公开(公告)号：US11540412B1

公开(公告)日：2022-12-27

申请号：US17492447

申请日：2021-10-01

Applicant: Delta Electronics, Inc.

Inventor： Sheng-Hua Li ,  Chun-Han Lin

IPC: H05K7/14 ,  H05K5/03 ,  H05K5/02

Abstract: A safety device for medium-high voltage system is disclosed and includes a cabinet, a power module and a metal cover plate. The cabinet includes an accommodation seat connected to the medium-voltage charged region and having an opening. The power module is detachably disposed in the accommodation seat through the opening. The metal cover plate is pivotally connected to the accommodation seat and grounded. When the metal cover plate is in the first position, the opening is closed and the medium-voltage charged region is shielded. When the power module is set in the accommodation seat, the metal cover plate is pivotally rotated to a second position, and the power module is electrically connected to the medium-voltage charged region. When the power module is detached from the accommodation seat, the metal cover plate is rotated to the first position, and the opening is closed to shield the medium-voltage charged region.

公开(公告)号：US11515800B2

公开(公告)日：2022-11-29

申请号：US17168815

申请日：2021-02-05

Applicant: DELTA ELECTRONICS, INC.

Inventor： Wen-Lung Huang ,  Sheng-Hua Li

IPC: H02M7/797 ,  H02M3/335 ,  H02M5/458 ,  H02M7/5387 ,  H02M7/219 ,  H02M7/48 ,  H02M7/483 ,  H02M7/81 ,  H02M3/00

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 bridge arm and a second 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 bridge arm and a fourth bridge arm. The second AC-to-DC conversion unit has a fifth bridge arm and a sixth bridge arm. The second DC bus provides a second DC voltage.

公开(公告)号：US11329478B2

公开(公告)日：2022-05-10

申请号：US16180409

申请日：2018-11-05

Applicant: DELTA ELECTRONICS, INC.

Inventor： Wen-Lung Huang ,  Sheng-Hua Li

IPC: H02H7/12

Abstract: A power conversion system with abnormal energy protection includes a plurality of DC input power sources, a plurality of DC power converters, two output capacitors, and a protection circuit. An input side of each DC power converter is correspondingly coupled to one of the DC input power sources, and output sides of the DC power converters are coupled in parallel to each other to form a DC output bus. Two output capacitors are coupled in series between a positive voltage end and a negative voltage end of the DC output bus. The protection circuit is coupled between the DC input power sources and the two output capacitors. When one of the two output capacitors is abnormal, the protection circuit decouples the DC input power sources from the two output capacitors in a shorted-circuit manner.

公开(公告)号：US10476433B2

公开(公告)日：2019-11-12

申请号：US15632076

申请日：2017-06-23

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yungtaek Jang ,  Yin-Yuan Chen ,  Sheng-Hua Li

IPC: H03B5/18 ,  H03B5/04 ,  G05F1/70 ,  H03B5/02 ,  H03K3/00 ,  H03K4/06 ,  H03K4/08 ,  H03K7/02 ,  H03K7/06

Abstract: A microwave generator includes a power supply, an output circuit, a feedback oscillator, a pulse controller, a signal combination circuit and a semiconductor amplifier. The power supply converts input voltage and input current into output voltage and output current. The output circuit generates a microwave signal to an output terminal of the microwave generator and a feedback signal according to the microwave signal. The feedback oscillator generates an oscillation signal according to the feedback signal. According to a reference signal, the pulse controller generates a pulse signal. According to the oscillation signal and pulse signal, the signal combination circuit generates a control signal. The semiconductor amplifier generates and adjusts an amplified signal according to the control signal. The output circuit generates the microwave signal according to the amplified signal. The output current is adjusted according to the amplified signal. Consequently, the input current and the input voltage are in phase.

公开(公告)号：US20180013385A1

公开(公告)日：2018-01-11

申请号：US15632076

申请日：2017-06-23

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yungtaek Jang ,  Yin-Yuan Chen ,  Sheng-Hua Li

IPC: H03B5/18 ,  G05F1/70 ,  H03B5/02

CPC classification number: H03B5/04 ,  G05F1/70 ,  H03B5/02 ,  H03B5/1847 ,  H03B2200/003 ,  H03K3/00 ,  H03K4/06 ,  H03K4/08 ,  H03K7/02 ,  H03K7/06

Abstract: A microwave generator includes a power supply, an output circuit, a feedback oscillator, a pulse controller, a signal combination circuit and a semiconductor amplifier. The power supply converts input voltage and input current into output voltage and output current. The output circuit generates a microwave signal to an output terminal of the microwave generator and a feedback signal according to the microwave signal. The feedback oscillator generates an oscillation signal according to the feedback signal. According to a reference signal, the pulse controller generates a pulse signal. According to the oscillation signal and pulse signal, the signal combination circuit generates a control signal. The semiconductor amplifier generates and adjusts an amplified signal according to the control signal. The output circuit generates the microwave signal according to the amplified signal. The output current is adjusted according to the amplified signal. Consequently, the input current and the input voltage are in phase.

公开(公告)号：US09306471B2

公开(公告)日：2016-04-05

申请号：US14165992

申请日：2014-01-28

Applicant: Delta Electronics, Inc.

Inventor： Sheng-Hua Li

IPC: H02M7/44 ,  H02M1/32 ,  H02J3/38 ,  H02M1/00

CPC classification number: H02M7/44 ,  H02J3/383 ,  H02J3/385 ,  H02M1/32 ,  H02M2001/007 ,  Y02E10/563 ,  Y02E10/58

Abstract: A method of operating a micro inverter of a solar power system includes following steps: First, an output power value of a solar photovoltaic module is acquired. Afterward, it is to judge whether the micro inverter executes a power boosting mode. If the power boosting mode is executed, a maximum output power of the micro inverter is boosted from a rated output power value to a maximum output power value. Finally, it is to judge whether the output power value of the solar photovoltaic module is greater than the maximum output power value. If YES, the maximum output power value is outputted from the micro inverter.

Abstract translation: 太阳能发电系统的微逆变器的运行方法包括以下步骤：首先，获取太阳能发电模块的输出功率值。 之后，判断微逆变器是否执行升压模式。 如果执行升压模式，则微逆变器的最大输出功率从额定输出功率值升高到最大输出功率值。 最后，判断太阳能光伏组件的输出功率值是否大于最大输出功率值。 如果是，则从微逆变器输出最大输出功率值。