JPH0795446B2 - Fuel cell power generation system - Google Patents
Fuel cell power generation systemInfo
- Publication number
- JPH0795446B2 JPH0795446B2 JP62229476A JP22947687A JPH0795446B2 JP H0795446 B2 JPH0795446 B2 JP H0795446B2 JP 62229476 A JP62229476 A JP 62229476A JP 22947687 A JP22947687 A JP 22947687A JP H0795446 B2 JPH0795446 B2 JP H0795446B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- flow rate
- pressure
- fuel cell
- power generation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04425—Pressure; Ambient pressure; Flow at auxiliary devices, e.g. reformers, compressors, burners
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04537—Electric variables
- H01M8/04604—Power, energy, capacity or load
- H01M8/04619—Power, energy, capacity or load of fuel cell stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04776—Pressure; Flow at auxiliary devices, e.g. reformer, compressor, burner
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
- H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は燃料電池（FC）発電システムに係り、特にFCに
燃料ガスを供給する燃料系の圧力流量制御機能を備えた
燃料電池発電システムに関する。The present invention relates to a fuel cell (FC) power generation system, and more particularly, to a pressure flow rate control function of a fuel system for supplying fuel gas to FC. The present invention relates to a fuel cell power generation system.
（従来の技術） この種のFC発電システムの燃料系を第４図に示す。この
システムには、一般に天然ガスを原燃料として外部から
供給し、水蒸気を混合して改質器１に導き水素を主成分
とする燃料ガスに変換する。この燃料ガスを負荷に応じ
てFC4に供給する。さらにFC4から排出された燃料非ガス
を改質器の燃焼室11に導き、燃焼させ改質反応に要する
熱源として用いる。(Prior Art) Fig. 4 shows a fuel system of this type of FC power generation system. In this system, generally, natural gas is supplied as a raw fuel from the outside, steam is mixed and introduced into the reformer 1 to be converted into a fuel gas containing hydrogen as a main component. This fuel gas is supplied to FC4 according to the load. Further, the fuel non-gas discharged from FC4 is guided to the combustion chamber 11 of the reformer and burned to be used as a heat source required for the reforming reaction.
FC発電システムには高速負荷追従性が要求されており、
負荷に応じて応答性良く燃料ガス供給流量を変え、また
改質反応をすみやかに行わしめるため、改質器反応管内
の燃料ガス圧を一定に制御する必要がある。これに対し
従来の圧力流量制御装置は、負荷電流によりスケジュー
リングされた圧力目標値と圧力計５の信号の差にもとず
き、PI動作を持つ調節計6hにより改質器反応管内圧力を
調節弁2aを駆動して制御し、またFCに供給する燃料流量
は、負荷電流によりスケジューリングされた流量目標値
と流量計3bの信号の差にもとずきPI動作を持つ調節計6i
により、調節弁2bを駆動して制御していた。The FC power generation system is required to have high-speed load followability,
In order to change the fuel gas supply flow rate with good responsiveness according to the load and to promptly carry out the reforming reaction, it is necessary to control the fuel gas pressure in the reformer reaction tube to be constant. On the other hand, the conventional pressure flow control device adjusts the pressure in the reformer reaction tube by the controller 6h having a PI operation based on the difference between the pressure target value scheduled by the load current and the signal of the pressure gauge 5. The fuel flow rate that drives and controls the valve 2a and that is supplied to the FC is based on the difference between the flow rate target value scheduled by the load current and the signal from the flow meter 3b.
The control valve 2b was driven and controlled by.
しかし、上記圧力流量制御系では、圧力の調節弁2aの開
度変化が圧力を変えるのみでなく、燃料の流量にも大き
く影響を及ぼす。また、流量の調節弁2bの開度変化は流
量のみでなく、圧力にも大きく影響を及ぼし、改質反応
に悪影響が出る上に、燃料系全体の安定性を損ねてい
た。このため従来、高速な負荷変化要求に応えることが
できなかった。However, in the pressure flow control system described above, not only the change in the opening degree of the pressure control valve 2a changes the pressure, but also the flow rate of fuel is greatly affected. Further, a change in the opening degree of the flow rate control valve 2b has a large effect not only on the flow rate but also on the pressure, which adversely affects the reforming reaction and impairs the stability of the entire fuel system. Therefore, conventionally, it has not been possible to meet a high-speed load change request.
