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公开(公告)号：US4489267A
公开(公告)日：1984-12-18
申请号：US452834
申请日：1982-12-29
申请人： David A. Saar , Pradeep M. Bhagwat
发明人： David A. Saar , Pradeep M. Bhagwat
CPC分类号： H02P27/08 , H02P23/0077
摘要： A waveform synthesizer for generating single or poly-phase waveforms of selected wave shape and frequency for driving AC machinery including, for example, single or poly-phase induction, synchronous or other type motors or the like, includes a plurality of controllable power-switching device pairs for selectively switching power from an oppositely poled DC source to the corresponding power utilizing circuits of the driven device. The switching device pairs are controlled to provide switched pulses of selected widths, spacings, and repetition rates to generate the desired current waveform. The power-switching device pairs are selectively switched by a control circuit that includes a microprocessor-controlled memory that is divided into P addressable pages with each page including S sequentially accessible memory locations containing the switching device pairs control information necessary to synthesize the desired waveform. The microprocessor is adapted to select one of the P available pages in response to prestored instructions, user input information, or condition-responsive transducer or similar information and, after selecting the desired page P, to control a presettable address counter to sequentially access the S memory locations of the selected page P at a selected access rate and to gate the so-accessed switching information to the power-switching device pairs to thereby synthesize the desired waveform.
摘要翻译： 用于产生用于驱动包括例如单相或多相感应，同步或其它类型的电动机等的交流电机械的选定波形和频率的单相或多相波形的波形合成器包括多个可控电力切换 器件对，用于选择性地将来自相对极化的DC源的功率切换到利用所驱动器件的电路的相应功率。 控制开关器件对以提供所选择的宽度，间隔和重复率的开关脉冲以产生期望的电流波形。 功率开关器件对由包括微处理器控制的存储器的控制电路选择性地切换，该存储器被分成P个可寻址页面，每个页面包括S个可顺序存取的存储位置，其中包含合成所需波形所需的开关器件对控制信息。 微处理器适于响应于预先存储的指令，用户输入信息或条件响应传感器或类似信息来选择P个可用页面中的一个，并且在选择所需页面P之后，控制可预置地址计数器以顺序访问S 选择的页面P的存储器位置以选定的访问速率，并将所访问的切换信息选通到电源开关器件对，从而合成期望的波形。
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公开(公告)号：US4405977A
公开(公告)日：1983-09-20
申请号：US296296
申请日：1981-08-26
CPC分类号： H02M7/5236
摘要： The commutation circuit for commutating a conducting thyristor includes an inductance, a capacitance and a commutation thyristor all connected in series with the conducting thyristor and the dc source, the commutation thyristor initiates the commutation when triggered. The circuit further includes a first diode connected in reverse polarity across the commutation thyristor and a second diode connected in reverse polarity across the commutation thyristor-capacitance series circuit. The voltage across the capacitance is zero when each commutation cycle is initiated, and also when each commutation cycle ends.
摘要翻译： 用于整流导通晶闸管的换向电路包括全部与导通晶闸管和直流源串联的电感，电容和换向晶闸管，当触发晶体管时，换向晶闸管启动换向。 电路还包括在整流晶闸管上以相反极性连接的第一二极管和在整流晶闸管 - 电容串联电路上以相反极性连接的第二二极管。 当每个换向循环开始时，电容两端的电压为零，当每个换向循环结束时也是这样。
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公开(公告)号：US4376296A
公开(公告)日：1983-03-08
申请号：US239383
申请日：1981-03-02
CPC分类号： H02M7/521
摘要： The inverter may be single phase with one inverter leg or N-phase with N inverter legs for connection across a DC source. Each leg includes a pair of series connected thyristors with a terminal between the thyristors for connection to a load. In addition, each thyristor has a diode connected in reverse polarity across it. A commutation circuit which includes an inductor in series with the inverter legs and a capacitor in parallel with the inductor and the inverter legs, provides a commutation pulse to turn off the thyristors in each leg. A further isolating inductor is connected at the DC power input to the inverter, and a reverse polarity feedback diode may be connected across it.
