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Power supply test system of output energy DC side feedback

A technology for power supply testing and output energy, applied in the field of power supply testing systems and power supply testing systems with energy feedback on the DC side, it can solve the problems of no power factor correction circuit on the input side, increased cost and volume, and harmonic interference on the grid side. Efficiency improvement, path shortening, effect of reducing harmonic interference

Inactive Publication Date: 2009-10-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing utility model patent (patent name: AC / DC switching power supply energy-saving burn-in device, patent number: ZL200420046920.9) feeds energy back to the DC bus in front of the device under test, but there is no power factor correction circuit on the input side, and at the same time The wave inverter will generate high harmonic interference on the grid side, seriously affecting the grid, requiring a large low-frequency filter, which increases the cost and volume

Method used

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  • Power supply test system of output energy DC side feedback
  • Power supply test system of output energy DC side feedback
  • Power supply test system of output energy DC side feedback

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1, a power supply test system for output energy feedback on the DC side, the device under test is an AC / DC circuit, and its system structure is as follows Figure 4 shown.

[0055] The entire system of the device under test obtains energy from the grid 10 like other electrical devices. These energies will be converted into high-voltage DC form after passing through the PFC power factor correction module 1, and the voltage is V H , and connected to the DC / AC AC power source 21 . The DC / AC DC power supply 21 changes the voltage from V H Convert to V IN Provided to the AC / DC tested equipment 31. The output voltage of the AC / DC tested device 31 is V L , connected to the DC / DC energy harvesting module 41 as a virtual electronic load, the DC / DC energy harvesting module 41 converts the voltage V L After being properly raised, it is input to the DC / DC energy feedback module 51 . The DC / DC energy feedback module 51 further increases the voltage to V H Then the...

Embodiment 2

[0068] Embodiment 2, a power supply test system for output energy feedback on the DC side, the device under test is a DC / DC circuit, and its system structure is as follows Figure 5 shown.

[0069] from Figure 5 It can be seen from the figure that the structure of the system is very similar to when the tested equipment is an AC / DC circuit (shown in Embodiment 1), except that the DC / DC power supply 22 is used instead of the DC / AC power supply 21, and the DC / DC is used as the The test equipment 32 replaces the AC / DC tested equipment 31, and the rest are the same as the first embodiment. Therefore, the rest of the system functions remain unchanged.

[0070] The DC / DC direct current power supply 22 adopts a control circuit with a relatively large bandwidth (for example, 1kHz) to convert the direct current voltage V on the high voltage direct current bus H Converted into DC / DC DC voltage required by the device under test 32 , its amplitude is adjusted according to the needs of ...

Embodiment 3

[0072] Embodiment 3, a power supply test system for output energy feedback on the DC side, the device under test is a DC / DC circuit, and its system structure is as follows Figure 6 shown.

[0073] The input end of the step-down transformer is connected to the grid 10, the output end of the step-down transformer is connected to the input end of the low-voltage PFC power factor correction module 11, and the output end of the low-voltage PFC power factor correction module 11 is connected to the input of the DC / DC tested equipment 32 The output end of the DC / DC tested equipment 32 is connected to the input end of the DC / DC energy collection and feedback module 61, the output end of the DC / DC energy collection and feedback module 61 is connected to the output of the low-voltage PFC power factor correction module 11 end connected.

[0074] Since in the actual system, the entrance of the feedback energy is determined by the voltage level of the high-voltage DC bus voltage, the inpu...

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Abstract

The invention discloses a power supply test system of output energy DC side feedback, including an equipment (3) to be tested, the test system includes a PFC power factor correction module (1), an AC or DC power supply module (2), an energy collecting module (4) and an energy feedback module (5); high-voltage DC bus of the PFC powerfactor correction module (1) is respectively connected with input terminal of the AC or DC power supply module (2) and output terminal of the energy feedback module (5); output terminal of the AC or DC power supply module (2) is connected with input terminal of the equipment (3), input terminal of the energy collecting module (4) is connected with output terminal of the equipment (3), output terminal of the energy collecting module (4) is connected with input terminal of the energy feedback module (5). Applying the system can improve energy recycling efficiency and reduce harmonic interference to power system greatly.

Description

technical field [0001] The invention relates to the technical field of energy-saving electronic products and the field of electric energy conversion and utilization of electric power electronics, and proposes a new power supply test system for electric energy feedback. More specifically, the present invention proposes a DC-side energy feedback power supply test system, which realizes the recovery and utilization of output electric energy, and can be used for various power supply tests and aging experiments. Background technique [0002] With the continuous development of power electronics technology, switching power supply is more and more widely used in modern production and life, so the market of switching power supply is also growing. The biggest advantage of switching power supplies over linear power supplies is their higher efficiency. However, in the process of design, testing and production of switching power supplies, loads need to be connected. At the current stage...

Claims

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Application Information

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IPC IPC(8): G01R31/40G01R31/42
Inventor 吴新科胡晨张军明
Owner ZHEJIANG UNIV
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