公开(公告)号：US12132400B2

公开(公告)日：2024-10-29

申请号：US18411905

申请日：2024-01-12

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hung-Chieh Lin ,  Yi-Ping Hsieh ,  Jin-Zhong Huang ,  Hung-Yu Huang ,  Chih-Hsien Li ,  Ciao-Yin Pan

IPC: H02M3/155 ,  H02M1/00 ,  H02M3/158 ,  H02M7/5387 ,  H02M1/42 ,  H02M7/48

CPC classification number: H02M3/155 ,  H02M1/0058 ,  H02M3/158 ,  H02M7/53871 ,  H02M1/42 ,  H02M7/4815

Abstract: A soft-switching power converter includes a main switch, an energy-releasing switch, and an inductive coupled unit. The main switch is a controllable switch. The energy-releasing switch is coupled to the main switch. The inductive coupled unit is coupled to the main switch and the energy-releasing switch. The inductive coupled unit includes a first inductance, a second inductance coupled to the first inductance, and an auxiliary switch unit. The auxiliary switch unit is coupled to the second inductance to form a closed loop. The main switch and the energy-releasing switch are alternately turned on and turned off. The auxiliary switch unit is controlled to start turning on before the main switch is turned on so as to provide at least one current path.

公开(公告)号：US11616388B1

公开(公告)日：2023-03-28

申请号：US17570101

申请日：2022-01-06

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hsin-Chih Chen ,  Chao-Lung Kuo ,  Yi-Ping Hsieh ,  Hung-Chieh Lin

IPC: H02J3/00 ,  H02J9/06 ,  H02J7/00

Abstract: An uninterruptible power apparatus with a function of forced disconnection path is coupled between a grid and a load, and the uninterruptible power apparatus includes a bypass path, a power conversion module, a current detection unit, and a control module. The bypass path includes a switch unit, and the power conversion module is connected in parallel to the bypass path. The current detection unit detects a current flowing through the bypass path and transmits a current signal to the control module. The control module provides a turned-off signal to the switch unit when a first voltage of the grid is abnormal, and transmits a polarity of the current signal. The power conversion module generates a compensation amount according to the polarity, and generates an output voltage command according to the compensation amount and a voltage at an input terminal or an output terminal of the power conversion module.

公开(公告)号：US11205956B2

公开(公告)日：2021-12-21

申请号：US16267881

申请日：2019-02-05

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hung-Chieh Lin ,  Chao-Li Kao ,  Yi-Ping Hsieh ,  Jin-Zhong Huang ,  Po-Hsin Tseng ,  Chih-Hsien Li ,  Hung-Yu Huang

IPC: H02M3/155 ,  H02M7/537

Abstract: A power converter with a common DC power source includes a DC power source and at least two power modules. Each of the power modules is coupled with each other and coupled to the DC power source. Each of the power module includes a coupled inductive component coupled to the DC power source, a DC output conversion unit coupled to the coupled inductive component, and a capacitor group having a coupling point. By using the coupled inductive component, it is to solve the problem of return current between the power modules caused by coupling multiple coupling points to each other.

公开(公告)号：US09960699B2

公开(公告)日：2018-05-01

申请号：US15682568

申请日：2017-08-22

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yi-Ping Hsieh ,  Hung-Chieh Lin ,  Chao-Lung Kuo ,  Jin-Zhong Huang ,  Po-Hsin Tseng

IPC: H02M5/458

CPC classification number: H02M5/4585 ,  H02M1/32 ,  H02M7/23 ,  H02M7/493 ,  H02M2001/0009

Abstract: A power converting device includes a first and a second power module electrically coupled in parallel, a loop current limiting circuit and a driving circuit. A first and a second terminal of the loop current limiting circuit are coupled to the first and the second power module respectively. A third and a fourth terminal of the loop current limiting circuit are coupled to each other. The loop current limiting circuit includes a coupled differential-mode inductor, a first inductive unit and a second inductive unit. A first winding and a second winding of the coupled differential-mode inductor are coupled to the first and the second power modules respectively. The first and the second inductive units are coupled to the first and the second power modules respectively. The driving circuit is configured to output a driving signal to the first and the second power module according to a current detecting signal.

公开(公告)号：US20250112548A1

公开(公告)日：2025-04-03

申请号：US18518268

申请日：2023-11-22

Applicant: Delta Electronics, Inc.

