公开(公告)号：US20170005592A1

公开(公告)日：2017-01-05

申请号：US15145610

申请日：2016-05-03

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chao Yan ,  Liping Sun ,  Dong Xu ,  Zhihui Ding

IPC: H02M7/537 ,  H02M1/08

CPC classification number: H02M7/53871

Abstract: A control method of an inverter circuit includes the following steps. Firstly, a half cycle of the AC output voltage is divided into a first stage and a second stage. Then, the upper switch element and the lower switch element are controlled to be operated at a first switching frequency lower than a preset threshold frequency in the first stage, so that the inverter circuit is operated in a continuous current mode. Then, the upper switch element or the lower switch element of the bridge arm is controlled to be operated at a second switching frequency in the second stage, so that the upper switch element and the lower switch element are turned on at a preset voltage level and the inverter circuit is operated at a discontinuous current mode boundary mode.

Abstract translation: 逆变器电路的控制方法包括以下步骤。 首先，将交流输出电压的一半周期分为第一阶段和第二阶段。 然后，在第一级中将上部开关元件和下部开关元件控制为以低于预设阈值频率的第一开关频率操作，使得逆变器电路以连续电流模式工作。 然后，桥臂的上部开关元件或下部开关元件被控制为在第二级中以第二开关频率操作，使得上部开关元件和下部开关元件以预定的电压电平接通，并且 逆变器电路以不连续电流模式边界模式工作。

公开(公告)号：US09780695B2

公开(公告)日：2017-10-03

申请号：US15145610

申请日：2016-05-03

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chao Yan ,  Liping Sun ,  Dong Xu ,  Zhihui Ding

IPC: H02M7/5387

CPC classification number: H02M7/53871

Abstract: A control method of an inverter circuit includes the following steps. Firstly, a half cycle of the AC output voltage is divided into a first stage and a second stage. Then, the upper switch element and the lower switch element are controlled to be operated at a first switching frequency lower than a preset threshold frequency in the first stage, so that the inverter circuit is operated in a continuous current mode. Then, the upper switch element or the lower switch element of the bridge arm is controlled to be operated at a second switching frequency in the second stage, so that the upper switch element and the lower switch element are turned on at a preset voltage level and the inverter circuit is operated at a discontinuous current mode boundary mode.

公开(公告)号：US09590518B2

公开(公告)日：2017-03-07

申请号：US14952878

申请日：2015-11-25

Applicant: Delta Electronics, Inc.

Inventor： Chao Yan ,  Liping Sun ,  Zhihui Ding ,  Desheng Guo

IPC: H02M3/335 ,  H02M1/42 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/33592 ,  H02M1/42 ,  H02M1/4233 ,  H02M3/1588 ,  H02M2001/0058 ,  Y02B70/126 ,  Y02B70/1466 ,  Y02B70/1475 ,  Y02B70/1491 ,  Y02P80/112

Abstract: The present application discloses a power converter and a controlling method thereof. The power converter at least comprises an inductor, a parasitic capacitor, an energy storage switch and a free-wheeling switch, and the controlling method is used for enabling the energy storage switch to maintain zero-voltage turn-on during the normal operation of the power converter. The controlling method comprising: within a switching period, the free-wheeling switch is turned on again for a preset time after the free-wheeling switch is turned on and turned off for the first time and after the inductor and the parasitic capacitor resonate, so that a voltage between two terminals of the energy storage switch can decline to zero, and when the voltage between two terminals of the energy storage switch declines to zero, the energy storage switch is turned on, thereby entering the next switching period of the power converter.

Abstract translation: 本申请公开了一种功率转换器及其控制方法。 功率转换器至少包括电感器，寄生电容器，储能开关和续流开关，并且该控制方法用于使能量存储开关在正常工作期间保持零电压接通 电源转换器 该控制方法包括：在开关周期内，在续流开关第一次接通和断开之后以及在电感器和寄生电容器谐振之后，续流开关再次接通预定时间，因此 能量存储开关的两个端子之间的电压可以降到零，当能量存储开关的两个端子之间的电压下降到零时，能量存储开关导通，从而进入功率转换器的下一个开关周期 。

公开(公告)号：US20160276945A1

公开(公告)日：2016-09-22

申请号：US14952878

申请日：2015-11-25

Applicant: Delta Electronics, Inc.

Inventor： Chao Yan ,  Liping Sun ,  Zhihui Ding ,  Desheng Guo

IPC: H02M3/335 ,  H02M1/42

CPC classification number: H02M3/33592 ,  H02M1/42 ,  H02M1/4233 ,  H02M3/1588 ,  H02M2001/0058 ,  Y02B70/126 ,  Y02B70/1466 ,  Y02B70/1475 ,  Y02B70/1491 ,  Y02P80/112

Abstract: The present application discloses a power converter and a controlling method thereof. The power converter at least comprises an inductor, a parasitic capacitor, an energy storage switch and a free-wheeling switch, and the controlling method is used for enabling the energy storage switch to maintain zero-voltage turn-on during the normal operation of the power converter. The controlling method comprising: within a switching period, the free-wheeling switch is turned on again for a preset time after the free-wheeling switch is turned on and turned off for the first time and after the inductor and the parasitic capacitor resonate, so that a voltage between two terminals of the energy storage switch can decline to zero, and when the voltage between two terminals of the energy storage switch declines to zero, the energy storage switch is turned on, thereby entering the next switching period of the power converter.

