KR20160001972A - Uninterruptible power supply - Google Patents
Uninterruptible power supply Download PDFInfo
- Publication number
- KR20160001972A KR20160001972A KR1020140080569A KR20140080569A KR20160001972A KR 20160001972 A KR20160001972 A KR 20160001972A KR 1020140080569 A KR1020140080569 A KR 1020140080569A KR 20140080569 A KR20140080569 A KR 20140080569A KR 20160001972 A KR20160001972 A KR 20160001972A
- Authority
- KR
- South Korea
- Prior art keywords
- power
- load
- uninterruptible
- supplied
- esc
- Prior art date
Links
Images
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Abstract
In the present invention, when the UPS is performing the offline uninterruptible operation mode or performing the online uninterruptible eco operation mode, the power is supplied to the load through the idle bit, and when the power failure occurs, the backup power is supplied through the S- It is solved that the power source can not be supplied with a stable power to the load shut down, thereby enabling normal non-fast switching. In addition, the uninterruptible power supply can be implemented at a lower cost, and power can be supplied to the load through the ESC in the initial state of driving to prevent the idle bit from being damaged by the peak current.
Description
The present invention relates to an uninterruptible power supply apparatus, and more particularly, to an uninterruptible power supply apparatus capable of preventing a short current from flowing in an off-line uninterruptible operation mode or an on-line uninterruptible eco operation mode of an off-line uninterruptible power supply apparatus.
Generally, an uninterruptible power supply (UPS) automatically and stably adjusts the voltage and frequency in the presence of power supply voltage or frequency fluctuations, and continuously supplies the power to the load in the event of a power failure. Lt; / RTI >
In recent years, demand for uninterruptible power supplies has been increasing due to the need for reliable system operation in financial, broadcasting, and industrial fields.
1 is a block diagram of a conventional uninterruptible power supply. As shown in FIG. 1, the
The
The
On the other hand, since power is not supplied through the grid terminal (GRID) when a power failure occurs, power can not be supplied to the load (150) through the first ESC part (110A).
However, the direct current power stored in the
Therefore, even when a power failure occurs, it is possible to continuously supply power to the
However, in the power failure mode, a short current may flow through the
In this way, the conventional uninterruptible power supply unit can flow a short current through the S / S unit due to the electrical characteristics of the ESC in the off-line uninterruptible operation mode or the online uninterruptible eco operation mode, thereby shutting down the inverter and providing a stable power supply to the load There is a problem. In other words, there is a problem that normal non-fast switching is not possible.
A problem to be solved by the present invention is to supply power to a load through an IGBT (Insulated Gate Bipolar Mode Transistor) in an off-line uninterruptible operation mode or an on-line uninterruptible eco operation mode of an off-line uninterruptible power supply, And the backup power is supplied to the load to enable the non-fast switching.
According to an aspect of the present invention, there is provided an uninterruptible power supply comprising: a first ESC unit for supplying power to a load in an off-line uninterruptible operation mode or an on-line uninterruptible eco operation mode; An idle bit for supplying power to the load after an initial driving state has elapsed; A bidirectional power converter for rectifying an AC power supplied through a grid terminal in a normal driving state to charge a backup battery or converting a DC power supplied from the backup battery into an AC power and outputting the AC power to the grid terminal; An inverter for converting AC power supplied from the backup battery into AC power when a power failure occurs; A second escalator for supplying power from the inverter to the load when a power failure occurs; And a control unit for outputting gate control signals to the first, second and third idle units, and controlling the driving of the first, second and third idle units, and the idle unit, .
In the present invention, when the uninterruptible power supply unit performs the off-line uninterruptible operation mode, performs the on-line uninterruptible eco operation mode, or supplies power to the load through the idle bit on normal operation, The inverter is shut down and the stable power supply can not be supplied to the load. Thus, there is an effect that normal non-fast switching can be performed.
In addition, by supplying power to the load through the idle bit, the uninterruptible power supply can be implemented at a lower cost.
In addition, in the initial state of driving, power is supplied to the load through the ESC, so that there is an effect that the idle bit can be prevented from being damaged by the peak current.
1 is a block diagram of a conventional uninterruptible power supply.
2 is a block diagram of an uninterruptible power supply according to an embodiment of the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 2 is a block diagram of an uninterruptible power supply according to an embodiment of the present invention. As shown in FIG. 2, the
A
When the
The reason for supplying power to the
The
At this time, the
Conversely, the
As described above, the
On the other hand, when a power failure occurs in the UPS 200 at an arbitrary point in time, the
Accordingly, after the power charged in the
Therefore, since the
Although the preferred embodiments of the present invention have been described in detail above, it should be understood that the scope of the present invention is not limited thereto. These embodiments are also within the scope of the present invention.
