公开(公告)号：US07110269B2

公开(公告)日：2006-09-19

申请号：US11199778

申请日：2005-08-09

Applicant: Xiao Hong Cao ,  Shu-Yuen Ron Hui

Inventor： Xiao Hong Cao ,  Shu-Yuen Ron Hui

IPC: H02M3/335 ,  H05B37/02

CPC classification number: H02M3/3376 ,  H02M2001/0058 ,  H05B41/2856 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: This invention relates to new soft-switching techniques for minimizing switching losses and stress in power electronic circuits using inverter legs. By choosing the switching frequency with specific relationships with the resonant frequency of the power electronic circuits, the proposed switching technique enables the power electronic circuits to achieve soft switching under full load and short-circuit conditions at the defined frequencies for both capacitive and inductive loads. This technique can be applied to an electronic circuit with two switches connected in totem pole configuration between two dc voltage rails or commonly known as a power inverter leg or inverter arm. Examples of these circuits are class-D power converter, half-bridge power converters and full-bridge power converters or inverters. The proposed techniques allow inverter circuits with resistive, capacitive and inductive loads to achieve soft switching.

Abstract translation: 本发明涉及用于最小化使用逆变器支路的电力电子电路中的开关损耗和应力的新的软开关技术。 通过选择具有与功率电子电路的谐振频率的特定关系的开关频率，所提出的开关技术使得电力电子电路能够在电容和电感负载的限定频率下在满载和短路条件下实现软开关。 该技术可以应用于具有两个直流电压轨道或通常称为电力逆变器支路或逆变臂的图腾柱配置的两个开关的电子电路。 这些电路的示例是D类功率转换器，半桥功率转换器和全桥功率转换器或逆变器。 所提出的技术允许具有电阻，电容和电感负载的逆变器电路实现软开关。