摘要翻译： 逆变器可以是单相，具有一个逆变器支路或具有N个逆变器支路的N相，用于跨直流源连接。 每个支腿包括一对串联连接的晶闸管，在晶闸管之间具有用于连接到负载的端子。 此外，每个晶闸管的二极管都以相反极性连接。 包括与逆变器支脚串联的电感器和与电感器和逆变器支脚并联的电容器的换向电路提供换向脉冲以关闭每个支路中的晶闸管。 另外一个隔离电感连接在逆变器的直流电源输入端，一个反极性反馈二极管可以连接在其上。
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公开(公告)号：US5043650A
公开(公告)日：1991-08-27
申请号：US161017
申请日：1988-02-26
摘要： An isolated battery charger suitable for charging lead-acid batteries includes a high-frequency power conditioner that rectifies source current to a DC value and chops the current at a comparatively high frequency, e.g., 25 KHz, using a pair of MOSFET switches (138 and 140) to provide power pulses to the primary of a step-down transformer (T.sub.1). The output of the step-down transformer (T.sub.1) is presented to an enhancement mode MOSFET (206) in series circuit with the battery (B) to be charged with the gate bias of the MOSFET controlled in response to the sensed voltage of the battery to provide current to the battery as a function of its charge. Control circuitry is provided to limit charging to a small `trickle` level in the event the battery (B) is fully discharged to increase its charge level prior to initiating the full charge current. The provision of a voltage converter (100) operating at a relatively high frequency allows use of a lightweight and compact transformer (T.sub.1) that nonetheless provides a high current for charging.
摘要翻译： 适用于铅酸电池充电的隔离式电池充电器包括一个高频功率调节器，可将源极电流整流为直流值，并使用一对MOSFET开关（138和 140）以向降压变压器（T1）的初级端提供功率脉冲。 降压变压器（T1）的输出被呈现给与电池（B）串联电路的增强型MOSFET（206），以响应于感测到的电池电压来控制MOSFET的栅极偏置 作为其电荷的函数向电池提供电流。 提供控制电路以在电池（B）完全放电以在启动完全充电电流之前增加其充电电平的情况下将充电限制在小的“涓流”电平。 提供以较高频率工作的电压转换器（100）允许使用轻量级和小型变压器（T1），其仍然提供高电流用于充电。
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公开(公告)号：US4835409A
公开(公告)日：1989-05-30
申请号：US160912
申请日：1988-02-26
CPC分类号： A47L9/2894 , A47L9/2805 , A47L9/2831 , A47L9/2842 , A47L9/2878 , A47L9/2889 , H02J7/008 , H02J7/022 , Y10S15/01 , Y10T307/50 , Y10T307/615
摘要： A corded/cordless dual-mode power-operated device, such as a household vacuum cleaner, can be operated in corded mode from a conventional power source and in a cordless mode using energy provided from an internal rechargable battery and which includes an internal battery charger for recharging the battery when the device is in its corded mode. The internal charger includes a voltage converter that converts input source current to a relatively high DC current that is chopped at a comparatively high frequency, e.g., 25 KHz, by switching devices. The high-frequency, high voltage current is presented to a step-down transformer with the stepped-down output rectified to provide a low-voltage DC suitable for recharging the internal battery when the device is in its corded mode. The voltage converter advantageously provides for the high efficiency conversion of the input energy to meet the charging current demands of the internal battery in a physically compact device.
