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1.发明授权公开(公告)号：US07640767B2
公开(公告)日：2010-01-05
申请号：US11422964
申请日：2006-06-08
IPC分类号： F25D17/02
CPC分类号： F25B49/025 , F25B31/008 , F25B2600/0253 , F25D23/006 , Y02B30/741
摘要： The present invention is directed to a power transformer and VSD mounted on the chiller equipment. The transformer is preferably a liquid-filled transformer rated for medium/high voltage input, and at least two output low voltages, one voltage for the VSD and other power equipment, and another voltage for the control panel and control equipment. The placement of the power transformer on the chiller eliminates the need to allocate additional floor space for an auxiliary transformer or medium/high voltage VSD. The transformer also includes cooling means in the form of a heat exchanger in which the liquid is cooled by circulating condenser water, chilled water or refrigerant from the chiller system. The cooling means may also be connected to cooling coils connected to the VSD. The size of the power transformer is significantly reduced by the use of the chiller system to remove heat from the transformer while in operation, thereby maintaining the ambient temperature rise of the transformer within its rated operating temperature range. The transformer and VSD heat is discharged to the outside ambient eliminating additional cooling requirements for the equipment room.
摘要翻译： 本发明涉及一种安装在冷却器设备上的电力变压器和VSD。 变压器优选为额定为中/高电压输入的液体充满的变压器，以及至少两个输出低电压，用于VSD和其他电力设备的一个电压，以及用于控制面板和控制设备的另一个电压。 将电力变压器放置在冷却器上，无需为辅助变压器或中/高压VSD分配额外的占地面积。 变压器还包括热交换器形式的冷却装置，其中液体通过从冷却器系统循环冷凝器水，冷冻水或制冷剂来冷却。 冷却装置也可以连接到连接到VSD的冷却线圈。 通过使用冷却器系统在运行中除去变压器的热量，可以显着降低电力变压器的尺寸，从而将变压器的环境温度升高保持在其额定工作温度范围内。 变压器和VSD热量排放到外部环境中，消除了机房的额外冷却要求。
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公开(公告)号：US5850160A
公开(公告)日：1998-12-15
申请号：US877623
申请日：1997-06-18
摘要： A gate drive circuit for a silicon controlled rectifier (SCR) connected in an a-c power circuit includes a voltage divider network connected between a d-c voltage source and the SCR for developing a varying voltage on a control node, depending upon whether the anode-to-cathode a-c voltage of the SCR is positive or negative. A first switching transistor, responsive to the control node voltage, controls conduction of a second switching transistor connected between the d-c voltage source and a voltage regulated driver circuit. In this way, a constant drive current is applied to the SCR gate only while the anode-to-cathode voltage of the SCR is positive.
摘要翻译： 用于连接在交流电源电路中的可控硅整流器（SCR）的栅极驱动电路包括连接在直流电压源和SCR之间的分压器网络，用于在控制节点上产生变化的电压，这取决于阳极 - SCR的阴极交流电压为正或负。 响应于控制节点电压的第一开关晶体管控制连接在d-c电压源和调压驱动电路之间的第二开关晶体管的导通。 以这种方式，只有在SCR的阳极至阴极电压为正时才将稳定的驱动电流施加到SCR栅极。
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3.发明授权Control system for controlling an SCR network to regulate three-phase A-C power flow 失效用于控制SCR网络以调节三相A-C功率流的控制系统
公开(公告)号：US4499534A
公开(公告)日：1985-02-12
申请号：US434018
申请日：1982-10-12
CPC分类号： H02M7/1623
摘要： The power delivered from a three-phase A-C power source and through a network of SCR's (connected, for example, to form a full wave rectifier bridge or to provide an A-C switch) to a load circuit is adjusted by controlling the conduction angles of the SCR's. The control is achieved by developing, from only one of the three alternating phase voltages provided by the A-C power supply, a reference square wave signal of the same frequency and whose amplitude excursions are precisely synchronized or keyed to the zero voltage crossings of the selected phase voltage, even though that phase voltage may include undesired harmonics, noise, transients or other distortion components. Since the influence of the undesired signal components has now been eliminated and since the reference square wave signal also has a fixed phase relationship with the other two phase voltages, logic circuitry may be controlled by the reference square wave signal, and by a d-c control voltage representing a desired power flow to the load circuit, to produce gating signals for triggering the SCR's into conduction at the angles required to translate the desired power to the load circuit. With this arrangement, control of all three phases is made immune to undesired signal components in any of the phase voltages.
