公开(公告)号：US20180191271A1

公开(公告)日：2018-07-05

申请号：US15395971

申请日：2016-12-30

申请人： Texas Instruments Incorporated

发明人： Salvatore Giombanco ,  Saurav Bandyopadhyay ,  Salvatore Vincenzo Capici

IPC分类号： H02M7/48 ,  H02M7/217 ,  H02M7/04 ,  H02M7/523 ,  H02M1/42 ,  H02M3/07

CPC分类号： H02M7/4826 ,  H02M1/4241 ,  H02M3/07 ,  H02M3/33576 ,  H02M7/043 ,  H02M7/217 ,  H02M7/523 ,  H02M2001/0009 ,  H02M2001/0058 ,  H02M2007/4811 ,  H02M2007/4815 ,  H02M2007/4818 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1491

摘要： Embodiments includes systems, methods, and apparatuses for determining a resonant frequency of an LLC converter via a primary side of the LLC converter. In one embodiment, a circuit comprises an LLC converter and a resonant frequency determination unit, the resonant frequency determination unit configured to monitor electrical current on the primary side of the LLC converter, isolate a portion of the electrical current, determine, based on the portion of the electrical current, a crossing point, and determine, based on the crossing point, a resonant frequency of the LLC converter.

公开(公告)号：US09660527B2

公开(公告)日：2017-05-23

申请号：US14585280

申请日：2014-12-30

申请人： Solaredge Technologies, Ltd.

发明人： Tzachi Glovinski

IPC分类号： H02M3/158 ,  H02M1/34 ,  H02M7/5387 ,  H02M7/48

CPC分类号： H02M3/158 ,  H02M1/34 ,  H02M7/5387 ,  H02M2007/4811 ,  Y02B70/1441

摘要： A method for providing non-resonant zero-voltage switching in a switching power converter. The switching power converter converts power from input power to output power during multiple periodic switching cycles. The switching power converter includes a main switch and an auxiliary capacitor adapted for connecting to the main switch, and an inductor connectable to the auxiliary capacitor. When the main switch is on, a previously charged (or previously discharged) auxiliary capacitor is connected to the main switch with auxiliary switches. The main switch is switched off with zero voltage while discharging non-resonantly (charging) the auxiliary capacitor by providing a current path to the inductor. The auxiliary capacitor is disconnected from the main switch. The voltage of the auxiliary capacitor is charged and discharged alternatively during subsequent switching cycles. The voltage of the auxiliary capacitor stays substantially the same until the subsequent turn off of the main switch during the next switching cycle with substantially no energy loss in the auxiliary capacitor.

公开(公告)号：US09509254B1

公开(公告)日：2016-11-29

申请号：US14729312

申请日：2015-06-03

申请人： David W. Cripe

发明人： David W. Cripe

IPC分类号： H02M7/538 ,  H03F3/38 ,  H03F1/14 ,  H02M7/537 ,  H03F3/217 ,  H02M7/5387 ,  H03F3/45 ,  H02M7/48 ,  H02M1/00

CPC分类号： H03F1/14 ,  H02M7/537 ,  H02M7/538 ,  H02M7/5387 ,  H02M7/53871 ,  H02M2001/0054 ,  H02M2001/0058 ,  H02M2007/4811 ,  H02M2007/4815 ,  H03F1/30 ,  H03F3/217 ,  H03F3/2173 ,  H03F3/38 ,  H03F3/45 ,  H03F3/45475 ,  H03F2203/45526 ,  Y02B70/1441 ,  Y02B70/1491

摘要： A bi-directional Class D half-bridge power amplifier circuit incorporates soft switching components to reduce switching losses by commutating the voltage across the high and low switches of the half-bridge. The power amplifier may further be embodied in an AC power inverter configured to generate 60 Hz sinusoidal current from a DC power source. The AC power inverter may further incorporate an active filter circuit including a current shunt resistor and negative feedback loop to attenuate ripple current from the DC power source by supplying a compensating ripple voltage to the AC power inverter.

