Bus voltage control method, system and equipment and storage medium
A bus voltage control, bus voltage technology, applied in the field of systems, equipment and storage media, and bus voltage control methods, can solve problems such as increased energy loss, full-load efficiency lower than 95.5%, and reduced full-load efficiency
Active Publication Date: 2019-08-30
ZHANGZHOU KEHUA ELECTRIC TECH CO LTD
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Problems solved by technology
However, this method will increase energy loss because the bus voltage needs to be kept at a high value, and it will also seriously reduce the full-load efficiency
Especially for high-indicator UPS products, the dynamic voltage transient range is required to be within 3%, and the output voltage should be restored to within 1% of the output voltage before the sudden change within 20ms, and the full-load efficiency should not be lower than 95.5%.
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[0038] The core of the present invention is to provide a bus voltage control method, which takes full load efficiency into account when dealing with dynamic voltage transients.
[0039] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0040] Please refer to figure 1 , figure 1 It is an implementation flowchart of a bus voltage control method in the present invention, and the method is applied in a UPS system, comprising the following steps:
[0041] Step S101: A...
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The invention discloses a bus voltage control method, which is applied to a UPS system and comprises the steps of acquiring load current and bus voltage; controlling the bus voltage by taking a presetno-load bus voltage value as the target quantity when the acquired load current reaches the preset on-load current so as to enable the bus voltage to reach the no-load bus voltage value; and controlling the bus voltage by taking a preset full-load bus voltage value as the target quantity when the acquired load current reaches the preset full-load current so as to enable the bus voltage to reach the full-load bus voltage value, wherein the no-load bus voltage value is greater than the full-load bus voltage value. The scheme of the invention takes full-load efficiency into account when dealingwith dynamic voltage transients. The invention further discloses a bus voltage control system, bus voltage control equipment and a storage medium which have the corresponding technical effects.
Description
technical field [0001] The present invention relates to the technical field of electric power control, in particular to a bus voltage control method, system, equipment and storage medium. Background technique [0002] In the UPS (Uninterruptible Power Supply, uninterruptible power supply) system, it is usually necessary to stabilize the output voltage at 220V, which means that the DC bus voltage needs to reach at least 311V, and considering factors such as loss, the bus voltage usually needs to be > 311V. [0003] However, when the load suddenly increases, the bus voltage will drop to a certain extent, especially when the load suddenly changes from no load to full load, and the drop will be the highest, and it will return to the normal value after a certain period of time. If the bus voltage drops below 311V, the output voltage will not be stable at 220V, which is often called dynamic voltage transient. [0004] For this kind of dynamic voltage transient situation, the t...
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IPC IPC(8): H02J3/12
CPCH02J3/12
Inventor 郭雪萌王定富黄毅
Owner ZHANGZHOU KEHUA ELECTRIC TECH CO LTD