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公开(公告)号：US20120298890A1
公开(公告)日：2012-11-29
申请号：US13520469
申请日：2011-01-12
IPC分类号： G02B27/00
CPC分类号： H03K17/16 , H03K17/78 , H04B10/802
摘要： An optocoupler circuit includes a switch connected in parallel with a photo LED, the photo LED having an anode and a cathode. The anode is connected to a power supply via a decoupling capacitor. The optocoupler circuit is arranged so that the switch turns on the photo LED when in the open position. When closed, the switch directs current flow through a series resistor to ground and shunts current flow away from the photo LED to turn off the photo LED. A second capacitor is connected to the cathode of the photo LED. The second capacitor is wired in series with a second switch and a current limiting resistor connected to ground. The first switch and second switch operate in complementary states to prevent the cathode connected capacitor from discharging. The disclosed optocoupler circuit provides the ability to function at increased levels of common mode voltage transients.
摘要翻译： 光耦合器电路包括与光LED平行连接的开关，该光LED具有阳极和阴极。 阳极通过去耦电容器连接到电源。 光耦合器电路布置成使得当处于打开位置时，开关接通照明LED。 闭合时，开关将电流流过串联电阻器接地，并将电流从照片LED分流，以关闭照片LED。 第二电容器连接到照明LED的阴极。 第二电容器与第二开关和限流电阻串联连接到地。 第一开关和第二开关工作在互补状态，以防止阴极连接的电容器放电。 所公开的光耦合器电路提供在增加的共模电压瞬变水平下工作的能力。
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公开(公告)号：US08624213B2
公开(公告)日：2014-01-07
申请号：US13520469
申请日：2011-01-12
CPC分类号： H03K17/16 , H03K17/78 , H04B10/802
摘要： An optocoupler circuit includes a switch connected in parallel with a photo LED, the photo LED having an anode and a cathode. The anode is connected to a power supply via a decoupling capacitor. The optocoupler circuit is arranged so that the switch turns on the photo LED when in the open position. When closed, the switch directs current flow through a series resistor to ground and shunts current flow away from the photo LED to turn off the photo LED. A second capacitor is connected to the cathode of the photo LED. The second capacitor is wired in series with a second switch and a current limiting resistor connected to ground. The first switch and second switch operate in complementary states to prevent the cathode connected capacitor from discharging. The disclosed optocoupler circuit provides the ability to function at increased levels of common mode voltage transients.
摘要翻译： 光耦合器电路包括与光LED平行连接的开关，该光LED具有阳极和阴极。 阳极通过去耦电容器连接到电源。 光耦合器电路布置成使得当处于打开位置时，开关接通照明LED。 闭合时，开关将电流流过串联电阻器接地，并将电流从照片LED分流，以关闭照片LED。 第二电容器连接到照明LED的阴极。 第二个电容器与第二个开关和限流电阻相连接在地上。 第一开关和第二开关工作在互补状态，以防止阴极连接的电容器放电。 所公开的光耦合器电路提供在增加的共模电压瞬变水平下工作的能力。
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公开(公告)号：US09024559B2
公开(公告)日：2015-05-05
申请号：US13640322
申请日：2010-05-04
CPC分类号： H03K17/168 , H02P27/06 , H03K17/107 , H03K17/127 , H03K17/163
摘要： A converter module for a variable speed drive having a semiconductor device for precharge is described. The precharge circuit includes switching modules, one switching module with a first semiconductor switch connected in parallel or series with a second semiconductor switch. The second semiconductor switch is switched on and off during the precharge operation in order to limit the inrush current into the DC Link. After the precharge operation, the second semiconductor switch is turned on all the time and acts like a diode. The second semiconductor device may have a lower maximum current rating than the main semi-conductor devices. The lower current rated semiconductor device experience the same short circuit current as the higher current rated semiconductor device. The lower current rated semiconductor device can be supplied with a larger gate to emitter voltage than the higher current rated semiconductor device to equalize current between semiconductor devices.
