JPS61233979A - Controller of fuel cell power generating plant - Google Patents
Controller of fuel cell power generating plantInfo
- Publication number
- JPS61233979A JPS61233979A JP60074324A JP7432485A JPS61233979A JP S61233979 A JPS61233979 A JP S61233979A JP 60074324 A JP60074324 A JP 60074324A JP 7432485 A JP7432485 A JP 7432485A JP S61233979 A JPS61233979 A JP S61233979A
- Authority
- JP
- Japan
- Prior art keywords
- reformer
- value
- flow rate
- oxygen concentration
- combustion chamber
- 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.)
- Pending
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
- H01M8/06—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
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- 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)
Abstract
Description
【発明の詳細な説明】
［発明の技術分野］
本発明は、燃料電池発電プラントの制御装置、特に改質
装置燃焼室における安定な燃焼状態を維持する燃料電池
発電プラントの制御装置に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a control device for a fuel cell power plant, and particularly to a control device for a fuel cell power plant that maintains a stable combustion state in a reformer combustion chamber. .
［発明の技術的背景とその問題点］
燃料電池発電プラントは、改質装置を介して原料ガスか
ら水素ガスを生成し、この水素ガスを電池本体に供給し
て電極反応を行なわせて再び改質装置を回収し、改質装
置燃焼室の燃料として利用する一連の構成を有している
。[Technical background of the invention and its problems] A fuel cell power generation plant generates hydrogen gas from raw material gas through a reformer, supplies this hydrogen gas to the cell body, causes an electrode reaction to occur, and then reforms the fuel cell again. It has a series of configurations in which the reformer is recovered and used as fuel for the reformer combustion chamber.
ここで前記改質装置燃焼室は、原料ガスから水素ガスを
生成するに際して必要な熱エネルギーを供給するために
有るもので、燃焼室バーナへの燃焼用空気と燃焼用燃料
の供給台によって熱エネルギーの供給量を制御する。上
記熱エネルギー供給量の制御に関する従来の構成例を以
下に記す。The reformer combustion chamber is provided to supply the thermal energy necessary to generate hydrogen gas from the raw material gas, and the combustion chamber burner is supplied with combustion air and combustion fuel to supply thermal energy. control the amount of supply. An example of a conventional configuration for controlling the amount of thermal energy supplied will be described below.
第３図は、従来の燃料極の流量制御構成のブロック図で
あり、これによって説明する。第３図において、１は負
荷（或いは電池電流値）、２は流量設定関数、３は負荷
に基づく流量指令値、４は改質装置反応室の上部や反応
室外側のメタル上部などの代表温度に対する設定値、５
は代表温度の検出値、６は両者温度の偏差信号、７は偏
差信号６に基づき前記流量指令値に対する設定流量補正
１ｉａ８を与える調節器である。FIG. 3 is a block diagram of a conventional fuel electrode flow control configuration, and will be explained using this diagram. In Figure 3, 1 is the load (or battery current value), 2 is the flow rate setting function, 3 is the flow rate command value based on the load, and 4 is the representative temperature of the upper part of the reformer reaction chamber or the upper part of the metal outside the reaction chamber. Setting value for 5
6 is a detected value of the representative temperature, 6 is a deviation signal between both temperatures, and 7 is a regulator that provides a set flow rate correction 1ia8 to the flow rate command value based on the deviation signal 6.
本実施例では、負荷１応じた流量指令値３に対し、改質
装置代表温度検出値５が改質装置代表温度設定値４にな
るように設定流量補正値８を加え、最終的な燃料極流量
指令値９を与える構成である。In this example, a set flow rate correction value 8 is added to the flow rate command value 3 corresponding to the load 1 so that the reformer representative temperature detected value 5 becomes the reformer representative temperature set value 4, and the final fuel electrode This configuration provides a flow rate command value of 9.
