CN104065154B - Frequency changer emergency power supply system - Google Patents
Frequency changer emergency power supply system Download PDFInfo
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- CN104065154B CN104065154B CN201410250307.7A CN201410250307A CN104065154B CN 104065154 B CN104065154 B CN 104065154B CN 201410250307 A CN201410250307 A CN 201410250307A CN 104065154 B CN104065154 B CN 104065154B
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Abstract
A frequency changer emergency power supply system comprises a frequency changer formed by connecting an AC/DC rectifier and a DC/AC inverter in series, an energy storing device, a bidirectional DC/DC converter and a battery management system. Operating modes of the bidirectional DC/DC converter comprise a stopping mode, a charging mode, a discharging mode and a voltage stabilizing mode, the result of normal power supplying or occurrence of faults in a power grid is judged by a man-machine interaction module and a protection controlling and alarming module of the battery management system according to the power grid voltage detected by a voltage transformer mounted on the power grid side, and the switching of the bidirectional DC/DC converter among the operation modes is controlled. Emergence power can be supplied to an alternating load when the power grid breaks down. After the fact that the normal power supply of the voltage of the power grid is conducted for 10 s is detected by the voltage transformer mounted on the power grid side, the operating mode of the bidirectional DC/DC converter is switched to be the charging mode from the voltage stabilizing mode, an energy storing battery as a current source is connected to a direct current bus, and the reliability of frequency changer emergency power supply can be obviously improved.
Description
Technical field
The present invention relates to emergency service, more particularly to a kind of converter emergency power supply system.
Background technology
Inclusion ac/dc (alternate current/direct current, contracting in adjustable-speed drive system
Slightly word is ac/dc) (direct current/alternate current, initialism is dc/ for commutator and AC/DC
Ac) the converter of inverter, application variable-frequency driving technique changes running voltage amplitude and the frequency of ac motor, with smooth control
The torque of ac motor processed and speed.Existing converter is all to be powered using electrical network, and the power-frequency voltage of electrical network is transformed into separately
The AC energy of one frequency is powered to ac motor, once grid collapses, is necessary for stopping within a period of time for handing over
Stream motor.
Content of the invention
The technical problem to be solved is the defect making up above-mentioned prior art, provides a kind of converter to meet an urgent need and supplies
Electric system.
The technical problem of the present invention is solved by the following technical programs.
This converter emergency power supply system, including the frequency conversion being composed in series by ac/dc commutator and dc/ac inverter
Device, energy storage device, bidirectional, dc/direct current (direct current/direct current, initialism is dc/dc) conversion
Device, and battery management system,
Described ac/dc commutator, its input is connected with civil power through AC circuit breaker, and outfan is connected with dc bus
Connect, during for electrical network normal power supply, the industrial-frequency alternating current of electrical network is transformed to unidirectional current.
Described dc/ac inverter, its input is connected with dc bus, and outfan is connected with AC load, is used for
In electrical network normal power supply, the unidirectional current of described ac/dc commutator output is converted to alternating current to power for AC load, in city
When electricity breaks down, the unidirectional current that energy storage device exports is converted to alternating current to power for AC load.
Described energy storage device be used for DC load is powered, and in grid collapses maintain to AC load not between
Cut-off electricity.
Described two-way dc/dc changer is high with the isolation of parameter identical first winding and Secondary Winding including its composition
Frequency power transformer, and a high-frequency rectification/inversion unit being connected with described first winding, Secondary Winding, two second highest respectively
Frequency rectification/inversion unit, the input of the positive dc/dc conversion of a described high-frequency rectification/inversion unit is also reverse dc/dc
The outfan of conversion, is connected with described energy storage device and described battery management system respectively, a described high-frequency rectification/inversion
The outfan of the positive dc/dc conversion of unit is also the input of reverse dc/dc conversion, is connected with described dc bus, institute
State two-way dc/dc changer to be used for transmitting bidirectional energy.
