CN112086956A - Fuel cell testing source-mounted integrated power supply - Google Patents
Fuel cell testing source-mounted integrated power supply Download PDFInfo
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- CN112086956A CN112086956A CN202010892386.7A CN202010892386A CN112086956A CN 112086956 A CN112086956 A CN 112086956A CN 202010892386 A CN202010892386 A CN 202010892386A CN 112086956 A CN112086956 A CN 112086956A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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Abstract
The invention discloses a fuel cell testing source-mounted integrated power supply which comprises an integrated power supply body, wherein the integrated power supply body consists of three-phase mains supply, an AC/DC converter, a DC/DC1 output, a fuel cell rack auxiliary device, a DC/DC2 input and a fuel cell, the AC/DC converter is fixedly arranged on one side of the three-phase mains supply, and a DC/DC bus is connected in parallel with a DC bus. The integrated power supply is more energy-saving, after energy conversion is concentrated on the direct-current bus, the electric energy generated in the power generation process of the fuel cell can be fully utilized, the electric energy is directly converted into direct-current power supply at the bus, two losses from the AC/DC to the power grid and from the power grid to the direct-current bus are eliminated, most of interference is eliminated when the bidirectional DC/DC is used as a feedback load, the performance is optimized, a unified integral product is formed, the structure and the size are greatly optimized while the performance is optimized, and the size space is improved by 50%.
Description
Technical Field
The invention relates to an integrated power supply, in particular to a fuel cell testing source-mounted integrated power supply, and belongs to the technical field of fuel cells.
Background
The current power supply technology comprises a unidirectional flow direct current power supply for converting Alternating Current (AC) into Direct Current (DC) conventionally, a feed network which can convert the alternating current into the direct current for output through power electronics and can convert the direct current into the alternating current through the power electronics, and the unidirectional AC/DC conversion power supply can be only used as a source and can be used as a direct current power supply in a bidirectional way and also can be used as a direct current energy feedback network generated by a feedback type electronic load fuel cell; in addition, electronic loads are available on the market which dissipate energy via power semiconductors.
In the current test of the fuel cell, before the fuel cell starts generating electricity, auxiliary equipment such as hydrogen circulation, air compression, auxiliary control and the like needs to be supplied with direct current, and the starting sequence of the power generation starting of the fuel cell and the power supply of each equipment is limited. On one hand, a large amount of heat generated in the use process of a consumption type load is energy waste, and if a bidirectional power supply is used as a feedback type electronic load, the feedback type electronic load is limited by the output mode of the feedback type electronic load (although the feedback type load can be used as a direct current power supply output and a load feedback, the two modes cannot work simultaneously), and the simple load cannot work in the working mode of the source load at the same time. Therefore, the feedback load can only replace the pure resistive load and the consumption electronic load, and cannot replace a unidirectional dc power supply to supply power to the auxiliary device, and in summary, the prior art has the following disadvantages:
1. the power supply and the pulling load need two separate devices, so the overall volume is large;
2. the consumption of fuel cell power generation by pure resistive loads or consumption type electronic loads in the form of heat is a waste of energy;
3. the electric energy supplied by the auxiliary equipment needs to be obtained from the power grid, so that more electric charges are needed, and the electricity consumption cost is high (the electricity generated by the fuel cell is not utilized but needs to be consumed from the power grid);
4. the increased number of device operations during the testing process takes up too much user operation time, thereby reducing testing efficiency.
Therefore, the current need exists for a system which can not only feed the electric energy generated by the fuel cell back to the power grid to play the roles of saving energy and reducing emission and reducing test cost, but also can simultaneously supply stable direct current electric energy to auxiliary equipment.
Disclosure of Invention
The invention aims to provide a source-mounted integrated power supply for testing a fuel cell, which aims to solve the problems that two modes provided in the background technology cannot work simultaneously, a pure load cannot be competent for a source-mounted working mode simultaneously, a feedback type load can only replace the pure resistive load and a consumption type electronic load, and a unidirectional direct-current power supply cannot be replaced to supply power to auxiliary equipment.
In order to achieve the purpose, the invention provides the following technical scheme: the fuel cell testing source-mounted integrated power supply comprises an integrated power supply body, wherein the integrated power supply body consists of a three-phase mains supply, an AC/DC converter, a DC/DC1 output, fuel cell rack auxiliary equipment, a DC/DC2 input and a fuel cell, the AC/DC converter is fixedly arranged on one side of the three-phase mains supply, the DC/DC converter is fixedly arranged on one side of the AC/DC converter, the AC/DC converter and the DC/DC converter are electrically connected through a direct current bus, the AC/DC converter, the DC/DC converter and the direct current bus form an AC/DC and DC/DC internal control return line, and the direct current bus is connected with the DC/DC in parallel.
