专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20220271646A1 Switching Sequence Controlled Current Steering For Stacked Half Bridge Converters 有权
公开(公告)号：US20220271646A1
公开(公告)日：2022-08-25
申请号：US17182856
申请日：2021-02-23
申请人： Apple Inc.
发明人： Jie Lu , Brandon Pierquet , Ashish K. Sahoo
IPC分类号： H02M1/10 , H02J7/04 , H02M5/293 , H02M5/10 , H02M7/21 , H02M7/53 , H02M1/15
摘要： A stacked half bridge converter may be configured to provide an AC output voltage from either a DC or an AC input voltage. The switching devices of the converter may be operated according to a plurality of switching sequences, each switching sequence including one or more switching patterns, each switching pattern including one or more switching states of the switching devices. The switching sequences, patterns, and states may be selected to improve operation of the converter, by regulating the voltage at a neutral point of the converter to reduce ripple, increase switching efficiency, protect the switching devices from overvoltages, and the like.

2. 发明申请

US20210351715A1 Isolated Power Converter And Hydrogen Production System 有权
公开(公告)号：US20210351715A1
公开(公告)日：2021-11-11
申请号：US17134443
申请日：2020-12-27
申请人： SUNGROW POWER SUPPLY CO., LTD.
发明人： Shengwei GONG , Tengfei WANG , Xiaolei SHI , Gaozhou TAO
IPC分类号： H02M7/00 , C01B3/32 , H02M7/21 , H01H9/00 , H05K7/20
摘要： An isolated power converter and a hydrogen production system are provided. An electrical connection structure in the isolated power converter includes N secondary winding output bus bars, N rectifier circuit input bus bars, and a positive-negative bus bar, where N is greater than or equal to 1. A secondary winding may include M tapping points, and the secondary winding output bus bar and the rectifier circuit input bus bar that correspond to the secondary winding each include M copper bars that are insulated and stacked. The M tapping points of the secondary winding overlap the M copper bars of the secondary winding output bus bar at input ends of the M copper bars, respectively. The positive-negative bus bar includes two copper bars that are insulated and stacked.

3. 发明授权

US10958158B2 Controlling discharge of x-capacitance 有权
公开(公告)号：US10958158B2
公开(公告)日：2021-03-23
申请号：US16558842
申请日：2019-09-03
申请人： Infineon Technologies Austria AG
发明人： Shih-Jeng Chen , Shi-Heng Hong , Martin Krueger
IPC分类号： H02M1/32 , H02M7/06 , H02M7/21 , H02M1/00
摘要： An AC/DC converter is operative to receive, via AC input terminals, an AC input signal and to transform the AC input signal into a DC output signal. The AC/DC converter comprises a first DC discharge circuit coupled to AC input terminals. The controller comprises a second DC discharge circuit having a controllable switching element for switching the second DC discharge circuit on and off. The second DC discharge circuit is operative to receive a DC discharge current from the first DC discharge circuit; logic associated with the AC/DC converter repeatedly: receives a DC sense signal from the second DC discharge circuit and determines, based on the value of the DC sense signal within a predetermined measurement time period, loss of the AC input signal. In response to determining loss of the AC input signal, the logic controls activation of the second DC discharge circuit depending on the DC sense signal.

4. 发明授权

US10826382B2 Electronic apparatus and control method thereof 有权
公开(公告)号：US10826382B2
公开(公告)日：2020-11-03
申请号：US16456263
申请日：2019-06-28
申请人： Samsung Electronics Co., Ltd.
发明人： Shinwook Choi , Jeongil Kang , Moonyoung Kim
IPC分类号： H02M1/32 , H01R24/60 , H02M1/42 , H02M7/04 , H02M7/21
摘要： Disclosed is an electronic apparatus including a connector configured to connect the electronic device to an external apparatus; and a power circuit configured to supply power to the connected external apparatus, the power circuit including: a transformer configured to output an output voltage by varying a level of an input voltage; a switching unit comprising a switch configured to perform switching operation for the transformer; a controller configured to control the switching unit to match a level of the output voltage with the external apparatus; and an auxiliary power circuit including an auxiliary winding, and configured to supply power to the controller based on a voltage induced in the auxiliary winding by the output voltage and to decrease the number of turns of the auxiliary winding based on the output voltage having a level greater than or equal to a predetermined value.

