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    • 21. 发明申请
    • DC-DC BOOST CONVERTER FOR PHOTOVOLTAIC APPLICATIONS BASED ON THE CONCEPT OF THE THREE-STATE SWITCHING CELL
    • 基于三态切换单元概念的光伏应用DC-DC升压转换器
    • WO2014206463A1
    • 2014-12-31
    • PCT/EP2013/063413
    • 2013-06-26
    • HUAWEI TECHNOLOGIES CO., LTD.TORRICO, GroverMA, Jun
    • TORRICO, GroverMA, Jun
    • H02M3/158
    • H02M3/158H02M3/1584H02M2001/0064H02M2003/1586Y02E10/56
    • The present invention relates to a DC-DC boost converter for photovoltaic applications, where the DC-DC converter comprises an input terminal (14), and an output terminal (6) and a first autotransformer (37) comprising an intermediate terminal (15) and first and second end terminals (16, 17), a first diode (19), one terminal of which is coupled to said first end terminal (16), a second diode (20), one terminal of which is coupled to said second end terminal (17); where the second terminals of said diodes are connected to said output terminal (6); and where the output terminal (6) is coupled to said common terminal (8) of the converter through a first capacitor (10). In the converter according to the invention the first and second end terminals (16, 17) of the first autotransformer (37) are respectively connected to first and third terminals (55, 59) of a three-state switching cell (21), and second and fourth terminals (56, 60) of the three-state switching cell (21) are connected to the common terminal (8) of the converter. Preferably, the converter of the invention is provided with a snubber circuit (36, 18) between the input terminal and the output terminal of the converter in order to minimize the recovery current of boost diodes added to the three-state switching cell.
    • 本发明涉及用于光伏应用的DC-DC升压转换器,其中DC-DC转换器包括输入端子(14),以及包括中间端子(15)的输出端子(6)和第一自耦变压器(37) 以及第一和第二端子(16,17),第一二极管(19),其一个端子耦合到所述第一端子端子(16),第二二极管(20),其一个端子耦合到所述第二端子 终端(17); 其中所述二极管的第二端子连接到所述输出端子(6); 并且其中输出端子(6)通过第一电容器(10)耦合到转换器的所述公共端子(8)。 在根据本发明的转换器中,第一自耦变压器(37)的第一和第二端子(16,17)分别连接到三态开关单元(21)的第一和第三端子(55,59),并且 三态开关单元(21)的第二和第四端子(56,60)连接到转换器的公共端子(8)。 优选地,本发明的转换器在转换器的输入端和输出端之间设置有缓冲电路(36,18),以便最小化添加到三态开关单元的升压二极管的恢复电流。