公开(公告)号：US09184672B2

公开(公告)日：2015-11-10

申请号：US13939916

申请日：2013-07-11

Applicant: Industrial Technology Research Institute

Inventor： Chau-Chun Wen ,  Ming-Hung Yu

IPC: H02M7/497 ,  H02M7/48 ,  H02M1/00 ,  H02M3/335

CPC classification number: H02M7/4807 ,  H02M3/33592 ,  H02M7/497 ,  H02M2001/0058 ,  H02M2001/0077 ,  H02M2007/4815 ,  Y02B70/1475 ,  Y02B70/1491

Abstract: A DC-to-AC power conversion method is provided, including: generating an AC reference signal and an AC zero crossing detection signal; generating an error signal based on the AC reference signal and an output current or an output voltage at an AC output terminal; generating a turn-off signal based on the error signal and an input current at a DC input terminal; detecting or predicting a valley voltage of a resonance voltage to generate a turn-on signal; generating first, second, third and fourth switching signals based on the AC zero crossing detection signal, the turn-off signal and the turn-on signal; and controlling first, second, third and fourth switching elements of power conversion modules with the first, second, third and fourth switching signals, to enable the first and second power conversion modules to convert the input current of the DC input terminal to the output current of the AC output terminal.

Abstract translation: 提供一种直流到交流电力转换方法，包括：产生交流参考信号和交流过零检测信号; 基于AC参考信号产生误差信号，并在AC输出端产生输出电流或输出电压; 基于所述误差信号和DC输入端子处的输入电流产生关断信号; 检测或预测谐振电压的谷值电压以产生导通信号; 基于所述AC过零检测信号，所述关断信号和所述点亮信号产生第一，第二，第三和第四开关信号; 以及利用所述第一，第二，第三和第四开关信号来控制所述功率转换模块的第一，第二，第三和第四开关元件，以使得所述第一和第二功率转换模块能够将所述DC输入端的输入电流转换为所述输出电流 的交流输出端子。