CN209375234U - A kind of DC UPS - Google Patents
A kind of DC UPS Download PDFInfo
- Publication number
- CN209375234U CN209375234U CN201822135807.2U CN201822135807U CN209375234U CN 209375234 U CN209375234 U CN 209375234U CN 201822135807 U CN201822135807 U CN 201822135807U CN 209375234 U CN209375234 U CN 209375234U
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- voltage
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- ups
- battery pack
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Abstract
The utility model discloses a kind of DC UPSs, PID controller is built-in with including DC UPS input terminal, DC/DC converter, DCL DC filter, DC UPS output end, battery pack, voltage transmitter and batteries management system BMS, the DC/DC converter；The connection of the DC bus of the DC UPS input terminal and frequency converter, the DC UPS output end are connect with battery pack, and the voltage transmitter is connected between DC/DC converter and battery pack, are used for collection voltages data.The utility model is powered to frequency changer direct current bus, so that frequency converter is had AC and DC two-way redundant power supply, high-efficient, high reliablity, response is fast, and redundancy-type is strong, and noise is small, at low cost.
Description
Technical field
The utility model relates to a kind of power supply more particularly to a kind of DC UPSs.
Background technique
Short time voltage interruption (Voltage Interruption) refers to that a phase or ployphase voltages instantaneously drop into 0.1 times of volume
Constant voltage is hereinafter, and the duration is 3 seconds to 1 minute.Temporarily the low-voltage after drop will lead to the reclosing and contactor of route
Undervoltage tripping.Voltage dip/rapid drawdown (Voltage Sag) is that voltage effective value is down to the 10% of nominal value (NominalValue)
To 90%, and the duration is 10ms to 1min (Typical duration is 10ms~600ms).Short time voltage interruption and voltage
Temporarily drop, will be stopped working using electric equipment, or produced product quality is caused to decline.In general, industrial process equipment is to short
Time voltage interrupts and voltage dip is especially sensitive because in equipment any one element can all make since power supply goes wrong it is whole
A process shuts down.These industrial process are related to automobile, semiconductor, plastics, petrochemical industry, weaving, optical fiber, beverage dairy industry, movement
The fields such as communication, the important equipment often influenced by voltage dip have cooling device control, direct current generator driving, programmable logic control
Device (PLC) processed, mechanical device, variable speed drivP etc..
When generation short trouble, induction machine starting, lightning stroke, switch operation, frequency converter and capacitor in electrical power trans mission/distribution system
When the events such as the switching of group, it can cause voltage dip.Wherein, short trouble, induction machine starting and lightning stroke are to cause voltage
Temporarily the main reason for drop.Insulator arc-over caused by when lightning stroke or over the ground electric discharge can be such that protective device acts, so as to cause power supply
Voltage dip.This temporary drop coverage is big, and the duration is generally more than 100ms.When motor direct-on-line starting, need from power supply
500%~800% when the current value drawn is at full capacity, when this high current flows through system impedance, it will cause voltage prominent
So decline.Short trouble may cause system Remote feeding voltage is more serious to fall, and it is right in industrial processes to influence
The normal work of the electrical equipment of voltage-sensitive, or even cause serious economic loss.Protective device cut off failure, malfunction and
Operations staff's maloperation etc. can cause power failure.It, should when route of the protective device tripping cutting to a certain customer power supply
To occur voltage interruption in power supply line.Such case generally only just will appear when breaking down on the route, and adjacent
Different degrees of voltage dip will all occur on non-fault line.
Although traditional exchange UPS also can satisfy this working condition requirement, there is low efficiency, low-response, at high cost etc. to lack
Point.
With the development of power electronics technology, frequency converter is more next with its excellent speed adjusting performance and significant energy-saving effect
It is more used by more modern enterprises, but since the network voltage of some enterprises is unstable, causes frequency converter in use
Produce new problem-frequency converter low-voltage tripping.Low-voltage be usually all in short-term, traditional control system is influenced it is smaller,
And low-voltage tripping can be then generated to frequency converter causes motor to stop, and influences to produce, and especially influences on some crucial motors especially tight
Weight.Every time since power grid shakes electricity, non-programmed halt caused by crucial motor frequency conversion low-voltage tripping can all cause very big to enterprise
Economic loss, few then hundreds of thousands are how then millions of.
Utility model content
The utility model is to provide a kind of DC UPS to solve above-mentioned deficiency.
The above-mentioned purpose of the utility model is realized by technical solution below: a kind of DC UPS, including
DC UPS input terminal, DC/DC converter, DCL DC filter, DC UPS output end, battery pack, electricity
Pressure transmitter and batteries management system BMS, the DC/DC converter are built-in with PID controller；The DC UPS
Input terminal (DC+/DC-) is connect with the DC bus of frequency converter, the DC UPS output end (ES+/ES-) and battery
Group connection, the voltage transmitter are connected between DC/DC converter and battery pack, are used for collection voltages data.
