JPS6185775A - Fuel battery power generating system - Google Patents
Fuel battery power generating systemInfo
- Publication number
- JPS6185775A JPS6185775A JP59205542A JP20554284A JPS6185775A JP S6185775 A JPS6185775 A JP S6185775A JP 59205542 A JP59205542 A JP 59205542A JP 20554284 A JP20554284 A JP 20554284A JP S6185775 A JPS6185775 A JP S6185775A
- Authority
- JP
- Japan
- Prior art keywords
- fuel cell
- voltage
- fuel battery
- electric heater
- 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.)
- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- 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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
-
- 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)
Abstract
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明は、燃料電池発電システムに関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to a fuel cell power generation system.
第２図に、燃料電池発電システムの概略回路構成を示す
。１は燃料電池で多数のセル２を直列接続してなシ、酸
素３、水素４が供給され化学反応によ）直流電力を発電
する。この直流電力は、直流しゃ断器５を介して、イン
バータ６で交Ｒ底力に変換して電力系統１０に供給され
る。また１１は燃料電池内の反応による発熱を除去する
ための冷却水を供給する気水分離器でろる。この気水分
離器１１によシ供給される蒸気は改質器１３に送られ、
原燃料１４の改質に使用され、燃料電池１の燃料でろる
水素を主体とし、残りの大部分が二酸化炭素である改質
ガスに変成される。一方起動時には、燃料電池の発熱が
少ないため前記蒸気を発生するため前記気水分離器１１
には電気ヒータ１２を内蔵している。又、電気ヒータ１
２は燃料電池の発熱が少ない、部分負荷時にも使用され
る。FIG. 2 shows a schematic circuit configuration of the fuel cell power generation system. Reference numeral 1 is a fuel cell, in which a large number of cells 2 are connected in series, oxygen 3 and hydrogen 4 are supplied, and direct current power is generated (through a chemical reaction). This DC power is converted into AC R power by an inverter 6 via a DC breaker 5, and then supplied to the power system 10. Further, numeral 11 is a steam/water separator that supplies cooling water to remove heat generated by reactions within the fuel cell. The steam supplied by the steam-water separator 11 is sent to the reformer 13,
It is used for reforming the raw fuel 14 and is converted into a reformed gas that is mainly composed of hydrogen and the rest is mostly carbon dioxide. On the other hand, at startup, the steam-water separator 11 generates the steam because the fuel cell generates little heat.
has a built-in electric heater 12. Also, electric heater 1
Type 2 is also used during partial load when the fuel cell generates less heat.
７は、公知の電圧抑制回路で、直流開閉器８と抵抗器９
の直列回路を、燃料電池１の直流出力端と並列に接続し
ている。7 is a known voltage suppression circuit, which includes a DC switch 8 and a resistor 9.
A series circuit is connected in parallel with the DC output terminal of the fuel cell 1.
第３図を用いて、電圧抑制回路の動作を説明する。第３
図は、発電開始から、インバータロ起動までの間の燃料
電池出力電圧の過渡時の変化を表わしている。ｂま直流
しゃ断器５および直流開閉４８を開いた状態で燃料電池
１に、酸素、水素の供給を開始し、酸素ガスと水素ガス
の差圧を許容値内に保ちながら、それぞれのガスの流量
を増やしていくと、第３図の曲線１のように無負荷電圧
Ｖｏ［達する壕で、出力電圧は上昇していく。この無負
荷電圧ｖ０は、定格出力１圧の選定にもよるが、一般的
に燃料電池の定格出力電圧の１６０％程度でらり、１セ
ル当りＩＶ程度でおる。The operation of the voltage suppression circuit will be explained using FIG. Third
The figure shows a transient change in the fuel cell output voltage from the start of power generation to the start of the inverter. b) Start supplying oxygen and hydrogen to the fuel cell 1 with the DC breaker 5 and DC switch 48 open, and reduce the flow rate of each gas while keeping the differential pressure between oxygen gas and hydrogen gas within the allowable value. As the voltage increases, the output voltage increases until it reaches the no-load voltage Vo [as shown by curve 1 in Figure 3]. Although this no-load voltage v0 depends on the selection of the rated output voltage of 1 voltage, it is generally about 160% of the rated output voltage of the fuel cell, and about IV per cell.
