AC/DC adaptive redundant maintenance power supply center

Abstract

An AC-DC adaptive redundant maintenance power supply center comprises a printed circuit substrate, and is characterized in that an A redundant unit function block, a B redundant unit function block and a switching coordination circuit are arranged on the printed circuit substrate; each of the A redundancy unit function block and the B redundancy unit function block comprises an anti-interference circuit used for reducing high-frequency interference of a power grid. The alternating current and direct current adaptive circuit is used for converting alternating current into pulsating direct current; wherein the high-frequency transformer is used for generating high-frequency voltage, the high-voltage controller is used for outputting high-frequency rectangular waves, the power control circuitis used for cooperatively controlling the high-frequency transformer to generate the high-frequency voltage, and the positive power rectifying and filtering loop and the negative power rectifying andfiltering loop are used for rectifying and filtering output direct current. The switching coordination circuit comprises a redundancy switching circuit used for realizing instantaneous switching between an A redundancy unit function block and a B redundancy unit function block, an output anti-backflow circuit and an output voltage boosting and reducing circuit.

Description

technical field [0001] The invention relates to the technical field of electrical maintenance and overhaul equipment, in particular to an AC-DC self-adaptive redundant overhaul power supply center. Background technique [0002] In the power industry, the repair and maintenance of electrical instruments and meters is an operation that takes the longest time in addition to production operations. During these repairs, the convenience, diversity and reliability of electricity for repairs Few people pay attention to it. Most of the power used is considered as a temporary power supply. Not enough attention is paid to it, which often leads to irregular power consumption on site, resulting in safety accidents and damage to the tested equipment. [0003] With the popularization of industrial automation and intelligence, there are many types of power electronics and instrumentation equipment for maintenance, and their respective working voltages are also diverse. There are AC and DC, ...

AI Technical Summary

Problems solved by technology

[0002] In the power industry, the repair and maintenance of electrical instruments and meters is an operation that takes the longest time in addition to production operations. During these repairs, the convenience, diversity and reliability of electricity for repairs Few people pay attention to it. Most of the power used is considered as a temporary power supply. Not enough attention is paid to it, which often leads to irregular power consumption on site, resulting in safety accidents and damage to the tested equipment.

[0003] With the popularization of industrial automation and intelligence, there are many types of power electronics and instrumentation equipment for maintenance, and their respective working voltages are also diverse. There are AC and DC, and DC is divided into various voltage levels. However, for these The maintenance of the equipment is carried out on-site maintenance, inspection and repair. The maintenance operators need to constantly replace various maintenance power supply devices to obtain the corresponding working power supply.

This mode brings a lot of inconvenience to maintenance work

[0004] In addition, during the maintenance period, there are many and miscellaneous power consumption units on site, and the AC power voltage fluctuates greatly, which poses a threat to the safety of power consumption of instruments and test equipment. For loads that require long-term stable power supply, switching power supplies are usually used It adopts two independent switching power supplies and then bridges them through the external circuit to form a redundant power supply, and then uses the dual power supply switching device mechanism to automatically switch. This redundant switching mode is based on the cooperation between devices, so the switching time is consuming If the time is long, it will cause the risk of power failure for sensitive loads. Once the power is cut off, the load will easily lose power, causing serious consequences.

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