CN208190335U - A kind of parallel connection type backup power source based on crisscross parallel DC-DC converter - Google Patents
A kind of parallel connection type backup power source based on crisscross parallel DC-DC converter Download PDFInfo
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- CN208190335U CN208190335U CN201820353006.0U CN201820353006U CN208190335U CN 208190335 U CN208190335 U CN 208190335U CN 201820353006 U CN201820353006 U CN 201820353006U CN 208190335 U CN208190335 U CN 208190335U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
A kind of parallel connection type backup power source based on crisscross parallel DC-DC converter is by load M, system power supply AC, super capacitor energy-storage module, crisscross parallel two-way DC-DC converter module, inverter module and bidirectional thyristor module composition；Its superiority is: enhancing super capacitor discharge capability, while it is integrated to be furthermore achieved device, effectively reduces cost；Not only there is the response speed being exceedingly fast, standby high-efficient, the operation is stable, and structure is simple, has effectively saved product cost, convenient for safeguarding, easily operated, sexual valence is relatively high.
Description
(1) technical field:
The utility model belongs to electrical equipment technical field, in particular to a kind of to be based on crisscross parallel DC-dc conversion
The parallel connection type backup power source of device, backup power source is provided when with system power source voltage failure ensures the function that load works normally
Energy.
(2) background technique:
With the raising of China's modern industrial technology and living standards of the people, power quality problem is increasingly prominent, electric energy matter
Amount Treatment process has become the key for solving power quality problem.One main problem of power quality is system power supply electricity at present
Transient fault is pressed, corresponding solution mainly has dynamic electric voltage recovery device (DVR --- Dynamic Voltage
) and on-Line UPS (UPS --- Uninterruptible Power System) Regulator.
But the development of the continuous improvement and super capacitor energy-storage technology electricity quality required with modern industrial production, especially
It proposes new demand in system power source voltage transient power quality problem, which includes that system power source voltage is deep in short-term
Degree, which declines, and short interruptions are since current conventional DCto-DC converter discharge capability is weak the short time to realize super capacitor
Repid discharge, and DVR is that it is caused to be unable to satisfy the decline of short time voltage depth and interrupt based on series voltage compensation principle
Voltage compensation requirement, while UPS low efficiency, many enterprises can not receive at present.
With the development of energy storage technology, two-way DC-DC converter and three-phase bridge inverter have been highly developed
Power electronic equipment, high reliablity are at low cost.At the same time, requirement of the development of modern industry to power supply quality be also increasingly
Height, mutually reply have the parallel voltage function with energy storage demand it is more and more urgent.
(3) utility model content:
The purpose of this utility model is to make up current backup power source to super capacitor energy-storage discharge capability shortcoming, is proposed
A kind of parallel connection type backup power source based on crisscross parallel DC-DC converter, be a kind of simple structure, fast response time, to
Engine efficiency height, the operation is stable, at low cost, convenient for safeguarding, easily operated, the higher backup power source of cost performance.
The technical solution of the utility model includes: a kind of parallel connection type backup power source based on crisscross parallel DC-DC converter,
Including load M and system power supply AC, it is characterised in that it is by super capacitor energy-storage module, crisscross parallel two-way DC-DC
Converter module, inverter module and bidirectional thyristor module composition；Wherein, the super capacitor energy-storage module and crisscross parallel
The low-pressure side of two-way DC-DC converter module is in be connected in parallel；The height of the crisscross parallel two-way DC-DC converter
The DC side of pressure side and inverter module is in be connected in parallel；The ac output end of the inverter module is parallel to bidirectional thyristor
Between module output end and load M；The input terminal of the bidirectional thyristor module is connect with system power supply AC.
The inverter module is made of three-phase inverter and LC filter, is connected as conventional connection.
The bidirectional thyristor module is made of bidirectional thyristor and its driving and control circuit, is connected as conventional connect
It connects.
