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10 条记录 (耗时 0.017 秒)

    Voltage clamps for energy snubbing
    2.
    发明授权
    Voltage clamps for energy snubbing 有权
    用于能量缓冲的电压钳

    公开(公告)号：US07859870B1

    公开(公告)日：2010-12-28

    申请号：US12181420

    申请日：2008-07-29

    申请人： Michael J. Schutten ,  Robert L. Steigerwald

    发明人： Michael J. Schutten ,  Robert L. Steigerwald

    IPC分类号： H02M7/122 ,  H02M7/5387

    CPC分类号： H02M3/337 ,  H02M2001/0058 ,  H02M2001/346 ,  Y02B70/1433 ,  Y02B70/1491

    摘要： A power converter generates direct voltage and includes a phase-shifted PWM bridge with first and second controllable switches connected as a half-bridge with a first tap, for generating AC at the first tap. An output transformer includes a primary winding coupled to the first tap. A full-wave rectifier is connected to a secondary winding of the output transformer. A filter is coupled to the full-wave rectifier for producing filtered output direct voltage. Resonances create surges which may undesirably result in energy loss. A second transformer includes a primary winding coupled to receive the resonant surges and a secondary winding at which transformed surges appear. A second rectifier is coupled to the secondary winding of the second transformer, for rectifying the surges. The energy of the surges is returned or coupled to the source or load. In one embodiment, the full-wave rectifier is a bridge rectifier.

    摘要翻译： 功率转换器产生直流电压并且包括相移PWM桥，其中第一和第二可控开关作为具有第一抽头的半桥连接，用于在第一次抽头产生AC。 输出变压器包括耦合到第一抽头的初级绕组。 全波整流器连接到输出变压器的次级绕组。 滤波器耦合到全波整流器以产生滤波的输出直流电压。 共振产生可能不利地导致能量损失的浪涌。 第二变压器包括耦合以接收谐振浪涌的初级绕组和出现转换的浪涌的次级绕组。 第二整流器耦合到第二变压器的次级绕组，用于整流浪涌。 浪涌的能量返回或耦合到源或负载。 在一个实施例中，全波整流器是桥式整流器。

    Resonant converter with wide load range
    3.
    发明授权
    Resonant converter with wide load range 失效
    具有宽负载范围的谐振变换器

    公开(公告)号：US5546294A

    公开(公告)日：1996-08-13

    申请号：US506312

    申请日：1995-07-24

    申请人： Michael J. Schutten ,  Vlatko Vlatkovic ,  Robert L. Steigerwald

    发明人： Michael J. Schutten ,  Vlatko Vlatkovic ,  Robert L. Steigerwald

    IPC分类号： H02M1/44 ,  H02M3/337 ,  H02M7/5387 ,  H02M3/335

    CPC分类号： H02M1/44 ,  H02M3/3372 ,  H02M7/5387 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02P80/112

    摘要： Low-power auxiliary circuitry is added to a resonant converter for providing high efficiency operation, low EMI, and tight output voltage control over a wide load range. There is an auxiliary circuit corresponding to each half-bridge connection of main switching devices, each auxiliary circuit including a half-bridge connection of auxiliary switching devices with the junction therebetween coupled to the junction between the main switching devices of the corresponding half-bridge. Under heavy load conditions, sufficient energy is stored in the main resonant inductor to commutate the junctions joining the main switching devices in the resonant converter, resulting in zero-voltage switching for the main switching devices. Under light load conditions, a phase shift is introduced between the corresponding main and auxiliary switching devices, and the auxiliary resonant inductor currents are increased to a level sufficient for the sum of the main resonant inductor current and the corresponding auxiliary resonant inductor current to provide zero-voltage switching for all the bridge switching devices.

    摘要翻译： 低功率辅助电路被添加到谐振转换器，用于在宽负载范围内提供高效率操作，低EMI和严格的输出电压控制。 存在与主开关装置的每个半桥连接相对应的辅助电路，每个辅助电路包括辅助开关装置的半桥连接，其中连接到其相应半桥的主开关装置之间的连接处。 在重负载条件下，主谐振电感器中存储足够的能量，以便将连接主谐振转换器中的主开关器件的结换向，从而导致主开关器件的零电压切换。 在轻负载条件下，在相应的主辅助开关器件之间引入相移，并且辅助谐振电感器电流增加到足以使主谐振电感器电流和相应的辅助谐振电感器电流之和足够提供零 - 所有桥接开关器件的电压开关。

