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    • 3. 发明申请
    • OPTOCOUPLER CIRCUIT FOR GATE DRIVER
    • 门控驱动器的电路板电路
    • WO2011090853A1
    • 2011-07-28
    • PCT/US2011/020915
    • 2011-01-12
    • JOHNSON CONTROLS TECHNOLOGY COMPANYADIGA-MANOOR, ShreeshaSCHNETZKA, Harold R.
    • ADIGA-MANOOR, ShreeshaSCHNETZKA, Harold R.
    • H03K17/78H03K17/16H04B10/00
    • H03K17/16H03K17/78H04B10/802
    • An optocoupler circuit (10) includes a switch (22) connected in parallel with a photo LED (20), the photo LED (20) having an anode and a cathode. The anode is connected to a power supply via a decoupling capacitor (28). The optocoupler circuit is arranged so that the switch turns on the photo LED when in the open position. When closed, the switch (22) directs current flow through a series resistor (32) to ground and shunts current flow away from the photo LED to turn off the photo LED. A second capacitor (38) is connected to the cathode of the photo LED. The second capacitor is wired in series with a second switch (40) and a current limiting resistor (42) connected to ground. The first switch (22) and second switch (04) operate in complementary states to prevent the cathode connected capacitor (38) from discharging. The disclosed optocoupler circuit (10) provides the ability to function at increased levels of common mode voltage transients.
    • 光耦合器电路(10)包括与光LED(20)并联连接的开关(22),所述光LED(20)具有阳极和阴极。 阳极经由去耦电容器(28)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。 当闭合时,开关(22)将电流流过串联电阻(32)接地,并将电流从照片LED分流,以关闭照片LED。 第二电容器(38)连接到照明LED的阴极。 第二电容器与第二开关(40)和限流电阻(42)串联连接到地。 第一开关(22)和第二开关(04)以互补状态工作,以防止阴极连接的电容器(38)放电。 所公开的光耦合器电路(10)提供在增加的共模电压瞬变水平下起作用的能力。
    • 7. 发明申请
    • VARIABLE SPEED DRIVE
    • 变速驱动
    • WO2011139269A1
    • 2011-11-10
    • PCT/US2010/033499
    • 2010-05-04
    • JOHNSON CONTROLS TECHNOLOGY COMPANYADIGA-MANOOR, ShreeshaTODD, Michael S.JADRIC, Ivan
    • ADIGA-MANOOR, ShreeshaTODD, Michael S.JADRIC, Ivan
    • H02H9/00H02M5/458H02P27/04H03K17/04H03K17/0814H03K17/10H03K17/12H03K17/567
    • H03K17/168H02P27/06H03K17/107H03K17/127H03K17/163
    • 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 semiconductor 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.
    • 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。