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1.发明授权Snubber circuit for a rectifier, method of operation thereof and power converter employing the same 失效用于整流器的缓冲电路，其操作方法和采用该整流器的功率转换器
公开(公告)号：US5991174A
公开(公告)日：1999-11-23
申请号：US141783
申请日：1998-08-28
IPC分类号： H02M1/34 , H02M3/158 , H03K17/0814 , H02H7/122
CPC分类号： H02M1/34 , H02M3/158 , H03K17/0814 , H02M2001/342 , Y02B70/1491
摘要： In a power converter having an input coupled to a power switch and a rectifier for conducting currents from the input to an output of the power converter, a snubber circuit for, a method of, moderating reverse recovery currents associated with the rectifier and a power converter employing the circuit or the method. In one embodiment, the circuit includes a snubber inductor and snubber capacitor coupled to the rectifier. The circuit further includes a first auxiliary switch that conducts to divert a portion of the currents away from the rectifier through the snubber inductor and snubber capacitor. The circuit still further includes a second auxiliary switch, interposed between the power switch and the first auxiliary switch, that conducts to create a path to discharge the capacitor to the output of the power converter.
摘要翻译： 在具有耦合到功率开关和整流器的输入的功率转换器中，所述整流器用于传导从所述输入到所述功率转换器的输出的电流，用于缓和与所述整流器相关联的反向恢复电流的方法的缓冲电路和功率转换器 采用电路或方法。 在一个实施例中，该电路包括耦合到整流器的缓冲电感器和缓冲电容器。 电路还包括第一辅助开关，其传导通过缓冲电感器和缓冲电容器将一部分电流偏离整流器。 电路还包括插在电源开关和第一辅助开关之间的第二辅助开关，其传导以产生将电容器放电到功率转换器的输出端的路径。
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2.发明授权Switch driver for a snubber circuit, method of operation thereof and power converter employing the same 有权用于缓冲电路的开关驱动器，其操作方法和采用该驱动器的功率转换器
公开(公告)号：US6060867A
公开(公告)日：2000-05-09
申请号：US141820
申请日：1998-08-28
IPC分类号： H02M1/34 , H02M3/158 , H03K17/0814 , G05F1/613 , H02H7/10
CPC分类号： H02M1/34 , H02M3/158 , H03K17/08142 , H02M2001/342 , Y02B70/1491
摘要： In a power converter having a power switch, a rectifier and a snubber circuit having an auxiliary switch that moderates reverse recovery currents associated with the rectifier, a driver for the auxiliary switch, a method of driving the auxiliary switch and a power converter employing the driver and method. In one embodiment, the driver includes a first driver switch, coupled between the power switch and the auxiliary switch, that allows the auxiliary switch to turn on concurrently with the power switch. The driver also includes a second driver switch, coupled between the auxiliary switch and an output of the power converter, that prevents a voltage of the auxiliary switch from rising above an output voltage of the power converter to assist the auxiliary switch in turning off.
摘要翻译： 在具有电源开关，整流器和缓冲电路的功率转换器中，具有缓和与整流器相关联的反向恢复电流的辅助开关，用于辅助开关的驱动器，驱动辅助开关的方法和使用该驱动器的功率转换器 和方法。 在一个实施例中，驱动器包括耦合在电源开关和辅助开关之间的第一驱动器开关，其允许辅助开关与电源开关同时开启。 驱动器还包括耦合在辅助开关和功率转换器的输出端之间的第二驱动器开关，其防止辅助开关的电压升高到功率转换器的输出电压以上以帮助辅助开关断开。
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公开(公告)号：US5550458A
公开(公告)日：1996-08-27
申请号：US251163
申请日：1994-05-31
CPC分类号： H02M1/34 , H02M1/4225 , H02M3/155 , H02M2001/348 , Y02B70/126 , Y02P80/112
摘要： A boost converter includes a snubber with finite but limited losses to minimize active power switching losses and minimize turn-off losses of the boost diode without generating any additional circulating energy losses. An inductor is connected so as to slow turn off of the boost diode and minimize reverse recovery losses. This inductor additionally minimizes the turn-on switching losses of the active power switch of the converter by providing for zero-current turn-on. A series connection of a finite resistor and a second diode is connected in shunt with the inductor/boost diode connection to prevent excessive voltage ringing across the active power switch by clamping its voltage during turn-off. A third diode is connected to the junction of the inductor and boost diode to prevent the voltage across the boost diode from ringing during the on interval of the active power switch.