摘要翻译： 双向D类半桥功率放大器电路采用软开关元件，通过换向半桥的高低开关电压来降低开关损耗。 功率放大器还可以被配置为从DC电源产生60Hz的正弦电流的AC电力逆变器。 交流电源逆变器还可以包括有源滤波器电路，其包括电流分流电阻器和负反馈回路，以通过向AC电力逆变器提供补偿纹波电压来衰减来自DC电源的纹波电流。

公开(公告)号：US20120187926A1

公开(公告)日：2012-07-26

申请号：US13338330

申请日：2011-12-28

申请人： Tzachi Glovinski

发明人： Tzachi Glovinski

IPC分类号： G05F1/46

CPC分类号： H02M3/158 ,  H02M1/34 ,  H02M7/5387 ,  H02M2007/4811 ,  Y02B70/1441

摘要： A method for providing non-resonant zero-voltage switching in a switching power converter. The switching power converter converts power from input power to output power during multiple periodic switching cycles. The switching power converter includes a main switch and an auxiliary capacitor adapted for connecting to the main switch, and an inductor connectible to the auxiliary capacitor. When the main switch is on, a previously charged (or previously discharged) auxiliary capacitor is connected to the main switch with auxiliary switches. The main switch is switched off with zero voltage while discharging non-resonantly (charging) the auxiliary capacitor by providing a current path to the inductor. The auxiliary capacitor is disconnected from the main switch.

摘要翻译： 一种用于在开关功率转换器中提供非谐振零电压开关的方法。 开关功率转换器在多个周期性开关周期期间将功率从输入功率转换为输出功率。 开关电源转换器包括主开关和适于连接到主开关的辅助电容器，以及可连接到辅助电容器的电感器。 当主开关打开时，先前充电（或先前放电的）辅助电容器通过辅助开关连接到主开关。 通过向电感器提供电流路径，主开关以零电压关断，同时非谐振放电（充电）辅助电容器。 辅助电容与主开关断开。

公开(公告)号：US20120127769A1

公开(公告)日：2012-05-24

申请号：US13296561

申请日：2011-11-15

申请人： Gregory Allen Kern

发明人： Gregory Allen Kern

IPC分类号： H02M7/5387

CPC分类号： H02M7/53871 ,  H02J3/383 ,  H02M2007/4811 ,  Y02E10/563

摘要： Soft switching power converters are described. In one example, a grid tie solar power converter includes an input for receiving a direct current (DC) power input, an h-bridge coupled to the input, and an output coupled to the h-bridge. The h-bridge includes a plurality of power switches. The output includes a first output node and a second output node. The converter also includes a first output inductor coupled between the h-bridge and the first output node, a second output inductor coupled between the h-bridge and the second output node, and a soft switching circuit coupled to the first output inductor and the second output inductor. The soft switching circuit is configured to facilitate zero voltage switching of the plurality of switches of the h-bridge.

摘要翻译： 描述了软开关电源转换器。 在一个示例中，并网太阳能功率转换器包括用于接收直流（DC）功率输入的输入，耦合到输入的h桥以及耦合到h桥的输出。 h桥包括多个电源开关。 输出包括第一输出节点和第二输出节点。 转换器还包括耦合在h桥和第一输出节点之间的第一输出电感器，耦合在h桥与第二输出节点之间的第二输出电感器，以及耦合到第一输出电感器和第二输出电感器的软开关电路 输出电感。 软开关电路被配置为便于h桥的多个开关的零电压切换。

公开(公告)号：US07960950B2

公开(公告)日：2011-06-14

申请号：US12409763

申请日：2009-03-24

申请人： Tzachi Glovinsky

发明人： Tzachi Glovinsky

IPC分类号： G05F1/613 ,  G05F1/10

CPC分类号： H02M3/158 ,  H02M1/34 ,  H02M7/5387 ,  H02M2007/4811 ,  Y02B70/1441

摘要： A method for providing non-resonant zero-current switching in a switching power converter operating in a continuous current mode. The switching power converter converts power from input power to output power. The switching power converter includes a main switch connected to a main inductor, wherein an auxiliary inductor is connectible with the main inductor. The main current flows from an input to an output. The auxiliary inductor is connected with the main inductor thereby charging the auxiliary inductor so that an auxiliary current flows from the output to the input opposing the main current. Upon a total current including a sum of the main current and the auxiliary current. substantially equals or approaches zero, the switch is turned on.