The feature of this converter emergency power supply system is:
Described two-way dc/dc changer operational mode includes stop mode, charge mode, discharge mode and potentiostatic mode,
The mutual induction of voltage installed according to grid side with protection control and alarm module by the human-computer interaction module of described battery management system
Electrical network normal power supply or the result breaking down that the line voltage of device detection judges, control described two-way dc/dc changer fortune
Switching between row mode.
During electrical network normal power supply, converter normal work, it is output as AC load by electrical network power taking is rectified, after inversion and supply
Electricity, and maintain DC bus-bar voltage stable, control described two-way dc/dc to become by the human-computer interaction module of described battery management system
The operational mode of parallel operation is charge mode and discharge mode, arranges charging current value and float charge voltage value in charge mode, to institute
State energy storage device and carry out constant current/constant voltage charging, discharge current value and discharge power value are set in discharge mode, described energy storage is filled
Put and carry out constant current/power electric discharge；Simultaneously by the battery system state monitoring module real-time detection institute of described battery management system
State voltage, electric current and the temperature of energy storage device, and by the communication module of described battery management system, data is communicated by rs232
It is transferred to described two-way dc/dc changer, described two-way dc/dc changer is according to the parameter of described energy storage device, setting protection
Parameter, adjustment operational mode and output voltage are reliably protected to described energy storage device.
Line voltage is less than 0.2 times of rated voltage, and when maintaining 60s, judges grid collapses, by described battery management
The protection of system controls and alarm function module controls the respective switch changed in two-way dc/dc changer opens order by institute
State two-way dc/dc changer operational mode and potentiostatic mode switched to by one of stop mode, charge mode and discharge mode,
Now emergency power supply system accordingly switches to voltage stabilizing mode of operation by normal mode of operation, by adjusting the dutycycle of respective switch
Control described energy storage device to release energy, make DC bus-bar voltage constant, be AC load emergency service after inversion, and right
Electrical network, described energy storage device and described two-way dc/dc changer are protected itself, described electrical network is protected, including
Disconnect with electrical network in time, prevent fault incidence expansion, described energy storage device is protected, including to described energy storage device
Carry out overvoltage/undervoltage protection, overcurrent protection and overtemperature protection, and the protection of direct current overvoltage/undervoltage, direct current overcurrent protection, direct-current polarity are anti-
Connect protection, AC overcurrent protection, exchanged underfrequency protection, exchange overvoltage/undervoltage protection and exchanged underfrequency protection, described to two-way
Dc/dc changer is protected, including direct current overcurrent protection, DC over-voltage protection and direct current under-voltage protection.
Line voltage is more than 0.2 times of rated voltage, and when maintaining 10s, judges power system restoration normal power supply, by described battery
Protecting of management system controls opening sequentially of the respective switch controlling in the two-way dc/dc changer of change with alarm function module
Described two-way dc/dc changer operational mode is switched to charge mode by potentiostatic mode, the now operation of emergency power supply system
Pattern accordingly switches to normal mode of operation by voltage stabilizing mode of operation, and described energy storage device is connected to direct current in the form of current source
On bus, to improve the reliability of power supply, because, within the shorter electric network fault time, this converter emergency power supply system can be protected
Card AC load is normally run, and can significantly improve the reliability of converter emergency service.
The technical problem of the present invention is solved by technical scheme further below.
A high-frequency rectification/inversion unit in described two-way dc/dc changer, is full bridge high frequency rectification/inversion electricity
Road, including two groups of the switching tube composition of each own anti-paralleled diode of four on two brachium pontis or body endoparasitism diode
Totally four switches, by described battery management system control two groups of change totally four switches open order, realize positive dc/dc and become
Change and reverse dc/dc becomes the switching between changing jobs.
Secondary high-frequency rectification/inversion unit in described two-way dc/dc changer, its composition is whole with a high frequency with parameter
Stream/inversion unit is identical, is also full bridge high frequency rectification/inverter circuit, each own anti-including four on two brachium pontis
Two groups of the switching tube composition of parallel diode or body endoparasitism diode totally four switches, by described battery management system control
Two groups of system change totally four switches open order, realize positive dc/dc conversion and reverse dc/dc become cutting between changing jobs
Change.
Described switching tube is insulated gate bipolar translator power tube (insulated gate bipolar transistor, breviary
Word is igbt).