摘要翻译： 有线/无绳双模式动力操作装置，例如家用真空吸尘器，可以使用来自内部可再充电电池的能量提供的来自常规电源和无绳模式的有线模式操作，并且包括内部电池充电器 当设备处于有线模式时，为电池充电。 内部充电器包括电压转换器，其通过开关器件将输入源电流转换成相对较高的频率，例如25KHz的斩波的直流电流。 将高频，高压电流提供给降压变压器，降压输出整流，以提供适合于在器件处于其有线模式时为内部电池充电的低电压直流电。 电压转换器有利地提供输入能量的高效率转换，以满足物理紧凑装置内部电池的充电电流需求。
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公开(公告)号：US5013993A
公开(公告)日：1991-05-07
申请号：US237962
申请日：1988-08-29
IPC分类号： H02J7/00
CPC分类号： H02J7/0091
摘要： A battery charger 10 includes a capacitor 20 which establishes a level of current sufficient to fast charge in one-hour a battery 18 having from one to twenty cells. An SCR 16 is controlled by a timer 42 to initially delay the supply of current while determining whether the battery 18 is hot or cool. If battery 18 is cool, charger 10 proceeds to fast charge the battery. After battery 18 is fully charged, the battery heats to a temperature where a NTC thermistor 58 responds to trigger a second timer 52 which controls SCR 16 to stop the fast charging operation. Charger 10 is then controlled to prevent the charger from thereafter re-entering a fast charge mode.If battery 18 is initially hot, charger 10 is controlled to further delay the initiation of a fast charge operation until the battery cools to or below the charge-start temperature.A second NTC thermistor 90 is provided to compensate for the potential effect on the operation of thermistor 58 in response to temperature levels emanating from any environment other than from battery 18.
摘要翻译： 电池充电器10包括电容器20，电容器20建立足够电流的电流，该电流足以在一个小时内快速充电，电池18具有一至二十个电池。 定时器42控制SCR16，以便在确定电池18是热还是冷却的同时最初延迟电流供应。 如果电池18是冷却的，充电器10继续对电池进行快速充电。 在电池18充满电后，电池加热到NTC热敏电阻58响应的温度，触发控制SCR 16停止快速充电操作的第二定时器52。 然后控制充电器10以防止充电器此后重新进入快速充电模式。 如果电池18最初是热的，则控制充电器10进一步延迟快速充电操作的启动，直到电池冷却到或低于充电开始温度。 第二NTC热敏电阻90被提供以补偿响应于从电池18以外的任何环境发出的温度水平对热敏电阻58的操作的潜在影响。
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公开(公告)号：US4905300A
公开(公告)日：1990-02-27
申请号：US52760
申请日：1987-05-21
IPC分类号： H02P25/14
CPC分类号： H02P25/145 , Y10T307/696 , Y10T307/729
摘要： A pulsating D.C. voltage is developed by a rectifier 86 and is filtered by a capacitor 100 to facilitate application of a relatively smooth, enhanced D.C. voltage to a motor 106.The charged voltage of capacitor 100 is applied across a series circuit which includes a rheostat 118, a resistor 126 and motor 106. When the CEMF of motor 106 drops as a result of a decrease in motor speed, a disc 122 is biased through the voltage appearing across rheostat 118 and resistor 126 to cause an SCR 116 to fire. When SCR 116 fires, the voltage of capacitor 100 supplies a boost of power to motor 106 to overcome the decrease in motor speed.A circuit 212 prevents an overspeed of motor 106 from occurring while braking circuits 264, 266 and 268 provide for a dynamic braking effect when the motor is a universal motor.
摘要翻译： 脉冲直流电压由整流器86开发，并被电容器100滤波，以便于向电动机106施加相对平滑的增强的直流电压。电容器100的充电电压跨越包括变阻器118的串联电路 ，电阻器126和电动机106.当电动机106的CEMF由于电动机速度的降低而下降时，盘122被偏压通过变阻器118和电阻器126两端出现的电压而引起SCR 116的燃烧。 当SCR 116发生触发时，电容器100的电压将电力提升给电动机106以克服电动机速度的降低。 当电动机是通用电动机时，电路212防止电动机106超速发生，同时制动电路264,266和268提供动态制动效果。
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8.发明授权Pulse plating rectifiers and methods, systems and computer program products for controlling pulse plating rectifiers in master/slave mode 失效用于控制主/从模式下的脉冲电镀整流器的脉冲电镀整流器和方法，系统和计算机程序产品公开(公告)号：US06516233B1
公开(公告)日：2003-02-04
申请号：US09595270
申请日：2000-06-15
申请人： Pradeep M. Bhagwat , Tom Goodman , Vinod Bapat
发明人： Pradeep M. Bhagwat , Tom Goodman , Vinod Bapat
IPC分类号： G05B1918
CPC分类号： C25D21/12
摘要： Methods, systems and computer program products for controlling plating pulse rectifiers are provided by identifying one of the plurality of plating pulse rectifiers as a master plating pulse rectifier and identifying at least one of the plurality of plating pulse rectifiers, other than the master plating pulse rectifier, as a slave plating pulse rectifier. A recipe comprising a pulse pattern is downloaded to the master plating pulse rectifier and the slave plating pulse rectifier. A synchronization signal is transmitted from the master plating pulse rectifier upon initiating the pulse pattern of the recipe to the at least one slave plating pulse rectifier so as to cause the slave plating pulse rectifier to initiate the pulse pattern of the downloaded recipe. Plating pulse rectifiers suitable for use as master/slave plating pulse rectifiers and systems incorporating such plating pulse rectifiers are also provided.