摘要翻译： 一种用于在以连续电流模式工作的开关电源转换器中提供非谐振零电流开关的方法。 开关电源转换器将功率从输入功率转换为输出功率。 开关电源转换器包括连接到主电感器的主开关，其中辅助电感器可与主电感器连接。 主电流从输入流向输出。 辅助电感器与主电感器连接，从而对辅助电感器进行充电，使得辅助电流从输出流向与主电流相对的输入。 在包括主电流和辅助电流之和的总电流时。 基本上等于或接近零，开关打开。

公开(公告)号：US07272020B2

公开(公告)日：2007-09-18

申请号：US11063248

申请日：2005-02-22

申请人： Bradley M. Lehman ,  Wei Song

发明人： Bradley M. Lehman ,  Wei Song

IPC分类号： G05F3/335

CPC分类号： H02M3/33569 ,  H02M2007/4811

摘要： A current-fed DC-DC converter has a topology that improves converter performance and operates an input inductor in continuous conduction mode. The configuration and operation of the converter produces reduced requirements for circuit component ratings and leads to faster transient response time than conventional current-fed DC-DC converters. The converter can operate as an apparent current-fed full bridge converter in one stage, and an apparent current-fed half bridge converter in another stage. The input inductor is configured and operated to release stored energy to the load in conjunction with other energy storage components to provide a continuous output current that significantly reduces output voltage ripple, leading to reduced rating requirements and output components. The converter topology permits a portion of the switching stage to operate with no deadtime to further improve circuit responsiveness and efficiency.

摘要翻译： 电流馈电的DC-DC转换器具有提高转换器性能并在连续导通模式下操作输入电感器的拓扑。 转换器的配置和操作对电路元件额定值的要求降低，导致比传统的电流馈电DC-DC转换器更快的瞬态响应时间。 该转换器可以在一级作为视在电流馈电全桥转换器工作，另一级可以工作在视在电流馈电的半桥转换器中。 输入电感器被配置和操作以将存储的能量与其他能量存储组件一起释放到负载，以提供显着降低输出电压纹波的连续输出电流，从而降低额定值要求和输出组件。 转换器拓扑允许开关级的一部分在没有死区时间的情况下工作，以进一步提高电路响应性和效率。

公开(公告)号：US20040246746A1

公开(公告)日：2004-12-09

申请号：US10484091

申请日：2004-07-12

发明人： Staffan Norrga ,  Tomas Jonsson

IPC分类号： H02M003/335

CPC分类号： H02M7/487 ,  H02M7/4826 ,  H02M2007/4811

摘要： The invention relates to a method for controlling a VSC-converter provided with a resonant circuit (16). In connection with the effectuation of an intended commutation process ordered by the modulator (30), the control device (24) is made to send control signals to the current valves (2, 3) and auxiliary valve (18) that are taking part in the commutation process, for turning on or turning off thereof, at instants (t1) determined on the basis of a desired commutation instant (ttr) given by the modulator (30) and a calculation algorithm, which is based upon values of the phase current and the intermediate link voltage and knowledge about the influence the components included in the converter have on the intended commutation process, said calculation algorithm being elaborated in consideration of the condition that the desired commutation instant (t*tr) is to coincide with an equivalent transition instant (ttr) for the phase voltage, which equivalent transition instant (ttr) is estimaged with the aid of knowledge about the influence the components included in the convernter have on the transition of the phase voltage (uph(t)) during the intended commutation process.

摘要翻译： 本发明涉及一种用于控制设有谐振电路（16）的VSC转换器的方法。 关于由调制器（30）排序的预期换向过程的实现，使得控制装置（24）将控制信号发送到正在参与的当前阀（2,3）和辅助阀（18） 在根据由调制器（30）给出的期望的换向时刻（ttr）确定的时刻（t1）和基于相电流值的计算算法的计算算法进行用于导通或关断的换向处理 并且中间链路电压和关于转换器中包括的组件对预期换向过程的影响的知识，所述计算算法考虑到期望的换向时刻（t * tr）与等效转换 相位电压的瞬时（ttr），相关转换时刻（ttr）的估计是借助于关于convernter中包含的组件对trans的影响的知识 在预期的换向过程中，相电压（uph（t））的变化。

