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公开(公告)号：US09343970B2
公开(公告)日：2016-05-17
申请号：US14270365
申请日：2014-05-06
发明人： Chao Yan , Wei-Qiang Zhang , Li-Zhi Xu , Xin-Lei Li
CPC分类号： H02M3/335 , H02M3/156 , H02M3/33523 , H02M3/33553 , H02M3/33569 , H02M3/33584 , H02M2001/0058 , H02M2001/007 , Y02B70/1491
摘要： A converter and method for reducing voltage of node thereof are disclosed herein. The converter includes a first transmitting circuit and a second transmitting circuit. The first transmitting circuit is configured to receive a first AC voltage. The second transmitting circuit is electrically coupled to the first transmitting circuit and the second transmitting circuit is configured to transmit a second AC voltage according to the first AC voltage. One of the first transmitting circuit and the second transmitting circuit includes at least one divider unit and the other one of the first transmitting circuit and the second transmitting circuit includes at least two divider units. Each of the divider units includes an inductor network and a capacitor network coupled in series. The inductor network and the capacitor network of the adjacent divider units are coupled in series alternately.
摘要翻译： 本文公开了一种用于降低节点电压的转换器和方法。 转换器包括第一发射电路和第二发射电路。 第一发送电路被配置为接收第一AC电压。 第二发送电路电耦合到第一发送电路，第二发送电路被配置为根据第一AC电压发送第二AC电压。 第一发送电路和第二发送电路中的一个包括至少一个除法器单元，第一发送电路和第二发送电路中的另一个包括至少两个除法器单元。 每个分频器单元包括串联耦合的电感器网络和电容器网络。 电感网络和相邻分频器单元的电容网络交替串联。
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公开(公告)号：US09954429B2
公开(公告)日：2018-04-24
申请号：US14637371
申请日：2015-03-03
发明人： Wei-Yi Feng , Wei-Qiang Zhang , Hong-Yang Wu
CPC分类号： H02M1/32 , H02M1/34 , H02M3/04 , H02M7/217 , H02M7/219 , H02M7/487 , H02M7/5387 , H02M2001/342 , H02M2001/344 , H02M2001/346 , H02M2001/348 , Y02B70/1491
摘要： A converter includes a first bridge arm, a second bridge arm, two switch units and a voltage clamp circuit. The first bridge arm includes a first switch unit and a second switch unit that are electrically coupled in series at an output terminal. The second bridge arm includes two voltage sources that are electrically coupled in series at a neutral point terminal. The two switch units are electrically coupled in series at a common connection terminal, and are arranged between the neutral point terminal and the output terminal. The voltage clamp circuit is electrically coupled to the output terminal, the common connection terminal, the neutral point terminal, and one of a positive input terminal or a negative input terminal, and the circuit is shared by the two switch units to clamp voltages across the two switch units.
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公开(公告)号：US09859816B2
公开(公告)日：2018-01-02
申请号：US15279446
申请日：2016-09-29
发明人： Feng Chen , Cheng Lu , Wei-Qiang Zhang , Hong-Yang Wu
IPC分类号： H02M7/537 , H02M7/5387 , H02M7/5395 , H02M7/487 , H02M1/00
CPC分类号： H02M7/537 , H02M7/487 , H02M7/53871 , H02M7/5395 , H02M2001/0025 , H02M2001/0054 , Y02B70/1491
摘要： A method for controlling modulation wave and a three-phase three-wire three-level circuit are provided. The method for controlling modulation wave is applied in the three-phase three-wire three-level circuit. Three bridge arms of the three-phase three-wire three-level circuit correspond to three modulation waves. The three-phase three-wire three-level circuit is controlled by comparing said three modulation waves and a carrier wave. The method for controlling modulation wave includes: obtaining a primary modulation wave from said modulation waves based on currents corresponding to each phase of the three-phase three-wire three-level circuit; and adding a shifting quantity to said three modulation waves such that the primary modulation wave is shifted to a peak value, a valley value, or a middle value between the peak value and the valley value of the carrier wave.