燃料極流量指令値９が与えられると、調節器３２では前
記燃料極流量指令値９と燃料極流量検出値３Ｇとの流量
偏差３１から、燃料極流量調節弁３４に対して開度指令
３３を与えることにより制御が行なわれる。When the fuel electrode flow rate command value 9 is given, the regulator 32 issues an opening command 33 to the fuel electrode flow rate control valve 34 based on the flow rate deviation 31 between the fuel electrode flow rate command value 9 and the fuel electrode flow rate detection value 3G. Control is achieved by giving
［背景技術の問題点］
上記構成を有する従来装置では、例えば改質装置代表温
度検出値５が低下した場合、燃料極流量指令値９は、設
定流量補正値（補正指令）８によって増加する。即ち、
改質装置代表温度検出値５を上昇させるために燃料極流
量を増加、つまり改質装置燃焼室の燃料流量を増加させ
るよう動作する。しかし、この場合、改質装置燃焼室へ
の燃焼用空気流量で決まる改質装置燃焼室バーナの空気
過剰率が低下し、これが時に改質装置燃焼室での不完全
燃焼に繋がる問題があった。[Problems with Background Art] In the conventional device having the above configuration, for example, when the detected reformer representative temperature value 5 decreases, the fuel electrode flow rate command value 9 increases by the set flow rate correction value (correction command) 8. That is,
In order to increase the reformer representative temperature detection value 5, the fuel electrode flow rate is increased, that is, the fuel flow rate in the reformer combustion chamber is increased. However, in this case, the air excess ratio of the reformer combustion chamber burner, which is determined by the flow rate of combustion air into the reformer combustion chamber, decreases, which sometimes leads to incomplete combustion in the reformer combustion chamber. .
［発明の目的］
本発明は上記問題点を解決するためになされたものであ
り、改質装置での空気過剰率の極度の低下及び不完全燃
焼を回避し得る燃料電池発電プラントの制御装置を提供
することを目的としている。[Object of the Invention] The present invention has been made to solve the above problems, and provides a control device for a fuel cell power plant that can avoid an extremely low excess air ratio and incomplete combustion in a reformer. is intended to provide.
［発明の概要］
本発明では、従来例で述べた燃料電池発電プラントの制
御装置において、改質装置燃焼室からの燃焼排ガス中の
酸素濃度を検出する手段と、その検出値に応じて前記燃
料極流量指令値９を変更する制御手段を設けたことを特
徴とするものである。[Summary of the Invention] In the present invention, in the control device for the fuel cell power generation plant described in the conventional example, there is provided a means for detecting the oxygen concentration in the combustion exhaust gas from the combustion chamber of the reformer, and a means for detecting the oxygen concentration in the combustion exhaust gas from the combustion chamber of the reformer. The present invention is characterized in that a control means for changing the extreme flow rate command value 9 is provided.
［発明の実施例］
以下図面を参照して実施例を説明する。第１図は、本発
明の一実施例を示すものである。図中の１〜９．３０〜
３４は第３図に対応している。１０は改質装置燃焼室排
ガス酸素濃度の下限設定値、１１は酸素濃度検出値、１
２は酸素濃度偏差である。酸素濃度偏差１２は、一つに
は関数発生器１１によって改質装置の代表温度制御部に
信号１８を与える。信号１８は、１２が正値、即ち、酸
素濃度検出値１１が下限設定値１０以下の場合Ｏ１負値
の場合１となる。又、酸素濃度偏差１２は、関数発生器
１３によって補正信号１４となり、更にこれが調節器１
５によって従来例における燃料極流量指令値９に対する
設定流山補正値（補正指令）１６を与える。関数発生器
１３は、偏差信号１２が負の場合は補正信号１４を０と
し、正の場合は１２の信号をそのまま１４の信号とする
関数である。即ち、本実施例は改質装置排ガス酸素濃度
がその下限値以下になった場合に、従来の改質装置代表
温度制御から、改質装置排ガス酸素濃度制御に切替わる
構成である。[Embodiments of the Invention] Examples will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention. 1 to 9.30 in the diagram
34 corresponds to FIG. 10 is the lower limit set value of the reformer combustion chamber exhaust gas oxygen concentration, 11 is the detected oxygen concentration value, 1
2 is the oxygen concentration deviation. The oxygen concentration deviation 12 provides a signal 18, in part by the function generator 11, to the representative temperature control section of the reformer. The signal 18 becomes 1 when 12 is a positive value, that is, when the detected oxygen concentration value 11 is less than or equal to the lower limit setting value 10 and when O1 is a negative value. Further, the oxygen concentration deviation 12 becomes a correction signal 14 by the function generator 13, which is further outputted to the regulator 1.
5 gives a set flow mountain correction value (correction command) 16 for the fuel electrode flow rate command value 9 in the conventional example. The function generator 13 is a function that sets the correction signal 14 to 0 when the deviation signal 12 is negative, and sets the signal 12 as the signal 14 when it is positive. That is, this embodiment is configured to switch from the conventional reformer representative temperature control to reformer exhaust gas oxygen concentration control when the reformer exhaust gas oxygen concentration becomes equal to or less than its lower limit.
