JP6583431B2 - 燃料電池システム、及び、燃料電池システムの制御方法 - Google Patents
燃料電池システム、及び、燃料電池システムの制御方法 Download PDFInfo
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Description
図1は、本発明の第1実施形態における燃料電池システム10の主要構成を示す構成図である。
図5Aは、本発明の第2実施形態における燃料電池システム10の運転制御に関する処理手順例を示すフローチャートである。
Claims (10)
- アノードガス及びカソードガスが供給されると共に、負荷に応じて発電する固体酸化物型の燃料電池を備え、当該燃料電池へのガスの供給と発電を制御する燃料電池システムの制御方法であって、
前記負荷の大きさに応じて、前記燃料電池へと流れる前記アノードガス及び前記カソードガスの流量を制御する発電運転ステップと、
前記負荷が所定の値以下である場合には、前記燃料電池に自立運転を行わせる自立運転ステップと、を有し、
前記自立運転ステップは、
前記燃料電池に、所定の流量の前記アノードガス、及び、所定の流量の前記カソードガスを供給するガス供給ステップを有し、
前記ガス供給ステップにおいて、前記燃料電池に、前記燃料電池のカソード極の電位が維持される流量であって、前記アノードガスの全てが前記燃料電池内にて反応する流量の前記カソードガス、及び、前記燃料電池内において前記カソードガスのアノード電極への透過を抑制する流量の前記アノードガスを供給する、
燃料電池システムの制御方法。 - 請求項1に記載の燃料電池システムの制御方法であって、
前記自立運転ステップは、
前記燃料電池の電圧に応じて、前記アノードガスの流量を変化させる電圧維持ステップを、さらに有する、
燃料電池システムの制御方法。 - 請求項2に記載の燃料電池システムの制御方法であって、
前記電圧維持ステップにおいて、前記燃料電池の電圧が下限値を下回る場合には、前記燃料電池の電圧が上限値となるように、前記アノードガスの流量を増加させる、
燃料電池システムの制御方法。 - 請求項1から3のいずれか1項に記載の燃料電池システムの制御方法であって、
前記自立運転ステップは、
前記燃料電池の温度を、前記燃料電池が発電可能な温度範囲に維持する温度維持ステップを、さらに有する、
燃料電池システムの制御方法。 - 請求項4に記載の燃料電池システムの制御方法であって、
前記温度維持ステップは、
前記燃料電池の温度が下限値を下回る場合には、前記燃料電池を発電させて前記燃料電池から電力を供給させ、前記燃料電池の温度が上限値を上回る場合には、前記燃料電池の
発電を停止する、電力供給ステップを有する、
燃料電池システムの制御方法。 - 請求項5に記載の燃料電池システムの制御方法であって、
前記燃料電池システムは、補機をさらに有し、
前記電力供給ステップにおいて、前記燃料電池から前記補機に電力を供給する、
燃料電池システムの制御方法。 - 請求項5又は6に記載の燃料電池システムの制御方法であって、
前記電力供給ステップにおける前記カソードガスの流量は、前記発電運転ステップにおける前記カソードガスの流量よりも小さい、
燃料電池システムの制御方法。 - 請求項4に記載の燃料電池システムの制御方法であって、
前記燃料電池システムは、
前記燃料電池に前記カソードガスを供給する流路に設けられる起動燃焼器を、さらに有し、
前記温度維持ステップは、
前記起動燃焼器を起動させる起動燃焼ステップを有する、
燃料電池システムの制御方法。 - 請求項1から8のいずれか1項に記載の燃料電池システムの制御方法であって、
前記燃料電池システムは、
前記燃料電池から排出されるアノードオフガス及びカソードオフガスを混合し、該混合されたガスを燃焼させる排気燃焼器を、さらに有し、
前記自立運転ステップは、
前記排気燃焼器を起動させる排気燃焼ステップを、さらに有する、
燃料電池システムの制御方法。 - アノードガス及びカソードガスが供給される燃料電池と、
前記燃料電池に前記アノードガス及び前記カソードガスを供給するガス供給装置と、
前記燃料電池から電力を取り出してバッテリ又はモータに供給する電力制御器と、
前記燃料電池に要求される負荷に基づいて前記燃料電池の発電運転を実施する制御部と、を含む燃料電池システムであって、
前記制御部は、前記負荷が所定の値以下となった場合には、前記燃料電池システムから前記負荷への電力供給を停止し、前記ガス供給装置から前記燃料電池のアノードに前記燃料電池内において前記カソードガスのアノード電極への透過を抑制する流量の前記アノードガスを供給するとともに、前記燃料電池のカソードに前記燃料電池のカソード極の電位が維持される流量であって、前記アノードガスの全てが前記燃料電池内にて反応する流量の前記カソードガスを供給する、
燃料電池システム。
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JP6151174B2 (ja) | 2013-12-25 | 2017-06-21 | 三菱日立パワーシステムズ株式会社 | 燃料電池システムの停止方法および燃料電池システム |
JP5926866B2 (ja) | 2014-05-28 | 2016-05-25 | パナソニック株式会社 | 固体酸化物形燃料電池システム及びその停止方法 |
US10804554B2 (en) * | 2015-12-25 | 2020-10-13 | Nissan Motor Co., Ltd. | Fuel cell system and control method for fuel cell system |
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BR112018012918B1 (pt) | 2022-10-18 |
US10938044B2 (en) | 2021-03-02 |
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