公开(公告)号：US20240237311A1

公开(公告)日：2024-07-11

申请号：US18502930

申请日：2023-11-06

Applicant: DELTA ELECTRONICS, INC.

Inventor： Sheng-Hua LI ,  Wei-Chi LEE ,  Ming-Chen YEN ,  Chun-Han LIN

IPC: H05K7/20

CPC classification number: H05K7/20927 ,  H05K7/20272 ,  H05K7/20945

Abstract: A heat dissipation is used to dissipate heat for a power module of an AC-to-DC conversion module. The heat dissipation system includes a chiller, a heat exchanger, a first circulation pipeline, a second circulation pipeline, a first throttle valve, and a control module. The chiller, the heat exchanger, and the first circulation pipeline form a first circulation loop to circulate a low-temperature coolant. The second circulation pipeline is disposed on one side of the power module to form a second circulation loop, and absorbs a heat source generated by the power module by circulating a high-temperature coolant. The control module opens the first throttle valve to introduce the low-temperature coolant into the second circulation loop based on a temperature of the high-temperature coolant being greater than a temperature threshold so as to control the temperature to be less than or equal to the temperature threshold.

公开(公告)号：US20240227604A1

公开(公告)日：2024-07-11

申请号：US18485512

申请日：2023-10-12

Applicant: DELTA ELECTRONICS, INC.

Inventor： Sheng-Hua LI ,  Po-Yi YEH ,  Wen-Lung HUANG ,  Wei-Ting SHEN

IPC: B60L53/57 ,  B60L53/53 ,  H02M3/335

CPC classification number: B60L53/57 ,  B60L53/53 ,  H02M3/33571 ,  B60L2210/10 ,  B60L2210/30 ,  B62D53/005

Abstract: A mobile charging station is applied to a combination truck including a tractor and a trailer. The mobile charging station includes a solid-state transformer power module and a plurality of charging pipes. The solid-state transformer power module is disposed on the trailer, and receives an input power source. The solid-state transformer power module includes a plurality of AC-to-DC conversion modules, and the plurality of AC-to-DC conversion modules convert the input power source into a plurality of DC power sources. The plurality of charging piles is disposed on the trailer, and the plurality of charging piles are coupled to the plurality of DC power sources so that the charging piles provide charging power corresponding to the number of electric vehicles connected to charge the electric vehicles when the electric vehicles connect to the charging piles.

公开(公告)号：US20210359594A1

公开(公告)日：2021-11-18

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

IPC: H02M1/42 ,  H02M7/217 ,  H02M1/12 ,  H02M7/219

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.

公开(公告)号：US20210044208A1

公开(公告)日：2021-02-11

申请号：US16863318

申请日：2020-04-30

Applicant: DELTA ELECTRONICS, INC.

Inventor： Sheng-Hua LI ,  Wen-Lung HUANG

IPC: H02M3/24

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.

公开(公告)号：US20180291549A1

公开(公告)日：2018-10-11

申请号：US15866316

申请日：2018-01-09

Applicant: Delta Electronics, Inc.

Inventor： Chin-Hao CHEN ,  Cheng-Chung LI ,  Sheng-Hua LI ,  Yin-Yuan CHEN

IPC: D06F39/00 ,  D06F37/30 ,  H02P6/30 ,  H02P6/08

Abstract: A method for measuring sensorless brushless-DC motor load, adapted to a home appliance, including: accelerating, through the use of a driving circuit, a BLDC motor from an initial rotational speed to a first rotational speed; disabling, through the use of a control circuit, the driving circuit; obtaining, through the use of a detecting circuit, phase voltage information corresponding to each phase of the BLDC motor when the BLDC motor is decelerated from the first rotational speed to a second rotational speed; obtaining, through the use of the control circuit, a first time period during which the BLDC motor decelerates from the first rotational speed to the second rotational speed according to at least one piece of the phase voltage information; obtaining, through the use of the control circuit, a first predicted weight of a load according to the first time period and a first lookup table.

公开(公告)号：US20240297591A1

公开(公告)日：2024-09-05

申请号：US18364748

申请日：2023-08-03

Applicant: DELTA ELECTRONICS, INC.