Working principle of the utility model is: once power grid decompression or decompression, DC/DC converter will be the voltage increases of battery
It is transferred to frequency converter (battery discharge) to voltage level needed for the frequency converter of front end, while by the electric energy of battery, to drive electricity
Motivation operating, avoids the generation and economic loss of production accident.When network voltage restores, DC/DC converter will stop battery
Electric discharge, and start battery charging, floating charge state is maintained after battery is fully charged, therefore do not need additional battery charger.
Voltage transmitter passes through the voltage of detection battery, while PID controller in charge and discharge process, can be precisely controlled battery charging and discharging
Voltage；The utility model has the limitation functions such as current limit, voltage limitation, power limit simultaneously；And over-voltage, under-voltage, overcurrent,
The functions such as the protection such as high temperature, low temperature.
The utility model compared with prior art the advantages of be: the utility model be to frequency changer direct current bus power, make
Frequency converter has AC and DC two-way redundant power supply, while not needing individual charging equipment and charging to battery；It is electric in charge and discharge process
Pressure transmitter passes through the voltage of detection battery, while PID controller, can be precisely controlled the voltage of battery charging and discharging；Have simultaneously
The limitation functions such as current limit, voltage limitation, power limit；And the functions such as protection such as over-voltage, under-voltage, overcurrent, high temperature, low temperature.
In short, it has many advantages, such as that high-efficient, high reliablity, response is fast, redundancy-type is strong, noise is small, at low cost.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Fig. 2 is the DC UPS of the utility model and the circuit connection diagram of frequency converter.
Specific embodiment
The utility model is described in further detail below with reference to embodiment.
As shown in Figure 1 and Figure 2, a kind of DC UPS, including DC UPS input terminal, DC/DC transformation
Device, DCL DC filter, DC UPS output end, battery pack, voltage transmitter and batteries management system BMS, institute
It states DC/DC converter and is built-in with PID controller；The direct current of DC UPS input terminal (DC+/DC-) and frequency converter
Bus connection, the DC UPS output end (ES+/ES-) connect with battery pack, and the voltage transmitter is connected to
Between DC/DC converter and battery pack, it to be used for collection voltages data.
Working principle of the utility model is: once power grid decompression or decompression, DC/DC converter will be the voltage increases of battery
It is transferred to frequency converter (battery discharge) to voltage level needed for the frequency converter of front end, while by the electric energy of battery, to drive electricity
Motivation operating, avoids the generation and economic loss of production accident.When network voltage restores, DC/DC converter will stop battery
Electric discharge, and start battery charging, floating charge state is maintained after battery is fully charged, therefore do not need additional battery charger.
Voltage transmitter passes through the voltage of detection battery, while PID controller in charge and discharge process, can be precisely controlled battery charging and discharging
Voltage；The utility model has the limitation functions such as current limit, voltage limitation, power limit simultaneously；And over-voltage, under-voltage, overcurrent,
The functions such as the protection such as high temperature, low temperature.The above description is only the embodiments of the present invention for the utility model, is not intended to limit
The scope of the patents of the utility model, it is all to utilize equivalent structure or equivalent made by the utility model specification and embodiment content
Process transformation, be applied directly or indirectly in other relevant technical fields, similarly include the utility model patent protect
It protects in range.
Claims (1)
1. a kind of DC UPS, it is characterised in that: including DC UPS input terminal, DC/DC converter, DCL
DC filter, DC UPS output end, battery pack, voltage transmitter and batteries management system BMS, the DC/
DC converter is built-in with PID controller；The connection of the DC bus of the DC UPS input terminal and frequency converter, it is described straight
Stream uninterruptible power supply output end is connect with battery pack, and the voltage transmitter is connected between DC/DC converter and battery pack, is used
In collection voltages data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822135807.2U CN209375234U (en) | 2018-12-19 | 2018-12-19 | A kind of DC UPS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822135807.2U CN209375234U (en) | 2018-12-19 | 2018-12-19 | A kind of DC UPS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209375234U true CN209375234U (en) | 2019-09-10 |
Family
ID=67829715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822135807.2U Active CN209375234U (en) | 2018-12-19 | 2018-12-19 | A kind of DC UPS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209375234U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113422421A (en) * | 2021-05-27 | 2021-09-21 | 科华数据股份有限公司 | Battery device, power supply system and related control method |
| CN113422403A (en) * | 2021-05-27 | 2021-09-21 | 科华数据股份有限公司 | Battery device, power supply system and related control method |
-
2018
- 2018-12-19 CN CN201822135807.2U patent/CN209375234U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113422421A (en) * | 2021-05-27 | 2021-09-21 | 科华数据股份有限公司 | Battery device, power supply system and related control method |
| CN113422403A (en) * | 2021-05-27 | 2021-09-21 | 科华数据股份有限公司 | Battery device, power supply system and related control method |
| CN113422421B (en) * | 2021-05-27 | 2023-09-29 | 科华数据股份有限公司 | Battery device, power supply system and related control method |
| CN113422403B (en) * | 2021-05-27 | 2023-10-27 | 科华数据股份有限公司 | Battery device, power supply system and related control method |
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