次に本実施例の作用を説明する。改質装置排ガス酸素濃
度検出値１１が過渡に低下し、下限設定値１０以下にな
った場合、偏差信号１２は正値となる。Next, the operation of this embodiment will be explained. When the detected value 11 of the reformer exhaust gas oxygen concentration decreases transiently and becomes equal to or less than the lower limit set value 10, the deviation signal 12 becomes a positive value.
関数発生器１１は偏差信号１２が正値であるから信号１
８とし０を出力する。信号１８がＯの場合、改質装置の
温度偏差６は掛は算器１９によって０となり、これが補
正侵の温度偏差信号２０として、調節器７に入力される
。即ち、酸素濃度検出値１１が下限設定値１０以下にな
った場合、改質装置の温度偏差に基づく設定流量補正値
８を一定保持する作用をもたらす。Since the deviation signal 12 is a positive value, the function generator 11 generates a signal 1.
Outputs 8 and 0. When the signal 18 is O, the temperature deviation 6 of the reformer is multiplied by a multiplier 19 to 0, and this is input to the regulator 7 as a corrected temperature deviation signal 20. That is, when the detected oxygen concentration value 11 becomes equal to or lower than the lower limit set value 10, the set flow rate correction value 8 based on the temperature deviation of the reformer is held constant.
又、同様に偏差信号１２が正値となった場合、関数発生
器１３は偏差信号１２をそのまま補正信号１４として調
節器１５に入力し、更に調節器１５は従来の燃料極流量
指令値９に対する減指令１６を出力する。Similarly, when the deviation signal 12 becomes a positive value, the function generator 13 inputs the deviation signal 12 as it is as a correction signal 14 to the regulator 15, and the regulator 15 further inputs the deviation signal 12 as a correction signal 14 to the regulator 15. A reduction command 16 is output.
結果として、本実施例による燃料極流量指令値２１を減
少させるように作用する。As a result, it acts to reduce the fuel electrode flow rate command value 21 according to this embodiment.
要するに、本実施例では改質装置排ガス酸素濃度検出値
１１が下限設定値１０以下になった場合、従来の制御構
成における改質装置温度制御部の動作を一定に固定し、
前記酸素濃度検出値１１を高めるために補正信号１６に
て、燃料極流量指令値９を減少させるよう作用する。In short, in this embodiment, when the detected value 11 of the reformer exhaust gas oxygen concentration becomes equal to or lower than the lower limit set value 10, the operation of the reformer temperature control section in the conventional control configuration is fixed to a constant value,
In order to increase the detected oxygen concentration value 11, the correction signal 16 acts to decrease the fuel electrode flow rate command value 9.
なお、前記酸素濃度検出値１１が下限設定値１０より大
きい場合、即ち、偏差信号１２が負値の場合は、温度偏
差補正信号１８は１となり、又、設定流山補正値１６は
一定となるから従来の構成と同様の作用をもたらす。Note that when the oxygen concentration detection value 11 is larger than the lower limit setting value 10, that is, when the deviation signal 12 is a negative value, the temperature deviation correction signal 18 becomes 1 and the set flow mountain correction value 16 becomes constant. It provides the same effect as the conventional configuration.
本実施例に伴なう上記作用は、改質装置燃焼室からの排
ガス中の酸素濃度が極度に低下した場合に、Ｉ料極流母
指令値９を下げ方向に補正するこトニヨリ、前記濃度低
下を防ぐ効果が、即ち、改１［置燃焼室における空気過
剰率の極度の低下及び不完全燃焼を防止する効果がもた
らされる。The above-mentioned action accompanying this embodiment is such that when the oxygen concentration in the exhaust gas from the reformer combustion chamber is extremely reduced, the I-material polar flow mother command value 9 is corrected in a downward direction. In other words, the effect of preventing the excessive air ratio in the combustion chamber from being excessively reduced and incomplete combustion is brought about.
第２図は、本発明の他の実施例を示す構成図である。図
中の１〜１６．２０．２１．３０〜３４は第１図に対応
している。２２は関数発生器で、偏差信号１２が正値の
時は０′・□を、負値の時は比較的絶対値の大きな正値
を温度偏差補正信号２３として発生する。２４は偏差信
号６と補正信号２３の低値優先回路である。FIG. 2 is a configuration diagram showing another embodiment of the present invention. 1-16, 20, 21, 30-34 in the figure correspond to FIG. A function generator 22 generates 0'.□ when the deviation signal 12 has a positive value, and generates a positive value with a relatively large absolute value when the deviation signal 12 has a negative value as the temperature deviation correction signal 23. 24 is a low value priority circuit for the deviation signal 6 and the correction signal 23.