Inventor： Hung-Chieh Lin ,  Yi-Ping Hsieh ,  Hsin-Chih Chen ,  Hung-Yu Huang ,  Jin-Zhong Huang

IPC: H02M3/07

Abstract: A power converter and a power conversion method are provided and capable of bus capacitor voltage balance based on inherent inductor components of the power converter. Compared with the conventional approach that adds a balance circuit, the power converter and the power conversion method can reduce a size of overall circuit and improve a power density. In addition, two relays of the power converter are configured to switch switching states such that two inductors store or release energy, thereby transmitting electrical energy between two bus capacitors and two load capacitors. The power converter and the power conversion method are able to realize energy balance and hybrid power supply and satisfy various load requirements.

公开(公告)号：US20240364203A1

公开(公告)日：2024-10-31

申请号：US18232721

申请日：2023-08-10

Applicant: Delta Electronics, Inc.

Inventor： Hsin-Chih Chen ,  Li-Hung Wang ,  Chao-Li Kao ,  Yi-Ping Hsieh ,  Hung-Chieh Lin

IPC: H02M1/00 ,  H02M7/483

CPC classification number: H02M1/0029 ,  H02M1/007 ,  H02M7/4837

Abstract: A power converter is provided. The power converter includes first to fourth switches electrically connected in series, a flying capacitor and a controller. Positive and negative terminals of the flying capacitor are electrically connected to the second and third switches respectively. The controller operates the first and fourth switches to perform a first complementary switching with a first dead time, and operates the second and third switches to perform a second complementary switching with a second dead time. The controller determines to regulate the first or second dead time by detecting a capacitor voltage of the flying capacitor, such that the capacitor voltage of the flying capacitor is maintained within a balance voltage range.

公开(公告)号：US11652420B2

公开(公告)日：2023-05-16

申请号：US17365608

申请日：2021-07-01

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hung-Chieh Lin ,  Chao-Li Kao ,  Yi-Ping Hsieh ,  Jin-Zhong Huang ,  Chao-Lung Kuo ,  Hung-Yu Huang ,  Chih-Hsien Li

IPC: H02M3/335

CPC classification number: H02M3/33592 ,  H02M3/33553 ,  H02M3/33584

Abstract: An isolated converter with high boost ration includes a transformer, a first bridge arm, a second bridge arm, and a boost circuit. The transformer includes a secondary side having a secondary side first node and a secondary side second node. The first bridge arm includes a first diode and a second diode. The second bridge arm includes a third diode and a fourth diode. The boost circuit includes at least one fifth diode coupled between the first bridge arm and the secondary side second node, at least one sixth diode coupled between the second bridge arm and the secondary side first node, and at least two capacitors coupled to the secondary side first node and the secondary side second node.

公开(公告)号：US10910943B1

公开(公告)日：2021-02-02

申请号：US16675474

申请日：2019-11-06

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hung-Chieh Lin ,  Chao-Li Kao ,  Yi-Ping Hsieh ,  Jin-Zhong Huang ,  Chao-Lung Kuo

IPC: H02M1/42

Abstract: A bidirectional power factor correction (PFC) module is coupled to an AC power source, an energy storage unit, and a DC bus. The bidirectional PFC module includes a bridge arm assembly and a control unit. The bridge arm assembly includes a first bridge arm, a first inductor, a second inductor, and a second bridge arm. The control unit provides a plurality of control signals to control the first bridge arm and the second bridge arm to make the bidirectional PFC module operate in an AC power supply mode, a DC power supply mode, or a power feed mode.

公开(公告)号：US10554119B1

公开(公告)日：2020-02-04

申请号：US16239328

申请日：2019-01-03

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chao-Li Kao ,  Hung-Chieh Lin ,  Yi-Ping Hsieh ,  Jin-Zhong Huang ,  Chao-Lung Kuo ,  Po-Hsin Tseng ,  Hong-Wen Chen

IPC: H02M1/32 ,  H02M7/487 ,  H02M7/5387 ,  H02M1/08

Abstract: An inverter apparatus with overcurrent protection control includes a first terminal of a DC input terminal connected to an AC output terminal through a first switch element and a second switch element, and a second terminal of the DC input terminal connected to the AC output terminal through a fourth switch element and a third switch element. An intermediate potential terminal is connected to a fifth switch element and a sixth switch element, and connected to the AC output terminal through the fifth switch element and the second switch element, and connected to the AC output terminal through the sixth switch element and the third switch element. When the control unit determines that the inverter apparatus is in an overcurrent state, the control unit controls a sequence of turning off the inverter apparatus to be the second switch element, the first switch element, and the sixth switch element.