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    • 4. 发明申请
    • METHOD FOR OPERATING A WIRELESS CHARGER AND A WIRELESS CHARGER SYSTEM
    • WO2021048209A1
    • 2021-03-18
    • PCT/EP2020/075205
    • 2020-09-09
    • TDK ELECTRONICS AG
    • TOMASIK, JacekHEMPHILL, Hugh
    • H02J50/12H02M7/483H02M7/49H02M7/497
    • A method and an apparatus for operating a wireless charger (WPT_C) are presented. The wireless charger (WPT_C) comprises a multi-level converter arrangement (MLC) with a first converter (C1) and at least one further converter (C2, Cn). Each converter (C1, C2, Cn) is configured to receive a respective control signal vector (v_S1, v_S2, v_Sn) and to provide a pulse-width-modulated output signal (V1, V2, Vn) on its output terminals dependent on the received control signal vector (v_S1, v_S2, v_Sn). A set of parameter records (HB1, HB2, HBn) is provided and the parameter records (HB1, HB2, HBn) are assigned to the individual converters (C1, C2, Cn). For each converter (C1, C2, Cn) a control signal vector (v_S1, v_S2, v_Sn) is generated and provided dependent on the assigned parameter record (HB1, HB2, HBn), so that the multi- level converter arrangement (MLC) provides the supply power with a desired signal waveform to the power source resonator (PSR). The set of parameter records (HB1, HB2, HBn) depends on the desired signal waveform of the multi-level converter arrangement (MLC). Each parameter record (HB1, HB2, HBn) defines a duty-cycle and/or a phase shift angle (δ) of the converter output signal (V1, V2, Vn) and the duty-cycles and/or phase shift angles (δ) of at least two parameter records (HB1, HB2, HBn) are different.
    • 5. 发明申请
    • 電力変換装置
    • 电源转换器件
    • WO2016170672A1
    • 2016-10-27
    • PCT/JP2015/062490
    • 2015-04-24
    • 三菱電機株式会社
    • 黒田 憲一宇田 涼介北山 匡史
    • H02M7/497H02M7/12
    • H02M7/23H02M1/32H02M7/12H02M7/155H02M7/497H02M7/537H02M2001/0006H02M2001/0009
    •  マルチレベル変換器(3)では、3つのアーム(A1~A3)と3つのリアクトル(L11~L13)の間にそれぞれ3つの遮断器(B11~B13)が接続される。1つの遮断器(B11)は、2つの直流送電線(1,2)間で短絡事故が発生した場合に直流電流を遮断する直流遮断器である。2つの遮断器(B12,B13)の各々は、短絡事故が発生した場合に交流電流を遮断する交流遮断器である。短絡事故が発生した場合は、2つの交流遮断器(B12,B13)を非導通状態にした後に直流遮断器(B11)を非導通状態にすることにより、短絡電流を遮断することができる。
    • 在多电平转换器(3)中,三个断路器(B11至B13)分别连接在三个臂(A1至A3)和三个电抗器(L11至L13)之间。 其中一个断路器(B11)是在两个直流输电线路(1,2)之间发生短路事故时中断直流电流的直流断路器。 其他两个断路器(B12,B13)中的每一个都是用于在发生短路事故时中断交流电流的交流断路器。 当发生短路事故时,在使两个交流断路器(B12,B13)处于非导通状态之后,通过使直流断路器(B11)变为非导通状态,可以中断短路电流。
    • 9. 发明申请
    • AC/DC CONVERTER, DC/AC CONVERTER AND DC/DC CONVERTER AND METHOD OF CONTROL OF THE CONVERTER
    • WO2022229730A1
    • 2022-11-03
    • PCT/IB2022/052659
    • 2022-03-23
    • TERNA S.P.A.
    • AGNETTA, Vincenzo
    • H02M1/00H02M3/335H02M7/19H02M7/25H02M7/49H02M7/497H02M7/525H02M1/15H02M7/145
    • AC/DC converter wherein a three-phase trans former ( 2 ) comprises a plurality of first secondary windings ( 4-a, 4-b,... 4-n) magnetically linked with a first primary winding ( 3-T ), a plurality of second secondary windings ( 5-a, 5-b,... 5-n) magnetically linked with a second primary winding ( 3-S) and a plurality of third secondary windings ( 6-a, 6-b,... 6-n) magnetically linked with a third primary winding ( 3-R). There is provided a plurality of first, second and third reconfigurable connection modules each of which is respectively connected on the input side with a first, a second and a third secondary winding; the outputs of the first reconfigurable connection modules being connected in series to one another, the outputs of the second reconfigurable connection modules being connected in series to one another and the outputs of the third reconfigurable connection modules are connected in series to one another. Each reconfigurable module comprises electronic switches selectively controllable so that three connections can be made, including a direct connection, wherein the voltage supplied at the input of the reconfigurable connection module is transferred to its output with the same polarity, a bypass connection, wherein the output of the re configurable connection module is short-circuited and the output voltage at the module is substantially equal to zero, and a reverse connection, wherein the voltage supplied at the input of the re configurable connection module is transferred to its output with reversed polarity.