Electronic load controller with constant current and constant power
A technology of electronic load and controller, which is applied in the direction of instruments, measuring electricity, and measuring electrical variables, etc., can solve the problems that cannot be applied to the test of fuel cell external characteristics, achieve the goal of increasing reliability and safe working range, and reducing voltage and current stress Effect
Inactive Publication Date: 2012-07-04
BEIHANG UNIV
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Problems solved by technology
However, the existing electronic load cannot be applied to the external characteristic test of fuel cell stacks of different specifications, so the present invention designs an electronic load controller capable of high power and suitable for different specifications
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[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0021] see figure 1 As shown, the present invention is an electronic load controller with constant current and constant power suitable for fuel cells, and the electronic load controller includes a DSP processor, a D / A converter, a first drive circuit, and a second drive circuit , a protection circuit and an equivalent impedance circuit; wherein, the DSP processor, the D / A converter, the first drive circuit, the second drive circuit and the protection circuit form the control circuit part of the electronic load; the equivalent impedance circuit is arranged between the fuel cell and the between control circuits. The computer (running with IXXAT V2.2 software) is used to monitor the state of the fuel cell and send instructions to the electronic load controller. A computer is a modern intelligent electronic device that can automatically and quickly perform a l...
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The invention discloses an electronic load controller for testing a fuel cell, which comprises a DSP processor, a D / A converter, a first driving circuit, a second driving circuit, a protective circuit and an equivalent impedance circuit, wherein the DSP processor, the D / A converter, the first driving circuit, the second driving circuit and the protective circuit form a control circuit part of electronic load; and the equivalent impedance circuit is arranged between the fuel cell and the control circuit. The DSP processor carries out correlation processing on the received voltage and current information, so that in the whole cycle of switching on and switching off a first power switching tube T1 and a second power switching tube T2, the invention realizes the control on the output current and output power of the fuel cell, and solves the defect that in the testing process, when the fuel cell stack operation enters a concentration polarization area, undervoltage protection is required for the fuel cell.
Description
technical field [0001] The invention relates to an electronic load controller suitable for a fuel cell test system. Background technique [0002] In December 2007, the Dalian University of Technology's master's degree thesis disclosed "Research on Micro-miniature Fuel Cell Test System". On pages 13 and 14 it is stated that the electronic load is part of the fuel cell test system. The electronic load is responsible for simulating load changes under various conditions, while monitoring and controlling the fuel cell's output voltage, current, power, and load resistance changes and other operating parameters. [0003] In the master's degree thesis of Chengdu University of Electronic Science and Technology in May 2007, "an electronic load design of a fuel cell test system" was disclosed. The composition of the electronic load is explained on pages 7, 8, and 9. [0004] The main evaluation indicators of fuel cell stack output characteristics include output external characterist...
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IPC IPC(8): G01R31/36
Inventor 齐铂金杜青徐国宁
Owner BEIHANG UNIV