公开(公告)号：US06172882B2

公开(公告)日：2001-01-09

申请号：US09469276

申请日：1999-12-22

申请人： Katsuaki Tanaka ,  Yoshihisa Okita ,  Kazuyuki Ito

发明人： Katsuaki Tanaka ,  Yoshihisa Okita ,  Kazuyuki Ito

IPC分类号： H02M3335

CPC分类号： H02M7/5387 ,  H02M2007/4811

摘要： The present invention provide a partial resonance PWM converter capable of making the switching loss occurring at a switch approximately zero and high efficiency by controlling a switching timing. A series circuit composed of upper and lower main switches is connected in parallel with a DC power supply, and diodes are respectively connected in parallel with each of the main switches in the opposite direction of a polarity of the DC power supply. A series circuit composed of upper and lower auxiliary switches is connected in parallel with the DC power supply, and diodes are respectively connected in parallel with each of the auxiliary switches in the opposite direction of the polarity of the DC power supply. A series resonance circuit composed of a capacitor and an inductor is inserted between the juncture of the upper and lower main switches and a juncture of the upper and lower auxiliary switches. The switching timing is controlled to make the auxiliary switch turn on just before the main switch is switched, to make the main switch turn off during the diode connected in parallel with each of the main switches is in ON condition, and to make the auxiliary switch turn off during the ON condition of the diode connected in parallel with each of the auxiliary switches.

摘要翻译： 本发明提供一种部分谐振PWM转换器，其能够通过控制切换定时使开关处的开关损耗在近似为零和高效率下发生。 由上，下主开关构成的串联电路与直流电源并联连接，二极管与直流电源极性相反的方向分别与主开关并联。 由上，下辅助开关构成的串联电路与直流电源并联连接，二极管分别与直流电源极性相反的方向与各辅助开关并联。 由电容器和电感器组成的串联谐振电路插入在上下主开关的接合部和上下辅助开关的接合部之间。 控制切换定时，使辅助开关刚好在主开关切换之前打开，使主开关在与主开关并联连接的二极管处于导通状态时关闭，并使辅助开关 在与每个辅助开关并联连接的二极管的导通条件期间关闭。

公开(公告)号：US5898583A

公开(公告)日：1999-04-27

申请号：US17572

申请日：1998-02-02

申请人： Eladio Clemente Delgado ,  Mustansir Hussainy Kheraluwala

发明人： Eladio Clemente Delgado ,  Mustansir Hussainy Kheraluwala

IPC分类号： H02M7/538 ,  H02M3/24 ,  H02M7/537

CPC分类号： H02M7/538 ,  H02M2007/4811 ,  Y02B70/1441

摘要： A gate drive latching circuit for an auxiliary resonant commutation circuit for a power switching inverter includes a current monitor circuit providing a current signal to a pair of analog comparators to implement latching of one of a pair of auxiliary switching devices which are used to provide commutation current for commutating switching inverters in the circuit. Each of the pair of comparators feeds a latching circuit which responds to an active one of the comparators for latching the associated gate drive circuit for one of the pair of auxiliary commutating switches. An initial firing signal is applied to each of the commutating switches to gate each into conduction and the resulting current is monitored to determine current direction and therefore the one of the switches which is carrying current. The comparator provides a latching signal to the one of the auxiliary power switches which is actually conducting current and latches that particular power switch into an on state for the duration of current through the device. The latching circuit is so designed that the only time one of the auxiliary switching devices can be latched on is during the duration of an initial firing command signal.

摘要翻译： 用于功率开关逆变器的辅助谐振换向电路的栅极驱动闭锁电路包括电流监视器电路，其向一对模拟比较器提供电流信号，以实现用于提供换向电流的一对辅助开关器件中的一个的锁存 用于整流电路中的开关逆变器。 一对比较器中的每一个馈送锁存电路，其响应于比较器中的有效一个，用于锁存用于一对辅助换向开关中的一个的相关联的栅极驱动电路。 将初始点火信号施加到每个换向开关以使栅极分别导通，并且监视所得到的电流以确定电流方向，并因此确定正在承载电流的开关中的一个。 比较器向辅助功率开关中的一个提供锁存信号，该功率开关实际上导通电流和锁存器，使得特定功率开关在电流通过器件的持续时间内处于导通状态。 锁存电路的设计使得在初始点火命令信号的持续时间内唯一能够锁存辅助开关装置的时间之一。