Described energy storage device is LiFePO4 energy-storage battery, is lithium-ion electric LiFePO4 being used as positive electrode
Pond.
Described AC load is the AC load of converter.
The AC load of described converter includes ac motor.
Described battery management system, controls and alarm including battery system state monitoring module, fault diagnosis module, protection
Functional module, battery balanced functional module, heat management functional module, data recordin module, communication module, and man-machine interaction mould
Block, described communication module includes rs485 communication interface or/and ethernet communication with host computer centralized monitoring system transmission data
Interface.
Compared with the prior art, the invention has the advantages that:
The emergency power supply system of the present invention, can be AC load emergency service when the grid collapses.In grid side peace
After the voltage transformer detection line voltage of dress recovers normal power supply 10s, two-way dc/dc changer operational mode is by voltage stabilizing mould
Formula switches to charge mode, and energy-storage battery is connected on dc bus in the form of current source, and can significantly improve converter should
The reliability of anxious power supply.
Brief description
Fig. 1 is the system composition figure of the specific embodiment of the invention；
Fig. 2 is the main circuit topological structure figure of the two-way dc/dc changer of Fig. 1.
Specific embodiment
With reference to specific embodiment and compare accompanying drawing the present invention will be described.
A kind of converter emergency power supply system as shown in Figure 1, 2, including by ac/dc commutator 2 and dc/ac inverter 3
The converter 4 that is composed in series, LiFePO4 energy-storage battery 6, two-way dc/dc changer 5, and include battery system status monitoring
Module, fault diagnosis module, protection control and alarm function module, battery balanced functional module, heat management functional module, data
Logging modle, communication module, and the battery management system 7 of human-computer interaction module, wherein communication module include collecting with host computer 9
The rs485 communication interface of middle monitoring system transmission data or/and ethernet interface.
The input of ac/dc commutator 2 is connected with civil power through AC circuit breaker 1, and outfan is connected with dc bus 10
Connect, during for electrical network normal power supply, the industrial-frequency alternating current of electrical network is transformed to unidirectional current；The input of dc/ac inverter 3 with straight
Stream bus 10 is connected, and outfan is connected with the AC load 8 of the converter including ac motor, for normal in electrical network
Unidirectional current during power supply exporting ac/dc commutator 2 is converted to alternating current and powers for AC load 8, in utility power failure
The unidirectional current that energy-storage battery 6 is exported is converted to alternating current and powers for AC load 8；LiFePO4 energy-storage battery 6 is used for straight
Current load 11 is powered, and maintains to AC load 8 uninterrupted power supply in grid collapses；Two-way dc/dc changer 5 wraps
Include the isolation high frequency transformer of its composition and parameter identical first winding and Secondary Winding, and respectively with first winding, two
A high-frequency rectification/inversion unit that secondary winding is connected, secondary high-frequency rectification/inversion unit, a high-frequency rectification/inversion list
The input of the positive dc/dc conversion of unit is also the outfan of reverse dc/dc conversion, respectively with energy-storage battery 6 and battery management
System 7 is connected, and the outfan of the positive dc/dc conversion of a high-frequency rectification/inversion unit is also the defeated of reverse dc/dc conversion
Enter end, be connected with dc bus 10, two-way dc/dc changer 5 is used for transmitting bidirectional energy.
A high-frequency rectification/inversion unit in two-way dc/dc changer 5, is full bridge high frequency rectification/inverter circuit,
Igbt switching tube s1 including each own anti-paralleled diode of four on two brachium pontis or body endoparasitism diode ~ s4 composition
Two groups totally four switch, the secondary high-frequency rectification/inversion unit in two-way dc/dc changer 5, its composition with parameter with once
High-frequency rectification/inversion unit is identical, is also full bridge high frequency rectification/inverter circuit, each including four on two brachium pontis
Two groups of the igbt switching tube s5 of own anti-paralleled diode or body endoparasitism diode ~ s8 composition totally four switches, by electricity
Pond management system 7 controls a high-frequency rectification/inversion unit and the secondary high-frequency rectification/inverse changing in two-way dc/dc changer 5
Become four groups of unit totally eight switches open order, realize positive dc/dc conversion and reverse dc/dc become cutting between changing jobs
Change.