As a preferred technical scheme of the invention, the DC/DC is composed of a DC/DC1 output and a DC/DC2 input, and the DC/DC1 output and the DC/DC2 input are respectively connected with the direct current bus in parallel.
As a preferred technical solution of the present invention, the DC/DC1 output and the DC/DC2 input are respectively connected in parallel with the DC bus, and specifically function as:
the electric energy can be exchanged between the output of the DC/DC1 and the input of the DC/DC2, when the output power of the DC/DC1 is larger than the input feedback power of the DC/DC2, the AC/DC supplements the missing part, and when the output power of the DC/DC1 is smaller than the input feedback power of the DC/DC2, the AC/DC feeds redundant energy back to the power grid.
As a preferred embodiment of the present invention, an electrical load is electrically connected to the output side of the DC/DC1, and a device under test is electrically connected to the input side of the DC/DC 2.
As a preferred technical solution of the present invention, the electrical load is a fuel cell rack auxiliary device, and the device under test is a fuel cell.
As a preferred technical scheme of the invention, the AC/DC and DC/DC internal control loop line adopts a dsp + arm combined control mode, and dsp control chips are arranged inside the AC/DC converter, the DC/DC1 and the DC/DC 2.
As a preferred technical solution of the present invention, the specific functions of the dsp chip located inside the AC/DC converter are as follows:
the device is responsible for converting an alternating current battery of a power grid into direct current, and meanwhile, when energy is detected to be fed back to the power grid, the device is quickly switched to a feedback load mode.
As a preferred technical solution of the present invention, the specific functions of the dsp chip located inside the DC/DC converter are as follows:
the energy feedback control system is responsible for sending energy back to the direct current bus when detecting that the fuel cell generates electricity, and when the energy on the direct current bus exceeds a certain value, the AC/DC can start the energy feedback function.
As a preferred technical scheme of the invention, the specific functions of the dsp chip positioned inside the output of the DC/DC1 and inside the input of the DC/DC2 are as follows:
the energy on the direct current bus is converted into different voltages and powers required by users, and other equipment is stably supplied with power.
Compared with the prior art, the invention has the beneficial effects that:
1. the fuel cell testing source-mounted integrated power supply is more energy-saving in use, and specifically comprises the following steps: originally, each power supply is independently taken from a power grid, efficient loss can be realized during AC/DC conversion, when the original high-power bidirectional DC/DC is used as a feedback load, energy is completely fed back to the power grid through the bidirectional AC/DC, the feedback part can realize efficient loss, the energy conversion is concentrated on a direct-current bus, the electric energy generated in the power generation process of a fuel cell can be fully utilized, the energy is directly converted into direct-current power supply at the bus, two losses from the AC/DC to the power grid and from the power grid to the direct-current bus are omitted, for the traditional consumption type load, the energy is saved by more than 90%, and for a novel single feedback type load, the energy is saved by more than 10%.
2. The invention discloses a fuel cell test source-borne integrated power supply performance optimization method, which specifically comprises the following steps:
originally, each power supply independently gets electricity from the power grid, and the power grid is disturbed in the power consumption process, and when the original high-power bidirectional DC/DC is used as a feedback load, the energy is completely fed back to the power grid through the bidirectional AC/DC, and the interference is also produced to the power grid, and most of the interference can be cancelled through the optimized design, so that the performance is optimized, and the interference to the power grid is reduced by at least one third.
3. The invention discloses a fuel cell test source-borne integrated power supply structure optimization, which specifically comprises the following steps:
originally each power and load product are independent, form unified whole product now, and the performance optimization simultaneously, structure and size also obtain very big optimization, reach the promotion of size space 50%, the optimization of man-machine interaction and control, and the product is optimized unified the back, has simplified the complexity of former communication. The control logic is more optimized.
4. By modulating the phase and amplitude of the voltage, the reduction of feedback efficiency caused by deviation from the rated voltage is avoided, and the service life of the converter and other equipment is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an AC/DC schematic block diagram of the present invention;
FIG. 3 is a DC/DC schematic block diagram of the present invention.