5. 发明授权

US10701842B2 Power converter having water passages for cooling power modules 有权
公开(公告)号：US10701842B2
公开(公告)日：2020-06-30
申请号：US15576523
申请日：2015-05-27
申请人： HITACHI, LTD.
发明人： Eiichi Ide , Akitoyo Konno , Shinji Sugimoto
IPC分类号： H02K7/20 , H05K7/20 , H02M7/21 , H02M7/217 , H02K11/33 , H02K9/19 , H02M7/00 , H02M1/08 , H02M7/5395 , H02P27/08
摘要： An object of the invention is to provide a power converter that can be reduced in size. To achieve this, a power converter according to the invention includes: water passages arranged radially from an assumed central axis, each being trapezoid-shaped in cross section; and power modules placed between the water passages such that each of the power modules is sandwiched from both surfaces thereof by the water passages. Each of the power modules has an output terminal and positive and negative terminals on an end face located in a centrifugal direction side with respect to the assumed central axis. Any of the power modules and an adjacent one of the power modules are set in a front-back inverted manner.

6. 发明授权

US10658959B2 Power supply system with first and second AC voltage generators and respective 6-pulse rectifier units 有权
公开(公告)号：US10658959B2
公开(公告)日：2020-05-19
申请号：US16431006
申请日：2019-06-04
申请人： Hamilton Sundstrand Corporation
发明人： Jean-Louis Lando , Pierre Valin-Saunal
IPC分类号： H02M7/21 , H02P9/30 , G05F1/10 , H02K19/34
摘要： A power supply has first and second ac voltage generators. Both of the first and second ac voltage generators are connected to one or more loads and a respective 6-pulse rectifier unit for rectifying ac voltage from each of the first and second power generators to a dc voltage output for the loads, Both of the first and second ac voltage generators includes two 3-phase voltage sources separated by a phase shift. The voltage output from each rectifier unit is coupled to the loads via a respective interphase inductor.

7. 发明申请

US20180351470A1 ISOLATED SYNCHRONOUS RECTIFICATION-TYPE DC/DC CONVERTER 审中-公开
公开(公告)号：US20180351470A1
公开(公告)日：2018-12-06
申请号：US16100467
申请日：2018-08-10
申请人： ROHM CO., LTD.
发明人： Hiroki KIKUCHI
IPC分类号： H02M3/335 , H02M3/337 , H02M1/32 , H02M7/21 , H02J1/10 , H02M3/156 , H02M1/00
CPC分类号： H02M3/33592 , H02J1/102 , H02M1/32 , H02M3/1563 , H02M3/3372 , H02M7/21 , H02M2001/0006 , Y02B70/1475
摘要： A secondary controller drives a light emitting element of a photocoupler such that a detection voltage VOUTS corresponding to an output voltage VOUT generated in an output capacitor C approximates to a reference voltage VREF. A primary controller controls a switching transistor M according to a feedback signal VFB. A protection circuit is activated and drives the light emitting element of the photocoupler when detecting an abnormal state. An auxiliary power supply circuit includes a power supply capacitor C provided separately from the output capacitor C and supplies a power supply voltage VCC to the protection circuit and an anode of the light emitting element of the photocoupler.

8. 发明申请

US20170294848A1 METHOD AND DEVICE FOR AC FED SWITCH MODE POWER SUPPLY BASED ON NORMALLY ON TRANSISTORS 审中-公开
公开(公告)号：US20170294848A1
公开(公告)日：2017-10-12
申请号：US15481747
申请日：2017-04-07
申请人： VISIC TECHNOLOGIES LTD.
发明人： Giora LEVIN , Gregory BUNIN
IPC分类号： H02M5/453 , H02M7/5387 , H02M1/092 , H02M7/21 , H02M1/44
CPC分类号： H02M5/453 , H02M1/092 , H02M1/36 , H02M1/4225 , H02M1/44 , H02M7/21 , H02M7/53873 , H02M2001/0006 , H02M2001/008 , Y02B70/126
摘要： A device for providing high DC voltage using a solid state normally open switch. The solid state switch is controlled to gradually rise the voltage of the DC output by applying ON/OFF modulation scheme. The modulation scheme opens the switch initially for a very short time duration around the zero crossing of the input AC voltage and gradually the duration of the ON state extends until the switch remains constantly open.