摘要翻译： 升压转换器包括具有有限但有限损耗的缓冲器，以最小化有功功率开关损耗并最小化升压二极管的关断损耗，而不产生任何额外的循环能量损失。 连接电感器，以缓慢关闭升压二极管，并最大程度地减少反向恢复损耗。 该电感器还通过提供零电流开启来最小化转换器的有功功率开关的导通开关损耗。 有限电阻和第二二极管的串联连接与电感/升压二极管连接分流，以防止在关断时钳位有功功率开关的过电压振荡。 第三个二极管连接到电感和升压二极管的结，以防止升压二极管两端的电压在有功功率开关的接通间隔期间振铃。
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4.发明授权Current mode controller for continuous conduction mode power factor correction circuit and method of operation thereof 失效连续导通模式功率因数校正电路的电流模式控制器及其操作方法
公开(公告)号：US5912549A
公开(公告)日：1999-06-15
申请号：US905105
申请日：1997-08-01
CPC分类号： H02M1/4225 , Y02B70/126 , Y02P80/112
摘要： For use with a power factor correction circuit, a current mode controller, a method of operating current mode control to achieve power factor correction thereof and a power supply incorporating the controller or the method. In one embodiment, the controller includes: (1) a modulator, coupled to a switch in the power factor correction circuit, that senses an electrical characteristic and a current passing through the power factor correction circuit and provides, in response thereto, a control signal to the switch and (2) a compensation circuit, coupled to an input of the power factor correction circuit, that provides a compensation signal to the modulator that is a function of a rectified line voltage provided to the input of the power factor correction circuit. The compensation signal causes the modulator to modify the control signal to reduce a total harmonic distortion (THD) of the power factor correction circuit.
摘要翻译： 用于功率因数校正电路，电流模式控制器，操作电流模式控制以实现其功率因数校正的方法和结合该控制器或方法的电源。 在一个实施例中，控制器包括：（1）耦合到功率因数校正电路中的开关的调制器，其感测通过功率因数校正电路的电特性和电流，并响应于此提供控制信号 和（2）补偿电路，其耦合到功率因数校正电路的输入，该补偿电路为调制器提供补偿信号，该补偿信号是提供给功率因数校正电路的输入的整流线电压的函数。 补偿信号使调制器修改控制信号，以降低功率因数校正电路的总谐波失真（THD）。
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公开(公告)号：US06539913B1
公开(公告)日：2003-04-01
申请号：US10047369
申请日：2002-01-14
申请人： William P. Gardiner
发明人： William P. Gardiner
IPC分类号： F02B5304
CPC分类号： F02B53/04 , F02B53/00 , F02B2075/027 , Y02T10/17
摘要： The present invention provides an internal combustion engine and a method of manufacturing the internal combustion engine. The internal combustion engine comprises a housing, a first rotor, first and second impellers and a compression cam. In a preferred embodiment, the housing has a first inner surface defining a first cavity therein, the first rotor is journalled for rotation within the first cavity and is situated to define compression and exhaust cavities on opposing sides therein, first and second impellers located in, and slidable with respect to, first and second opposing radial apertures in the first rotor, and the compression cam is fixedly coupled to the housing. The compression cam has a working surface portion that corresponds to a profile of the inner surface to force the first and second impellers to contact the inner surface and a dead surface portion that departs from the profile to allow the first and second impellers to withdraw from the inner surface.