In the figure: 1. three-phase mains supply; 2. an AC/DC converter; 3. AC/DC and DC/DC internal control loop lines; 4. a direct current bus; 5. a DC/DC converter; 6. a DC/DC1 output; 7. fuel cell rack auxiliary equipment; 8. a DC/DC2 input; 9. a fuel cell.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution of a fuel cell test source-mounted integrated power supply: the fuel cell testing source-mounted integrated power supply comprises an integrated power supply body, wherein the integrated power supply body consists of a three-phase mains supply 1, an AC/DC converter 2, a DC/DC converter 5, a DC/DC1 output 6, a fuel cell rack auxiliary device 7, a DC/DC2 input 8 and a fuel cell 9, the AC/DC converter 2 is fixedly arranged on one side of the three-phase mains supply 1, the DC/DC converter 5 is fixedly arranged on one side of the AC/DC converter 2, the AC/DC converter 2 and the DC/DC converter 5 are electrically connected through a direct current bus 4, the AC/DC converter 2, the DC/DC converter 5 and the direct current bus 4 form an AC/DC and DC/DC internal control return line 3, and the DC/DC is connected to the direct current bus 4 in parallel.
The DC/DC consists of DC/DC1 output 6 and DC/DC2 input 8, and DC/DC1 output 6 and DC/DC2 input 8 are connected in parallel with the DC bus 4, respectively.
The specific role of the parallel connection of the DC/DC1 output 6 and the DC/DC2 input 8 with the DC bus 4 respectively is:
the electric energy can be exchanged between the output 6 of the DC/DC1 and the input 8 of the DC/DC2, when the output 6 of the DC/DC1 is larger than the feedback 8 of the input 8 of the DC/DC2, the AC/DC supplements the missing part, and when the output 6 of the DC/DC1 is smaller than the feedback 8 of the input 8 of the DC/DC2, the AC/DC feeds the surplus energy back to the power grid.
One side of the output 6 of the DC/DC1 is electrically connected with an electric load, and one side of the input 8 of the DC/DC2 is electrically connected with a tested device.
The electrical load is a fuel cell rack auxiliary device 7, and the device to be tested is a fuel cell 9.
The AC/DC and DC/DC internal control loop line 3 adopts a dsp + arm combined control mode, and dsp control chips are arranged inside the AC/DC converter 2, inside the DC/DC converter 5, inside the DC/DC1 output 6 and inside the DC/DC2 input 8.
The specific functions of the dsp chip located inside the AC/DC converter 2 are:
the device is responsible for converting an alternating current battery of a power grid into direct current, and meanwhile, when energy is detected to be fed back to the power grid, the device is quickly switched to a feedback load mode.
The specific functions of the dsp chip located inside the DC/DC converter 5 are:
the energy feedback device is responsible for sending energy back to the direct current bus 4 when detecting that the fuel cell generates electricity, and when the energy on the direct current bus 4 exceeds a certain value, the AC/DC can start the energy feedback function.
The specific functions of the dsp chip located inside the DC/DC1 output 6 and inside the DC/DC2 input 8 are:
the energy on the direct current bus 4 is converted into different voltages and power required by a user, and other equipment is stably supplied with power.
As shown in fig. 1, specifically, the AC/DC and DC/DC internal control loop line 3 adopts a dsp + arm combined control mode, dsp control chips are respectively arranged inside the AC/DC converter 2, the DC/DC converter 5, the DC/DC1 output 6, and the DC/DC2 input 8, and the dsp chip located inside the AC/DC converter 2 is responsible for converting an AC battery of a power grid into a DC power, and is rapidly switched to a feedback load mode when it is detected that energy needs to be fed back to the power grid; a dsp chip positioned inside the DC/DC converter 5 is responsible for sending energy back to the direct current bus when detecting that the fuel cell generates electricity, and when the energy on the direct current bus exceeds a certain value, the AC/DC can start an energy feedback function; the dsp chips located inside the output 6 of the DC/DC1 and inside the input 8 of the DC/DC2 are responsible for converting the energy on the DC bus into different voltages and powers required by the user, and stably supplying other devices.
As shown in fig. 2, specifically, the AC/DC converter 2 is composed of a three-phase AC mains input inductance, an AC voltage sampling, an AC current sampling, a three-phase full bridge PWM rectifier topology composed of IGBTs, a current bus output and sampling part, and an AC/DC conversion sampling and control part, for the convenience of human-computer interaction and user operation, wherein the model of the dsp control chip is C54X, wherein the C54X control chip has the following functions, 1, safety isolation function; particularly, the system has strong and weak current isolation, IGBT isolation driving, surge isolation protection and lightning isolation protection; 2. eliminating a grounding loop; 3. voltage transformation; specifically, the method comprises the steps of step-up conversion, step-down conversion, alternating current-direct current conversion (AC/DC, DC/AC) and polarity conversion; 3. protection; specifically, short-circuit protection, overvoltage protection, undervoltage protection and overcurrent protection are realized, the dsp control chip is provided with an arm for communication conversion, then each data state and control signal are displayed on a panel through a touch screen, and the arm is provided with functional interfaces such as lan, can, rs232 and rs485, so that a user can conveniently communicate with each module, read parameters and perform system control.