摘要翻译： 描述了一种用于具有用于预充电的半导体器件的变速驱动器的转换器模块。 预充电电路包括开关模块，一个开关模块，其具有与第二半导体开关并联或串联连接的第一半导体开关。 在预充电操作期间，第二半导体开关被接通和关断，以限制进入DC Link的浪涌电流。 在预充电操作之后，第二半导体开关始终导通，并且起二极管的作用。 第二半导体器件可以具有比主半导体器件更低的最大电流额定值。 较低电流额定值的半导体器件具有与较高电流额定值的半导体器件相同的短路电流。 较低额定电流的半导体器件可以提供比较高电流额定半导体器件更大的栅极至发射极电压，以均衡半导体器件之间的电流。
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公开(公告)号：US08735955B2
公开(公告)日：2014-05-27
申请号：US12999818
申请日：2009-07-08
IPC分类号： H01L27/108 , H01L29/66 , H01L23/52
CPC分类号： H01L23/34 , H01L23/473 , H01L23/50 , H01L25/072 , H01L2224/48227 , H01L2224/85424 , H01L2224/85439 , H01L2224/85444 , H01L2224/85447 , H01L2224/85469 , H01L2924/13034 , H01L2924/1305 , H01L2924/13055 , H01L2924/13091 , H05K1/0215 , H05K1/0306 , H05K1/162 , H05K3/0061 , H05K3/341 , H05K7/1432 , H05K2201/10166
摘要： A grounding system for a semiconductor module of a variable speed drive includes a first conductive layer, a second conductive layer; a substrate disposed between the first conductive layer and the second conductive layer; and a base attached to the second conductive layer, the base being connected to earth ground via a grounding harness. The first conductive layer is in electrical contact with the semiconductor module and the substrate, and electrically insulated from the second conductive layer by the substrate. The second conductive layer is in electrical contact with the substrate and disposed between the substrate and the base in electrical communication with an earth ground. The first conductive layer, the substrate and the second conductive layer form a capacitance path between the semiconductor module and the base as well as electrical conductors and the base for reduction circulating currents within the semiconductor module.
摘要翻译： 用于变速驱动器的半导体模块的接地系统包括第一导电层，第二导电层; 设置在所述第一导电层和所述第二导电层之间的衬底; 以及附接到所述第二导电层的基座，所述基座经由接地线束连接到大地。 第一导电层与半导体模块和衬底电接触，并且通过衬底与第二导电层电绝缘。 第二导电层与衬底电接触并且设置在与地面电连通的衬底和基底之间。 第一导电层，衬底和第二导电层在半导体模块和基底之间形成电容路径，以及电导体和用于还原半导体模块内的循环电流的基极。
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公开(公告)号：US20100083693A1
公开(公告)日：2010-04-08
申请号：US12572915
申请日：2009-10-02
申请人： Michael S. Todd , Zhiqiao Wu , Kanishk Dubey , Justin Drew Warner , Konstantin Borisov , Scott V. Slothower , John C. Hansen , Ivan Jadric , Shreesha Adiga-Manoor
发明人： Michael S. Todd , Zhiqiao Wu , Kanishk Dubey , Justin Drew Warner , Konstantin Borisov , Scott V. Slothower , John C. Hansen , Ivan Jadric , Shreesha Adiga-Manoor
CPC分类号： H02P6/085 , F25B49/025 , F25B2600/0253 , Y02B30/741
摘要： A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive receives an input AC power at a fixed input AC voltage and a fixed input frequency, and provides an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter and configured to filter and store the DC voltage from the converter. An inverter is connected to the DC link. A motor is connectable to the compressor for powering the compressor. A controller is arranged to control switching in the converter and the inverter. The controller is arranged to apply randomized pulse width modulation to vary the switching frequency of transistors in the converter and the inverter at each switching cycle. The motor may be a permanent magnet synchronous motor.
摘要翻译： 用于冷却器系统的压缩机的驱动系统包括变速驱动器。 变速驱动器以固定的输入交流电压和固定的输入频率接收输入的交流电力，并提供可变电压和可变频率的输出AC电力。 变速驱动器包括连接到AC电源的转换器。 该转换器被布置成将输入的AC电压转换成DC电压。 直流链路连接到转换器，并配置为对转换器的直流电压进行滤波和存储。 逆变器连接到直流链路。 电动机可连接到压缩机以为压缩机供电。 控制器被设置为控制转换器和逆变器中的开关。 控制器被布置为在每个开关周期中应用随机脉冲宽度调制以改变转换器和逆变器中的晶体管的开关频率。 电动机可以是永磁同步电动机。
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公开(公告)号：US20130026958A1
公开(公告)日：2013-01-31
申请号：US13640322
申请日：2010-05-04
IPC分类号： H02P27/00
CPC分类号： H03K17/168 , H02P27/06 , H03K17/107 , H03K17/127 , H03K17/163
摘要： A converter module for a variable speed drive having a semiconductor device for precharge is described. The precharge circuit includes switching modules, one switching module with a first semiconductor switch connected in parallel or series with a second semiconductor switch. The second semiconductor switch is switched on and off during the precharge operation in order to limit the inrush current into the DC Link. After the precharge operation, the second semiconductor switch is turned on all the time and acts like a diode. The second semiconductor device may have a lower maximum current rating than the main semi-conductor devices. The lower current rated semiconductor device experience the same short circuit current as the higher current rated semiconductor device. The lower current rated semiconductor device can be supplied with a larger gate to emitter voltage than the higher current rated semiconductor device to equalize current between semiconductor devices.