この状態では燃料電池電極の劣化をきたすので、燃料電
池の出力電圧の許容上限値ｖｈを決め、出力電圧が、上
記上限電圧ｖｈに達する前（時刻ｔ０）ｖｃＩ流開閉５
８を投入し、電圧上昇を抑えている（曲線２）。電圧ｖ
ｈは実用上寿命に影響を与えない電圧で燃料電池の定格
出力電圧の１３０ ％程度であり、ｌセル当り約Ｏ，Ｓ
Ｖとされている。電圧抑制回路７の抵抗器９の抵抗値
は、第４図の燃料電池の′シ圧−也流特性線１と抵抗器
の特性線２との交点Ａの′成田が前述の上限電圧Ｖｈｒ
ｃ、電流１１が燃料電池の定格の２５％程度となるよう
に設計されている。In this state, the fuel cell electrode deteriorates, so determine the allowable upper limit value vh of the output voltage of the fuel cell, and before the output voltage reaches the above upper limit voltage vh (time t0) vcI flow switching 5
8 to suppress the voltage rise (curve 2). voltage v
h is a voltage that does not affect the practical life of the fuel cell, which is approximately 130% of the rated output voltage of the fuel cell, and approximately O, S per 1 cell.
It is said to be V. The resistance value of the resistor 9 of the voltage suppression circuit 7 is determined by the above-mentioned upper limit voltage Vhr at the intersection A of the pressure-current characteristic line 1 of the fuel cell and the resistor characteristic line 2 of the fuel cell in FIG.
c. The current 11 is designed to be approximately 25% of the rating of the fuel cell.
以上述べたように、電圧抑制回路では、燃料電池起動時
ないし軽負荷時の電圧の上昇によるインバータ６の破損
の防止および燃料電池の起動時からインバータ６の起動
までの間の過電圧による燃料電池の特性劣化を防ぐため
に使用されると共に次の目的にも使用される。いま燃料
電池発電システムが定格運転を行っているとする。すな
わち直流しゃ断ｔ１５が投入されておシ、所定の酸素ガ
ス３、水素ガス４の供給により、燃料電池の電圧−電流
特性は、第４図の曲線１で示され、動作点はＢ点でその
時の電圧、電流は定格値Ｖｒ、Ｉｒである。As described above, the voltage suppression circuit prevents damage to the inverter 6 due to voltage rise during fuel cell startup or light load, and prevents damage to the fuel cell due to overvoltage between fuel cell startup and inverter 6 startup. It is used to prevent characteristic deterioration and is also used for the following purposes. Assume that the fuel cell power generation system is currently operating at its rated value. That is, when the DC cutoff t15 is turned on and the predetermined oxygen gas 3 and hydrogen gas 4 are supplied, the voltage-current characteristics of the fuel cell are shown by curve 1 in FIG. 4, and the operating point is at point B. The voltage and current are the rated values Vr and Ir.
ここでインバータ６に系統側不足電圧など短時間で回復
可能な事故あるいは継続的な事故等が発生したとすると
、図示しない保護袋ｒａにより、直流しゃ断器５をトリ
ップしてインバータ６を切論す。If an accident that can be recovered in a short time or a continuous accident occurs in the inverter 6, such as undervoltage on the grid side, the inverter 6 is disconnected by tripping the DC breaker 5 using the protective bag RA (not shown). .
このため燃料電池は無負荷となシ、その出力電圧は、前
述の電圧ｖ０となる。前述のとおり、この状態では、燃
料電池電極の劣化をきたすので、直流しゃ断器５をトリ
ップさせるための図示しない保護装置からの信号によシ
、電圧抑制回路７の直流開閉器８を投入し、抵抗５９ｖ
ｃ燃料電池出力を与え、燃料１池出力電圧を上限許容値
ｖｈ以下に抑制する。Therefore, the fuel cell is placed under no load, and its output voltage becomes the voltage v0 mentioned above. As mentioned above, in this state, the fuel cell electrode deteriorates, so in response to a signal from a protection device (not shown) to trip the DC breaker 5, the DC switch 8 of the voltage suppression circuit 7 is turned on. resistance 59v
c gives the fuel cell output and suppresses the fuel cell output voltage to below the upper limit allowable value vh.