200: Uninterruptible
210B: second escull part 220: azibitibu
230: Bi-directional power converter 240: Backup battery
250: Inverter 260: Load
270:
Claims (6)
An idle bit for supplying power to the load after an initial driving state has elapsed;
A bidirectional power converter for rectifying an AC power supplied through a grid terminal in a normal driving state to charge a backup battery or converting a DC power supplied from the backup battery into an AC power and outputting the AC power to the grid terminal;
An inverter for converting AC power supplied from the backup battery into AC power when a power failure occurs;
A second escalator for supplying power from the inverter to the load when a power failure occurs; And a control unit for outputting gate control signals to the first, second and third idle units, and controlling the driving of the first, second and third idle units, and the idle unit, Wherein the uninterruptible power supply unit includes an uninterruptible power supply.
Wherein the time of the driving initial state is a preset time on the control unit.
Wherein the first ESC part comprises a first ESC and a second ESC that are connected in parallel between the grid terminal and the input terminal of the load in opposite directions to each other.
Wherein the idle bit unit includes a first idioti and a second idioti connected in series between the grid terminal and the input terminal of the load.
Wherein the first idiotti is connected in parallel with the first diode and the second idioti is connected in parallel with the second diode.
Wherein the second ESC part includes a third ESC and a fourth ESC that are connected in series between the output terminal of the inverter and the input terminal of the load in a reverse direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140080569A KR20160001972A (en) | 2014-06-30 | 2014-06-30 | Uninterruptible power supply |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140080569A KR20160001972A (en) | 2014-06-30 | 2014-06-30 | Uninterruptible power supply |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20160001972A true KR20160001972A (en) | 2016-01-07 |
Family
ID=55168702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020140080569A KR20160001972A (en) | 2014-06-30 | 2014-06-30 | Uninterruptible power supply |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20160001972A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106602701A (en) * | 2016-11-16 | 2017-04-26 | 北京圣福伦科技有限公司 | Financial equipment uninterruptible power supply circuit and power supply method |
WO2020022693A1 (en) * | 2018-07-27 | 2020-01-30 | (주)신아이엔지 | Power switchover switch |
WO2022255711A1 (en) * | 2021-06-01 | 2022-12-08 | (주)신아이엔지 | Uninterruptible power supply device having independent bypass function |
-
2014
- 2014-06-30 KR KR1020140080569A patent/KR20160001972A/en not_active Application Discontinuation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106602701A (en) * | 2016-11-16 | 2017-04-26 | 北京圣福伦科技有限公司 | Financial equipment uninterruptible power supply circuit and power supply method |
WO2020022693A1 (en) * | 2018-07-27 | 2020-01-30 | (주)신아이엔지 | Power switchover switch |
WO2022255711A1 (en) * | 2021-06-01 | 2022-12-08 | (주)신아이엔지 | Uninterruptible power supply device having independent bypass function |
KR20220162564A (en) * | 2021-06-01 | 2022-12-08 | (주)신아이엔지 | Uninterruptible Power Supply with independent bypass function |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10637283B2 (en) | Power supply system and method | |
US11073807B2 (en) | Method and apparatus for activation and de-activation of power conditioners in distributed resource island systems using low voltage AC | |
US9716408B2 (en) | Redundant residential power sources | |
CN100474736C (en) | Device for supplying uninterruptible power | |
US20120139345A1 (en) | Control method of hybrid power battery charger | |
JP5536279B1 (en) | Power storage device | |
CN111725879B (en) | Light-storage combined power supply mobile energy storage system and control method thereof | |
US9059643B2 (en) | Switching configuration and method for the production of an alternating voltage from at least supply terminals with temporally variable output DC voltage | |
US20130002027A1 (en) | Uninterruptible power supply | |
KR20160001972A (en) | Uninterruptible power supply | |
KR102233773B1 (en) | System for converting power and method for controlling the system | |
KR20140075472A (en) | Grid connected off line ac ups | |
JP6671853B2 (en) | Power conversion device and industrial machine using the same | |
KR101493774B1 (en) | Power Converter including Bidirectional Bypass Switching Circuit | |
US20200099249A1 (en) | Optimized structure of a dc voltage system and method in the event of failure of the supplying network | |
CN111146860A (en) | Power supply device and power supply system | |
WO2012063667A1 (en) | Dc power supply system | |
JP6707309B2 (en) | Power supply system | |
US9583974B1 (en) | Uninterruptible power supply for an electric apparatus | |
CN104838555A (en) | Power quality issue mitigation through hybrid grid | |
JP6210952B2 (en) | Power supply system | |
WO2018037591A1 (en) | Power conversion system and arc-extinguishing method for bidirectional switch | |
WO2013121899A1 (en) | Electrical apparatus | |
KR101522305B1 (en) | Voltage sag protector having a reverse current preventing function | |
JP2017051017A (en) | Uninterruptible power supply and control method for uninterruptible power supply |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
A302 | Request for accelerated examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |