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公开(公告)号：US09917522B2
公开(公告)日：2018-03-13
申请号：US15538129
申请日：2015-12-28
申请人： HYOSUNG CORPORATION
发明人： June-Sung Kim , Hong-Ju Jung , Jung-Soo Park , Doo-Young Lee , Jong-Yun Choi
CPC分类号： H02M3/33523 , H02M1/08 , H02M3/3353 , H02M7/49 , H02M2001/0006 , H02M2007/4835
摘要： The present invention relates to a power control apparatus for sub-modules in a Modular Multilevel Converter (MMC), which controls the supply of power to sub-modules in an MMC connected to an HVDC system and to a STATCOM. The power control apparatus includes a half-bridge circuit unit for switching multiple switches, converting an input voltage across P and N buses of the MMC into a relatively low voltage, and outputting the low voltage; a transformer for transferring the low output voltage (primary side), output through switching of the switches in the half-bridge circuit unit via switching of the switches, to a secondary side of the transformer; a DC/DC converter for converting an output voltage on the secondary side of the transformer; a photocoupler for outputting a reference signal corresponding to a magnitude of the secondary side output voltage of the transformer; a Pulse Width Modulation (PWM) control unit for controlling switching of the switches in the half-bridge circuit unit in response to the reference signal output from the photocoupler; and a starting circuit unit for supplying an initial starting voltage to the PWM control unit, wherein the PWM control unit is started in response to the starting voltage initially supplied from the starting circuit unit, and is configured to control switching of the switches in response to the reference voltage received from the photocoupler, and to receive the secondary side output voltage of the transformer as an operating voltage depending on the switching, thus being operated.
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公开(公告)号：US09876435B2
公开(公告)日：2018-01-23
申请号：US15297818
申请日：2016-10-19
发明人： Daoshen Chen , Heping Dai , Xujun Liu , Liming Ye , Dianbo Fu
CPC分类号： H02M3/33546 , H02M1/08 , H02M1/088 , H02M1/14 , H02M1/36 , H02M3/3353 , H02M3/33553 , H02M3/33576 , H02M3/33592 , H02M3/3385 , H02M7/4807 , H02M2001/0006 , H02M2001/0058 , H02M2007/4818 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491 , Y02P80/112
摘要： A method comprises providing a resonant converter comprising a switching network comprising a first high-side switch, a second high-side switch, a first low-side switch and a second low-side switch, a resonant tank coupled between the switching network and a transformer and a rectifier coupled to a secondary side of the transformer, coupling a driver to the switching network and the rectifier, wherein the driver includes a first winding coupled to the rectifier, a second winding coupled to the first high-side switch and a third winding coupled to the second high-side switch, detecting a signal indicating a soft switching process of the driver and adjusting a resonant frequency of the driver until the resonant frequency of the driver approximately matches a switch frequency of the resonant converter.
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公开(公告)号：US09837918B2
公开(公告)日：2017-12-05
申请号：US14474179
申请日：2014-08-31
发明人： Yi-Qing Ye , Chao Yan , Li-Ping Sun
CPC分类号： H02M3/33569 , H02M3/3353 , H02M3/3376 , H02M2001/0032 , H02M2001/0054 , Y02B70/1433 , Y02B70/1491 , Y02B70/16
摘要： A converter circuit includes an inverter and a controller. The inverter is configured to receive an input voltage and to convert the input voltage into a primary-side alternating-current (AC) voltage in a first inversion mode or a second inversion mode. Each of a first switch unit and a second switch unit in the inverter includes switches. When the converter circuit works in the first inversion mode, the controller controls switches of the first switch unit and the second switch unit to cooperatively switch on and switch off periodically according to an output voltage corresponding to the primary-side AC voltage. When the converter circuit works in the second inversion mode, the controller controls the first switch unit to operate independently, in which the switches of the first switch unit switch on and switch off periodically.
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公开(公告)号：US09729069B2
公开(公告)日：2017-08-08
申请号：US14303948
申请日：2014-06-13
发明人： Tetsuya Kawashima
CPC分类号： H02M3/33546 , H02M3/33515 , H02M3/3353 , H02M3/33553 , H02M2001/0025 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491 , Y02P80/112
摘要： A control section for a current resonant converter section controls a DC output voltage of a current resonant converter section to settle to a target voltage by varying a resonant period between predetermined two resonant periods based on an error signal between the DC output voltage and the target voltage. A gain converter is provided in a preceding stage of a frequency generator for generating a square waveform signal with a duty ratio of 50% and the gain converter has a setting of a nonlinear gain characteristic that cancels nonlinearity in the input-output characteristics of the current resonant converter section. The nonlinear gain characteristic can be a characteristic of continuous gain conversion or discrete gain conversion.
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65.发明授权公开(公告)号：US09727125B2
公开(公告)日：2017-08-08
申请号：US14177504
申请日：2014-02-11
申请人： Jun Muto
发明人： Jun Muto
CPC分类号： G06F1/3293 , H02M3/1584 , H02M3/285 , H02M3/3353 , H02M3/33561 , H02M3/33584 , H02M2001/0025 , H02M2001/0064
摘要： A power supply system includes a plurality of power supply circuits connected to a common output node and a control unit that controls outputs of the plurality of power supply circuits such that an output value at the output node follows an output target value at the output node. The control unit is configured to change the output of part of the plurality of power supply circuits when there is a deviation smaller than or equal to a predetermined value between the output value and the output target value.
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公开(公告)号：US09667153B2
公开(公告)日：2017-05-30
申请号：US14785530
申请日：2014-05-27
发明人： Shoichi Hara , Kazuyuki Sakiyama , Akira Minegishi
CPC分类号： H02M3/33507 , B60L11/1811 , H02M3/3353 , H02M2001/0032 , H02M2001/0058 , Y02B70/1491 , Y02B70/16
摘要： A switching power supply apparatus includes: an DC/AC converter unit for converting a DC voltage to an AC voltage based on switching operation of switching devices; a transformer for converting the AC voltage to an AC voltage having a voltage value; a resonance circuit provided between the DC/AC converter unit and the transformer; an AC/DC converter circuit for converting an AC voltage from the transformer to a DC; an output detector unit for detecting an output voltage or an output current of the apparatus; a duty ratio controller unit for controlling a duty ratio of switching of the apparatus such that a detected output voltage or current becomes a target value; an energy detector unit for detecting an energy accumulated in the resonance circuit; and a controller unit for controlling a switching frequency such that a detected energy becomes a threshold value.
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67.发明授权公开(公告)号：US09667149B2
公开(公告)日：2017-05-30
申请号：US14743596
申请日：2015-06-18
申请人： DENSO CORPORATION
发明人： Kiyokazu Akiyama , Shinji Ohoka , Yuuki Takemoto
CPC分类号： H02M3/285 , H02M1/14 , H02M3/3353 , H02M3/33569
摘要： An electric power converter apparatus incorporates a plurality of electric power converter circuits having respective output terminals connected in common, with output power being produced from the common output terminals. Each converter circuit uses an identical switching frequency, in executing power conversion based on PWM control of switching by a plurality of switching elements. The switching operations of the respective converter circuits mutually differ in phase, by an amount determined in accordance with the currently applied PWM duty ratio. The phase difference value is predetermined for minimizing the amplitude of specific harmonic frequency components of a ripple current component in the output current from the apparatus.
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公开(公告)号：US09515562B2
公开(公告)日：2016-12-06
申请号：US13786317
申请日：2013-03-05
发明人： Heping Dai , Dianbo Fu
CPC分类号： H02M3/3353 , H02M3/33592 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
摘要： A resonant tank comprises a resonant inductor coupled to a switching network and a transformer, a resonant capacitor coupled to the switching network and the transformer, a first parallel inductor implemented as a magnetizing inductance and a second parallel inductor implement as a separate inductor, wherein a first inductance of the first parallel inductor is greater than a second inductance of the second parallel inductor.
摘要翻译： 谐振箱包括耦合到开关网络和变压器的谐振电感器，耦合到开关网络和变压器的谐振电容器，实现为磁化电感的第一并联电感器和作为单独电感器的第二并联电感器器件，其中a 第一并联电感器的第一电感大于第二并联电感器的第二电感。
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公开(公告)号：US20160323945A1
公开(公告)日：2016-11-03
申请号：US14700927
申请日：2015-04-30
申请人： Hubbell Incorporated
发明人： Michael Bandel
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H02M1/14 , H02M1/4208 , H02M3/156 , H02M3/3353 , H02M2001/007 , H05B33/0845 , Y02B70/126
摘要： LED systems and circuits for generating a driver output for powering one or more LED devices are provided. A dimmable driver circuit can include a controller configured to reduce output ripple current to reduce flicker over the dimming range of the LED system. The dimmable driver circuit can receive a dimming control signal (e.g. a 0V to 10V dimming control signal) over an isolated dimming interface to reduce leakage current at the dimming interface. In addition, a dual-switch flyback converter circuit can be employed to increase efficiency of the driver circuit as well as to reduce electromagnetic interference (EMI) with the LED devices, such as EMI resulting from differential mode noise.
摘要翻译： 提供了用于产生用于为一个或多个LED器件供电的驱动器输出的LED系统和电路。 可调光驱动器电路可以包括被配置为减少输出纹波电流以减少在LED系统的调光范围内的闪烁的控制器。 可调光驱动器电路可以在隔离的调光接口上接收调光控制信号（例如0V至10V调光控制信号），以减少调光接口处的泄漏电流。 此外，可以采用双开关反激转换器电路来提高驱动器电路的效率，并且降低LED器件的电磁干扰（EMI），例如由差模噪声引起的EMI。
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70.发明授权公开(公告)号：US09467054B2
公开(公告)日：2016-10-11
申请号：US14074246
申请日：2013-11-07
发明人： Heping Dai , Xujun Liu , Liming Ye , Daoshen Chen
CPC分类号： H02M3/335 , H02M3/3353 , H02M3/33538 , H02M3/33576 , H02M2001/0009 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： An apparatus comprises a magnetic device coupled to an inductor-inductor-capacitor (LLC) resonant converter, an ac current sensing circuit coupled to the magnetic device, an average current sensing circuit coupled to the ac current sensing circuit and a reference voltage source coupled to the average current sensing circuit, wherein the reference voltage source is configured such that a magnitude of an average signal from the average current sensing circuit is greater than a voltage level of the reference voltage source.
摘要翻译： 一种装置包括耦合到电感器 - 电感器 - 电容器（LLC）谐振转换器的磁性装置，耦合到磁性装置的交流电流检测电路，耦合到交流电流检测电路的平均电流检测电路和耦合到 平均电流感测电路，其中参考电压源被配置为使得来自平均电流感测电路的平均信号的幅度大于参考电压源的电压电平。
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