摘要翻译： 通过控制三相交流电源和通过SCR网络（例如，连接，例如，形成全波整流桥或提供交流开关）到负载电路的功率来调节功率 SCR的。 该控制通过仅从交流电源提供的三个交流相电压中的仅一个中开发出相同频率的参考方波信号，并且其振幅偏移精确同步或键合到所选相位的零电压交叉点 电压，即使该相电压可能包括不期望的谐波，噪声，瞬变或其他失真分量。 由于现在已经消除了不需要的信号分量的影响，并且由于参考方波信号也与其它两相电压具有固定的相位关系，所以逻辑电路可以由参考方波信号和直流控制电压 表示到负载电路的期望功率流，以产生用于将SCR触发成以将期望功率转换到负载电路所需的角度的导通的门控信号。 利用这种布置，可以在任何相电压中对所有三相的控制免于不需要的信号分量。
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4.发明申请公开(公告)号：US20070283708A1
公开(公告)日：2007-12-13
申请号：US11422964
申请日：2006-06-08
CPC分类号： F25B49/025 , F25B31/008 , F25B2600/0253 , F25D23/006 , Y02B30/741
摘要： The present invention is directed to a power transformer and VSD mounted on the chiller equipment. The transformer is preferably a liquid-filled transformer rated for medium/high voltage input, and at least two output low voltages, one voltage for the VSD and other power equipment, and another voltage for the control panel and control equipment. The placement of the power transformer on the chiller eliminates the need to allocate additional floor space for an auxiliary transformer or medium/high voltage VSD. The transformer also includes cooling means in the form of a heat exchanger in which the liquid is cooled by circulating condenser water, chilled water or refrigerant from the chiller system. The cooling means may also be connected to cooling coils connected to the VSD. The size of the power transformer is significantly reduced by the use of the chiller system to remove heat from the transformer while in operation, thereby maintaining the ambient temperature rise of the transformer within its rated operating temperature range. The transformer and VSD heat is discharged to the outside ambient eliminating additional cooling requirements for the equipment room.
摘要翻译： 本发明涉及一种安装在冷却器设备上的电力变压器和VSD。 变压器优选为额定为中/高电压输入的液体充满的变压器，以及至少两个输出低电压，用于VSD和其他电力设备的一个电压，以及用于控制面板和控制设备的另一个电压。 将电力变压器放置在冷却器上，无需为辅助变压器或中/高压VSD分配额外的占地面积。 变压器还包括热交换器形式的冷却装置，其中液体通过从冷却器系统循环冷凝器水，冷冻水或制冷剂来冷却。 冷却装置也可以连接到连接到VSD的冷却线圈。 通过使用冷却器系统在运行中除去变压器的热量，可以显着降低电力变压器的尺寸，从而将变压器的环境温度升高保持在其额定工作温度范围内。 变压器和VSD热量排放到外部环境中，消除了机房的额外冷却要求。
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公开(公告)号：US4554463A
公开(公告)日：1985-11-19
申请号：US498366
申请日：1983-05-26
CPC分类号： H03K17/79 , H03K17/725 , H03K2217/0036 , Y10T307/773
摘要： The power dissipated, in a trigger circuit for gating on a semiconductor switch, is minimized by employing a constant current source to provide the gate trigger current. This assures adequate triggering regardless of supply voltage variations or switch intrinsic control voltage requirements. Power is saved by supplying only the current required to drive the semiconductor switch on, thereby preventing overdrive. With constant d-c gate current, the precise amount of power needed to turn on and close the switch is provided while wasting relatively little energy due to gate intrinsic voltage variations of the switch or to input line voltage variations.
