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UPS bypass voltage regulating system

A voltage regulation system and bypass technology, which is applied to circuit devices, electrical components, and AC power input is converted into AC power output, etc. It can solve the problem that the AC uninterruptible power supply system does not have an automatic voltage regulation bypass system, and the quality of power supply cannot be obtained. It can effectively guarantee the problems of large fluctuation of UPS output voltage, and achieve the effect of wide application range, high amplitude precision and wide voltage regulation range.

Pending Publication Date: 2021-11-26
HUANENG SHANTOU HAIMEN POWER GENERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing AC uninterruptible power supply system (UPS) does not have a bypass system with an automatic voltage regulation function that matches it during installation and use.
When the external power grid voltage fluctuates or the load changes, the UPS output voltage fluctuates greatly, the stability is insufficient, and the power supply quality cannot be effectively guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1-big boost treatment:

[0046] Such as figure 2 As shown, when the system detects that the input voltage of the AC uninterruptible power supply system becomes low, and the input voltage is 180V-210V, the UPS bypass voltage regulation system of the present invention is automatically adjusted to a large boost gear, such as figure 2 As shown, the winding linkage adjustment switch 14 operates, and the winding linkage adjustment switch 14 adjusts the winding of the step-down transformer regulator 2 to the highest position through the adjustment part 16, and adjusts the winding of the step-up transformer regulator 1 to the lowest position. At the same time, the first The thyristor 5, the second thyristor 6, and the fourth thyristor 8 are closed, and the third thyristor 7 is opened, so that the step-down transformer regulator 2 does not operate, and the step-up transformer regulator 1 operates. Through the bypass voltage regulation system, the AC uninterruptible...

Embodiment 2

[0048] Embodiment 2-small boost treatment:

[0049] Such as image 3 As shown, when the system detects that the input voltage of the AC uninterruptible power supply system is slightly lower, and the input voltage is 210V-219V, the UPS bypass voltage regulation system of the present invention is automatically adjusted to a small boost gear, such as image 3 As shown, the winding linkage adjustment switch 14 moves to the middle position, the winding linkage adjustment switch 14 adjusts the winding of the step-down transformer regulator 2 to the middle position through the adjustment part 16, and adjusts the winding of the step-up transformer regulator 1 to the middle position, The winding length of the step-up transformer regulator 1 connected to the system end is greater than the winding length of the step-down transformer regulator 2 winding connected to the system end, so that the step-up voltage change of the step-up transformer regulator 1 is greater than that of the step-d...

Embodiment 3

[0050] Embodiment 3-depressurization treatment:

[0051] Such as Figure 4 As shown, when the system detects that the input voltage of the AC uninterruptible power supply system becomes high, and the input voltage is 220V-230V, the UPS bypass voltage regulation system of the present invention is automatically adjusted to downshift, as Figure 4 As shown, the winding linkage adjustment switch 14 operates, the winding linkage adjustment switch 14 adjusts the winding of the step-down transformer regulator 2 to the lowest position through the adjustment part 16, and adjusts the winding of the step-up transformer regulator 1 to the highest position, and at the same time the second The thyristor 6, the third thyristor 7 and the fourth thyristor 8 are closed, and the first thyristor 5 is disconnected, so that the step-up transformer regulator 1 does not operate, and the step-down transformer regulator 2 operates, Through the bypass voltage regulation system, the AC uninterruptible p...

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Abstract

The invention discloses a UPS bypass voltage regulating system. The system comprises a bypass on-off switch, an isolation transformer, a step-up voltage transformation regulator, a step-down voltage transformation regulator, a self-regulation protection system and a winding linkage regulation switch. By additionally arranging a silicon controlled rectifier regulation control group, and a measurement inspection mechanism is connected and combined with the step-up voltage transformation regulator and the step-down voltage transformation regulator, the bypass voltage regulation system is formed by combining a self-regulating protection system, an isolation transformer is arranged and connected between an input winding and an output winding, and meanwhile, a current transformer and a winding linkage regulating switch are arranged at the output end of the bypass voltage regulating system. The bypass voltage regulation system has the beneficial effects that the bypass voltage regulation system can automatically keep the stability of the output voltage, the voltage regulation is stable, and reliable and stable power supply can be ensured. The bypass voltage regulation system has the advantages of high regulation and control flexibility, large accessible load capacity, wide voltage regulation and control range, low regulation energy loss, high output voltage amplitude precision, no waveform distortion and the like.

Description

technical field [0001] The present invention relates to the technical field of UPS supporting systems, and more specifically, relates to a UPS bypass pressure regulating system. Background technique [0002] UPS (Uninterruptible Power System / Uninterruptible Power Supply), that is, AC uninterruptible power supply, is a system that connects batteries (mostly lead-acid maintenance-free batteries) with the host, and converts DC power into commercial power through modular circuits such as the host inverter. equipment. It is mainly used to provide stable and uninterrupted power supply to a single computer, computer network system or other power electronic equipment such as solenoid valves and pressure transmitters. [0003] When the mains input is normal, the UPS will stabilize the mains and supply it to the load. At this time, the UPS is an AC voltage stabilizer, and it also charges the battery inside the machine; when the mains is interrupted (emergency blackout) At this time,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P13/08H02J9/06
CPCH02P13/08H02J9/062H02J9/067
Inventor 徐兴国蔡国忠张峰黄旭鹏王庆林张家宽陈明光周扬
Owner HUANENG SHANTOU HAIMEN POWER GENERATION CO LTD
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