The operational mode of two-way dc/dc changer 5 includes stop mode, charge mode, discharge mode and potentiostatic mode, by
The human-computer interaction module of battery management system 7 is controlled with protection and alarm module detects according to the voltage transformer that grid side is installed
Line voltage judge electrical network normal power supply or the result breaking down, control two-way dc/dc changer 5 operational mode it
Between switching.
During electrical network normal power supply, converter normal work, it is output as AC load by electrical network power taking is rectified, after inversion and supply
Electricity 8, and maintain dc bus 10 voltage stabilization, two-way dc/dc changer is controlled by the human-computer interaction module of battery management system 7
5 operational mode is charge mode and discharge mode, arranges charging current value and float charge voltage value in charge mode, to iron phosphate
Lithium energy-storage battery 6 carries out constant current/constant voltage charging, arranges discharge current value and discharge power value in discharge mode, to LiFePO4
Energy-storage battery 6 carries out constant current/power electric discharge；Examined in real time by the battery system state monitoring module of battery management system 7 simultaneously
Survey voltage, electric current and the temperature of LiFePO4 energy-storage battery 6, and by the communication module of battery management system 7, data is passed through
Rs232 communications give two-way dc/dc changer 5, two-way dc/dc changer 5 according to the parameter of LiFePO4 energy-storage battery 6,
Setting Protection parameters, adjustment operational mode and output voltage are reliable to LiFePO4 energy-storage battery 6 to be protected.
Line voltage is less than 0.2 times of rated voltage, and when maintaining 60s, judges grid collapses, by battery management system
7 protection controls and alarm function module control high-frequency rectification/inversion unit changing in two-way dc/dc changer 5 and
Four groups of secondary high-frequency rectification/inversion unit totally eight switch open order by the operational mode of two-way dc/dc changer 5 by
One of stop mode, charge mode and discharge mode switch to potentiostatic mode, and now emergency power supply system is accordingly by normal
Mode of operation switches to voltage stabilizing mode of operation, by adjusting a high-frequency rectification/inversion unit in two-way dc/dc changer 5
Release energy with the Duty ratio control LiFePO4 energy-storage batteries 6 of four groups of secondary high-frequency rectification/inversion unit totally eight switches,
Make dc bus 10 voltage constant, be AC load 7 emergency service after inversion, and to electrical network, LiFePO4 energy-storage battery 6
And two-way dc/dc changer 5 itself protected, electrical network is protected, including in time with electrical network disconnection, prevent fault shadow
Ring expanded range, LiFePO4 energy-storage battery 6 is protected, including LiFePO4 energy-storage battery 6 is carried out overvoltage/undervoltage protection,
Overcurrent protection and overtemperature protection, and the protection of direct current overvoltage/undervoltage, direct current overcurrent protection, direct-current polarity reverse connecting protection, AC overcurrent
Protect, exchanged underfrequency protection, exchange overvoltage/undervoltage protection and exchanged underfrequency protection, two-way dc/dc changer 5 is protected
Shield, including direct current overcurrent protection, DC over-voltage protection and direct current under-voltage protection.
Line voltage is more than 0.2 times of rated voltage, and when maintaining 10s, judges power system restoration normal power supply, by battery management
The protection of system 7 controls and alarm function module controls a high-frequency rectification/inversion list changed in two-way dc/dc changer 5
Four groups of first and secondary high-frequency rectification/inversion unit totally eight switches open order by the operation mould of two-way dc/dc changer 5
Formula switches to charge mode by potentiostatic mode, and now the operational mode of emergency power supply system is accordingly switched to by voltage stabilizing mode of operation
Normal mode of operation, LiFePO4 energy-storage battery 6 is connected on dc bus 10 in the form of current source, can with improve power supply
By property, because, within the shorter electric network fault time, this converter emergency power supply system can guarantee that AC load 7 is normally run,
The reliability of converter emergency service can be significantly improved.