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公开(公告)号：US10111284B2
公开(公告)日：2018-10-23
申请号：US14476695
申请日：2014-09-03
发明人： Wei-Qiang Zhang , Li-Zhi Xu , Zhi-Hui Ding
IPC分类号： H05B33/08
摘要： A light driving circuit includes a first and second illuminant unit, a power conversion unit, a first and second switching unit, and a first control unit. The power conversion unit receives an input voltage and converts the input voltage into an output voltage. The first switching unit is coupled to the first illuminant unit. When the first switching unit is turned on, the first illuminant unit is driven by the output voltage to emit light and generate a first output current. The second switching unit is coupled to the second illuminant unit. When the second switching unit is turned on, the second illuminant unit is driven by the output voltage to emit light and generate a second output current. The first control unit controls the first switching unit and the second switching unit to be turned on/off according to the first output current and the second current, respectively.
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5.发明授权公开(公告)号：US09781804B2
公开(公告)日：2017-10-03
申请号：US14484016
申请日：2014-09-11
发明人： Wei-Qiang Zhang , Xiao-Peng Wang , Zhi-Hui Ding
CPC分类号： H05B33/0887 , H02M3/33507 , H02M3/33523 , H02M2001/0019 , H05B33/0815 , H05B33/0821
摘要： A light regulating apparatus includes a converter, a load circuit, and a controller. The converter is configured to output a load current signal according to a controlling signal. The load circuit is driven by the load current signal. The controller is configured to generate the control signal. The controller includes an error calculation unit, a regulation unit, a feed forward compensation unit, and an addition unit. The error calculation unit is configured to generate a first error signal according to a reference current signal and a feedback signal. The regulation unit is configured to generate a regulating signal according to the error signal. The feed forward compensation unit is configured to generate a feed forward compensation signal according to the reference current signal. The addition unit is configured to generate the control signal according to the regulation signal and the feed forward compensation signal.
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公开(公告)号：US09343975B2
公开(公告)日：2016-05-17
申请号：US14245357
申请日：2014-04-04
发明人： Chao Yan , Wei-Qiang Zhang , Li-Zhi Xu , Xin-Lei Li
CPC分类号： H02M3/33507 , H02J5/005 , H02J50/12 , H02M3/3376 , H02M2007/4815 , Y02B70/1433 , Y02B70/1441
摘要： A power converter includes a primary side compensation capacitor, a transformer and a secondary side compensation capacitor. The primary side compensation capacitor receives a first AC voltage from a first switch circuit. The transformer receives the first AC voltage to generate a second AC voltage. The secondary side compensation capacitor transfers the second AC voltage to a second switch circuit to generate a DC output voltage. The operating frequency of the first switch circuit is set within the 0.8*fa to 1.2*fb, and fb is at most 1.5 times of fa. The primary side compensation capacitor and a primary side leakage inductance of the transformer correspond to a first resonant frequency, the secondary side compensation capacitor and a secondary side leakage inductance of the transformer correspond to a second resonant frequency, fa and fb are the lower one and the higher one of the first and second resonant frequency respectively.
摘要翻译： 功率转换器包括一次侧补偿电容器，变压器和次级侧补偿电容器。 初级侧补偿电容器从第一开关电路接收第一AC电压。 变压器接收第一交流电压以产生第二交流电压。 次级侧补偿电容器将第二AC电压转移到第二开关电路以产生DC输出电压。 第一开关电路的工作频率设定在0.8 * fa〜1.2×fb以内，fb为fa的1.5倍以下。 变压器的初级侧补偿电容器和初级侧漏电感器对应于第一谐振频率，变压器的次级侧补偿电容器和次级侧漏电感器对应于第二谐振频率，fa和fb是较低的， 分别是第一和第二共振频率中较高的一个。
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