公开(公告)号：US06496392B2

公开(公告)日：2002-12-17

申请号：US09835008

申请日：2001-04-13

申请人： Arthur B. Odell

发明人： Arthur B. Odell

IPC分类号： H02M7122

CPC分类号： H02M1/34 ,  H02M3/335 ,  H02M3/33569 ,  H02M2001/344

摘要： Dissipative clamping apparatuses and methods for electrical circuits. In one aspect of the invention, In one aspect of the invention, a method includes switching a power supply input on an energy transfer element, regulating a power supply output by switching the power supply input on the energy transfer element, clamping a voltage on the energy transfer element to a clamp voltage and varying the clamp voltage in response to the power supply input. In another aspect, an electrical circuit includes a dissipative clamp circuit coupled to an input of the electrical circuit. An inductive element is coupled between the dissipative clamp circuit and an output of the electrical circuit. A switch is coupled in series with the inductive element. The dissipative clamp circuit is coupled to provide a clamp voltage across the inductive element, the clamp voltage is provided by the dissipative clamp circuit responsive to conditions at the input of the electrical circuit, the dissipative clamp circuit is coupled to maintain a voltage across the switch below a switch voltage limit.

摘要翻译： 用于电路的耗散夹紧装置和方法。 在本发明的一个方面，在本发明的一个方面，一种方法包括切换能量传递元件上的电源输入，通过切换能量传递元件上的电源输入来调节电源输出，钳位电压 能量传递元件到钳位电压并响应于电源输入而改变钳位电压。 在另一方面，电路包括耦合到电路输入的耗散钳位电路。 电感元件耦合在耗散钳位电路和电路的输出之间。 开关与电感元件串联耦合。 耗散钳位电路被耦合以在电感元件上提供钳位电压，钳位电压由消耗钳位电路提供，响应于电路输入端的条件，耗散钳位电路被耦合以保持开关两端的电压 低于开关电压限制。

公开(公告)号：US06661681B2

公开(公告)日：2003-12-09

申请号：US10137288

申请日：2002-05-03

申请人： Norihito Nakamura

发明人： Norihito Nakamura

IPC分类号： H02M7122

CPC分类号： H02H7/1227 ,  H02H3/06

摘要： A power converter apparatus comprises a detection circuit, a control circuit and a time period generating circuit. The detection circuit detects whether a power device is in a short-circuit state. The control circuit sets, when the detection circuit has detected that the power device is in the short-circuit state, the power device in an inoperable state for a predetermined time period, and restores the power device to an operable state after the passing of the predetermined time period. The time period generating circuit defines the predetermined time period for setting the power device in the inoperable state, by measuring a time from the detection of the short-circuit state by the detection circuit.

摘要翻译： 电力转换装置包括检测电路，控制电路和时间周期发生电路。 检测电路检测功率器件是否处于短路状态。 当检测电路检测到电力设备处于短路状态时，控制电路将预定时间段内的电力设备处于不可操作状态，并且在通过之后将功率器件恢复到可操作状态 预定时间段。 该时间周期发生电路通过从检测电路的短路状态的检测来测量时间来定义用于将功率器件设置在不可操作状态的预定时间段。

公开(公告)号：US06532161B2

公开(公告)日：2003-03-11

申请号：US09890814

申请日：2001-11-13

申请人： Dmitri Kovalevskii ,  Michael Kishinevsky ,  David J. Christie

发明人： Dmitri Kovalevskii ,  Michael Kishinevsky ,  David J. Christie

IPC分类号： H02M7122

CPC分类号： H02M1/40 ,  H01F27/402 ,  H01F30/06 ,  H01F2019/085 ,  H01J37/3405 ,  H01J37/3444 ,  H02M7/48

摘要： There is provided by this invention an apparatus and method for generating voltage pulses to first and second magnetron devices in a plasma chamber. An isolation transformer is connected to a pulsed DC power supply having a flux sensor, such as a Hall effect sensor, in close proximity to its air gap to monitor the transformer flux. A control circuit is connected to the flux sensor to control the duty cycle of the transformer by controlling the flux of the transformer such that the maximum and minimum peak transformer fluxes are equal in magnitude and opposite in sign to prevent saturation.