（発明が解決しようとする問題点） 上記の如く、従来のFC発電システム燃料系の圧力流量制
御系では２制御弁の操作が互いに干渉していたので、圧
力を一定に保持した状態で燃料の流量を迅速に変化させ
ることができなかった。この結果、FC発電システムに要
求されている高速負荷応答性を満たすことができなかっ
た。(Problems to be Solved by the Invention) As described above, in the pressure flow rate control system of the conventional FC power generation system fuel system, the operations of the two control valves interfered with each other, so that fuel pressure was kept constant. The flow rate could not be changed quickly. As a result, it was not possible to satisfy the high-speed load response required for the FC power generation system.
本発明は、上記不具合を取り除くためなされたものであ
り、高速な負荷要求に応じ燃料流量を変え、かつ圧力を
安定に保持することのできるFC発電システムを提供する
ものである。The present invention has been made in order to eliminate the above-described problems, and provides an FC power generation system capable of changing the fuel flow rate in response to a high-speed load request and stably maintaining the pressure.
（問題点を解決するための手段） 上述の目的を達成するために、本発明は、水素リッチガ
スを還元剤として用いる燃料電池と原燃料を水素リッチ
ガスに変換する改質器を備えた燃料電池発電システムに
おいて、改質器の上流側の燃料ライン上に設けられた第
１の燃料調節弁と、燃料電池の上流側の燃料ライン上に
設けられた第２の燃料調節弁と、改質器に供給される燃
料流量を測定する第１の流量計と、燃料電池に供給され
る燃料流量と測定する第２の流量計と、第１および第２
の燃料調節弁間の燃料ラインの圧力を測定する圧力計
と、燃料ラインの圧力の目標値，燃料電池の供給燃料流
量の目標値，圧力計からの信号，第２の流量計からの信
号をそれぞれ入力し、改質器に供給される燃料流量（F
1）指令値と燃料電池に供給される燃料流量（F2）指令
値を出力する非干渉制御装置と、F1指令値，第１の流量
計からの信号をそれぞれ入力し、第１の燃料調節弁に開
度指令値を出力する第１の調節計と、F2指令値，第２の
流量計からの信号をそれぞれ入力し、第２の燃料調節弁
に開度指令値を出力する第２の調節計と、を具備したこ
とを特徴としている。(Means for Solving Problems) In order to achieve the above-mentioned object, the present invention provides a fuel cell power generation including a fuel cell using hydrogen-rich gas as a reducing agent and a reformer for converting raw fuel into hydrogen-rich gas. In the system, the first fuel control valve provided on the fuel line upstream of the reformer, the second fuel control valve provided on the fuel line upstream of the fuel cell, and the reformer A first flow meter for measuring the supplied fuel flow rate, a second flow meter for measuring the supplied fuel flow rate to the fuel cell, and first and second
A pressure gauge for measuring the pressure of the fuel line between the fuel control valves, and a target value of the pressure of the fuel line, a target value of the fuel cell supplied fuel flow rate, a signal from the pressure gauge, and a signal from the second flow meter. The fuel flow rate (F
1) A non-interference control device that outputs a command value and a fuel flow rate (F2) command value to be supplied to the fuel cell, an F1 command value, and a signal from the first flow meter, respectively, and the first fuel control valve A second controller that inputs the signal from the F2 command value and the second flow meter respectively to the first controller that outputs the opening command value to the second fuel output valve and outputs the opening command value to the second fuel control valve It is characterized by having a total and.
（作用） 本発明は、流量信号と目標値にもとづき弁を制御する下
段の調節計と、この下段の調節計に流量目標値を与える
非干渉制御装置から成るカスケード制御系を採用してい
る。下段の調節計は、弁の開度−流量特性の非線形性を
補償する働きを持つ。これにより、上位の制御装置は圧
力と流量の間の線形関係だけを扱えば良いことになる。
上位の制御装置はさらに、圧力目標値変化に対しては圧
力のみを、流量目標値変化に対しては流量のみ変わるよ
うに、F1とF2の指令値を出す非干渉制御装置であり、負
荷変化要求に対応して燃料系圧力を安定に保持したま
ま、迅速に燃料流量を変えることができる。(Operation) The present invention employs a cascade control system including a lower controller for controlling the valve based on the flow rate signal and the target value, and a non-interfering controller that gives the target controller the flow target value. The lower controller has a function of compensating for the non-linearity of the valve opening-flow rate characteristic. This allows the host controller to handle only the linear relationship between pressure and flow rate.
Further, the higher-order control device is a non-interference control device that issues command values of F 1 and F 2 so that only the pressure changes with respect to the pressure target value change, and only the flow rate changes with respect to the flow rate target value change. It is possible to rapidly change the fuel flow rate while keeping the fuel system pressure stable in response to a load change request.