摘要翻译： 通过使用恒流源来提供栅极触发电流，在用于半导体开关上的门控的触发电路中消耗的功率被最小化。 无论电源电压如何变化或切换内部控制电压要求，都可确保足够的触发。 通过仅提供驱动半导体开关所需的电流来节省功率，从而防止过驱动。 使用恒定的d-c栅极电流，提供了导通和闭合开关所需的精确功率，同时由于开关的栅极固有电压变化或输入线路电压变化而浪费相对较少的能量。
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公开(公告)号：US06434003B1
公开(公告)日：2002-08-13
申请号：US09840058
申请日：2001-04-24
IPC分类号： H05K720
CPC分类号： H05K7/20927
摘要： The present invention relates to a cold plate for cooling electronic components comprising a base having a top surface onto which at least one electronic component is to be placed; a cooling well formed in the top of the base and open at the top; a feed channel formed in the base for carrying fluid into the cooling well; a drain channel formed in the base for carrying cooling fluid away from the cooling well; cooling well inlets and outlets formed in the cooling well and in communication with the feed channel and drain channels, respectively. The feed and drain channels are sufficiently large relative to the size and flow characteristics of the well and cooling well inlets and outlets such that when the cooling fluid flows through the device, the pressure drop across the feed channel is substantially less than the pressure drop across the well.
摘要翻译： 本发明涉及一种用于冷却电子部件的冷板，包括：具有至少一个电子部件的顶表面的基座; 冷却井形成在基部的顶部并在顶部开口; 在基座中形成的用于将流体输送到冷却井中的进料通道; 形成在基座中的用于将冷却流体从冷却井运送的排水通道; 在冷却井中形成的冷却井入口和出口分别与进料通道和排放通道连通。 进料和排出通道相对于井和冷却井入口和出口的尺寸和流动特性足够大，使得当冷却流体流过装置时，跨进料通道的压降实质上小于 那个井
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公开(公告)号：US06404265B1
公开(公告)日：2002-06-11
申请号：US09373502
申请日：1999-08-13
IPC分类号： H03K1772
CPC分类号： H02M1/08
摘要： Systems consistent with this invention comprise a trigger circuit for triggering a silicon device having a control terminal, where the silicon device is subject to variations in the intrinsic control requirements. The trigger circuit comprises a source of direct current (DC) supply voltage, and a DC-to-DC current mode Buck converter for converting the supply voltage into an output DC current not subject to undesired variations due to variations in the supply voltage, the Buck converter supplying to the control terminal a minimum current to turn on the silicon device despite the variations in the intrinsic control requirements. The silicon device may comprise a silicon controlled rectifier (SCR) with a gate terminal, an anode terminal, and a cathode terminal, and wherein the control terminal is the gate terminal, and wherein the variations in the intrinsic control requirements are variations in the intrinsic gate-to-cathode control current and voltage requirements.
摘要翻译： 与本发明一致的系统包括用于触发具有控制端子的硅器件的触发电路，其中硅器件受到固有控制要求的变化。 触发电路包括直流（DC）电源电压源和DC-DC电流模式降压转换器，用于将电源电压转换成不受供电电压变化引起的不期望的变化的输出直流电流， 降压转换器为控制端子提供最小电流以打开硅器件，尽管内部控制要求有变化。 硅器件可以包括具有栅极端子，阳极端子和阴极端子的可控硅整流器（SCR），并且其中控制端子是栅极端子，并且其中本征控制要求的变化是内在的 门到阴极控制电流和电压要求。
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公开(公告)号：US06339352B1
公开(公告)日：2002-01-15
申请号：US09810662
申请日：2001-03-19
IPC分类号： H03K3037
CPC分类号： H03K3/0377
摘要： A system and method for providing an anticipatory Schmitt trigger circuit that changes the output level of the trigger circuit in anticipation of crossing a predetermined voltage value such as a zero voltage level. In an exemplary embodiment, the anticipatory Schmitt trigger includes a comparator, a feedback resistor, an input resistor, a pull-up resistor, a plurality of voltage divider resistors, and a capacitor.