    Phase-shifted bridge with auxiliary circuit to maintain zero-voltage-switching
    4.
    发明授权
    Phase-shifted bridge with auxiliary circuit to maintain zero-voltage-switching 有权
    带辅助电路的相移桥保持零电压切换

    公开(公告)号：US07869237B1

    公开(公告)日：2011-01-11

    申请号：US11965327

    申请日：2007-12-27

    申请人： Michael J. Schutten ,  Robert Louis Steigerwald

    发明人： Michael J. Schutten ,  Robert Louis Steigerwald

    IPC分类号： H02M7/5387

    CPC分类号： H02M3/33569 ,  H02M3/33507

    摘要： A phase-shifted PWM dc-to-dc converter includes a pair of switched half-bridges defining taps. The primary of an output transformer is coupled across the taps to receive AC, and produces transformed AC which is rectified and filtered to produce the output dc. Zero-voltage-switching (ZVS) is maintained over the full range from zero load current to maximum load current by the use of an auxiliary circuit including an “inverting” second transformer having primary and secondary windings serially coupled with capacitors. The primary-capacitor serial circuit is connected between a first half-bridge tap and reference potential, and the secondary-capacitor serial circuit is connected by an inductance between second half-bridge tap and a reference potential.

    摘要翻译： 一个相移PWM直流 - 直流转换器包括一对定义抽头的开关半桥。 输出变压器的主要是通过抽头耦合以接收AC，并产生变换后的AC，其被整流和滤波以产生输出dc。 通过使用包括与电容器串联耦合的初级和次级绕组的“反相”第二变压器的辅助电路，将零电压开关（ZVS）保持在从零负载电流到最大负载电流的全范围内。 一次电容串联电路连接在第一半桥抽头和参考电位之间，二次电容串联电路通过第二半桥抽头和参考电位之间的电感连接。

    Fuzzy logic power supply controller
    5.
    发明授权
    Fuzzy logic power supply controller 失效
    模糊逻辑电源控制器

    公开(公告)号：US5534766A

    公开(公告)日：1996-07-09

    申请号：US221608

    申请日：1994-04-01

    申请人： Piero P. Bonissone ,  Michael J. Schutten ,  Kenneth H.-C. Chiang

    发明人： Piero P. Bonissone ,  Michael J. Schutten ,  Kenneth H.-C. Chiang

    IPC分类号： G05B13/02 ,  G05F1/10 ,  H02M3/337

    CPC分类号： G05F1/10 ,  G05B13/0275 ,  H02M3/3376 ,  Y02B70/1433

    摘要： The present invention discloses a method and system for controlling a power supply by delivering stable output voltage independent of load. The control system includes a sensor for sensing a state variable, a fuzzy logic controller for generating a control action, and an actuator for regulating the power supply in accordance with the control action. The fuzzy logic controller generates a fuzzy logic knowledge base using low-level fuzzy logic controllers and a mode selector in one embodiment and a fuzzy logic proportional integral controller in another embodiment. The generated fuzzy logic knowledge base is compiled in a look-up table and is used to quickly and efficiently control a power supply device such as a resonant converter.

    摘要翻译： 本发明公开了一种通过输送稳定的输出电压来独立于负载来控制电源的方法和系统。 控制系统包括用于感测状态变量的传感器，用于产生控制动作的模糊逻辑控制器和用于根据控制动作来调节电源的致动器。 模糊逻辑控制器在一个实施例中使用低级模糊逻辑控制器和模式选择器以及另一实施例中的模糊逻辑比例积分控制器来生成模糊逻辑知识库。 生成的模糊逻辑知识库被编译在查找表中，用于快速有效地控制诸如谐振转换器的电源设备。

    Power distribution system for generating regulated DC output voltages using a dual active bridge converter driven from an unregulated DC source
    9.
    发明授权
    Power distribution system for generating regulated DC output voltages using a dual active bridge converter driven from an unregulated DC source 失效
    配电系统，用于使用从未调节的直流电源驱动的双有源电桥转换器产生稳压的直流输出电压