（実施例） 本発明の一実施例について、図面に従い詳細に説明す
る。本発明の一実施例の概略構成を第１図に示す。FC発
電プラントの燃料系圧力と流量を制御するため、本実施
例では改質器１上流側に調節弁2aと流量計3aを設け、ま
たFC4上流側に調節弁2bと流量計3bおよび圧力計５を設
ける。また、負荷信号と圧力計５の信号と流量計3bの信
号を入力して、PI調節計6aと6bに流量指令値を出力する
非干渉制御装置７を設ける。PI調節計6a,6bは前述の流
量指令値と対応する流量信号を入力して、弁2aと2bに関
度指令値を出力する。また、改質反応に必要な水蒸気を
改質器に供給するため、原燃料流量に応じて調節弁2cと
PI調節計6cを用いて水蒸気流量を制御する。Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. A schematic configuration of one embodiment of the present invention is shown in FIG. In order to control the fuel system pressure and flow rate of the FC power plant, in this embodiment, a control valve 2a and a flow meter 3a are provided on the upstream side of the reformer 1, and a control valve 2b, a flow meter 3b and a pressure meter are provided on the upstream side of FC4. 5 is provided. Further, a non-interference control device 7 is provided which inputs a load signal, a signal from the pressure gauge 5 and a signal from the flowmeter 3b and outputs a flow rate command value to the PI controllers 6a and 6b. The PI controllers 6a and 6b input the flow rate signal corresponding to the above-mentioned flow rate command value, and output the engagement command value of the valves 2a and 2b. Further, since the steam required for the reforming reaction is supplied to the reformer, the control valve 2c and
The steam flow rate is controlled using the PI controller 6c.
この非干渉制御器７の構成を第２図に示す。本装置は負
荷信号を受け取り、スケジューリングカーブに従い、圧
力目標値と流量目標値を出力する目標値演算器8a,8b
と、前記の目標値と圧力と流量の信号を入力し、その差
を用いて改質器への燃料流量指令値とFCへの燃料流量指
令値を演算する４個のPI演算装置6d,6e,6f,6gから構成
される。燃料電池により発電する際、水素を主成分とす
る燃料ガスをアノードに、また空気をカソードに供給す
る。アノードとカソードとの間の耐圧性は高くないの
で、燃料ガスと空気の圧力は通常等しくなるように制御
されている。カソードへの空気供給はコンプレッサなど
によって行われるが、経済性を考慮した場合にはこの圧
力を負荷に応じて変化させることが望ましい。そしてこ
の変化に応じて燃料ガスの圧力も変化させることが好ま
しいので、結果として、負荷信号に応じて燃料ガスの圧
力目標値を変化させている。PI演算装置6d,6e,6f,6gの
制御定数は本制御系が非干渉制御となるよう、計測自動
制御学会論文集Vol.16,No.1,p139〜p140に記載されたア
ルゴリズムにより決定した。The structure of the non-interference controller 7 is shown in FIG. This device receives the load signal and outputs the target pressure value and the target flow rate value according to the scheduling curve.
And the above target value, pressure and flow rate signals are input, and using the differences, four PI computing units 6d, 6e for computing the fuel flow rate command value to the reformer and the fuel flow rate command value to FC , 6f, 6g. When power is generated by a fuel cell, fuel gas containing hydrogen as a main component is supplied to the anode and air is supplied to the cathode. Since the pressure resistance between the anode and the cathode is not high, the pressures of the fuel gas and the air are usually controlled to be equal. Air is supplied to the cathode by a compressor or the like, but it is desirable to change this pressure according to the load in consideration of economy. Since it is preferable to change the pressure of the fuel gas according to this change, as a result, the target pressure value of the fuel gas is changed according to the load signal. The control constants of the PI computing devices 6d, 6e, 6f, 6g were determined by the algorithm described in the Society of Instrument and Control Engineers Vol. .
本実施例と第４図に示した従来制御系の負荷応答時の制
御性能を第３図に示す。第３図（ａ）は負荷電流の時間
変化を示し、第３図（ｂ）はその時の燃料系改質器反応
管内圧力の応答を示し、FC入口燃料流量応答を第３図
（ｃ）に示す。9aが本実施例の圧力応答、10aが流量応
答であり、9bが従来系の圧力応答、10bが流量応答であ
る。また、図中6d,6e,6f,6gはPI制御演算要素であり、
それぞれ比例ゲインと積分器を有する。ここでPI制御演
算要素6dは、圧力目標値を実現するために調節弁2a,2c
を制御する。FIG. 3 shows the control performance during load response of the present embodiment and the conventional control system shown in FIG. Fig. 3 (a) shows the change over time of the load current, Fig. 3 (b) shows the response of the pressure in the fuel system reformer reaction tube at that time, and the FC inlet fuel flow rate response is shown in Fig. 3 (c). Show. 9a is the pressure response of this embodiment, 10a is the flow rate response, 9b is the pressure response of the conventional system, and 10b is the flow rate response. Further, 6d, 6e, 6f, 6g in the figure are PI control operation elements,
Each has a proportional gain and an integrator. Here, the PI control calculation element 6d is configured to control valves 2a and 2c in order to realize the pressure target value.
