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公开(公告)号：US20180287487A1
公开(公告)日：2018-10-04
申请号：US15903710
申请日：2018-02-23
发明人： Saijun Mao , Stefan Schroeder , Jingkui Shi , He Xu , Marius Michael Mechlinski , Bo Qu , Zhihui Yuan , Yingqi Zhang , Jie Shen
CPC分类号： H02M1/34 , H02M3/158 , H02M2001/344 , H02M2001/348 , H03K17/08142 , H03K17/102
摘要： The present disclosure relates to a snubber circuit which comprises a static snubber unit, connected in parallel with the switch, for balancing a static voltage sharing across a switch when the switch is in a state of turn-on or turn-off; and a dynamic snubber unit for balance a dynamic voltage sharing across the switch when the switch is in a process of turn-on or turn-off, comprising a dynamic voltage sharing capacitor connected in parallel with the switch and having a relationship between a capacitance and a voltage of the dynamic voltage sharing capacitor; and a controller for controlling the capacitance of the dynamic voltage sharing capacitor to be in a predetermined working area of capacitance rising while the voltage across the switch is increasing. The present disclosure also relates to a power semiconductor device.
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公开(公告)号：US20180254710A1
公开(公告)日：2018-09-06
申请号：US15973900
申请日：2018-05-08
发明人： Zhao-Jun Wang , Dibyendu Rana
CPC分类号： H02M3/33507 , H02M1/08 , H02M1/14 , H02M1/34 , H02M1/44 , H02M3/33569 , H02M2001/0009 , H02M2001/0048 , H02M2001/344
摘要： A method for reducing electromagnetic interference in a flyback converter includes activating a first switch to generate a primary current therein. The first switch is deactivated to generate a secondary current from a magnetic flux generated by the primary current. The magnetic flux is removed by the generation of the secondary current. A second switch is activated with a first voltage pulse to limit an excess voltage across the first switch. The excess voltage is generated in response to the deactivation of the first switch. A second switch is activated with a second voltage pulse to limit a voltage oscillation across the first switch. The voltage oscillation occurs after the removal of the magnetic flux. A first pulse width of the first voltage pulse is increased by a first jitter delay. A second pulse width of the second voltage pulse is increased by a second jitter delay.
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公开(公告)号：US09960678B2
公开(公告)日：2018-05-01
申请号：US15628769
申请日：2017-06-21
CPC分类号： H02M3/156 , H02M3/07 , H02M3/1582 , H02M2001/0058 , H02M2001/344 , H02M2003/1555 , H02M2003/1566
摘要： In a power converter, a first electrical path connects between the series resonant circuit and a selected terminal from the high- and low-side input and output terminals of the power converter. An auxiliary diode is provided on one of the series resonant circuit and the first electrical path. An auxiliary switch, when turned on, causes an inductor current to flow through the auxiliary diode to the resonance inductor, thus storing electromagnetic energy into the resonance inductor, and causes the resonance inductor and the capacitance component of the series resonant circuit to resonate with each other. A second electrical path bypasses the auxiliary switch for flow of the inductor current. A discharge unit is provided on the second electrical path. The discharge unit is activated to discharge the electromagnetic energy stored in the resonance inductor via the second electrical path.
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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：US09847642B2
公开(公告)日：2017-12-19
申请号：US14770726
申请日：2013-12-02
CPC分类号： H02J3/36 , H02J2003/365 , H02M1/34 , H02M5/458 , H02M2001/344 , H02M2007/4835 , Y02E60/60
摘要： One circuit includes first and second primary terminals for connection to first and second power transmission lines and a current transmission path extending between the primary terminals and having current transmission path portions separated by a third primary terminal. A first current transmission path portion includes at least one primary switching element connected in series between the first and third primary terminals, the second current transmission path portion includes an energy conversion block connected between the second and third primary terminals, and the energy conversion block includes at least one primary energy conversion element for removing energy from the power transmission lines. The control circuit further includes a converter limb connected across the second and third primary terminals that includes an auxiliary converter. The control circuit further includes a control unit which controls the auxiliary converter to selectively provide a voltage source.
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公开(公告)号：US20170346384A1
公开(公告)日：2017-11-30
申请号：US15532511
申请日：2015-12-03
CPC分类号： H02M1/08 , H02M1/088 , H02M1/34 , H02M5/45 , H02M2001/0054 , H02M2001/344 , H03K17/08144 , H03K17/105
摘要： A semiconductor switching circuit, for use in a HVDC power converter, comprising: a main semiconductor switching element, including first and second connection terminals between which current flows from the first connection terminal to the second connection terminal and an auxiliary semiconductor switching element electrically connected between the first and second connection terminals thereof, and a control unit, operatively connected to auxiliary semiconductor switching element and programmed to control the switching element to create an alternative current path between the first and second connection terminals by at least two of: a fully-on mode in which the switching element is operated at its maximum rated base current or gate voltage; a pulsed switched mode in which the switching element is turned on and off; and an active mode in which the switching element is operated with a continuously variable base current or gate voltage.