    公开(公告)号：US5500791A

    公开(公告)日：1996-03-19

    申请号：US326905

    申请日：1994-10-21

    申请人： Mustansir H. Kheraluwala ,  Michael J. Schutten

    发明人： Mustansir H. Kheraluwala ,  Michael J. Schutten

    IPC分类号： H02M3/335 ,  H02M3/24

    CPC分类号： H02M3/33576 ,  Y02B70/1433

    摘要： A power distribution system including a dual active bridge converter (DABC) distributes a regulated high-frequency, edge-resonant, square wave ac output voltage from an unregulated dc voltage source. The DABC-includes a primary-side half-bridge connection of switching devices and a secondary-side half-bridge connection of switching devices which are coupled by an intermediate high-frequency transformer. An ac distribution bus is connected to the regulated secondary side of the transformer. The primary-side and secondary-side connections of switching devices are phase-shifted in a manner to provide a regulated high-frequency square-wave voltage on the ac distribution bus, which is distributed via a low-impedance distribution bus to a plurality of simple point-of-load converters. Alternatively, a plurality of DABC's is configured in a high-frequency ac power distribution system such that a primary-side half-bridge of switching devices converts an unregulated dc voltage source to an unregulated high-frequency, square wave ac voltage which is distributed to a plurality of point-of-load converters. Each point-of-load converter has a high-frequency transformer and secondary-side switching devices, such that each point-of-load converter forms a DABC pair with the primary-side half-bridge.

    摘要翻译： 包括双有源电桥转换器（DABC）的配电系统从未调节的直流电压源分配调节的高频，边缘谐振，方波交流输出电压。 DABC包括开关器件的初级侧半桥连接和通过中间高频变压器耦合的开关器件的次级侧半桥连接。 交流配电总线连接到变压器的调节二次侧。 开关器件的初级侧和次级侧连接是相互移位的，以便在交流配电总线上提供调节的高频方波电压，该电压分配总线通过低阻分布母线分配到多个 简单的负载点转换器。 或者，多个DABC被配置在高频交流配电系统中，使得开关装置的初级侧半桥将未调节的直流电压源转换为未调节的高频，方波交流电压，分配给 多个点负载转换器。 每个负载点转换器具有高频变压器和次级侧开关装置，使得每个负载点转换器与初级侧半桥形成DABC对。

    Thyristor having widened region of temperature sensitivity with respect to breakover voltage
    10.
    发明授权
    Thyristor having widened region of temperature sensitivity with respect to breakover voltage 失效
    晶闸管相对于转折电压具有加宽的温度敏感区域

    公开(公告)号：US4323793A

    公开(公告)日：1982-04-06

    申请号：US94074

    申请日：1979-11-14

    申请人： Herman P. Schutten ,  Stanley V. Jaskolski ,  Gordon B. Spellman ,  Robert W. Lade ,  Michael J. Schutten

    发明人： Herman P. Schutten ,  Stanley V. Jaskolski ,  Gordon B. Spellman ,  Robert W. Lade ,  Michael J. Schutten

    IPC分类号： H03K17/72

    CPC分类号： H03K17/72

    摘要： An external resistance is presented between the gate and cathode of a thermally sensitive thyristor which varies in accordance with a changing voltage applied across the thyristor. The changing voltage sweeps the varying external resistance through its operating range which in turn expands the region of temperature sensitivity with respect to breakover voltage by sweeping the shifting curves of switching temperature vs. gate to cathode resistance for the thyristor. In preferred form, a field effect transistor (FET) (10) is connected between the gate (8) and cathode (4) of the thermally sensitive thyristor (6) and is biased by the same voltage supply applied across the thyristor. The FET presents an external gate to cathode resistance which varies in accordance with the changing bias level on the FET, which is the same changing bias applied across the thyristor. The range of variance of this added external resistance must be between 10,000 ohms and 1 megohm. The breakover voltage of the thyristor can be made to vary slowly with respect to temperature, rather than exhibiting sharp drop in a narrow critical temperature region.

    摘要翻译： 在热敏晶闸管的栅极和阴极之间呈现外部电阻，其根据施加在晶闸管上的变化的电压而变化。 变化的电压通过其工作范围扫描变化的外部电阻，通过扫描晶闸管的开关温度与栅极至阴极电阻的移位曲线，从而扩展相对于分解电压的温度灵敏度区域。 在优选形式中，场效应晶体管（FET）（10）连接在热敏晶闸管（6）的栅极（8）和阴极（4）之间，并被施加在晶闸管两端的相同电源施加偏压。 FET呈现外部栅极至阴极电阻，其根据FET上改变的偏置电平而变化，这是跨晶闸管施加的相同的变化偏置。 该外加电阻的方差范围必须在10,000欧姆和1兆欧之间。 可以使晶闸管的转折电压相对于温度变化缓慢，而不是在窄的临界温度区域显示出急剧的下降。