公开(公告)号：US20080174255A1

公开(公告)日：2008-07-24

申请号：US11931993

申请日：2007-10-31

Applicant: Harold R. SCHNETZKA ,  Ivan JADRIC ,  Shreesha ADIGA MANOOR

Inventor： Harold R. SCHNETZKA ,  Ivan JADRIC ,  Shreesha ADIGA MANOOR

IPC: H02P1/42 ,  H02P23/00 ,  H03H7/00

CPC classification number: H02M1/12 ,  F25B49/025 ,  F25B2600/021 ,  H02M2001/123 ,  H02P27/08 ,  H02P29/50 ,  H02P2201/03 ,  H03L7/093 ,  H03L7/095 ,  H05K7/20936 ,  Y02B30/741

Abstract: Systems and methods for improved Variable Speed Drives having active inverters include an input filter for filtering common mode and differential mode currents. A three-phase inductor has three windings, each winding of the three-phase inductor having a center tap dividing each winding into a pair of inductor sections; and a three-phase input capacitor bank connected in a wye configuration to the three center taps at one end, and to a common point at the opposite end. The three-phase input capacitor bank provides a short circuit for frequencies above a predetermined fundamental frequency for shunting such frequencies through the three phase capacitor bank, while passing the predetermined fundamental frequency to an input AC power source.

Abstract translation: 具有有源反相器的改进型变速驱动器的系统和方法包括用于滤除共模和差模电流的输入滤波器。 三相电感器具有三个绕组，三相电感器的每个绕组具有将每个绕组分成一对电感器部分的中心抽头; 以及三相输入电容器组，其以一个配置形式连接到一端的三个中心抽头，另一端连接到公共点。 三相输入电容器组为预定基频以上的频率提供短路，用于通过三相电容器组将这些频率分流，同时将预定基频通过输入AC电源。

公开(公告)号：US20080174257A1

公开(公告)日：2008-07-24

申请号：US11932054

申请日：2007-10-31

Applicant: Harold R. SCHNETZKA ,  Ivan JADRIC

Inventor： Harold R. SCHNETZKA ,  Ivan JADRIC

IPC: H02P23/00 ,  H02P25/16

CPC classification number: H02M1/12 ,  F25B49/025 ,  F25B2600/021 ,  H02M2001/123 ,  H02P27/08 ,  H02P29/50 ,  H02P2201/03 ,  H03L7/093 ,  H03L7/095 ,  H05K7/20936 ,  Y02B30/741

Abstract: 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.

Abstract translation: 用于操作变速驱动器以以固定的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。

公开(公告)号：US20080174258A1

公开(公告)日：2008-07-24

申请号：US11932280

申请日：2007-10-31

Applicant: Harold R. SCHNETZKA ,  Shreesha ADIGA MANOOR

Inventor： Harold R. SCHNETZKA ,  Shreesha ADIGA MANOOR

IPC: H02P27/04

CPC classification number: H02M1/12 ,  F25B49/025 ,  F25B2600/021 ,  H02M2001/123 ,  H02P27/08 ,  H02P29/50 ,  H02P2201/03 ,  H03L7/093 ,  H03L7/095 ,  H05K7/20936 ,  Y02B30/741

Abstract: 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.

Abstract translation: 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。