摘要翻译： 描述了一种用于具有用于预充电的半导体器件的变速驱动器的转换器模块。 预充电电路包括开关模块，一个开关模块，其具有与第二半导体开关并联或串联连接的第一半导体开关。 在预充电操作期间，第二半导体开关被接通和关断，以限制进入DC Link的浪涌电流。 在预充电操作之后，第二半导体开关始终导通，并且起二极管的作用。 第二半导体器件可以具有比主半导体器件更低的最大电流额定值。 较低电流额定值的半导体器件具有与较高电流额定值的半导体器件相同的短路电流。 较低额定电流的半导体器件可以提供比较高电流额定半导体器件更大的栅极至发射极电压，以均衡半导体器件之间的电流。
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公开(公告)号：US08174853B2
公开(公告)日：2012-05-08
申请号：US13034308
申请日：2011-02-24
IPC分类号： H02M1/12
CPC分类号： H02M5/4585 , H02M1/126 , H02M7/003
摘要： Systems and methods for improved VSDs are provided. One embodiment relates to an apparatus for common mode and differential mode filtering for motor or compressor bearing protection when operating with VSDs, including conducted EMI/RFI input power mains mitigation. Another embodiment relates to a method to extend the synchronous operation of an Active Converter to the AC mains voltage during complete line dropout. Another embodiment relates to an Active Converter-based Variable Speed Drive system with Improved Full Speed Efficiency.
摘要翻译： 提供了改进的VSD的系统和方法。 一个实施例涉及一种用于在使用VSD进行运行时的电动机或压缩机轴承保护的共模和差模过滤装置，包括传导EMI / RFI输入电源减轻。 另一个实施例涉及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电源电压的方法。 另一实施例涉及具有改进的全速效率的基于有源转换器的变速驱动系统。
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公开(公告)号：US20110101907A1
公开(公告)日：2011-05-05
申请号：US12999818
申请日：2009-07-08
CPC分类号： H01L23/34 , H01L23/473 , H01L23/50 , H01L25/072 , H01L2224/48227 , H01L2224/85424 , H01L2224/85439 , H01L2224/85444 , H01L2224/85447 , H01L2224/85469 , H01L2924/13034 , H01L2924/1305 , H01L2924/13055 , H01L2924/13091 , H05K1/0215 , H05K1/0306 , H05K1/162 , H05K3/0061 , H05K3/341 , H05K7/1432 , H05K2201/10166
摘要： A grounding system for a semiconductor module of a variable speed drive includes a first conductive layer, a second conductive layer; a substrate disposed between the first conductive layer and the second conductive layer; and a base attached to the second conductive layer, the base being connected to earth ground via a grounding harness. The first conductive layer is in electrical contact with the semiconductor module and the substrate, and electrically insulated from the second conductive layer by the substrate. The second conductive layer is in electrical contact with the substrate and disposed between the substrate and the base in electrical communication with an earth ground. The first conductive layer, the substrate and the second conductive layer form a capacitance path between the semiconductor module and the base as well as electrical conductors and the base for reduction circulating currents within the semiconductor module.
摘要翻译： 用于变速驱动器的半导体模块的接地系统包括第一导电层，第二导电层; 设置在所述第一导电层和所述第二导电层之间的衬底; 以及附接到所述第二导电层的基座，所述基座经由接地线束连接到大地。 第一导电层与半导体模块和衬底电接触，并且通过衬底与第二导电层电绝缘。 第二导电层与衬底电接触并且设置在与地面电连通的衬底和基底之间。 第一导电层，衬底和第二导电层在半导体模块和基底之间形成电容路径，以及电导体和用于还原半导体模块内的循环电流的基极。
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