公开(公告)号：US06205040B1

公开(公告)日：2001-03-20

申请号：US09553323

申请日：2000-04-20

申请人： Ralph Teichmann

发明人： Ralph Teichmann

IPC分类号： H02M7122

CPC分类号： H02M7/487 ,  G05F1/618 ,  H02M2007/4811

摘要： A three-point or multipoint converter is described. The converter has a series circuit formed of at least four main switches per converter phase, which are connected electrically in parallel between a positive and a negative DC voltage rail. An individual snubber capacitance is disposed in parallel with each individual main switch. At least two converter levels are formed between the DC voltage rails, a junction point or junction points and voltage neutral points of the converter levels are accessible. An output of the converter phase is connected to the voltage neutral points of the converter levels, via a series circuit formed of at least one resonant inductance and independently controllable bidirectional auxiliary switches. Junction points of the snubber capacitances that do not at the same time form the output of the converter phase are connected via charge control switches to the junction point or the junction points of the converter levels.

摘要翻译： 描述三点或多点转换器。 该转换器具有由至少四个主转换器构成的串联电路，每个转换器相位在正和负的直流电压轨之间并联电连接。 单独的缓冲电容与每个单独的主开关并联布置。 在直流电压轨道之间形成至少两个转换器电平，可以访问转换器电平的接点或接点和电压中性点。 转换器相的输出通过由至少一个谐振电感和独立可控的双向辅助开关形成的串联电路连接到转换器电平的电压中性点。 不同时形成转换器相位输出的缓冲电容的接点通过充电控制开关连接到转换器电平的接点或接点。

公开(公告)号：US06545886B1

公开(公告)日：2003-04-08

申请号：US09849542

申请日：2001-05-05

申请人： Anthony J. Ireland

发明人： Anthony J. Ireland

IPC分类号： H02M7122

CPC分类号： A63H19/24 ,  H02M7/125

摘要： New techniques are presented for increased power handling capability for model railroad decoders and other attached electronics when space and cooling limitations exist. Additionally, novel usage of existing electronic voltage measurements permit an improvement in Overcurrent fault detection and recovery. These techniques allow new designs with improved reliability and load current capacity.

摘要翻译： 在存在空间和冷却限制的情况下，提出了新的技术来提高模型铁路解码器和其他附加电子设备的功率处理能力。 此外，现有电子电压测量的新颖使用允许改进过流故障检测和恢复。 这些技术允许具有改进的可靠性和负载电流容量的新设计。

公开(公告)号：US06246598B1

公开(公告)日：2001-06-12

申请号：US09631365

申请日：2000-08-02

申请人： Ralph E. Tarter ,  Lawrence W. Goins

发明人： Ralph E. Tarter ,  Lawrence W. Goins

IPC分类号： H02M7122

CPC分类号： H02M1/088 ,  H03K17/107

摘要： A high-power modulation system includes drive circuitry that receives input signals from the signal source via a series of transformers. The drive circuitry amplifies the input signals and provides the resulting amplified signals to the high-power switch. A storage capacitor within the drive circuitry stores energy derived from the input signals, and the stored energy is used to power the drive circuitry. One embodiment takes advantage of inductive ringing to more rapidly turn off the high-power switch. A diode connected in series between two drive transistors rectifies the ringing signals, pulling a control signal to the high-power switch negative.

摘要翻译： 大功率调制系统包括通过一系列变压器从信号源接收输入信号的驱动电路。 驱动电路放大输入信号并将产生的放大信号提供给大功率开关。 驱动电路内的存储电容器存储从输入信号导出的能量，并且存储的能量用于为驱动电路供电。 一个实施例利用感应振铃来更快速地关闭大功率开关。 串联在两个驱动晶体管之间的二极管整流振铃信号，将控制信号拉到大功率开关为负极。

公开(公告)号：US06233164B1

公开(公告)日：2001-05-15

申请号：US09431507

申请日：1999-11-01

申请人： Kum Yoong Zee ,  Kian Meng Koh ,  Seng Huat Ng

发明人： Kum Yoong Zee ,  Kian Meng Koh ,  Seng Huat Ng

IPC分类号： H02M7122

CPC分类号： H02M3/3385 ,  H02M1/32

摘要： The protection circuit comprises a storage capacitor which is coupled with a terminal of a secondary winding which charges said storage capacitor during the on-interval of the switching transistor. During the off-interval of the switching transistor the charge of the storage capacitor is fed to the driver stage or the control capacitor for closing or keeping closed the switching transistor when one of the secondary windings has a short circuit.

