公开(公告)号：US20160065069A1

公开(公告)日：2016-03-03

申请号：US14792628

申请日：2015-07-07

Applicant: DELTA ELECTRONICS, INC.

Inventor： Li-Ping SUN ,  De-Sheng GUO ,  Chao YAN

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M7/487 ,  H02M2001/0009 ,  H02M2001/346 ,  Y02B70/1491

Abstract: A power converting circuit includes a converter. The converter receives and converts an input power to provide power for a load. The converter includes a power storage unit, a switch unit, a capacitor unit, and a current sampling unit. The power storage unit includes input and output terminals. The switch unit includes first and second switches, which are series connected at a common terminal, and the common terminal is coupled to the output terminal of the power storage unit. The capacitor unit includes first and second capacitors. The first capacitor and the switch unit are parallel connected to form a capacitor-switch parallel structure. The second capacitor capacitance is more than ten times larger than the first capacitor capacitance. The current sampling unit and the capacitor-switch parallel structure are series connected to form a capacitor-sampling unit series structure. The capacitor-sampling unit series structure and the second capacitor are parallel connected.

Abstract translation: 电力转换电路包括转换器。 转换器接收并转换输入电源以为负载提供电力。 转换器包括蓄电单元，开关单元，电容器单元和电流采样单元。 蓄电单元包括输入和输出端子。 开关单元包括在公共端子串联连接的第一和第二开关，并且公共端子耦合到蓄电单元的输出端子。 电容器单元包括第一和第二电容器。 第一电容器和开关单元并联连接形成电容器开关并联结构。 第二电容电容比第一电容电容大十倍以上。 电流采样单元和电容开关并联结构串联连接形成一个电容采样单元串联结构。 电容器采样单元串联结构和第二电容并联。

公开(公告)号：US20180152115A1

公开(公告)日：2018-05-31

申请号：US15688850

申请日：2017-08-28

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chao YAN ,  Li-Ping SUN

IPC: H02M7/00 ,  H02M7/42 ,  H02M3/335 ,  H02M7/02 ,  H02M3/158

CPC classification number: H02M7/003 ,  H02M3/156 ,  H02M3/158 ,  H02M3/1582 ,  H02M3/1588 ,  H02M3/33584 ,  H02M3/33592 ,  H02M7/02 ,  H02M7/42 ,  H02M7/797 ,  H02M2001/0067 ,  H02M2001/007

Abstract: A power conversion device is disclosed herein. The power conversion device includes an AC/DC converter, a DC/DC converter, and a DC/DC isolation converter. The AC/DC converter is configured to convert AC power into a first DC power, or convert the first DC power into the AC power. The DC/DC converter is configured to convert the first DC power into a second DC power, or convert the second DC power into the first power. The DC/DC isolation converter is coupled between the AC/DC converter and the DC/DC converter, and configured to isolate the AC/DC converter and the DC/DC converter bi-directionally.

公开(公告)号：US20160056730A1

公开(公告)日：2016-02-25

申请号：US14705982

申请日：2015-05-07

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chao YAN ,  Li-Ping SUN ,  Zhi-Hui DING ,  De-Sheng GUO

IPC: H02M7/217

CPC classification number: H02M1/4225 ,  Y02B70/126

Abstract: A control method for a power converter is provided. The power converter includes an inductor, and a switch selectively turned on according to a control signal. The control method includes determining an on-time and a falling time according to a voltage information or a current information of the power converter; determining a switching period of the control signal according to the on-time, the falling time, and a resonant period corresponding to the inductor and a parasitic capacitance of the switch; adjusting the switching period by comparing the switching period with a first threshold period and a second threshold period; generating the control signal having the switching period when the switching period is greater than the first threshold period and less than the second threshold period or when the switching period is greater than the second threshold period and the power converter operates at over 50% of a rated power.

Abstract translation: 提供了一种用于功率转换器的控制方法。 功率转换器包括电感器和根据控制信号选择性地导通的开关。 所述控制方法包括根据所述电力变换器的电压信息或电流信息确定导通时间和下降时间; 根据接通时间，下降时间和对应于电感器的谐振周期和开关的寄生电容确定控制信号的开关周期; 通过将切换周期与第一阈值周期和第二阈值周期进行比较来调整切换周期; 产生具有开关周期的控制信号，当开关周期大于第一阈值周期且小于第二阈值周期时，或者当开关周期大于第二阈值周期时，功率转换器工作在额定值的50％以上 功率。