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公开(公告)号：US12062977B2
公开(公告)日：2024-08-13
申请号：US17797021
申请日：2021-02-04
申请人： Pulsiv Limited
发明人： Mohammed Ahmed
IPC分类号： H02M1/42
CPC分类号： H02M1/4266
摘要： An electrical conversion apparatus for use in current shaping comprising at least two capacitors connected in series between first and second lines, a first diode connected in parallel across the first capacitor, a second diode connected in parallel across the second capacitor, and a constant current device connected in series with the first and second capacitors.
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公开(公告)号：US20240235416A9
公开(公告)日：2024-07-11
申请号：US18489268
申请日：2023-10-18
发明人： Yuchen ZHOU
CPC分类号： H02M7/2173 , H02M1/4233 , H02M1/4266 , H02M7/05 , H02M7/219 , B60L53/53
摘要： A charging module and a charging device. The charging module includes a three-phase rectifier module, a bus capacitor module, an inductor, and a controller. An input end of the three-phase rectifier module is electrically connected to an input power supply, and an output end of the three-phase rectifier module is electrically connected to an input end of the bus capacitor module. The bus capacitor module includes a first bus capacitor and a second bus capacitor. The first bus capacitor is connected between a first output end of a three-phase bridge arm and a midpoint of the three-phase bridge arm, and the second bus capacitor is electrically connected between a second output end of the three-phase bridge arm and the midpoint. The inductor is electrically connected to the midpoint of the three-phase bridge arm and a midpoint between the first bus capacitor and the second bus capacitor.
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公开(公告)号：US11750087B2
公开(公告)日：2023-09-05
申请号：US16332641
申请日：2018-05-24
发明人： Jun Liu , Guangqun Li , Liren Wang
CPC分类号： H02M1/4208 , H02M1/4266 , H02M7/23 , H02M1/0009 , H02M1/0085 , H02M1/4225
摘要： An electric power supply includes a totem pole bridgeless PFC power converter. The PFC power converter includes an input for coupling to an AC power source, an output, four switching devices coupled between the input and the output, two diodes coupled between the four switching devices and the input, a first inductor coupled between the four switching devices and the two diodes, and a second inductor coupled between the two diodes and the input. Other example electric power supplies and totem pole bridgeless PFC power converters are also disclosed.
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公开(公告)号：US20190165685A1
公开(公告)日：2019-05-30
申请号：US15827194
申请日：2017-11-30
发明人： Anders Lind , Andrey Malinin
CPC分类号： H02M3/33523 , H02M1/08 , H02M1/143 , H02M1/4258 , H02M1/4266 , H02M3/33569 , H02M2001/0032
摘要： Circuits and methods are provided for supplying power to a transformer of a switching DC/DC voltage converter within a power converter. The power converter includes separate nodes that can potentially supply such power. A first of these nodes is coupled, typically directly and with no energy-storing bulk capacitor, to a rectifier that supplies rectified power from an alternating current power source. A second node is also supplied power from the rectifier, but is coupled to a bulk capacitor that can store and supply energy as needed. The techniques disclosed herein use the first node to supply power to the transformer when feasible, and use the second node, and its associated bulk capacitor, to supply power otherwise. In so doing, the energy storage requirements of the bulk capacitor may be reduced, meaning that the capacitance and associated size of the bulk capacitor may be reduced relative to other power converter circuits.
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公开(公告)号：US09923451B2
公开(公告)日：2018-03-20
申请号：US15095885
申请日：2016-04-11
发明人： Liming Ye , Heping Dai , Dianbo Fu
CPC分类号： H02M1/14 , G05F5/00 , H02M1/15 , H02M1/4266 , H02M7/066 , Y02B70/123
摘要： A configurable impedance circuit is provided, including a filter for filtering a received DC voltage and a controller. The filter includes a first capacitor, a second capacitor, and a selectable switch coupled in series with the second capacitor and coupled to receive a control signal. The selectable switch and the second capacitor are selectively coupled in parallel with the first capacitor. The controller is connected to sense a differential voltage across the second capacitor and configured to generate the control signal to open or close the selectable switch based on the differential voltage across the second capacitor, so as to maintain a voltage range across the second capacitor. According to disclosure of the present invention, the total physical size of the capacitors is reduced and the size of the power supply is reduced accordingly.