摘要翻译： 保护电路包括存储电容器，其与在开关晶体管的接通间隔期间对所述存储电容器充电的次级绕组的端子耦合。 在开关晶体管的截止间隔期间，当一个次级绕组具有短路时，存储电容器的电荷被馈送到驱动级或用于闭合或保持闭合开关晶体管的控制电容器。

公开(公告)号：US06487097B2

公开(公告)日：2002-11-26

申请号：US09802723

申请日：2001-03-12

申请人： Lucian Popescu

发明人： Lucian Popescu

IPC分类号： H02M7122

CPC分类号： H02M1/40 ,  H02M3/156 ,  H02M2001/0022

摘要： A method to dynamically clamp the feedback control voltage in DC—DC converters, with the purpose to limit the duty-cycle and to protect the magnetic components against saturation, over a wide range of input voltage conditions. The clamping level is function of input voltage and allows the design optimization of the magnetic components in the way of minimizing their size and is active only during transient events, when momentary open loop condition may occur.

摘要翻译： 一种在DC-DC转换器中动态钳位反馈控制电压的方法，目的是在宽范围的输入电压条件下限制占空比并保护磁性元件免受饱和。 钳位电平是输入电压的函数，并允许以最小化其尺寸的方式设计磁性元件的优化，并且仅在短暂的事件发生时才能起作用。

公开(公告)号：US06330172B1

公开(公告)日：2001-12-11

申请号：US09505343

申请日：2000-02-16

申请人： Luca Fontanella ,  Giovanni Frattini ,  Giulio Ricotti

发明人： Luca Fontanella ,  Giovanni Frattini ,  Giulio Ricotti

IPC分类号： H02M7122

CPC分类号： H02M1/38

摘要： A switching device having a first and a second electronic switch connected in a half-bridge configuration and each having a control terminal for receiving a switching signal alternatively having a turn-on value and a turn-off value for taking the first and second electronic switches to an on state and to an off state, respectively; the switching device includes, for each switch, means for detecting the state of the switch and means for keeping the switching signal at the turn-off value for one of the electronic switches when the detected state of the other electronic switch is the on state.

摘要翻译： 一种开关装置，具有以半桥结构连接的第一和第二电子开关，每个开关装置具有用于接收开关信号的控制端子，所述控制端子交替地具有导通值和用于接收第一和第二电子开关的关断值 分别处于状态和关闭状态; 对于每个开关，当另一个电子开关的检测状态为接通状态时，开关装置包括用于检测开关状态的装置和用于将开关信号保持在电子开关中的一个的关断值的装置。

公开(公告)号：US06317341B1

公开(公告)日：2001-11-13

申请号：US09711245

申请日：2000-11-09

申请人： Simon Fraidlin ,  Anatoliy Polikarpov

发明人： Simon Fraidlin ,  Anatoliy Polikarpov

IPC分类号： H02M7122

CPC分类号： H02M1/4258 ,  H02M3/33569 ,  Y02B70/126 ,  Y02B70/1433 ,  Y02P80/112

摘要： A switching circuit, a method of processing power and a single stage power factor corrector employing the switching circuit or the method. In one embodiment, the switching circuit includes: (1) a power switch coupled to a primary winding of a transformer; and (2) an active clamp coupled to the power switch. The active clamp includes: (2a) series-coupled first and second capacitors, coupled across the power switch and the primary winding, having opposing polarities thereacross, and (2b) a clamping switch coupled to a node between the series-coupled first and second capacitors. The clamping switch opens to allow energy stored in the first capacitor to be transferred to an output of the power converter via the second capacitor. The clamping switch further closes to allow energy stored in the second capacitor to be transferred to the output.

摘要翻译： 一种开关电路，一种处理功率的方法和采用该开关电路或该方法的单级功率因数校正器。 在一个实施例中，开关电路包括：（1）耦合到变压器的初级绕组的功率开关; 和（2）耦合到电源开关的有源钳位。 有源钳位包括：（2a）串联耦合的第一和第二电容器，跨过功率开关和初级绕组耦合，具有相反的极性，以及（2b）耦合到串联耦合的第一和第二 电容器 夹紧开关打开以允许存储在第一电容器中的能量通过第二电容器传递到功率转换器的输出端。 夹紧开关进一步关闭，以将存储在第二电容器中的能量传送到输出端。