To control.
第３図に示した例では、負荷の増加により圧力目標値が
少し下降しているため、その分だけ弁の開度を小さくす
るように指示する。一方、流量目標値は大幅に上昇した
ので、PI制御演算要素6gは弁2bを大きく開くように指示
する。しかしながらこれだけでは圧力が低下してしまう
ため、それを補償するために弁2a,2cを開くようにPI制
御演算要素6fが指示を行う。この例では圧力変化が大き
くないため、PI制御演算要素6eの動作はそれ程大きくな
い。In the example shown in FIG. 3, the target pressure value is slightly decreasing due to an increase in load, and therefore the instruction is made to reduce the opening degree of the valve accordingly. On the other hand, since the flow rate target value has increased significantly, the PI control computing element 6g instructs the valve 2b to open wide. However, since this alone causes the pressure to drop, the PI control computing element 6f instructs the valves 2a and 2c to open in order to compensate for it. In this example, since the pressure change is not large, the operation of the PI control calculation element 6e is not so large.
このように、流量目標値が変化すれば、圧力に影響を与
えることなく流量のみを変化させることができる。ま
た、圧力目標値の変化に対しても同様に、流量に影響を
与えることなく圧力のみを変化させることができる。こ
れに対して従来の制御方式では、圧力を変化させれば流
量に、流量を変化させれば圧力に影響が出るため、第３
図に示されるように流量変化によって圧力が大きく下が
ってしまう。Thus, if the flow rate target value changes, only the flow rate can be changed without affecting the pressure. Further, similarly to the change of the target pressure value, only the pressure can be changed without affecting the flow rate. On the other hand, in the conventional control method, if the pressure is changed, the flow rate is affected, and if the flow rate is changed, the pressure is affected.
As shown in the figure, the pressure greatly drops due to the change in the flow rate.
このように圧力と流量の追従性を大幅に向上させること
ができる。In this way, the followability of pressure and flow rate can be greatly improved.
以上詳述した如く、本発明によりFC発電プラントの燃料
系の圧力と流量を安定に、かつ目標値追従性良く制御す
ることができる。燃料系の圧力は発電プラント全体の基
準圧の働きを持つので、本発明による圧力の安定化はシ
ステム全体の安定にも大きく寄与する。特に、FCはカソ
ード・アノード間圧力差に敏感で常時小さく保持する必
要があるが、本発明によるアノード圧の安定化は、FC発
電システムでは通常カソードへ供給する空気が、アノー
ド排燃料の燃焼ガスによりターボコンプレッサーを用い
加圧されていることから、カソード空気圧の安定化にも
つながり、極間圧力差を小さく保つ効果を持つ。As described above in detail, according to the present invention, the pressure and flow rate of the fuel system of the FC power plant can be controlled stably and with good target value followability. Since the pressure of the fuel system acts as a reference pressure of the entire power plant, the stabilization of the pressure according to the present invention greatly contributes to the stability of the entire system. In particular, FC is sensitive to the pressure difference between the cathode and the anode and must be kept small at all times, but the stabilization of the anode pressure according to the present invention is that in the FC power generation system, the air normally supplied to the cathode is the combustion gas of the anode exhaust fuel. Since it is pressurized using a turbo compressor, it also stabilizes the cathode air pressure and has the effect of keeping the pressure difference between the electrodes small.