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公开(公告)号：US09825560B2
公开(公告)日：2017-11-21
申请号：US14489078
申请日：2014-09-17
IPC分类号： H02M7/46 , H02M3/28 , H02M7/217 , H02P6/00 , H02M1/42 , H01F17/04 , H02M1/12 , H02M3/158 , H01F17/00
CPC分类号： H02P6/28 , H01F17/04 , H01F2017/0093 , H02M1/126 , H02M1/4225 , H02M1/4266 , H02M3/1584 , H02M2001/123 , H02P6/002 , H02P2201/09 , H02P2201/15 , Y02B70/126
摘要： An interleaved bridgeless power factor correction (PFC) converter-based motor drive system is provided. The system includes a first inductor coupled to a second inductor. The coupled first and second inductors are coupled to a first input configured to be coupled to a first line of an alternating current (AC) power supply. The system also includes a third inductor coupled to a fourth inductor. The coupled third and fourth inductors are coupled to a second input configured to be coupled to a second line of the AC power supply. The system further includes a digital active power factor correction (PFC) controller configured to cause current in at least one of the coupled first and second inductors and the coupled third and fourth inductors to be interleaved.
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公开(公告)号：US20170302162A1
公开(公告)日：2017-10-19
申请号：US15419464
申请日：2017-01-30
发明人： Charles E. GREEN
CPC分类号： H02M1/4266 , H02M1/08 , H02M1/12 , H02M1/126 , H02M1/15 , H02M1/42 , H02M1/4225 , H02M1/44 , H02M5/42 , H02M2001/0025 , H02M2001/4291 , Y02B70/126
摘要： A power factor correction (PFC) system includes an error control module that determines a first current demand based on a difference between a desired direct current (DC) voltage and a measured DC voltage. A filter module applies a filter to the first current demand to produce a second current demand. A weighting module (i) based on the difference, determines first and second weighting values for the first and second current demands, respectively, (ii) determines a third current demand based on the first current demand and the first weighting value, and (iii) determines a fourth current demand based on the second current demand and the second weighting value. A current demand module determines a final current demand based on the third current demand and fourth current demand. A current control module controls switching of a switch of a PFC device based on the final current demand.
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公开(公告)号：US20170294830A1
公开(公告)日：2017-10-12
申请号：US15095885
申请日：2016-04-11
发明人： Liming YE , Heping DAI , Dianbo FU
CPC分类号： H02M1/14 , G05F5/00 , H02M1/15 , H02M1/4266 , H02M7/066 , Y02B70/123
摘要： A configurable impedance circuit is provided, including a filter for filtering a received DC voltage and a controller. The filter includes a first capacitor, a second capacitor, and a selectable switch coupled in series with the second capacitor and coupled to receive a control signal. The selectable switch and the second capacitor are selectively coupled in parallel with the first capacitor. The controller is connected to sense a differential voltage across the second capacitor and configured to generate the control signal to open or close the selectable switch based on the differential voltage across the second capacitor, so as to maintain a voltage range across the second capacitor. According to disclosure of the present invention, the total physical size of the capacitors is reduced and the size of the power supply is reduced accordingly.
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公开(公告)号：US20170170720A1
公开(公告)日：2017-06-15
申请号：US15153608
申请日：2016-05-12
申请人： Noble Corporation
发明人： Bo Gao
CPC分类号： H02M1/4208 , H02M1/4266 , H02M3/26 , H05B33/0815 , H05B33/0845 , Y02B70/123
摘要： A power supply circuit includes: an anti-electromagnetic interference circuit configured to receive input alternating current power and to output filtered alternating current power; a rectifier circuit configured to rectify the filtered alternating current power; a current correction circuit configured to perform passive power factor correction on the rectified alternating current power; a single-ended flyback converter circuit coupled to the output of the current correction circuit; and a dimming control circuit coupled between the output of the single-ended flyback converter circuit and a light load, wherein the current correction circuit is configured to control a waveform of the rectified alternating current power to follow a current output to the light load in order to provide passive power factor correction.
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公开(公告)号：US20170047859A1
公开(公告)日：2017-02-16
申请号：US15339811
申请日：2016-10-31
申请人： Laurence P. Sadwick
发明人： Laurence P. Sadwick
CPC分类号： H02M7/06 , H02J7/0052 , H02J7/022 , H02M1/4266 , H02M1/44 , H02M7/103 , H05B33/0815 , H05B33/0845 , H05B37/00 , H05B41/28 , Y02B70/123
摘要： A power supply includes an alternating current input, a rectifier operable to generate a rectified signal based on the alternating current input, a voltage multiplier configured to generate a multiplied voltage based on the alternating current input, and an output configured to yield an electrical current based on the rectified signal from the rectifier and on the multiplied voltage from the voltage multiplier. Current is drawn from the alternating current input only during a fraction of each half-cycle of a waveform at the alternating current input.
摘要翻译： 电源包括交流输入，整流器，其可操作以基于交流输入产生整流信号;电压倍增器，被配置为基于交流输入产生倍增电压;以及输出，其被配置为产生基于电流的电流 来自整流器的整流信号和来自电压倍增器的倍增电压。 电流仅在交流输入的波形的每个半周期的一小部分内从交流输入引出。
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