摘要翻译： 本发明提供一种内燃机及其制造方法。 内燃机包括壳体，第一转子，第一和第二叶轮和压缩凸轮。 在优选实施例中，壳体具有在其中限定第一空腔的第一内表面，第一转子被轴颈安装以在第一空腔内旋转并且被定位成在其中的相对侧上限定压缩和排气腔，第一和第二叶轮位于， 并且可相对于第一转子中的第一和第二相对的径向孔滑动，并且压缩凸轮固定地联接到壳体。 压缩凸轮具有对应于内表面的轮廓的工作表面部分，以迫使第一和第二叶轮接触内表面，以及与表面脱离的死表面部分，以允许第一和第二叶轮从 内表面。
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公开(公告)号：US4393829A
公开(公告)日：1983-07-19
申请号：US187319
申请日：1980-09-15
申请人： William P. Gardiner
发明人： William P. Gardiner
CPC分类号： F01C1/36 , F02B53/02 , F02B2075/027 , Y02T10/17
摘要： A rotary engine has separate combustion chambers and expansion chambers. A two-step combustion cycle provides for a burning step in the combustion chambers, and a separate combustion step in the expansion chambers. During operation, the rotary engine compresses air for use in a fuel injection supply.
摘要翻译： 旋转发动机具有分离的燃烧室和膨胀室。 两步燃烧循环提供了燃烧室中的燃烧步骤，以及在膨胀室中的单独的燃烧步骤。 在操作期间，旋转发动机压缩用于燃料喷射供应的空气。
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公开(公告)号：US4476015A
公开(公告)日：1984-10-09
申请号：US438579
申请日：1982-11-02
CPC分类号： B01D63/12 , B01D61/022 , B01D61/08 , B01D61/10 , B01J47/022 , B01D2313/10 , B01D2313/105 , B01D2313/12 , B01D2313/125 , B01D2317/022 , B01D2317/027 , B01D2317/04 , B01D2317/06
摘要： The fluid separation device contains a plurality of fluid separation elements, each element having fluid inlet, a treatable fluid chamber, a product fluid chamber, a product fluid outlet connected to the product fluid chamber, and a concentrated fluid outlet connected to the treatable fluid chamber. The elements are divided into at least first and second stages, each of which contains a plurality of elements. A pressure vessel surrounds the elements to maintain them at an elevated pressure. A manifold is attached to the outlet end of each of the elements. The manifold has a first channel formed therein for connecting the concentrated fluid outlet of each of the elements of the first stage with the fluid inlet of each of the elements of the second stage.
摘要翻译： 流体分离装置包含多个流体分离元件，每个元件具有流体入口，可处理流体室，产品流体室，连接到产品流体室的产品流体出口以及连接到可处理流体室的浓缩流体出口 。 元件被分成至少第一和第二阶段，每个阶段都包含多个元素。 压力容器围绕元件以将它们保持在升高的压力。 歧管连接到每个元件的出口端。 歧管具有形成在其中的第一通道，用于将第一级的每个元件的浓缩流体出口与第二级的每个元件的流体入口连接。
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公开(公告)号：US4084793A
公开(公告)日：1978-04-18
申请号：US688015
申请日：1976-05-19
申请人： William P. Gardiner
发明人： William P. Gardiner
CPC分类号： B66D1/7426
摘要： This invention relates to a winch and clutch assembly having a spool about which a line is to be wound and unwound. An electric motor is mounted within the spool and has a housing and drive shaft operable in the forward and reverse directions. A concentric ring is mounted to and rotates with the spool and a driving gear surrounds the concentric ring, the two having concentric adjacent surfaces. A gear train operatively connects said motor shaft to the concentric driving gear, and a clutch assembly is operatively located between the concentric driving gear and the driven concentric ring, which is selectively engaged and disengaged in response to the direction of rotation of the concentric driving gear so as to produce rotation of said spool in response to operation of said motor in a forward direction when said clutch assembly is engaged.
摘要翻译： 本发明涉及一种具有线轴的绞盘和离合器组件，线绕其缠绕并展开。 电动机安装在线轴内，并具有可沿正向和反向工作的壳体和驱动轴。 同心环安装到卷轴上并与卷轴一起旋转，驱动齿轮围绕同心环，两个具有同心的相邻表面。 齿轮系将所述电动机轴可操作地连接到同心驱动齿轮，并且离合器组件可操作地位于同心驱动齿轮和从动同心环之间，该同心环响应于同心驱动齿轮的旋转方向选择性地接合和分离 以便当所述离合器组件接合时响应于所述马达在向前方向上的操作而产生所述线轴的旋转。
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