Above content is to further describe it is impossible to assert with reference to specific preferred implementation is made for the present invention
Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Without departing from making some equivalent substitutes or obvious modification on the premise of present inventive concept, and performance or purposes are identical, all should
It is considered as belonging to the scope of patent protection that the present invention is determined by the claims submitted to.
Claims (8)
1. a kind of converter emergency power supply system, including the converter being composed in series by ac/dc commutator and dc/ac inverter,
Energy storage device, two-way dc/dc changer, and battery management system,
Described ac/dc commutator, its input is connected with civil power through AC circuit breaker, and outfan is connected with dc bus,
During for electrical network normal power supply, the industrial-frequency alternating current of electrical network is transformed to unidirectional current；
Described dc/ac inverter, its input is connected with dc bus, and outfan is connected with AC load, in electricity
During net normal power supply, the unidirectional current of described ac/dc commutator output is converted to alternating current to power for AC load, sends out in civil power
Unidirectional current during raw fault exporting energy storage device is converted to alternating current and powers for AC load；
Described energy storage device is used for DC load is powered, and maintains the uninterrupted confession to AC load in grid collapses
Electricity；
Described two-way dc/dc changer, the isolation high frequency including its composition and parameter identical first winding and Secondary Winding becomes
Depressor, and a high-frequency rectification/inversion unit being connected with described first winding, Secondary Winding, secondary high frequency are whole respectively
Stream/inversion unit, the input of the positive dc/dc conversion of a described high-frequency rectification/inversion unit is also reverse dc/dc conversion
Outfan, be connected with described energy storage device and described battery management system respectively, a described high-frequency rectification/inversion unit
Positive dc/dc conversion outfan be also reverse dc/dc conversion input, be connected with described dc bus, described double
It is used for transmitting bidirectional energy to dc/dc changer；
It is characterized in that:
Described two-way dc/dc changer operational mode includes stop mode, charge mode, discharge mode and potentiostatic mode, by institute
State the mutual induction of voltage that the human-computer interaction module of battery management system is installed according to grid side with protection control and alarm function module
Electrical network normal power supply or the result breaking down that the line voltage of device detection judges, control described two-way dc/dc changer fortune
Switching between row mode；
During electrical network normal power supply, converter normal work, it is output as AC load by electrical network power taking is rectified, after inversion and power,
And maintain DC bus-bar voltage stable, described two-way dc/dc conversion is controlled by the human-computer interaction module of described battery management system
The operational mode of device is charge mode and discharge mode, arranges charging current value and float charge voltage value in charge mode, to described
Energy storage device carries out constant current/constant voltage charging, arranges discharge current value and discharge power value in discharge mode, to described energy storage device
Carry out constant current/power electric discharge；Simultaneously described in the battery system state monitoring module real-time detection of described battery management system
The voltage of energy storage device, electric current and temperature, and by the communication module of described battery management system, data is passed by rs232 communication
It is defeated by described two-way dc/dc changer, described two-way dc/dc changer is according to the parameter of described energy storage device, setting protection ginseng
Number, adjustment operational mode and output voltage carry out reliably protecting to described energy storage device；
Line voltage is less than 0.2 times of rated voltage, and when maintaining 60s, judges grid collapses, by described battery management system
Protection control and alarm function module controls the order of opening of the respective switch changed in two-way dc/dc changer will be described pair
To dc/dc changer operational mode, potentiostatic mode is switched to by one of stop mode, charge mode and discharge mode, now
Emergency power supply system accordingly switches to voltage stabilizing mode of operation by normal mode of operation, by adjusting the Duty ratio control of respective switch
Described energy storage device releases energy, and makes DC bus-bar voltage constant, is AC load emergency service after inversion, and to electricity
Net, described energy storage device and described two-way dc/dc changer are protected itself, described electrical network is protected, including and
When with electrical network disconnect, prevent fault incidence expand, described energy storage device is protected, enter including to described energy storage device
The protection of row overvoltage/undervoltage, overcurrent protection and overtemperature protection, and direct-current polarity reverse connecting protection with exchanged underfrequency protection, described excessively deficient
Pressure protection is the protection of direct current overvoltage/undervoltage, exchange overvoltage/undervoltage protection, and described overcurrent protection is direct current overcurrent protection, AC overcurrent is protected
Shield, described protects to two-way dc/dc changer, including direct current overcurrent protection, DC over-voltage protection and direct current under-voltage protection；
Line voltage is more than 0.2 times of rated voltage, and when maintaining 10s, judges power system restoration normal power supply, by described battery management
The protection of system controls and alarm function module controls the respective switch changed in two-way dc/dc changer opens order by institute
State two-way dc/dc changer operational mode and charge mode is switched to by potentiostatic mode, the now operational mode of emergency power supply system
Accordingly normal mode of operation is switched to by voltage stabilizing mode of operation, described energy storage device is connected to dc bus in the form of current source
On, to improve the reliability of power supply, because, within the shorter electric network fault time, this converter emergency power supply system can guarantee that friendship
Current load normally runs, and can significantly improve the reliability of converter emergency service.
