公开(公告)号：US20160190940A1

公开(公告)日：2016-06-30

申请号：US14958898

申请日：2015-12-03

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chao YAN ,  Yi-Qing YE ,  Zhi-Zhen LIAN

IPC: H02M3/335

CPC classification number: H02M3/285 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A method for controlling a resonant DC/DC power converting circuit is provided. The resonant DC/DC power converting circuit having a converter output and a converter input comprises at least two converters having similar structures and outputs connected in parallel as said converter output, and a controller. Each converter comprises a full-bridge inverter unit and a resonant unit. The full-bridge inverter unit is configured with at least four switches. The resonant unit is coupled with said full-bridge inverter unit. The controller outputs two groups of driving control signals to drive four switches in said two converters respectively. The method comprises: making said two converters operate at the same frequency and interleave with preset phase shift; and making two of driving control signals in one group interleave with preset angle to reduce output current of said converter corresponding controlled thereby, when output currents of said two converters are not approximately equal.

Abstract translation: 提供一种用于控制谐振DC / DC功率转换电路的方法。 具有转换器输出和转换器输入的谐振DC / DC功率转换电路包括具有与所述转换器输出并联连接的相似结构和输出的至少两个转换器和控制器。 每个转换器包括全桥逆变器单元和谐振单元。 全桥逆变器单元配置有至少四个开关。 谐振单元与所述全桥逆变器单元耦合。 控制器输出两组驱动控制信号，分别驱动所述两个转换器中的四个开关。 该方法包括：使所述两个转换器以相同的频率工作并以预置的相移进行交织; 并且当所述两个转换器的输出电流不近似相等时，使一组中的两个驱动控制信号以预设角度交错以减小对应的所述转换器的输出电流。