上記のように、電圧抑制回路７は、燃料電池の起動時か
らインバータ６の起動までの間の電圧上昇あるいはイン
バータ６の事故時に燃料電池が無負荷状ｌ！！Ｓｖｃな
るのを防ぐために、燃料電池１の直流出力端と並列に直
流開閉器８を介して抵抗器９を接続して、負荷の代用と
しているが、この抵抗で消費される電力は損失となり、
システム全体の効率が低下する。As described above, the voltage suppression circuit 7 is configured to prevent the fuel cell from being in an unloaded state when the voltage rises between the start of the fuel cell and the start of the inverter 6 or when the inverter 6 fails. ! In order to prevent Svc, a resistor 9 is connected in parallel with the DC output end of the fuel cell 1 via a DC switch 8 to serve as a load, but the power consumed by this resistor becomes a loss.
Overall system efficiency decreases.
また、この抵抗を別置きするのでスペースも大きくなる
。抵抗は空気冷却部であるから、さらに大きくなり、ま
た高温になるため離隔距離を大きくとる必要がちる。Also, since this resistor is placed separately, space is also increased. Since the resistance is an air-cooled part, it becomes even larger and becomes hotter, so it is necessary to provide a large separation distance.
本発明は上記問題点を解決するためになされたもので、
燃料電池の出力電圧抑制を行う際の従来損失となってい
た電力を他の用途に有効利用できるようにすると共に、
小形化を可能とした燃料′４４部電システムを提供する
ことを目的とする。The present invention has been made to solve the above problems,
In addition to making it possible to effectively use the power that was previously lost when suppressing the output voltage of fuel cells for other purposes,
It is an object of the present invention to provide a fuel supply system that can be miniaturized.
上記目的を達成するために本発明では、電圧抑制回路で
用いられる抵抗器の代わりに、燃料電池の冷却水の昇温
に用いる電気ヒータの一部をオリ用するものである。In order to achieve the above object, the present invention uses a part of the electric heater used to raise the temperature of the cooling water of the fuel cell instead of the resistor used in the voltage suppression circuit.
第１図は、本発明の一実施例を示す回路図でわシ、第２
図と同一部分には同一符号を付してその説明を省略し、
ここでは異なる部分についてのみ述べる。すなわち、図
において、１５は燃に４電池の冷却水Ｏ昇温に用いる電
気ヒータの１部でちり、燃料電池発電システムの発電開
始時およびインバータ事故時直流開閉器８により、燃料
電池１の直流出力端に接続し、前述のようＶＣ電圧上昇
を抑えるようにする。その時間は、発電開始時、インバ
ータ事故時共１０数秒以下である。このべ気ヒータは、
水中ヒータでｂカ熱容量が大きいので、ヒータ過熱は少
ない。FIG. 1 is a circuit diagram showing one embodiment of the present invention.
Parts that are the same as those in the figures are given the same reference numerals and their explanations are omitted.
Only the different parts will be described here. That is, in the figure, 15 is a part of the electric heater used to raise the temperature of the cooling water O of the 4 batteries. Connect it to the output terminal to suppress the VC voltage rise as described above. The time is less than 10 seconds both at the start of power generation and at the time of an inverter failure. This Beki heater is
Since the submersible heater has a large heat capacity, there is little overheating of the heater.
以上説明したように、本発明は、従来の燃料電池発７Ｋ
７ステムにおいて燃料電池の出力端に接続されている
抵抗の代わシに、燃料電池内の反応による発熱を除去し
、内部温度をコントロールするための冷却水を昇温する
のに用いられている電気ヒータの一部を利用し、抵抗と
同じように電圧抑制を可能とするように構成したので、
従来抵抗で消費されていた燃料電池の発電電力を冷却水
の昇温に使うことができ、エネルギーの回収が可能にで
きる効果がラシ、また水中電気ヒータであるため小型化
される効果がらる。As explained above, the present invention is based on the conventional fuel cell generator 7K.
