Test method of micro-power consumption DC power supply device
A technology of DC power supply and test method, which is applied in the field of micro-power consumption DC power supply device testing, which can solve the problems of high investment cost of test equipment, bulky test equipment, and inability to perform full-load tests on equipment, achieving obvious energy-saving effects and eliminating heat dissipation device, strong social and economic benefits
Inactive Publication Date: 2011-05-04
CRRC DALIAN CO LTD
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Problems solved by technology
The second is that the test equipment is bulky, occupies a large area, and the input cost of test equipment is high
Taking the train power supply device test system as an example, a power frequency 600kW transformer is required, the primary side voltage is 6000VAC, and the secondary side voltage is 2050VAC. The transformer is large in size and high in cost.
The third is that the capacity of the power grid is required to be large enough. For some small and medium-sized enterprises, it is impossible to conduct a full-load test on the equipment when the capacity of the power grid is limited.
Method used
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[0014] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. See attached figure 1 , the DC power feedback device is a DC-DC conversion circuit, which is connected to the circuit as a load of the tested DC power supply device, and the output terminal of the conversion circuit is connected to the power input terminal of the tested DC power supply device.
[0015] See attached figure 2 , the main program is interrupted by the timer and executed every 5ms. The main program starts from frame 1 and enters frame 2 for initialization. Enter box 3, collect sensor signal and switch signal. Enter frame 4 to judge whether the start switch is closed, if not, then enter frame 7, and end the program; if yes, then enter frame 5, and judge whether the input voltage is greater than the lower limit value, if not, then enter frame 7, and end the program; if If yes, go to box 6, and after executing the energy feedback current clos...
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The invention relates to a test method of a micro-power consumption DC power supply device, which is characterized in that a DC-DC conversion circuit is used as the load of a tested DC power supply device, the output end of the conversion circuit is connected to the power input end of the tested DC power supply device to regulate the set value of the output current of the DC-DC conversion circuit, a pulse width control signal of the DC-DC conversion circuit is generated by the PI operation of the current regulator so as to control the output current of the DC-DC conversion circuit. The test method reduces the power consumption, has low cost and small volume, and has low requirement for the capacity of the power system.
Description
technical field [0001] The invention belongs to the technical field of production test of a DC power supply device, and in particular relates to a test method of a micro-power consumption DC power supply device. Background technique [0002] DC power supply devices are widely used in various fields of industry. Taking locomotives as an example, DC110V power supply devices, DC600V train power supply devices, etc. are often used. The power of DC110V power supply devices is generally 10kW, and the power of train power supply devices is generally 400 -600kW. Most of the current DC power supply device production test and assessment equipment is an energy-consuming system, that is, when the system is working, a resistive load is used to consume energy, so as to achieve the purpose of testing or assessing the performance and reliability of the equipment. Although such a system can achieve the above-mentioned objectives, there are many disadvantages. First, the energy waste is ser...
Claims
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IPC IPC(8): G01R31/40
Inventor 蔡志伟
Owner CRRC DALIAN CO LTD