Parallel system based on switching stabilized voltage supply and switching stabilized current supply

A technology of switching regulated power supply and regulated power supply, applied in the field of parallel system, which can solve the problems of adding power modules, damage, output characteristic difference, etc., and achieve high efficiency

Inactive Publication Date: 2017-06-20
李福来
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Problems solved by technology

However, there are differences in output characteristics between parallel switching power supply modules, resulting in a power supply parallel system where one power module will work at full load, while the other power module has a small output or does not work, which will increase the probability of damage to the power module, and even damage in severe cases. Electrical equipment

Method used

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  • Parallel system based on switching stabilized voltage supply and switching stabilized current supply
  • Parallel system based on switching stabilized voltage supply and switching stabilized current supply
  • Parallel system based on switching stabilized voltage supply and switching stabilized current supply

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Embodiment Construction

[0013] exist figure 1 In , a voltage source and a current source are connected in parallel at the output to supply power to the same load. The DC output voltage U of the power supply system 0 =(8.0±0.4)V, load current I 0 When changing from 1.0 to 3.5A, the output current of the two power supplies can be distributed according to the specified ratio within the range of 0.5 to 2.0A. Under the working state of rated output power, the efficiency of the power supply system shall not be lower than 60%.

[0014] exist figure 2 In, the regulated power supply E 1 It is a closed-loop control unit, using the parallel voltage sampling method, point A is the voltage stabilization point, R 1 , R 2 It is the voltage output sampling resistor, which is fed back from the FB of the voltage stabilization control unit after voltage division. Steady current power supply I 2 It is also a closed-loop control unit, using the series current sampling method, point B is the current steady flow p...

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Abstract

A parallel system based on a switching stabilized voltage supply and a switching stabilized current supply comprises a switching stabilized voltage supply circuit, a switching stabilized current supply circuit and a single-chip microcomputer control circuit. The switching stabilized current supply circuit adopts a series sampling method. The single-chip microcomputer control circuit has effects of comprehensive control of a supply system, human-machine interaction, and system work state detection. The parallel system based on a switching stabilized voltage supply and a switching stabilized current supply is powered by a switching stabilized voltage supply and an adjustable switching stabilized current supply parallel system, uses a method of prorating output current after connecting in parallel a voltage source and a current source at the output ends, solves a problem that a supply system is unstable in output after switching power supplies are connected in parallel. The power supply system is modular, large in capacity, high in efficiency and high in reliability.

Description

technical field [0001] The invention relates to a parallel system based on a switching steady-voltage power supply and a switching steady-current power supply. Background technique [0002] According to the power supply demand of DC low-voltage electrical equipment, it is a better way to meet the power supply demand by using the power supply system composed of DC-DC switching power supply in parallel to increase the power supply, so as to realize the modularization and large-scale of the power supply system. capacity, high efficiency and high reliability. However, there are differences in output characteristics between parallel switching power supply modules, resulting in a power supply parallel system with one power module working at full load, and the other power module has a small output or does not work, which will increase the probability of damage to the power module, and even damage in severe cases. Electrical equipment. Contents of the invention [0003] In order...

Claims

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Application Information

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IPC IPC(8): H02M3/10
CPCH02M3/10H02M1/0067
Inventor 李福来
Owner 李福来
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