2. converter emergency power supply system as claimed in claim 1 it is characterised in that:
A high-frequency rectification/inversion unit in described two-way dc/dc changer, is full bridge high frequency rectification/inverter circuit, bag
Include two groups of switching tube composition of four each own anti-paralleled diodes on two brachium pontis or body endoparasitism diode totally four
Individual switch, by described battery management system control two groups of change totally four switches open order, realize positive dc/dc conversion and
Reversely dc/dc becomes the switching between changing jobs.
3. converter emergency power supply system as claimed in claim 1 or 2 it is characterised in that:
Secondary high-frequency rectification/inversion unit in described two-way dc/dc changer, its composition and parameter and high-frequency rectification/
Inversion unit is identical, is also full bridge high frequency rectification/inverter circuit, including each own inverse parallel of four on two brachium pontis
Two groups of the switching tube composition of diode or body endoparasitism diode totally four switches, are controlled more by described battery management system
Change two groups totally four switches open order, realize positive dc/dc conversion and reverse dc/dc become the switching between changing jobs.
4. converter emergency power supply system as claimed in claim 3 it is characterised in that:
Described switching tube is insulated gate bipolar translator power tube igbt.
5. converter emergency power supply system as claimed in claim 4 it is characterised in that:
Described energy storage device is LiFePO4 energy-storage battery, is lithium ion battery LiFePO4 being used as positive electrode.
6. converter emergency power supply system as claimed in claim 5 it is characterised in that:
Described AC load is the AC load of converter.
7. converter emergency power supply system as claimed in claim 6 it is characterised in that:
The AC load of described converter includes ac motor.
8. converter emergency power supply system as claimed in claim 7 it is characterised in that:
Described battery management system, controls and alarm function including battery system state monitoring module, fault diagnosis module, protection
Module, battery balanced functional module, heat management functional module, data recordin module, communication module, and human-computer interaction module,
Described communication module includes connecing with the rs485 communication interface of host computer centralized monitoring system transmission data or/and ethernet communication
Mouthful.
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|---|---|---|---|
| CN201410250307.7A CN104065154B (en) | 2014-06-09 | 2014-06-09 | Frequency changer emergency power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410250307.7A CN104065154B (en) | 2014-06-09 | 2014-06-09 | Frequency changer emergency power supply system |
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| CN104065154A CN104065154A (en) | 2014-09-24 |
| CN104065154B true CN104065154B (en) | 2017-01-25 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201608554U (en) * | 2009-12-17 | 2010-10-13 | 江苏艾索新能源股份有限公司 | Uninterrupted power supply system for human-computer interface of photovoltaic grid-connected inverter |
| CN103441694A (en) * | 2013-08-23 | 2013-12-11 | 广西电网公司电力科学研究院 | Large-power distribution type energy storage converter |
| CN103441667B (en) * | 2013-09-18 | 2016-08-17 | 湘潭大学 | A kind of direct-flow controlling device being applied to multistage energy-storage system |
| CN103762621B (en) * | 2014-01-08 | 2016-09-14 | 深圳桑达国际电源科技有限公司 | A kind of alternating current-direct current intercommunication control circuit, micro-capacitance sensor and control method |
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2014
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