As shown in fig. 3, specifically, the DC/DC converter 5 is composed of a DC bus input and sampling, a BUCK circuit switch part, a DC energy storage, a filter inductor, a DC filter capacitor, an output current sampling, a DC/DC output and output voltage sampling part, for convenience of man-machine interaction and user operation, wherein the model of the dsp control chip is TMS320C54xx, wherein the TMS320C54xx control chip has the following functions, 1, safety isolation; particularly, the system has strong and weak current isolation, IGBT isolation driving, surge isolation protection and lightning isolation protection; 2. eliminating a grounding loop; 3. voltage transformation; specifically, the method comprises the steps of step-up conversion, step-down conversion, alternating current-direct current conversion (AC/DC, DC/AC) and polarity conversion; 3. protection; specifically, short-circuit protection, overvoltage protection, undervoltage protection and overcurrent protection are realized, the dsp control chip is provided with an arm for communication conversion, then each data state and control signal are displayed on a panel through a touch screen, and the arm is provided with functional interfaces such as lan, can, rs232 and rs485, so that a user can conveniently communicate with each module, read parameters and perform system control.
When the fuel cell test source-mounted integrated power supply is used, in use, the starting sequence of the fuel cell test bench is that firstly the DC/DC1 operates in a constant voltage output mode to drive auxiliary equipment of the test bench to operate firstly, the fuel cell can operate to generate power when all conditions are met after the auxiliary equipment operates, the power generation of the fuel cell needs to be carried out, at the moment, the effect of the DC/DC2 is highlighted, specifically, as follows, the DC/DC2 operates in a feedback mode to be used as a load for fuel, and the AC/DC2 and the DC/DC3 which are connected in series are used on the basis of a bidirectional power supply, wherein the DC/DC is divided into DC/DC16 for supplying power to the auxiliary equipment of the fuel cell test bench and DC/DC28 for pulling the fuel cell, the AC/DC converter 2 is used for converting a three-phase commercial power 1 into a direct current bus through PWM rectification, for supplying reliable direct current to the DC/DC converter 5 of the later stage, DC/DC16 and DC/DC28 are connected in parallel on the direct current bus 4. The structure can realize the exchange of electric energy between DC/DC1 and DC/DC2, when the output power of DC/DC1 is greater than the feedback power of DC/DC2, the AC/DC supplements the missing part at the moment, and when the output power of DC/DC1 is less than the feedback power of DC/DC2, the AC/DC feeds the surplus energy back to the power grid at the moment, so that the double DC/DC output sharing one AC/DC converter not only reduces the volume of equipment and the production cost of the equipment, but also improves the use efficiency of the energy.
The specific mode of the energy feedback power grid comprises the following steps of performing phase amplitude double regulation on feedback voltage during feedback power grid:
Ut＝a*In*w*K+b*(Ud+Ub)/n
the method comprises the following steps that Ut is regulated voltage, a is a phase modulation proportionality coefficient, In is modulated alternating current, w is a phase modulation angle coefficient, K is a rectifier resistor, b is an amplitude modulation proportionality coefficient, Ud is direct current voltage, Ub is direct current voltage deviation compensation voltage, Ub can be determined according to direct current voltage deviation historical data, and the frequency of Ub is the same as the frequency of the existing power grid of the power grid. The specific Ub determining mode is the prior art, and the invention is not described again; n is the number of rectifiers.
And calculating the excess energy according to the modulated voltage and the modulated alternating current, and feeding the excess energy back to the power grid after AC/DC conversion.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The fuel cell testing source-mounted integrated power supply comprises an integrated power supply body, and is characterized in that the integrated power supply body consists of a three-phase mains supply (1), an AC/DC converter (2), a DC/DC converter (5), a DC/DC1 output (6), a fuel cell bench auxiliary device (7), a DC/DC2 input (8) and a fuel cell (9), wherein an AC/DC converter (2) is fixedly arranged on one side of the three-phase mains supply (1), a DC/DC converter (5) is fixedly arranged on one side of the AC/DC converter (2), the AC/DC converter (2) and the DC/DC converter (5) are electrically connected through a direct current bus (4), the AC/DC converter (2), the DC/DC converter (5) and the direct current bus (4) form an AC/DC and DC/DC internal control return route (3), and the direct current bus (4) is connected with a DC/DC in parallel.