In place of the resistor connected to the output end of the fuel cell in the 7 stem, there is electricity used to remove heat generated by reactions within the fuel cell and raise the temperature of the cooling water to control the internal temperature. By using a part of the heater, it was configured to enable voltage suppression in the same way as a resistor.
The electric power generated by the fuel cell, which was conventionally consumed by a resistor, can be used to raise the temperature of the cooling water, which has the advantage of recovering energy, and because it is an underwater electric heater, it can be made smaller.
第１図は本発明の燃料電池発電システムの一実施例を示
す回路構成図、第２図は従来の燃料電池発電システムの
回路構成図、第３図は燃料電池の起動時の電圧応答を示
す図、第４図は燃料電池と電圧抑制回路の電圧−電流特
性曲線図でるる。
１・・・燃料電池 ２・・・燃料電池のセル構成
３・・・酸素ガス燃料 ４・・・水素ガス燃料５・・
・直流しゃ断器 ６・・・インバータ７・・・電圧抑
制回路 ８．・・直流開閉器９・・・抵抗器
１１・・・気水分離器１２．１５・・・電気ヒータ
１３・・・改質器１４・・原燃料
代理人 弁理士 則 近 憲 佑 （はが１名）第３図
第４図Fig. 1 is a circuit diagram showing an embodiment of the fuel cell power generation system of the present invention, Fig. 2 is a circuit diagram of a conventional fuel cell power generation system, and Fig. 3 shows the voltage response at startup of the fuel cell. 4 are voltage-current characteristic curve diagrams of the fuel cell and the voltage suppression circuit. 1...Fuel cell 2...Cell configuration of fuel cell 3...Oxygen gas fuel 4...Hydrogen gas fuel 5...
・DC breaker 6... Inverter 7... Voltage suppression circuit 8. ...DC switch 9...Resistor
11... Steam water separator 12.15... Electric heater
13... Reformer 14... Raw fuel agent Patent attorney Noriyuki Chika (1 person) Figure 3 Figure 4
Claims (1)
させる気水分離器、改質用蒸気の熱源を燃料電池から得
るための燃料電池冷却部系および不足熱を供給する電気
ヒータおよび燃料電池、直流しゃ断器ならびにインバー
タを具備した燃料電池発電システムにおいて、開閉器お
よび前記電気ヒータの一部を直列接続したものを、前記
燃料電池の出力側に並列に接続し、燃料電池出力電圧の
抑制を行うことを特徴とする燃料電池発電システム。At least a reformer for reforming raw fuel, a steam-water separator for generating reforming steam, a fuel cell cooling system for obtaining the heat source of the reforming steam from the fuel cell, and an electric heater for supplying insufficient heat. In a fuel cell power generation system equipped with a fuel cell, a DC breaker, and an inverter, a series connection of a switch and a part of the electric heater is connected in parallel to the output side of the fuel cell, and the output voltage of the fuel cell is adjusted. A fuel cell power generation system characterized by suppression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59205542A JPS6185775A (en) | 1984-10-02 | 1984-10-02 | Fuel battery power generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59205542A JPS6185775A (en) | 1984-10-02 | 1984-10-02 | Fuel battery power generating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6185775A true JPS6185775A (en) | 1986-05-01 |
Family
ID=16508615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59205542A Pending JPS6185775A (en) | 1984-10-02 | 1984-10-02 | Fuel battery power generating system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6185775A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02230666A (en) * | 1989-03-03 | 1990-09-13 | Tohoku Electric Power Co Inc | Fuel cell power generating system |
| JPH03112066A (en) * | 1989-09-27 | 1991-05-13 | Mitsubishi Electric Corp | Power generating system for fuel cell |
| JPH05251101A (en) * | 1992-03-09 | 1993-09-28 | Mitsubishi Electric Corp | Fuel cell power generating apparatus and its operation starting method |
