JP2019193405A - 電気車用電源システム - Google Patents
電気車用電源システム Download PDFInfo
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 66
- 230000001172 regenerating effect Effects 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- 238000009940 knitting Methods 0.000 claims description 6
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- 238000007599 discharging Methods 0.000 claims description 2
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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
Description
まず、電気車用電源システム1の構成について説明する。
図1は、第1の実施形態の電気車用電源システムを含む電気車用電源システムの構成図である。
電気車用電源装置11は、第1端子111と、第2端子112と、接地端子113と、インバータ12(変換部)と、制御部13とを備える。
電気車用電源装置21は、第1端子211と、第2端子212と、接地端子213と、インバータ22(変換部)と、制御部23とを備える。
電気車用電源システム1には、いくつかの動作状態が規定されており、それらについて順に説明する。
制御部13は、集電装置19を架線Lに接触させる。制御部13は、架線L側を選択するように切替器15を切り替える。この制御により切替器15は、インバータ12と架線Lとが電気的に接続される。架線Lが加圧状態にあれば、インバータ12の第1端子111に架線Lの電圧が掛る。例えば、その電圧が架線Lからの電力を変換可能な電圧である場合、制御部13は、インバータ12を、力行運転で稼働させる。これにより、インバータ12は、架線Lから受ける電力を変換して、その電力の一部を電動機41などに供給する。
また、電力変換装置10は、切替器15を切り替えることにより、インバータ12の回生運転によって発生する電力を、蓄電装置14の充電に利用することが可能になる。このように、蓄電装置14に接続される専用の充電装置を別途設けることなく、電気車用電源装置11がその充電装置を兼ねることができ、簡素に形成された電気車用電源装置11を提供することが可能となる。これに伴い、上記により保守性を高め、経済的な効果を奏することも可能になる。
第2の実施形態について図を参照し、詳細に説明する。第2の実施形態では、交流き電方式への適用例について説明する。以下、第1の実施形態との相違点を中心に説明する。
電力変換装置10Aと、電力変換装置20Aは、電気車用電源システム1の電力変換装置10と、電力変換装置20に対応する。
コンバータ17、27は、架線LAの電圧(以下、架線電圧という。)を直流電圧に変換する。インバータ12、22は、その直流電圧を、上記の架線電圧の交流とは異なる交流に変換する。上記以外の本実施形態における電気車用電源システム1Aの作用は、前述の第1の実施形態に示した基本動作状態、第1の動作状態、第2の動作状態の各動作状態における各部の作用と同様である。
第3の実施形態について図を参照し、詳細に説明する。第3の実施形態では、編成内の引き通し線が1系統に集約され、編成内の各インバータ回路が並列同期運転を行う事例について説明する。以下、第1の実施形態との相違点を中心に説明する。
電気車用電源システム1Bは、電力変換装置10と、電力変換装置20と、引き通し線33を備える。上記の通り、電気車用電源システム1Bは、第1の実施形態の電気車用電源システム1から、引き通し線31、32の間に設けられていた受給電接触器装置30が削除されており、それに代わる引き通し線33が、編成内の全車両に渡って設けられている。なお、電気車用電源システム1Bにおける、電力変換装置10、20は、互いに並列に接続されといて、並列同期運転が可能なものである。
電気車用電源システム1Bについての説明は、受給電接触器装置30に関すること以外の第1の実施形態の説明を参照する。
なお、インバータ12、22のうちの少なくとも1台のインバータが引き通し線に電圧を印加していれば、その電圧により引き通し線33が加圧された状態に維持される。仮に、インバータ12の動作状態を、基本動作状態から、第1の動作状態又は第2の動作状態に遷移させたとしても、インバータ12以外の少なくとも1台のインバータ回路が引き通し線に電圧を加圧していれば、引き通し線が加圧された状態に維持される。つまり、インバータ22がインバータ12の状態変化に応じることなく加圧状態を継続することにより、引き通し線が継続的に加圧される。これにより、制御部13は、負荷に対する給電を停止することなく、インバータ12の動作状態を切り替えることができ、蓄電装置の充電又は放電を始めることが可能となる。
第4の実施形態について図を参照し、詳細に説明する。第4の実施形態では、動作状態の切り替え時に停電が生じないようにする事例について説明する。以下、第1の実施形態との相違点を中心に説明する。
電気車用電源システム1Cは、電力変換装置10Cと、電力変換装置20と、引き通し線31、32と、受給電接触器装置30とを備える。
上記の通り、電力変換装置10Cにおける蓄電装置14の正極からインバータ12に向かう電流の経路は、切替器15を通る経路と、充電ダイオード18を通る経路の2つになる。電力変換装置10Cは、上記の2つの経路を有することで、蓄電装置14の電圧よりも架線電圧の方が高い場合には、インバータ12は、架線L側を電源にして稼働する。蓄電装置14の電圧よりも架線電圧の方が低い場合には、インバータ12は蓄電装置14側を電源にして稼働する。
Claims (6)
- 電気車の編成内に設けられている蓄電装置と架線の何れかに電気的に接続される第1端子と、
前記編成内の複数の電動機と自電源装置と自電源装置とは異なる外部電源装置とともに引き通し線に電気的に接続される第2端子と、
前記複数の電動機と前記外部電源装置の少なくとも何れかから供給される第1電力を前記第2端子から取り込み、自変換部の回生運転によって前記第1端子に直流電圧を発生させて前記蓄電装置を充電する第1動作状態と、前記蓄電装置と前記架線の何れかから供給される第2電力を前記第1端子から取り込み、自変換部の力行運転によって前記第2電力の一部を第3電力に変換して、前記第3電力を前記第2端子から出力する第2動作状態との何れかの動作状態の下で、前記第1端子と前記第2端子との間で電力を変換する変換部と
を備える電気車用電源システム。 - 前記第1端子を、前記架線と前記蓄電装置の何れかに電気的に接続する切替器
を備える請求項1記載の電気車用電源システム。 - 前記切替器は、
前記第1端子を、交流電圧が印加される前記架線と前記蓄電装置の何れかに電気的に接続する、
請求項2記載の電気車用電源システム。 - 前記自電源装置と前記外部電源装置との間に受給電接触器が設けられており、
前記切替器は、
前記受給電接触器が導通状態のまま、前記架線からの受電と前記蓄電装置の充電とを切り替え可能に形成されている、
請求項2又は請求項3記載の電気車用電源システム。 - 前記切替器は、
前記架線に接続される第1電極と、
前記蓄電装置に接続される第2電極と、
前記第1端子に接続される共通電極と、
を備え、
さらに、前記第2電極と前記共通電極との間に並列に接続され、前記蓄電装置を放電させる方向の電流を流す整流器
を備える、
請求項2から請求項4の何れか1項に記載の電気車用電源システム。 - 前記変換部は、互いに並列に接続することで並列同期運転が可能な複数の変換部を含む、
請求項2から請求項5の何れか1項に記載の電気車用電源システム。
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