DC conversion unit includes an isolated transformer, a resonant tank, a first bridge arm assembly, and a second bridge arm assembly. The first bridge arm assembly is coupled to the first DC bus and a primary side of the isolated transformer. The second bridge arm assembly is coupled a secondary side of the isolated transformer. The second DC bus is coupled to the second bridge arm assembly. The second DC-to-DC conversion unit is coupled to the second DC bus and the battery.
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公开(公告)号：US11296609B2
公开(公告)日：2022-04-05
申请号：US16675506
申请日：2019-11-06
Applicant: DELTA ELECTRONICS, INC.
Inventor： Wen-Lung Huang , Sheng-Hua Li
Abstract: A three-phase power apparatus with bidirectional power conversion applied to charge a battery of an electric vehicle. The three-phase charging apparatus includes an AC-to-DC conversion unit, a first DC bus, a first DC-to-DC conversion unit, a second DC bus, and a second DC-to-DC conversion unit. The first DC bus is coupled to the AC-to-DC conversion unit. The first DC-to-DC conversion unit includes an isolated transformer, a resonant tank, a first bridge arm assembly, and a second bridge arm assembly. The first bridge arm assembly is coupled to the first DC bus and a primary side of the isolated transformer. The second bridge arm assembly is coupled a secondary side of the isolated transformer. The second DC bus is coupled to the second bridge arm assembly. The second DC-to-DC conversion unit is coupled to the second DC bus and the battery.
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