| EP0741428A1 (en) * | 1995-05-04 | 1996-11-06 | FINMECCANICA S.p.A. AZIENDA ANSALDO | A supply system for fuel cells of the S.P.E. (SOLID POLYMER ELECTROLYTE) type for hybrid vehicles). |
| WO1996041393A1 (en) * | 1995-06-07 | 1996-12-19 | Ballard Power Systems Inc. | Temperature regulating system for a fuel cell powered vehicle |
| JP2010061859A (en) * | 2008-09-01 | 2010-03-18 | Honda Motor Co Ltd | Fuel cell system |
| US10578087B2 (en) | 2015-12-16 | 2020-03-03 | Fujikoki Corporation | Variable-capacity compressor control valve |
-
1984
- 1984-10-02 JP JP59205542A patent/JPS6185775A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02230666A (en) * | 1989-03-03 | 1990-09-13 | Tohoku Electric Power Co Inc | Fuel cell power generating system |
| JPH03112066A (en) * | 1989-09-27 | 1991-05-13 | Mitsubishi Electric Corp | Power generating system for fuel cell |
| JPH05251101A (en) * | 1992-03-09 | 1993-09-28 | Mitsubishi Electric Corp | Fuel cell power generating apparatus and its operation starting method |
| EP0741428A1 (en) * | 1995-05-04 | 1996-11-06 | FINMECCANICA S.p.A. AZIENDA ANSALDO | A supply system for fuel cells of the S.P.E. (SOLID POLYMER ELECTROLYTE) type for hybrid vehicles). |
| US5605770A (en) * | 1995-05-04 | 1997-02-25 | Finmeccanica S.P.A. Azienda Ansaldo | Supply system for fuel cells of the S.P.E. (solid polymer electrolyte) type for hybrid vehicles |
| WO1996041393A1 (en) * | 1995-06-07 | 1996-12-19 | Ballard Power Systems Inc. | Temperature regulating system for a fuel cell powered vehicle |
| JP2010061859A (en) * | 2008-09-01 | 2010-03-18 | Honda Motor Co Ltd | Fuel cell system |
| US10578087B2 (en) | 2015-12-16 | 2020-03-03 | Fujikoki Corporation | Variable-capacity compressor control valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2782854B2 (en) | Fuel cell protection device | |
| CA3032333C (en) | Vehicle system | |
| JPH1074533A (en) | Fuel cell system and electric vehicle | |
| US8027759B2 (en) | Fuel cell vehicle system | |
| JP2006054976A (en) | Equipment with fuel cell mounted thereon | |
| JP2008538650A (en) | Connection configuration without a DC / DC converter to a matched battery fuel cell | |
| JP3470996B2 (en) | Operating method of fuel cell power generator | |
| KR20040002912A (en) | Device for emergency power supply to auxiliary components of a nuclear power plant and use method | |
| KR20150116661A (en) | Fuel cell hybrid system | |
| JP2002231287A (en) | Fuel cell device and its control method | |
| JPS6185775A (en) | Fuel battery power generating system | |
| JP5675675B2 (en) | Combined power generation system and method of operating combined power generation system | |
| JPH11176454A (en) | Power source for fuel cell accessory | |
| KR101435388B1 (en) | System for initial charging of smoothing capacitor of fuel cell | |
| JP3979775B2 (en) | Hybrid fuel cell system | |
| KR101418422B1 (en) | System for independent start-up of fuel cell for ship | |
| KR20070039361A (en) | Fuel cell system and ocv protecting method | |
| JP3583914B2 (en) | Auxiliary power supply for fuel cell | |
| JPH10210685A (en) | Controlling method for system-interconnected power converter for fuel cell | |
| JPS62150664A (en) | Fuel cell power generation system | |
| CN115663237A (en) | SOFC hydrogen fuel power supply equipment and control method thereof | |
| JPH0760691B2 (en) | Fuel cell power generation system | |
| JPS59149669A (en) | Over-voltage suppressing apparatus of fuel battery | |
| JP3646433B2 (en) | Fuel cell power generator | |
| JPS60138854A (en) | Protection equipment of fuel cell |