Inventor： Sheng-Hua LI ,  You-Si LIN

IPC: H02M3/335 ,  H02M1/00 ,  H02M3/00

CPC classification number: H02M3/33573 ,  H02M1/0025 ,  H02M1/0058 ,  H02M3/01

Abstract: A full-bridge series resonant converter includes a full-bridge switch circuit, a transformer, a resonant tank, a sensing circuit, and a processing circuit. The full-bridge switch circuit includes a first switch leg and a second switch leg having a second lower switch. The resonant tank includes a resonant inductor, a magnetizing inductor, and a resonant capacitor. The sensing circuit is coupled between the resonant capacitor and a ground point of a primary side of the transformer for sensing a node voltage between the resonant capacitor and the ground point as a sensing voltage. The processing circuit counts a turned-on time of the second lower switch as a first half-cycle time based on the sensing voltage, and duplicates the first half-cycle time as a second half-cycle time for controlling the full-bridge switch circuit.

公开(公告)号：US20240223094A1

公开(公告)日：2024-07-04

申请号：US18380976

申请日：2023-10-17

Applicant: DELTA ELECTRONICS, INC.

Inventor： Sheng-Hua LI

IPC: H02M3/335

CPC classification number: H02M3/33576

Abstract: A medium-voltage (MV) power conversion system receives a MV AC power source, and converts the MV AC power source into DC power sources to supply power to loads. The MV power conversion system includes a plurality of power modules, and each power module includes a MV AC switch and a MV isolated AC-to-DC converter. The MV isolated AC-to-DC converter is connected in series to the MV AC switch. Input sides of the plurality of MV AC switches are connected to each other, and connected of the MV AC power source so that the plurality of MV isolated AC-to-DC converters individually convert the MV AC power source into the DC power sources.

公开(公告)号：US20210373058A1

公开(公告)日：2021-12-02

申请号：US17181662

申请日：2021-02-22

Applicant: DELTA ELECTRONICS, INC.

Inventor： Li-Ching YANG ,  Wen-Lung HUANG ,  Sheng-Hua LI

IPC: G01R27/26 ,  H02M1/00 ,  H03F3/45 ,  G01R19/22

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.

公开(公告)号：US20210013812A1

公开(公告)日：2021-01-14

申请号：US16562074

申请日：2019-09-05

Applicant: DELTA ELECTRONICS, INC.

Inventor： Wen-Lung HUANG ,  Sheng-Hua LI

IPC: H02M5/458 ,  H02M7/219 ,  H02M7/5387

Abstract: A power apparatus applied in an SST structure includes a first AC-to-DC conversion unit, a first DC bus, an isolated transformer, a DC-to-AC conversion unit, a second AC-to-DC conversion unit, and a second DC bus. The first AC-to-DC conversion unit has a first three-level bridge arm and a second three-level bridge arm. The first DC bus provides a first DC voltage. The isolated transformer has a primary side and a secondary side. The DC-to-AC conversion unit has a third three-level bridge arm and a fourth three-level bridge arm. The second AC-to-DC conversion unit has a fifth three-level bridge arm and a sixth three-level bridge arm. The second DC bus provides a second DC voltage.

公开(公告)号：US20140369098A1

公开(公告)日：2014-12-18

申请号：US14132319

申请日：2013-12-18

Applicant: DELTA ELECTRONICS, INC.

Inventor： Sheng-Hua LI

IPC: H02M7/44

CPC classification number: H02M7/44 ,  H01L31/042 ,  H02J3/383 ,  H02J3/385 ,  H02J13/002 ,  H02M7/48 ,  H02S40/32 ,  H04B3/542 ,  Y02E10/563 ,  Y02E10/58 ,  Y02E40/72 ,  Y02E60/7815 ,  Y04S10/123 ,  Y04S40/121

Abstract: A DC-to-AC converter receives a DC power generated from a solar panel and converts the received DC power into an AC power outputted through a power line. The DC-to-AC converter includes a signal input port for externally connecting an environment sensing apparatus. The environment sensing apparatus senses environment conditions around the solar panel and produces an analog sensing signal. The DC-to-AC converter receives the analog sensing signal, converts the analog sensing signal into a digital sensing signal, and outputs the digital sensing signal the power line. A micro inverter is composed of the DC-to-AC converter and the solar panel, and the micro inverter is constructed in the solar photovoltaic system, thus eliminating unnecessary hardware devices.

Abstract translation: DC-AC转换器接收从太阳能电池板产生的直流电力，并将接收到的直流电力转换为通过电力线输出的交流电力。 DC-AC转换器包括用于外部连接环境感测装置的信号输入端口。 环境感测装置感测太阳能电池板周围的环境条件并产生模拟感测信号。 DC-AC转换器接收模拟感测信号，将模拟感测信号转换为数字感测信号，并将数字感应信号输出到电力线。 微逆变器由DC-AC转换器和太阳能电池板组成，微逆变器构建在太阳能光伏系统中，从而消除了不必要的硬件设备。