公开(公告)号：US20150214859A1

公开(公告)日：2015-07-30

申请号：US14448210

申请日：2014-07-31

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hong-Yi CHEN ,  Chen-Wei KU ,  Wei-Lun HSIN

IPC: H02M7/5387

CPC classification number: H02M7/53873 ,  H02M1/126 ,  H02M1/15 ,  H02M7/53871 ,  H02M7/5388

Abstract: A power conversion system mainly includes an input capacitor bank, a first conversion circuit, a second conversion circuit, and a control circuit. The input capacitor bank has a first capacitor and a second capacitor. The first capacitor and the second capacitor are connected to a neutral point and receive a DC input voltage. The first conversion circuit is connected in parallel to the input capacitor bank, and has a first branch, a second branch, and a first auxiliary branch. The second conversion circuit is connected in parallel to the input capacitor bank, and has a third branch, a fourth branch, and a second auxiliary branch. The control circuit produces a plurality of control signals to correspondingly control the first conversion circuit and the second conversion circuit so as to reduce leakage current caused by parasitic capacitance voltage.

Abstract translation: 电力转换系统主要包括输入电容器组，第一转换电路，第二转换电路和控制电路。 输入电容器组具有第一电容器和第二电容器。 第一电容器和第二电容器连接到中性点并接收直流输入电压。 第一转换电路并联连接到输入电容器组，并且具有第一分支，第二分支和第一辅助分支。 第二转换电路并联连接到输入电容器组，并且具有第三分支，第四分支和第二辅助分支。 控制电路产生多个控制信号以相应地控制第一转换电路和第二转换电路，以便减少由寄生电容电压引起的漏电流。

公开(公告)号：US20170093332A1

公开(公告)日：2017-03-30

申请号：US15099893

申请日：2016-04-15

Applicant: DELTA ELECTRONICS, INC.

Inventor： Lei-Ming LEE ,  Chen-Wei KU ,  Xin-Hung LIN

IPC: H02S40/32 ,  H02M7/537 ,  H02J3/38

CPC classification number: H02S40/32 ,  H02J3/383 ,  H02M7/48 ,  H02M7/537 ,  H02M2001/009 ,  Y02E10/563

Abstract: An inverter apparatus includes a first capacitor, a second capacitor, a first switch, a second switch, a third switch, a fourth switch, a first inductor and a second inductor. The first capacitor, the second capacitor, the first switch, the third switch and the first inductor form and have functions of a half bridge inverter. The first capacitor, the second capacitor, the second switch, the fourth switch and the second inductor form and have functions of a half bridge inverter. Therefore, the present invention obtains two kinds of voltages.

公开(公告)号：US20150103575A1

公开(公告)日：2015-04-16

申请号：US14108438

申请日：2013-12-17

Applicant: Delta Electronics, Inc.

Inventor： Chen-Wei KU ,  Wei-Lun HSIN

IPC: H02M7/5387

CPC classification number: H02M7/5387 ,  H02M7/48 ,  Y02E10/56

Abstract: A solar photovoltaic power conversion system is provided to convert a DC input voltage into an AC output voltage, which mainly includes an input capacitor bank, a first switching circuit, a second switching circuit, a first filtering circuit, a second filtering circuit, and a control circuit. The first switching circuit has a first power switch and a second power switch. The second switching circuit has a third power switch and a fourth power switch. The control circuit produces a first control signal, a second control signal, a third control signal, and a fourth control signal to respectively control the first power switch, the second power switch, the third power switch, and the fourth power switch so as to reduce leakage current of the DC input voltage caused by parasitic capacitance voltage.

Abstract translation: 提供一种将DC输入电压转换为AC输出电压的太阳能光伏电力转换系统，其主要包括输入电容器组，第一开关电路，第二开关电路，第一滤波电路，第二滤波电路和 控制电路。 第一开关电路具有第一电源开关和第二电源开关。 第二开关电路具有第三电源开关和第四电源开关。 控制电路产生第一控制信号，第二控制信号，第三控制信号和第四控制信号，以分别控制第一电源开关，第二电源开关，第三电源开关和第四电源开关，以便 降低由寄生电容电压引起的直流输入电压的漏电流。

公开(公告)号：US20140301123A1

公开(公告)日：2014-10-09

申请号：US13940781

申请日：2013-07-12

Applicant: DELTA ELECTRONICS, INC.