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公开(公告)号：US20170302214A1
公开(公告)日：2017-10-19
申请号：US15487101
申请日：2017-04-13
IPC分类号： H02P27/08 , H02M1/42 , F04C28/28 , F04C29/00 , F04B13/00 , F04B49/10 , F04B49/06 , H02M1/44 , F04B17/03 , F04C18/02
CPC分类号： H02P27/08 , F04B13/00 , F04B17/03 , F04B35/04 , F04B49/06 , F04B49/10 , F04B49/20 , F04C18/0215 , F04C28/28 , F04C29/0085 , F04C2240/40 , F25B31/02 , F25B49/025 , F25B2600/021 , F25B2700/21152 , H02M1/42 , H02M1/4208 , H02M1/4225 , H02M1/44 , H02M2001/344 , H02P23/26 , H02P27/06 , Y02B30/741 , Y02B70/126
摘要： A drive includes an inverter power circuit that applies power to an electric motor of a compressor from a direct current (DC) voltage bus. A power factor correction (PFC) circuit outputs power to the DC voltage bus based on input alternating current (AC) power. The PFC circuit includes: (i) a switch having a first terminal, a second terminal, and a control terminal; (ii) a driver that switches the switch between open and closed states based on a control signal; (iii) an inductor that charges and discharges based on switching of the switch; and (iv) a circuit that outputs a signal indicating whether the switch is in the open state or the closed state based on a voltage across the first and second terminals of the switch.
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公开(公告)号：US20160013649A1
公开(公告)日：2016-01-14
申请号：US14770726
申请日：2013-12-02
CPC分类号： H02J3/36 , H02J2003/365 , H02M1/34 , H02M5/458 , H02M2001/344 , H02M2007/4835 , Y02E60/60
摘要： The present disclosure relates to control circuits. One circuit includes first and second primary terminals for connection to first and second power transmission lines and a current transmission path extending between the primary terminals and having current transmission path portions separated by a third primary terminal. A first current transmission path portion includes at least one primary switching element connected in series between the first and third primary terminals, the second current transmission path portion includes an energy conversion block connected between the second and third primary terminals, and the energy conversion block includes at least one primary energy conversion element for removing energy from the power transmission lines. The control circuit further includes a converter limb connected across the second and third primary terminals that includes an auxiliary converter. The control circuit further includes a control unit which controls the auxiliary converter to selectively provide a voltage source.
摘要翻译： 本公开涉及控制电路。 一个电路包括用于连接到第一和第二电力传输线的第一和第二主端子以及在主端子之间延伸并具有由第三主端子分开的电流传输路径部分的电流传输路径。 第一电流传输路径部分包括串联连接在第一和第三主端子之间的至少一个初级开关元件，第二电流传输路径部分包括连接在第二和第三主端子之间的能量转换块，并且能量转换块包括 至少一个用于从输电线路去除能量的一次能量转换元件。 控制电路还包括连接在包括辅助转换器的第二和第三主端子之间的转换器支路。 控制电路还包括控制单元，其控制辅助转换器以选择性地提供电压源。
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公开(公告)号：US08964428B2
公开(公告)日：2015-02-24
申请号：US13719229
申请日：2012-12-19
发明人： Katsutoshi Yamanaka
CPC分类号： H02M5/458 , H02M5/297 , H02M2001/0064 , H02M2001/344 , H02M2001/346 , H02M2001/348 , H02M2005/2932 , H02M2007/53876 , Y02B70/1491
摘要： A power conversion device according to embodiments includes a plurality of switch groups, a plurality of inductors, and a snubber circuit. The switch groups are respectively provided for input phases and each of the switch groups has a plurality of one-way switches that connects the corresponding input phase and output phases. The plurality of inductors are respectively connected between the input phases and the switch groups, and are coupled to one another so that current flowing through the one-way switch of one switch group moves to and continues to flow through the turned-on one-way switch of the other switch group when the one-way switch of the one switch group is turned off. The snubber circuit clamps a voltage based on the maximum voltage occurring on the plurality of inductors to a predetermined value.
摘要翻译： 根据实施例的电力转换装置包括多个开关组，多个电感器和缓冲电路。 开关组分别设置用于输入相位，并且每个开关组具有连接相应的输入相位和输出相位的多个单向开关。 多个电感器分别连接在输入相和开关组之间，并且彼此耦合，使得流过一个开关组的单向开关的电流移动并继续流过导通单向 当一个开关组的单向开关关闭时，另一个开关组的开关。 缓冲电路基于多个电感器上发生的最大电压将电压钳位到预定值。
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公开(公告)号：US20140160817A1
公开(公告)日：2014-06-12
申请号：US13781458
申请日：2013-02-28
发明人： In Wha JEONG , Bum Seok SUH , Kwang Soo KIM
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02M1/4225 , H02M3/158 , H02M2001/344 , Y02B70/126
摘要： There are provided a power factor correction circuit, and a power supply including the same, the power factor correction circuit including a main switch adjusting a phase difference between a current and a voltage of input power, a main inductor storing or discharging the power according to switching of the main switch, a snubber circuit unit including a snubber switch forming a transfer path for surplus power present before the main switch is turned on and a snubber inductor adjusting an amount of a current applied to the snubber switch, and a reduction circuit unit including an auxiliary inductor inductively coupled to the snubber inductor and an auxiliary resistor consuming power induced from the snubber inductor through the auxiliary inductor.
摘要翻译： 提供功率因数校正电路和包括该功率因数校正电路的电源，所述功率因数校正电路包括调整输入电力的电流和电压之间的相位差的主开关，根据 主开关的切换，包括形成用于在主开关导通之前存在的剩余电力的传输路径的缓冲开关的缓冲电路单元和调节施加到缓冲开关的电流量的缓冲电感器，以及还原电路单元 包括电感耦合到缓冲电感器的辅助电感器和消耗由缓冲电感器通过辅助电感器引起的功率的辅助电阻器。
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