公开(公告)号：US5835364A

公开(公告)日：1998-11-10

申请号：US873844

申请日：1997-06-12

申请人： Frank A. DeWinter ,  Navid R. Zargari ,  Bin Wu ,  Yuan Xiao

发明人： Frank A. DeWinter ,  Navid R. Zargari ,  Bin Wu ,  Yuan Xiao

IPC分类号： H02M7/19 ,  H02M1/14

CPC分类号： H02M7/19

摘要： A PWM based converter including a Y-.DELTA., Y--Y transformer (or a .DELTA.--.DELTA., .DELTA.-Y transformer) wherein the Y-.DELTA. portion of the transformer phase shifts input voltage by 30.degree. with respect to the Y--Y portion of the transformer and thereby eliminates many low order supply line harmonics. The rectifier also includes two series connected PWM switching rectifiers, one rectifier receiving input voltages from the Y--Y portion of the transformer and the other rectifier receiving input voltages from the Y-.DELTA. portion of the transformer, and a controller for controlling the first and second rectifiers so as to eliminate low order harmonics on the supply lines that are not eliminated by the transformer. A capacitive bank is required between each rectifier and the transformer.

摘要翻译： 一种基于PWM的转换器，包括Y-DELTA，YY变压器（或DELTA-DELTA，DELTA-Y变压器），其中变压器的Y-DELTA部分将输入电压相对于变压器的YY部分移位30°， 从而消除了许多低阶电源线谐波。 整流器还包括两个串联的PWM开关整流器，一个整流器接收来自变压器的YY部分的输入电压，另一个整流器接收来自变压器的Y-DELTA部分的输入电压，以及用于控制第一和第二整流器 以消除电源线上未被变压器消除的低次谐波。 每个整流器和变压器之间需要一个电容组。