Inventor： Lei-Ming LEE ,  Chen-Wei KU ,  Ho HUANG

IPC: H02M7/5387

CPC classification number: H02M7/5387 ,  H02M1/15 ,  H02M7/487 ,  H02M7/53871 ,  H02M2001/342 ,  Y02B70/1491

Abstract: A DC-to-AC power conversion system is provided to convert a DC input voltage into an AC output voltage, which mainly includes a bridge switching circuit, an auxiliary switch circuit, and a control circuit. The bridge switching circuit has a first power switch, a second power switch, a third power switch, and a fourth power switch. The auxiliary switch circuit has a fifth power switch, a sixth power switch, a seventh power switch, and an eighth power switch. The control circuit produces a complementary switching signal pair to control the first and fourth power switches and the second and third power switches, respectively. In addition, the control circuit produces a complementary level signal pair to control the sixth and seventh power switches and the fifth and eighth power switches, respectively.

Abstract translation: 提供DC-AC电力转换系统，将DC输入电压转换为AC输出电压，主要包括桥式开关电路，辅助开关电路和控制电路。 桥式开关电路具有第一电源开关，第二电源开关，第三电源开关和第四电源开关。 辅助开关电路具有第五电源开关，第六电源开关，第七电源开关和第八电源开关。 控制电路产生互补的开关信号对以分别控制第一和第四电力开关以及第二和第三电力开关。 此外，控制电路产生互补电平信号对以分别控制第六和第七电力开关以及第五和第八电力开关。

公开(公告)号：US20180040444A1

公开(公告)日：2018-02-08

申请号：US15366174

申请日：2016-12-01

Applicant: Delta Electronics, Inc.

Inventor： Chen-Wei KU ,  Lei-Ming LEE ,  Xin-Hung LIN

IPC: H01H47/00 ,  H02J3/38 ,  H02J3/46

CPC classification number: H01H47/00 ,  H02J1/00 ,  H02J3/383 ,  H02J3/46 ,  H02S40/34

Abstract: A smart switch system (20) includes a smart switch box (10). The smart switch box (10) includes a switch box output side (102), an output-side voltage detection unit (104), a switch control unit (106), a switch unit (108) and a switch box input side (110). The output-side voltage detection unit (104) detects a voltage of the switch box output side (102) and informs the switch control unit (106) of the voltage of the switch box output side (102). According to the voltage of the switch box output side (102), the switch control unit (106) turns on or off the switch unit (108). When the switch control unit (106) turns on the switch unit (108), an input voltage (112) sent from a direct-current voltage generation apparatus (50) is sent to the switch box output side (102) through the switch box input side (110) and the switch unit (108).

公开(公告)号：US20180011149A1

公开(公告)日：2018-01-11

申请号：US15469595

申请日：2017-03-27

Applicant: DELTA ELECTRONICS, INC.

Inventor： Tsung-Han TSAI ,  Po-Jen HOU ,  Chen-Wei KU ,  Xin-Hung LIN

IPC: G01R31/40 ,  H02J3/38 ,  G01R15/14 ,  G05B15/02 ,  H02M7/44 ,  H02M3/04

CPC classification number: G01R31/40 ,  G01R15/146 ,  G01R27/18 ,  G05B15/02 ,  H02H3/16 ,  H02J3/383 ,  H02M1/32 ,  H02M3/04 ,  H02M3/158 ,  H02M7/44 ,  H02M7/5387 ,  H02M2001/007 ,  Y02E10/563

Abstract: A power converting device includes a DC-DC converting circuit, a DC-AC converting circuit, and an insulation detecting circuit. The DC-DC converting circuit is configured to convert a DC input voltage to a DC bus voltage. The DC-AC converting circuit is electrically coupled to the DC-DC converting circuit and configured to convert the DC bus voltage to an AC voltage. The insulation detecting circuit is electrically coupled between the DC-DC converting circuit and the DC-AC converting circuit. The insulation detecting circuit is configured to detect a ground impedance value of the power converting device according to the DC bus voltage.