摘要翻译： 一种用于提供预期的施密特触发电路的系统和方法，该电路改变触发电路的输出电平，以预期跨越诸如零电压电平的预定电压值。 在示例性实施例中，预期施密特触发器包括比较器，反馈电阻器，输入电阻器，上拉电阻器，多个分压器电阻器和电容器。
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公开(公告)号：US08014110B2
公开(公告)日：2011-09-06
申请号：US11932054
申请日：2007-10-31
申请人： Harold R. Schnetzka , Ivan Jadric
发明人： Harold R. Schnetzka , Ivan Jadric
CPC分类号： H02M1/12 , F25B49/025 , F25B2600/021 , H02M2001/123 , H02P27/08 , H02P29/50 , H02P2201/03 , H03L7/093 , H03L7/095 , H05K7/20936 , Y02B30/741
摘要： Systems and methods for operating a variable speed drive to receive an input AC power at a fixed AC input voltage and frequency and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter stage to convert the input AC voltage to a boosted DC voltage, a DC link connected to the converter stage to filter and store the boosted DC voltage from the converter stage; and an inverter stage to convert the boosted DC voltage into AC power with variable voltage and the variable frequency. An integral bypass contactor is connected in parallel with the VSD between the AC power source and the AC output power. The integral bypass contactor is arranged to bypass the VSD when the VSD output frequency and voltage are approximately equal with the AC input voltage and frequency.
摘要翻译： 用于操作变速驱动器以固定的AC输入电压和频率接收输入AC电力的系统和方法，并以可变电压和可变频率提供输出AC电力。 变速驱动器包括转换器级，用于将输入交流电压转换为升压直流电压;连接到转换器级的直流链路，用于对来自转换器级的升压直流电压进行滤波和存储; 以及将升压的直流电压转换为具有可变电压和可变频率的交流电的逆变器级。 一体式旁路接触器与交流电源和交流输出电源之间的VSD并联连接。 当VSD输出频率和电压与交流输入电压和频率近似相等时，集成旁路接触器被布置为绕过VSD。
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10.发明授权System and method to extend synchronous operation of an active converter in a variable speed drive 有权扩展变频器中有源转换器的同步运行的系统和方法公开(公告)号：US07764041B2
公开(公告)日：2010-07-27
申请号：US11932280
申请日：2007-10-31
IPC分类号： H02P27/04
CPC分类号： H02M1/12 , F25B49/025 , F25B2600/021 , H02M2001/123 , H02P27/08 , H02P29/50 , H02P2201/03 , H03L7/093 , H03L7/095 , H05K7/20936 , Y02B30/741
摘要： Systems and methods for synchronous operation of variable speed drives having active converters include extending the synchronous operation of an active converter to the AC mains voltage during complete line dropout. A phase angle control circuit includes a squaring amplifier, a first phase-lock loop circuit associated and a second phase-lock loop circuit. The squaring amplifier receives the AC power source and outputs a rectangular output signal to a pair of phase lock loop (PLL) circuits. The first PLL circuit with a first lag-lead filter is configured with a high cutoff frequency to provide the converter stage with a phase angle parameter; and the second phase-lock loop circuit including a second lag-lead filter configured to have a low cutoff frequency to provide the lag-lead filter the capability of storing the phase angle of the mains voltage during mains interruption.
摘要翻译： 具有有源转换器的变速驱动器的同步操作的系统和方法包括在完整的线路断开期间将有源转换器的同步操作扩展到AC电源电压。 相位角控制电路包括平方放大器，相关的第一锁相环电路和第二锁相环电路。 平方放大器接收交流电源，并向一对锁相环（PLL）电路输出矩形输出信号。 具有第一滞后引线滤波器的第一PLL电路配置有高截止频率，以向转换器级提供相位角参数; 并且所述第二锁相环电路包括被配置为具有低截止频率的第二滞后引线滤波器，以提供所述滞后引线滤波器在电源中断期间存储所述电源电压的相位角的能力。
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