第１図は、本発明のFC発電システムの一実施例を示す構
成図、第２図は、本発明に用いる非干渉制御装置の一実
施例のブロック図、第３図は、負荷電流変化に対する本
発明の実施例と従来例の応答図、第４図は、従来のFC発
電システムの構成図である。 １……改質器、２……調節弁、３……流量計、４……F
C、５……圧力計、６……PI調節計、７……非干渉制御
器、８……演算器、9a……本発明の実施例による負荷変
化に対する燃料系圧力応答、9b……従来例による負荷変
化に対する燃料系圧力応答、10a……本発明の実施例に
よる負荷変化に対する燃料流量応答、10b……従来例に
よる負荷変化に対する燃料系流量応答。FIG. 1 is a block diagram showing an embodiment of an FC power generation system of the present invention, FIG. 2 is a block diagram of an embodiment of a non-interference control device used in the present invention, and FIG. FIG. 4 is a configuration diagram of a conventional FC power generation system, and FIG. 4 is a response diagram of an embodiment of the present invention and a conventional example. 1 ... Reformer, 2 ... Control valve, 3 ... Flow meter, 4 ... F
C, 5 ... pressure gauge, 6 ... PI controller, 7 ... non-interference controller, 8 ... arithmetic unit, 9a ... fuel system pressure response to load change according to the embodiment of the present invention, 9b ... conventional Fuel system pressure response to load change according to an example, 10a ... Fuel flow rate response to load change according to an embodiment of the present invention, 10b ... Fuel system flow rate response to load change according to a conventional example.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−135067（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-61-135067 (JP, A)
Claims (2)
電池と原燃料を水素リッチガスに変換する改質器を備え
た燃料電池発電システムにおいて、 前記改質器の上流側の燃料ライン上に設けられた第１の
燃料調節弁と、 前記燃料電池の上流側の燃料ライン上に設けられた第２
の燃料調節弁と、 前記改質器に供給される燃料流量を測定する第１の流量
計と、 前記燃料電池に供給される燃料流量を測定する第２の流
量計と、 前記第１および第２の燃料調節弁間の燃料ラインの圧力
を測定する圧力計と、 前記燃料ラインの圧力の目標値，前記燃料電池の供給燃
料流量の目標値，前記圧力計からの信号，前記第２の流
量計からの信号をそれぞれ入力し、前記改質器に供給さ
れる燃料流量（F1）指令値と前記燃料電池に供給される
燃料流量（F2）指令値を出力する非干渉制御装置と、 前記F1指令値，前記第１の流量計からの信号をそれぞれ
入力し、前記第１の燃料調節弁に開度指令値を出力する
第１の調節計と、 前記F2指令値，前記第２の流量計からの信号をそれぞれ
入力し、前記第２の燃料調節弁に開度指令値を出力する
第２の調節計と、 を具備したことを特徴とする燃料電池発電システム。1. A fuel cell power generation system comprising a fuel cell using hydrogen-rich gas as a reducing agent and a reformer for converting raw fuel into hydrogen-rich gas, the fuel cell power generation system being provided on a fuel line upstream of the reformer. A first fuel control valve; and a second fuel control valve provided on an upstream fuel line of the fuel cell
Fuel control valve, a first flow meter for measuring a fuel flow rate supplied to the reformer, a second flow meter for measuring a fuel flow rate supplied to the fuel cell, and the first and the second flow meters. A pressure gauge for measuring the pressure of the fuel line between the two fuel control valves; a target value of the pressure of the fuel line, a target value of the flow rate of fuel supplied to the fuel cell, a signal from the pressure gauge, and the second flow rate. A non-interference control device that inputs a signal from a meter and outputs a fuel flow rate (F1) command value supplied to the reformer and a fuel flow rate (F2) command value supplied to the fuel cell; A first controller that inputs a command value and a signal from the first flow meter and outputs an opening command value to the first fuel control valve, the F2 command value, and the second flow meter. Signal from each of them to output an opening degree command value to the second fuel control valve. Fuel cell power generation system characterized by comprising a 2 of the controller, a.
いはPID動作を行う機能を有することを特徴とする特許
請求の範囲第１項記載の燃料電池発電システム。2. The fuel cell power generation system according to claim 1, wherein the first and second controllers have a function of performing a P-I or PID operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62229476A JPH0795446B2 (en) | 1987-09-16 | 1987-09-16 | Fuel cell power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62229476A JPH0795446B2 (en) | 1987-09-16 | 1987-09-16 | Fuel cell power generation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6476675A JPS6476675A (en) | 1989-03-22 |
| JPH0795446B2 true JPH0795446B2 (en) | 1995-10-11 |
Family
ID=16892774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62229476A Expired - Lifetime JPH0795446B2 (en) | 1987-09-16 | 1987-09-16 | Fuel cell power generation system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0795446B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116487651A (en) * | 2023-05-16 | 2023-07-25 | 深圳氢时代新能源科技有限公司 | Fuel cell voltage cascade control method, device, equipment and storage medium |
-
1987
- 1987-09-16 JP JP62229476A patent/JPH0795446B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6476675A (en) | 1989-03-22 |
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