-
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
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：US10103634B2
公开(公告)日：2018-10-16
申请号：US15064687
申请日：2016-03-09
Applicant: DELTA ELECTRONICS, INC.
Inventor： Jianhong Zeng , Chao Yan , Haoyi Ye , Peiqing Hu
Abstract: A power converter device, includes switching devices and a controller, to realize conversion between power supplies by controlling on and off the switching devices via the controller. The switching devices include: at least one normally-on type switching device and at least one normally-off type switching device both having an operation frequency greater than 1 kHz and connected in series. The controller outputs a first and second control signal to correspondingly control the normally-on type switching device and the normally-off type switching device to control the normally-off type switching device to be turned on after the normally-on type switching device to be turned off. The present disclosure uses the normally-off type switching device originally disposed in the circuit, having a voltage blocking ability, to realize directly usage of the normally-on type switching device to improve efficiency and power density of switching power supply.
-
公开(公告)号：US10056780B2
公开(公告)日：2018-08-21
申请号：US14953001
申请日：2015-11-26
Applicant: DELTA ELECTRONICS, INC.
Inventor： Pei-Qing Hu , Chao Yan , Jian-Hong Zeng
CPC classification number: H02J9/061 , H02J7/0068 , H02M1/12 , H02M3/33507 , H02M3/33569 , H02M2001/0058 , Y02B70/1491
Abstract: A power supply system includes a first converting stage, a second converting stage, and a third converting stage. The first converting stage is configured to generate a first voltage according to a first input voltage. The second converting stage is coupled to the first converting stage in series, and includes a first non-regulated power converter and a second non-regulated power converter. The first non-regulated power converter is configured to generate a second voltage according to the first voltage. The second non-regulated power converter is configured to generate a third voltage according to the second voltage. The second voltage is higher than the third voltage, and a varying range of the second voltage is wider than a varying range of the third voltage. The third converting stage is configured to generate a first output voltage according to the third voltage.
-
公开(公告)号：US09577528B2
公开(公告)日：2017-02-21
申请号：US14792628
申请日：2015-07-07
Applicant: DELTA ELECTRONICS, INC.
Inventor： Li-Ping Sun , De-Sheng Guo , Chao Yan
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: 功率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：US09270188B2
公开(公告)日：2016-02-23
申请号：US14056965
申请日：2013-10-18
Applicant: DELTA ELECTRONICS, INC.
CPC classification number: H02M3/33569 , H02M3/33507 , H02M3/3376 , H02M2001/0058 , Y02B70/1491
Abstract: Disclosed herein is a direct current to direct current (DC-DC) converter. The DC-DC converter includes a first bridge and a second bridge. The first bridge includes a first switch and a second switch, whereas the second bridge includes a third switch and a fourth switch. The second bridge is in parallel connection with the first bridge. The second switch is in series connection with the first switch, and the fourth switch is in series connection with the third switch. The DC-DC converter switches between a first mode and a second mode based on a detection signal. Further, a method for controlling the DC-DC converter is also disclosed herein.
Abstract translation: 这里公开了直流到直流（DC-DC）转换器的直流电。 DC-DC转换器包括第一桥和第二桥。 第一桥包括第一开关和第二开关，而第二桥包括第三开关和第四开关。 第二座桥与第一座桥并联。 第二开关与第一开关串联连接，第四开关与第三开关串联连接。 DC-DC转换器基于检测信号在第一模式和第二模式之间切换。 此外，还公开了一种用于控制DC-DC转换器的方法。
-
Patent Agency Ranking
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：US09692305B2
公开(公告)日：2017-06-27
申请号：US14958898
申请日：2015-12-03
Applicant: DELTA ELECTRONICS, INC.
Inventor： Chao Yan , Yi-Qing Ye , Zhi-Zhen Lian
CPC classification number: H02M3/285 , H02M2001/0058 , Y02B70/1491
Abstract: A method for controlling a resonant DC/DC power converting circuit is provided. The resonant DC/DC power converting circuit having a converter output and a converter input comprises at least two converters having similar structures and outputs connected in parallel as said converter output, and a controller. Each converter comprises a full-bridge inverter unit and a resonant unit. The full-bridge inverter unit is configured with at least four switches. The resonant unit is coupled with said full-bridge inverter unit. The controller outputs two groups of driving control signals to drive four switches in said two converters respectively. The method comprises: making said two converters operate at the same frequency and interleave with preset phase shift; and making two of driving control signals in one group interleave with preset angle to reduce output current of said converter corresponding controlled thereby, when output currents of said two converters are not approximately equal.
-
公开(公告)号：US09634556B2
公开(公告)日：2017-04-25
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
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.
-
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
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 。
-
10.发明授权公开(公告)号：US09042122B2
公开(公告)日：2015-05-26
申请号：US13845705
申请日：2013-03-18
Applicant: DELTA ELECTRONICS, INC.
Inventor： Yiqing Ye , Chao Yan , Zhimin Suo
CPC classification number: H02M3/28 , H02M3/337 , H02M7/487 , H02M2001/0074
Abstract: A power converter and a method for balancing voltages across input capacitors are disclosed in the present application. The power converter includes: two DC input terminals; a first input capacitor and a second input capacitor; a first bridge arm and a second bridge arm connected in series with one another; and an output circuit configured to generate a signal required by the power converter based on the signals at a midpoint of the first bridge arm and a midpoint of the second bridge arm. The power converter further includes: a first voltage balancing unit and a second balancing unit configured to reduce a voltage difference between the first input capacitor and the second input capacitor. The power converter provided by the present application solves the problem of imbalance in the voltages across the first input voltage and the second input voltage.
Abstract translation: 在本申请中公开了功率转换器和用于平衡输入电容器两端的电压的方法。 电源转换器包括：两个直流输入端子; 第一输入电容器和第二输入电容器; 第一桥臂和第二桥臂彼此串联连接; 以及输出电路，被配置为基于在所述第一桥臂的中点处的信号和所述第二桥臂的中点产生所述功率转换器所需的信号。 功率转换器还包括：第一电压平衡单元和第二平衡单元，被配置为减小第一输入电容器和第二输入电容器之间的电压差。 由本申请人提供的功率转换器解决了跨越第一输入电压和第二输入电压的电压不平衡的问题。
-
-
-
-
-
-
-
-
-
Search Results
17
records
(took 0.017 seconds)