本実施例では酸素濃度検出値１１が下限設定値１０以下
になり、偏差信号１２が正値となった場合、補正信号２
３はＯとなり、低値優先回路２４によって調節器７への
入力２０の上限はＯ１即ち、信号８の増加作用のみを断
ち切る作用をもたらす。改質装置代表温度検出値５が過
渡に上昇した場合に起こる信号８の減少動作は従来例と
変わらず作用する。In this embodiment, when the detected oxygen concentration value 11 becomes below the lower limit set value 10 and the deviation signal 12 becomes a positive value, the correction signal 2
3 becomes O, and the upper limit of the input 20 to the regulator 7 is set to O1 by the low value priority circuit 24, ie the effect of cutting off only the increasing effect of the signal 8. The reduction operation of the signal 8 that occurs when the reformer representative temperature detection value 5 rises transiently operates in the same manner as in the conventional example.
又、偏差信号１２が負値の場合、補正信号２３は絶対値
の大きな正値となるから低値優先回路２４から出力され
る信＠２０は温度偏差６と同じものとなり、これも従来
例と同様の作用をもたらす。なお、偏差信号１２から設
定流山補正値１６への作用は、前記した実施例と同じで
ある。Furthermore, when the deviation signal 12 has a negative value, the correction signal 23 has a large positive value, so the signal @20 output from the low value priority circuit 24 is the same as the temperature deviation 6, which is also the same as the conventional example. It has a similar effect. Note that the effect of the deviation signal 12 on the set drift mountain correction value 16 is the same as in the embodiment described above.
本実施例も、前記実施例同様、改質装置燃焼室における
空気過剰率の極度低下及び不完全燃焼を防止する効果が
もたらされる。但し、酸素濃度検出値１１が下限設定値
１０１！下になった場合、前記した実施例では、改質装
置の代表温度制御部の動作がホールドされるのに対し、
本実施例では温度制御部の設定流量補正値（補正指令）
８の増加動作のみ制限されるが減少動作は行なわれる。As with the previous embodiments, this embodiment also brings about the effect of extremely reducing the excess air ratio in the combustion chamber of the reformer and preventing incomplete combustion. However, the detected oxygen concentration value 11 is the lower limit set value 101! In the above-mentioned embodiment, the operation of the typical temperature control section of the reformer is held when the
In this example, the set flow rate correction value (correction command) of the temperature control section
Only the increase operation of 8 is restricted, but the decrease operation is performed.
［発明の効果］
以上説明した如く、本発明によれば負荷変化時、特に改
質装置の代表温度が低下した場合に、改質装置燃焼室で
の空気過剰率の極度の低下及び不完全燃焼が起こるよう
な従来の問題点に対して、空気過剰率の指標となる改質
装置燃焼室排ガス中の酸素濃度によって燃料極流層を制
御するようにしたので、前記問題点を解消し改質装置燃
焼室での燃焼状態をより安定にだもつことが可能となる
。[Effects of the Invention] As explained above, according to the present invention, when the load changes, especially when the typical temperature of the reformer decreases, the excess air ratio in the reformer combustion chamber decreases significantly and incomplete combustion occurs. The fuel electrode flow layer is controlled by the oxygen concentration in the reformer combustion chamber exhaust gas, which is an indicator of excess air ratio, which solves the problem and improves reforming efficiency. It becomes possible to maintain a more stable combustion state in the combustion chamber of the device.