摘要翻译： 用于控制电镀脉冲整流器的方法，系统和计算机程序产品通过将多个电镀脉冲整流器中的一个识别为主电镀脉冲整流器来提供，并且识别除了主电镀脉冲整流器之外的多个电镀脉冲整流器中的至少一个 ，作为从电镀脉冲整流器。 包括脉冲图案的配方下载到主电镀脉冲整流器和从电镀脉冲整流器。 在将配方的脉冲图案发起到至少一个从属电镀脉冲整流器时，从主电镀脉冲整流器发送同步信号，以使从电镀脉冲整流器启动下载配方的脉冲模式。 还提供了适合用作主/从电镀脉冲整流器的电镀脉冲整流器和包含这种电镀脉冲整流器的系统。
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公开(公告)号：US5636114A
公开(公告)日：1997-06-03
申请号：US565553
申请日：1995-11-30
CPC分类号： H02M1/44 , H02M1/34 , H02M3/155 , H02M3/335 , H03K17/08142 , H02M2001/346 , H03K2217/0036 , Y02B70/1491
摘要： A switching power converter employing a novel lossless zero-voltage-switching passive snubber network having a power range of up to 5 KW is presented. The passive snubber network improves efficiency, power density, and transient performance, reduces switching losses and EMI, and permits fixed frequency operation of the switching power converter. The passive snubber network also reduces and/or eliminates large peak currents and reverse recovery current spikes normally seen in conventional switching power converters. The proposed passive snubber network may be used in various switching power converter topologies such as boost, buck, balanced, and flyback power converters.
摘要翻译： 提出了采用功率范围高达5KW的新型无损零电压切换无源缓冲网络的开关电源转换器。 无源缓冲网络提高了效率，功率密度和瞬态性能，降低了开关损耗和EMI，并允许开关电源转换器的固定频率运行。 无源缓冲网络还减少和/或消除常规开关功率转换器中通常看到的大峰值电流和反向恢复电流尖峰。 所提出的无源缓冲网络可以用于各种开关功率转换器拓扑，例如升压，降压，平衡和反激式功率转换器。
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10.发明授权
公开(公告)号：US5094635A
公开(公告)日：1992-03-10
申请号：US613321
申请日：1990-11-14
IPC分类号： H01R11/28
CPC分类号： H01R11/287
摘要： A kit 11 comprises an electrical apparatus 13, a clamp connector 15, a nut connector 17 and an adaptor post 19. Kit 11 enables electrical apparatus 13 to be selectively connected in an automobile in circuit alternatively with an engine starter circuit 21 and a battery 23 having post terminals 25, 27 (FIG. 1) and with an engine starter circuit 29 and an automobile battery 31 having nut terminals 33, 35 (FIG. 2) by appropriate connection of adaptor post 19. Adaptor post 19 is interchangeable between a location (FIG. 2) in which it is clamped in the clamp connector 15 of apparatus 13 and a location (FIG. 1) in which it is threaded into the nut connector 17 of apparatus 13.
摘要翻译： 套件11包括电气设备13，夹具连接器15，螺母连接器17和适配器杆19.套件11使得电气设备13能够与发动机起动电路21和电池23交替地选择性地连接在汽车中 具有后端子25,27（图1）以及具有发动机起动器电路29的汽车电池31和具有通过适配器适配器19连接的螺母端子33,35（图2）的汽车电池31.适配器支柱19可在位置 （图2），其中它被夹紧在设备13的夹紧连接器15中，以及位置（图1），其中螺纹连接到设备13的螺母连接器17中。
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