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CHOPPER CIRCUIT NEW

外国特許コード F200010200
整理番号 (S2019-0036-N0)
掲載日 2020年7月29日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP040752
国際公開番号 WO 2020085172
国際出願日 令和元年10月16日(2019.10.16)
国際公開日 令和2年4月30日(2020.4.30)
優先権データ
  • 特願2018-199400 (2018.10.23) JP
発明の名称 (英語) CHOPPER CIRCUIT NEW
発明の概要(英語) This chopper circuit 1 performs voltage conversion between a first DC voltage at a first external connection terminal and a second DC voltage at a second external connection terminal and is provided with: a first switch portion 11 having the first external connection terminal; a second switch portion 12 connected in series with the first switch portion 11 so that the conducting direction during ON-time matches that of the first switch portion 11 and having the second external connection terminal on the opposite side to the side where the first switch portion 11 is connected; one or a plurality of semiconductor power converters 13 cascade-connected to each other, which are provided on a wire branched from the wire for connecting the first switch portion 11 and the second switch portion 12; and an inductor 14 connected in series with the semiconductor power converters 13 on the wire branched from the wire for connecting the first switch portion 11 and the second switch portion 12.
従来技術、競合技術の概要(英語) BACKGROUND ART
In recent years, direct application of battery power to an electric railway system are stored in the field. For example, mounted on the railway vehicle using a high capacity lithium ion battery, the power supply from the overhead even in the case of zero, the travel distance of 25km or more in the charging of 1 has been achieved.
Generally of an electric railway overhead line voltage and the DC operating voltage of the energy storage element is different, the bidirectional chopper circuit (power converter) with a voltage conversion is necessary. Fig. 28 is, in general is a circuit diagram of a bidirectional chopper circuit. Is a bidirectional chopper circuit 101, so as to uniform the conduction direction of ON are connected in series, one on the other is turned off when the first switch section 1 (the positive-side valve device) 2 of the first and second 121-1 (negative-side valve device) and the 121-2 switch unit, the first switch section 1 switch section 2 and the second 121-1 and 121-2 are connected to the connection point of inductor 113 and a. The first switch section 1 switch section 2 is 121-2 and 121-1, are respectively, electrically connected to the on-time of the unidirectional semiconductor switching element connected in inverse parallel to the semiconductor switching elements and diodes for feedback. A direct current battery power storage system in the case of an electric railway, the high voltage side direct-current voltage corresponding to the voltage overhead Vdc1, the low-side direct-current voltage corresponding to the operating voltage of the energy storage element Vdc2 to. For example in the case of the standard voltage of the overhead is Vdc1=1500V, 600V is set to approximately 700V from Vdc2. In recent years, the capacity of the converter in the single plane of the 500kw bi-directional chopper capacity have been developed. In this case, the inductor current iL 500A and the DC component of the one or more.
In addition, in recent years, a bidirectional chopper circuit using the auxiliary converter has been proposed.
For example, the pair of second external connection terminals 1 of the first DC voltage of between 2 and 1 between the external connection terminals of the pair of the first DC voltage 2 between the first bi-directional or bi-directional voltage conversion in chopper circuits, so as to uniform the conduction direction of ON are connected in series, one on the other is turned off when the first switch unit 2 has first and second 1, the first switch 2 and the switch unit 1 of the second side opposite to the connection portion between the both sides of the pair of first terminals 1 of the main power converter and the external connection terminal, the first switch 2 and the second switch unit 1 connects the operation unit provided on a line branched from the wiring, 1 a plurality of cascade-connected to each other or two single-phase full-bridge power converter, the first switch 1 and switch 2 connects the first wiring on a line branched from, a single-phase full-bridge power converter to an inductor connected in series, is provided, the first switch 2 and the switch unit 1 of the first branched from the wiring that connects the inductor and a single-phase full-bridge power converter is provided on a wiring, any position of the pair of first external connection terminal 2 is provided with a bidirectional chopper circuit and is known (for example, see Patent Document 1.).
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO INSTITUTE OF TECHNOLOGY
  • 発明者(英語)
  • HAGIWARA, Makoto
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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