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Quick response closed-loop compensation circuit and method for tail end voltage of power supply cable

A cable end, power supply technology, applied in the direction of adjusting electrical variables, instruments, control/regulating systems, etc., can solve the problem of increasing the output cable diameter and cable voltage drop, etc., to improve the current sampling speed and calculation speed, fast voltage drop compensation Effect

Pending Publication Date: 2022-04-26
北京蓝军电器设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem of the cable voltage drop generated by the output cable that cannot be solved by increasing the diameter of the output cable due to the limitation of the load connector, the present invention provides a fast-response closed-loop compensation circuit and method for the voltage at the end of the power supply cable

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  • Quick response closed-loop compensation circuit and method for tail end voltage of power supply cable

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Embodiment Construction

[0033] Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0034] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentioned throughout the spe...

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Abstract

The invention discloses a quick response closed-loop compensation circuit and method for the tail end voltage of a power supply cable. The problem that cable voltage drop generated by an output cable cannot be solved by increasing the diameter of the output cable is solved. The input end of an inverter in the circuit is connected with an external power supply, the output end of the inverter is connected with an inverter output cable, and the inverter output cable is connected with an external load; the input end of the current acquisition module is connected with an inverter output cable, and the output end is connected with the processor; the input end of the voltage feedback conditioning module is connected with an inverter output cable, and the output end of the voltage feedback conditioning module is connected with the PI regulator; the input end of the man-machine operation unit is connected with the inverter, and the output end is connected with the input end of the processor; the output end of the processor is connected with the PI regulator; the input end of the inner loop current sampling module is connected with the inverter, and the output end is connected with the P regulator; the output end of the PI regulator is connected with the P regulator, and the P regulator is connected with the inverter through the PWM generator.

Description

technical field [0001] The invention relates to a closed-loop compensation circuit, in particular to a fast-response closed-loop compensation circuit and method for terminal voltage of a power supply cable. Background technique [0002] In some power equipment power supply industries, the output of the power equipment is connected to the load through a certain length of cable. When the output current flows through the output cable, a certain voltage drop will be generated on the output cable, especially when the output voltage is only tens of V, and the output current exceeds 1000A, the cable voltage drop generated by the output cable will seriously affect the power supply of the load quality. For example: the rated output voltage of a power supply device is DC28V, and it is connected to the load through a 20-meter output cable, assuming that the output cable specification is 120mm 2 After the copper wire (internal resistance is 0.161Ω / km) flows through 400A, 800A, 1200A, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
CPCG05F1/561
Inventor 段益锋罗世文罗来明党浩闯陶祎明
Owner 北京蓝军电器设备有限公司
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