2. The fuel cell test source-borne integrated power supply of claim 1, wherein: the DC/DC is composed of a DC/DC1 output (6) and a DC/DC2 input (8), and the DC/DC1 output (6) and the DC/DC2 input (8) are respectively connected with the direct current bus (4) in parallel.
3. The fuel cell test source-borne integrated power supply of claim 1, wherein: the DC/DC1 output (6) and the DC/DC2 input (8) are respectively connected with the direct current bus (4) in parallel, and are used for:
the configuration electric energy is exchanged between a DC/DC1 output (6) and a DC/DC2 input (8), when the output power of the DC/DC1 output (6) is larger than the feedback power of the DC/DC2 input (8), the AC/DC supplements the missing part, and when the output power of the DC/DC1 output (6) is smaller than the feedback power of the DC/DC2 input (8), the AC/DC feeds redundant energy back to the power grid.
4. The fuel cell test source-borne integrated power supply of claim 1, wherein: one side of the output (6) of the DC/DC1 is electrically connected with an electric load, and one side of the input (8) of the DC/DC2 is electrically connected with a tested device.
5. The integrated fuel cell test source-borne power supply of claim 4, wherein: the electric load is a fuel cell rack auxiliary device (7), and the device to be tested is a fuel cell (9).
6. The fuel cell test source-borne integrated power supply of claim 1, wherein: the AC/DC and DC/DC internal control loop line (3) adopts a dsp + arm combined control mode, and dsp control chips are arranged inside the AC/DC converter (2), the DC/DC converter (5), the DC/DC1 output (6) and the DC/DC2 input (8).
7. The integrated fuel cell test source-borne power supply of claim 6, wherein: the specific functions of the dsp chip positioned inside the AC/DC converter (2) are as follows:
the device is responsible for converting an alternating current battery of a power grid into direct current, and meanwhile, when energy is detected to be fed back to the power grid, the device is quickly switched to a feedback load mode.
8. The integrated fuel cell test source-borne power supply of claim 6, wherein: a dsp chip located inside the DC/DC converter (5) for:
the energy feedback device is responsible for sending energy back to the direct current bus 4 when detecting that the fuel cell generates electricity, and when the energy on the direct current bus 4 exceeds a certain value, the AC/DC can start the energy feedback function.
9. The integrated fuel cell test source-borne power supply of claim 6, wherein: the specific functions of the dsp chip located inside the output (6) of the DC/DC1 and inside the input (8) of the DC/DC2 are:
the energy on the direct current bus 4 is converted into different voltages and power required by a user, and other equipment is stably supplied with power.
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| CN202010892386.7A CN112086956A (en) | 2020-08-30 | 2020-08-30 | Fuel cell testing source-mounted integrated power supply |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1441407A2 (en) * | 2002-12-09 | 2004-07-28 | Asia Pacific Fuel Cell Technologies, Ltd. | Functional test and demonstration apparatus for fuel cell power system |
| JP2009181824A (en) * | 2008-01-31 | 2009-08-13 | Aisin Seiki Co Ltd | Fuel cell system |
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| EP1441407A2 (en) * | 2002-12-09 | 2004-07-28 | Asia Pacific Fuel Cell Technologies, Ltd. | Functional test and demonstration apparatus for fuel cell power system |
| JP2009181824A (en) * | 2008-01-31 | 2009-08-13 | Aisin Seiki Co Ltd | Fuel cell system |
| CN108155669A (en) * | 2018-02-11 | 2018-06-12 | 常州博能新能源有限公司 | Energy electronic load device |
| CN209803301U (en) * | 2018-12-28 | 2019-12-17 | 天津银隆新能源有限公司 | Micro-grid system based on fuel cell test |
| CN209911510U (en) * | 2018-12-28 | 2020-01-07 | 天津银隆新能源有限公司 | Battery test and formation grading coupling system based on microgrid |
| CN211043597U (en) * | 2019-07-29 | 2020-07-17 | 苏州万瑞达电气有限公司 | Seamless switching hydrogen fuel cell testing mold box |
| CN110673055A (en) * | 2019-10-18 | 2020-01-10 | 北京动力源科技股份有限公司 | Testing device of DC/DC converter and power supply testing system |
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