The crisscross parallel two-way DC-DC converter module is mutual by least two DC-DC converter
Parallel connection is constituted；Wherein, the DC-DC converter is IGBT field-effect tube；Source between each DC-DC converter
It is extremely parallel with one another, to reactor L1, reactor L2 and reactor L3 are connected between pipe respectively；The reactor L1, reactor L2
The low-pressure side that DC-DC converter is linked together and constituted with the negative pole end to pipe with the other end of reactor L3, to pipe
Positive terminal be direct current-DC converter high-pressure side；For three parallel branches, the pulse-width modulation PWM trigger signal of IGBT
2 π/3 of phase phase difference, so that three reactor current phase cross-overs differ 2 π/3.
The super capacitor energy-storage module is composed of in series and parallel super capacitor monomer.
Working principle of the utility model is: system power supply is supplied by bidirectional thyristor to load M when system power supply is normal
Electricity, three-phase inverter work provide support energy, super capacitor energy-storage module in uncontrollable rectifier mode, and for inverter direct-flow side
PWM1, PWM3 and PWM5 trigger signal by triggering crisscross parallel DC-DC converter module charges to realize energy
Storage；When transient voltage failure occurs for system power supply AC, three-phase inversion module works in voltage source mode, passes through back-pressure pulse
Method or load current transfer method realize that bidirectional thyristor effectively turns off, and super capacitor energy-storage module passes through triggering crisscross parallel
PWM1, PWM3 and the PWM5 trigger signal of DC-DC converter module are discharged to inverter module, and inverter module is as voltage
Source is to maintain the normal work of load M, and after system power supply AC restores normal, inverter module then exits voltage source inverter work
Mode, bidirectional thyristor are switched on the normal work to maintain load.
The utility model superiority is: the parallel connection type backup power source based on crisscross parallel DC-DC converter enhances
Super capacitor discharge capability, while it is integrated to be furthermore achieved device, effectively reduces cost；Not only there is the response being exceedingly fast
Speed, standby high-efficient, the operation is stable, and structure is simple, has effectively saved product cost, it is convenient for safeguarding, it is easily operated,
Sexual valence is relatively high.
(4) Detailed description of the invention:
Fig. 1 is a kind of parallel connection type backup power source based on crisscross parallel DC-DC converter involved by the utility model
Overall structure diagram.
Fig. 2 is a kind of parallel connection type backup power source based on crisscross parallel DC-DC converter involved by the utility model
The electrical block diagram of crisscross parallel two-way DC-DC converter module.
Fig. 3 is a kind of parallel connection type backup power source based on crisscross parallel DC-DC converter involved by the utility model
The pulse-width modulation PWM signal timing diagram of each IGBT of crisscross parallel two-way DC-DC converter module.
(5) specific embodiment:
Embodiment: below in conjunction with attached drawing, be discussed in detail the utility model based on crisscross parallel DC-DC converter and
Connection type backup power source composition.
As shown in Figure 1, a kind of parallel connection type backup power source based on crisscross parallel DC-DC converter, including load M and
System power supply AC, it is characterised in that it be by super capacitor energy-storage module, crisscross parallel two-way DC-DC converter module,
Inverter module and bidirectional thyristor module composition；Wherein, the super capacitor energy-storage module and crisscross parallel bidirectional, dc-are straight
The low-pressure side of current converter module is in be connected in parallel；The high-pressure side of the crisscross parallel two-way DC-DC converter and inversion
The DC side of device module is in be connected in parallel；The ac output end of the inverter module is parallel to bidirectional thyristor module output end
Between load M；The input terminal of the bidirectional thyristor module is connect with system power supply AC.
The inverter module is made of three-phase inverter and LC filter, is connected as conventional connection.
The bidirectional thyristor module is made of bidirectional thyristor and its driving and control circuit, is connected as conventional connect
It connects.
As shown in Figure 2 and Figure 3, the crisscross parallel two-way DC-DC converter module is by least two direct current-
DC converter composition parallel with one another；Wherein, the DC-DC converter is IGBT field-effect tube；Each DC-DC
Source electrode between converter is parallel with one another, to being connected to reactor L1, reactor L2 and reactor L3 between pipe respectively；The reactance
The other end of device L1, reactor L2 and reactor L3 link together and constitute DC-DC converter with the negative pole end to pipe
Low-pressure side, be the high-pressure side of DC-DC converter to the positive terminal of pipe；For three parallel branches, the pulsewidth tune of IGBT
2 π/3 of PWM trigger signal phase phase difference processed, so that three reactor current phase cross-overs differ 2 π/3.