第１図は本発明による燃料電池発電プラントの制御装置
の実施例の構成図、第２図は本発明による燃料電池発電
プラントの制御装置の他の実施例の構成図、第３図は従
来の燃料電池発電プラントの制御装置の構成図である。
１・・・負荷 ２・・・流［Ｉ設定関数３
・・・流量指令値
４・・・改質装置代表温度設定値
５・・・改質装置代表温度検出値
６．２０・・・温度偏差信号 ７．１５．３２・・・調
節器８．１６・・・設定流量補正値
９．２１・・・燃料極流量指令値
１０・・・下限設定値 １１・・・酸素濃度検出
値１２．１４・・・酸素濃度偏差（補正後）１３．１１
．２２・・・関数発生器
１８．２３・・・温度偏差補正信号
１９・・・掛は算器 ２４・・・低値優先回路
３０・・・燃料極流ｍ検出値 ３１・・・流量偏差３３
・・・開度指令 ３４・・・燃料極流量調節弁
（７３１７）代理人 弁理士 則近憲佑（他１名）
鬼１区
兇２図
１１股素！！夷塗土価FIG. 1 is a block diagram of an embodiment of the control device for a fuel cell power plant according to the present invention, FIG. 2 is a block diagram of another embodiment of the control device for a fuel cell power plant according to the present invention, and FIG. 3 is a block diagram of a conventional control device for a fuel cell power plant. FIG. 1 is a configuration diagram of a control device for a fuel cell power generation plant. 1...Load 2...Flow [I setting function 3
...Flow rate command value 4...Reformer representative temperature setting value 5...Reformer representative temperature detection value 6.20...Temperature deviation signal 7.15.32...Adjuster 8.16 ... Set flow rate correction value 9.21 ... Fuel electrode flow rate command value 10 ... Lower limit set value 11 ... Oxygen concentration detection value 12.14 ... Oxygen concentration deviation (after correction) 13.11
．． 22... Function generator 18. 23... Temperature deviation correction signal 19... Multiplication calculator 24... Low value priority circuit 30... Fuel electrode flow m detection value 31... Flow rate deviation 33
...Opening command 34...Fuel electrode flow rate control valve (7317) Agent Patent attorney Norichika Kensuke (and 1 other person) Demon 1 ward 2 diagram 11 elements! ! Einuri soil price
Claims (1)
えて、改質装置からの改質ガスの流量を制御する燃料電
池発電プラントの制御装置において、前記改質装置の燃
焼排ガス中の酸素濃度を検出し、前記酸素濃度検出値に
基づく流量指令値を、前記改質装置代表温度による流量
指令値に加えることを特徴とする燃料電池発電プラント
の制御装置。In a control device for a fuel cell power plant that controls the flow rate of reformed gas from a reformer by giving a flow rate command value such that the representative temperature of the reformer becomes a set value, A control device for a fuel cell power generation plant, characterized in that the control device detects an oxygen concentration and adds a flow rate command value based on the detected oxygen concentration value to a flow rate command value based on the reformer representative temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60074324A JPS61233979A (en) | 1985-04-10 | 1985-04-10 | Controller of fuel cell power generating plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60074324A JPS61233979A (en) | 1985-04-10 | 1985-04-10 | Controller of fuel cell power generating plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61233979A true JPS61233979A (en) | 1986-10-18 |
Family
ID=13543816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60074324A Pending JPS61233979A (en) | 1985-04-10 | 1985-04-10 | Controller of fuel cell power generating plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61233979A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0393694A2 (en) * | 1989-04-21 | 1990-10-24 | International Fuel Cells Corporation | Fuel cell power plant |
| WO1991006987A1 (en) * | 1989-10-24 | 1991-05-16 | International Fuel Cells Corporation | Fuel cell power plant fuel control |
| JP2010211993A (en) * | 2009-03-09 | 2010-09-24 | Toyota Motor Corp | Fuel cell system and control method of fuel cell system |
| US20130130138A1 (en) * | 2011-04-26 | 2013-05-23 | Panasonic Corporation | Hydrogen generation apparatus, fuel cell system, and method of operating the same |
-
1985
- 1985-04-10 JP JP60074324A patent/JPS61233979A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0393694A2 (en) * | 1989-04-21 | 1990-10-24 | International Fuel Cells Corporation | Fuel cell power plant |
| WO1991006987A1 (en) * | 1989-10-24 | 1991-05-16 | International Fuel Cells Corporation | Fuel cell power plant fuel control |
| EP0508991A1 (en) * | 1989-10-24 | 1992-10-21 | United Fuel Cells Corp | Fuel cell power plant fuel control. |
| JP2010211993A (en) * | 2009-03-09 | 2010-09-24 | Toyota Motor Corp | Fuel cell system and control method of fuel cell system |
| US20130130138A1 (en) * | 2011-04-26 | 2013-05-23 | Panasonic Corporation | Hydrogen generation apparatus, fuel cell system, and method of operating the same |
| US9116528B2 (en) * | 2011-04-26 | 2015-08-25 | Panasonic Intellectual Property Management Co., Ltd. | Hydrogen generation apparatus, fuel cell system, and method of operating the same |
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