9. 发明申请

US20150016162A1 PHOTOVOLTAIC INVERTER WITH SWINGING LINE FILTER INDUCTORS 有权
标题翻译：带有线路滤波电感的光伏逆变器
公开(公告)号：US20150016162A1
公开(公告)日：2015-01-15
申请号：US13940193
申请日：2013-07-11
申请人： Richard Travis West
发明人： Richard Travis West
IPC分类号： H02M7/21
CPC分类号： H02J3/383 , H02M1/126 , H02M7/48 , H02M7/538 , Y02E10/563 , Y02P80/23
摘要： The invention is a high efficiency single-phase or poly-phase DC-to-AC power converter apparatus and power conversion method which includes a line filter inductor or line filter inductors to integrate or filter pulse modulated waveforms into substantially sinusoidal waveforms wherein (i) the line filter inductor or inductors have inductance values that swing substantially from zero current to peak rated current and (ii) a pulse width modulation technique is used that varies both pulse width modulation duty cycles and periods as a function of the predicted instantaneous line filter inductance and the predicted di/dt across the line filter inductor or inductors in order to minimize power converter switching losses while maintaining AC power quality. With the invention, substantial CEC power conversion efficiency enhancements should be achievable and with an overall reduction in power converter parts cost.
摘要翻译：本发明是一种高效率的单相或多相DC-AC电力转换装置和电力转换方法，其包括线路滤波电感器或线路滤波电感器，以将脉冲调制波形集成或滤波成基本正弦波形，其中（i）线路滤波器电感器或电感器具有基本上从零电流摆动到峰值额定电流的电感值，以及（ii）使用脉冲宽度调制技术来改变作为预测的瞬时线路滤波电感的函数的脉冲宽度调制占空比和周期以及线路滤波电感器或电感器上的预测di / dt，以便在保持交流电源质量的同时最小化功率转换器开关损耗。通过本发明，可以实现大量的CEC功率转换效率增强，并且整体上降低了功率转换器部件的成本。

10. 发明申请

US20130182473A1 AUTOMATIC VOLTAGE CONVERSION SYSTEM BASED ON A SINGLECHIP 有权
标题翻译：基于单片机的自动电压转换系统
公开(公告)号：US20130182473A1
公开(公告)日：2013-07-18
申请号：US13691938
申请日：2012-12-03
申请人： STABA ELECTRIC CO., LTD
发明人： Yuhua Deng
IPC分类号： H02M7/21
CPC分类号： H02M7/21 , H02M1/10
摘要： The invention discloses an automatic voltage conversion system based on a singlechip, comprising a control unit, a power circuit unit, a transformer unit, a voltage sampling unit, an output protection unit and a voltage switching unit; wherein, the power circuit unit provides suitable working voltage for the whole circuit; the voltage sampling switching units are respectively connected to the control unit; the transformer unit is connected to the voltage switching unit; the output protection unit input is connected to the control unit, and output protection unit output is connected to the transformer unit; and the control unit, as a control system based on a singlechip, is used for controlling operation of both the voltage switching and output protection units after processing the signal gathered by the voltage sampling unit. The system can perform automatic voltage conversion, and high and low input voltage protection and provide transformer over temperature protection.
摘要翻译：本发明公开了一种基于单片机的自动电压转换系统，包括控制单元，电源电路单元，变压器单元，电压采样单元，输出保护单元和电压切换单元; 其中，电源电路单元为整个电路提供合适的工作电压; 电压采样开关单元分别连接到控制单元; 变压器单元连接到电压切换单元; 输出保护单元输入连接到控制单元，输出保护单元输出连接到变压器单元; 并且作为基于单片机的控制系统的控制单元在处理由电压采样单元收集的信号之后用于控制电压开关和输出保护单元的操作。该系统可以进行自动电压转换，高低输入电压保护，提供变压器过温保护。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式