Referring to Fig.1 shown in, the utility model proposes a kind of parallel connection type based on crisscross parallel DC-DC converter it is standby
It include super capacitor energy-storage module with power supply, crisscross parallel two-way DC-DC converter module, three-phase inverter module is double
To thyristor module；Wherein, the low-pressure side of super capacitor energy-storage module and crisscross parallel two-way DC-DC converter module is simultaneously
Connection, the high-pressure side of crisscross parallel two-way DC-DC converter and three-phase inverter module DC side parallel, three-phase inverter mould
Block ac output end is parallel between bidirectional thyristor module output end and load M, and bidirectional thyristor input terminal connects system electricity
Source AC.
The specific embodiment of each component of the utility model is described as follows:
Three-phase inverter module is made of conventional three-phase inverter and LC filter.
Bidirectional thyristor module is made of conventional bidirectional thyristor and its driving and control circuit.
Two-way DC-DC converter module is in parallel using multiple DC-DC converters, wherein insulated gate transistor
To pipe B1, B2, B3 are in parallel, to meeting reactor L1 among pipe respectively, L2, the one end L3, the reactor other end link together and with
The low-pressure side that the module is formed to pipe cathode, to the high-pressure side of the positive and negative extremely module of pipe.
Super-capacitor module is composed of in series and parallel super capacitor monomer.
Claims (2)
1. a kind of parallel connection type backup power source based on crisscross parallel DC-DC converter, including load M and system power supply AC,
It is characterized in that it be by super capacitor energy-storage module, crisscross parallel two-way DC-DC converter module, inverter module and
Bidirectional thyristor module composition；Wherein, the super capacitor energy-storage module and crisscross parallel two-way DC-DC converter module
Low-pressure side in being connected in parallel；The high-pressure side of the crisscross parallel two-way DC-DC converter and the direct current of inverter module
Side is in be connected in parallel；The ac output end of the inverter module is parallel between bidirectional thyristor module output end and load M；
The input terminal of the bidirectional thyristor module is connect with system power supply AC；The crisscross parallel two-way DC-DC converter mould
Block is constituted by least two DC-DC converter is parallel with one another；Wherein, the DC-DC converter is IGBT
Effect pipe；Source electrode between each DC-DC converter is parallel with one another, to being connected to reactor L1, reactance between pipe respectively
Device L2 and reactor L3；The other end of the reactor L1, reactor L2 and reactor L3 link together and bear with to pipe
The extreme low-pressure side for constituting DC-DC converter, the positive terminal to pipe are the high-pressure side of DC-DC converter；For three
A parallel branch, 2 π/3 of pulse-width modulation PWM trigger signal phase phase difference of IGBT, so that three reactor current phases are handed over
Poor 2 π/3 of misphase.
2. a kind of parallel connection type backup power source based on crisscross parallel DC-DC converter according to claim 1, feature
It is that the super capacitor energy-storage module is composed of in series and parallel super capacitor monomer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353006.0U CN208190335U (en) | 2018-03-15 | 2018-03-15 | A kind of parallel connection type backup power source based on crisscross parallel DC-DC converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353006.0U CN208190335U (en) | 2018-03-15 | 2018-03-15 | A kind of parallel connection type backup power source based on crisscross parallel DC-DC converter |
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| CN208190335U true CN208190335U (en) | 2018-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551798A (en) * | 2020-03-20 | 2020-08-18 | 西安交通大学 | Low-voltage energy storage type high-power short circuit testing device and testing method |
-
2018
- 2018-03-15 CN CN201820353006.0U patent/CN208190335U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551798A (en) * | 2020-03-20 | 2020-08-18 | 西安交通大学 | Low-voltage energy storage type high-power short circuit testing device and testing method |
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