Abstract translation: 本申请公开了一种功率转换器及其控制方法。 功率转换器至少包括电感器，寄生电容器，储能开关和续流开关，并且该控制方法用于使能量存储开关在正常工作期间保持零电压接通 电源转换器 该控制方法包括：在开关周期内，在续流开关第一次接通和断开之后以及在电感器和寄生电容器谐振之后，续流开关再次接通预定时间，因此 能量存储开关的两个端子之间的电压可以降到零，当能量存储开关的两个端子之间的电压下降到零时，能量存储开关导通，从而进入功率转换器的下一个开关周期 。

公开(公告)号：US11632041B2

公开(公告)日：2023-04-18

申请号：US17444386

申请日：2021-08-04

Applicant: Delta Electronics, Inc.

Inventor： Chao Yan ,  Liping Sun

IPC: H02M1/44 ,  H02M1/12 ,  H02M7/5387 ,  H02M3/158

Abstract: The present disclosure provides power semiconductor module, comprising at least three non-jumping power terminals at a non-jumping potential, wherein multiple power semiconductors and at least one first capacitor are integrated within a package and electrically connected between a first non-jumping power terminal and a second non-jumping power terminal of the at least three non-jumping power terminals; and at least one jumping power terminal at a jumping potential. A first jumping power terminal of the at least one jumping power terminal is electrically connected to one terminal of a power inductor and a third non-jumping power terminal of the at least three non-jumping power terminals is electrically connected to the other terminal of the power inductor; wherein at least one second capacitor is electrically connected between the third non-jumping power terminal and at least one of other non-jumping power terminals.

公开(公告)号：US20210367509A1

公开(公告)日：2021-11-25

申请号：US17444386

申请日：2021-08-04

Applicant: Delta Electronics, Inc.

Inventor： Chao YAN ,  Liping Sun

IPC: H02M1/44 ,  H02M3/158 ,  H02M7/5387 ,  H02M1/12

Abstract: The present disclosure provides power semiconductor module, comprising at least three non-jumping power terminals at a non-jumping potential, wherein multiple power semiconductors and at least one first capacitor are integrated within a package and electrically connected between a first non-jumping power terminal and a second non-jumping power terminal of the at least three non-jumping power terminals; and at least one jumping power terminal at a jumping potential. A first jumping power terminal of the at least one jumping power terminal is electrically connected to one terminal of a power inductor and a third non-jumping power terminal of the at least three non-jumping power terminals is electrically connected to the other terminal of the power inductor; wherein at least one second capacitor is electrically connected between the third non-jumping power terminal and at least one of other non-jumping power terminals.

公开(公告)号：US20140133200A1

公开(公告)日：2014-05-15

申请号：US13836691

申请日：2013-03-15

Applicant: DELTA ELECTRONICS, INC.

Inventor： Liping Sun ,  Chao Yan ,  Yiqing Ye

IPC: H02M1/34

CPC classification number: H02M1/34 ,  H02M2001/344

Abstract: A clamp snubber circuit for reducing a value of a peak voltage on a power switch of a power converter includes: a clamp switch; a clamp capacitor having a first terminal electrically coupled to the power switch via the clamp switch, and a second terminal electrically coupled to a ground; and at least one resistance adjustment circuit, each of which includes: a switch element having a first terminal electrically coupled to the first terminal of the clamp capacitor, a second terminal electrically coupled to the ground, and a control terminal; and a control circuit configured to receive a detection parameter of the power converter and compare the detection parameter with a preset parameter and output a control signal to the control terminal of the switch element to adjust a resistance value of the resistance adjustment circuit. Peak voltages applied on power switches may be clamped and absorbed more effectively.

Abstract translation: 用于降低功率转换器的功率开关上的峰值电压值的钳位缓冲电路包括：钳位开关; 钳位电容器，其具有通过钳位开关电耦合到功率开关的第一端子，以及电耦合到地的第二端子; 以及至少一个电阻调节电路，每个电阻调节电路包括：开关元件，其具有电耦合到钳位电容器的第一端子的第一端子，电耦合到地的第二端子和控制端子; 以及控制电路，被配置为接收功率转换器的检测参数并将检测参数与预设参数进行比较，并将控制信号输出到开关元件的控制端子，以调整电阻调节电路的电阻值。 施加在功率开关上的峰值电压可以更有效地被钳位和吸收。