CN208723785U - A kind of frequency converter for having high-low voltage and passing through function - Google Patents
A kind of frequency converter for having high-low voltage and passing through function Download PDFInfo
- Publication number
- CN208723785U CN208723785U CN201820719907.7U CN201820719907U CN208723785U CN 208723785 U CN208723785 U CN 208723785U CN 201820719907 U CN201820719907 U CN 201820719907U CN 208723785 U CN208723785 U CN 208723785U
- Authority
- CN
- China
- Prior art keywords
- igbt
- super capacitor
- pipe
- diode
- frequency converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 81
- 238000004146 energy storage Methods 0.000 claims abstract description 11
- 238000007667 floating Methods 0.000 claims abstract description 10
- 238000007600 charging Methods 0.000 claims abstract description 9
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 4
- 230000001568 sexual effect Effects 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Inverter Devices (AREA)
- Rectifiers (AREA)
Abstract
The utility model discloses and provides a kind of frequency converter for having high-low voltage and passing through function, it includes the system power supply part of corresponding adaptation connection, inverter section, super capacitor energy storage device, bi-directional DC-DC, control and drive part, load, the bi-directional DC-DC circuit has constant-current charge and two kinds of charge modes of floating charge to the second super capacitor E2 charging, constant-current charge is then carried out when the second super capacitor E2 capacity is lower than desired value, floating charge is then carried out when the second super capacitor E2 capacity reaches desired value, it is constant voltage discharge mode to the first super capacitor E1, when the first super capacitor E1 voltage is to start constant voltage discharge lower than desired value, that is the second super capacitor E2 discharges to frequency converter the first super capacitor E1.The utility model mainly solves the problems, such as that traditional frequency conversion device can stop working when system power source voltage is abnormal, and not only has and is exceedingly fast response speed, the operation is stable, and can effectively save the cost, convenient for safeguarding, easily operated, sexual valence is relatively high.
Description
Technical field
The utility model relates to converter technology field more particularly to a kind of frequency conversions for having high-low voltage and passing through function
Device.
Background technique
Requirement due to modern industrial production to power quality is continuously improved, and system power source voltage falls, increases or interrupt
It can be operated normally to production process is influenced, will cause fatal damage particularly with production technologies such as petrochemical industry, papermaking, power plants
Evil, for this kind of sensitive load usually by transducer drive, typical sensitive load includes the power types load such as blower, water pump.According to state
Border authoritative institution statistics, due to Voltage Drop, increase or disruption caused by production line disorder the problems such as caused by lose,
It is more than half for accounting for power quality issues.Therefore, new and high technology means are taken to reduce and avoid Voltage Drop from user side
Bring endangers the pressing issues for having become modern enterprise power supply technique.
Having high-low voltage to pass through the frequency converter of function is that be come into being specialize in the height of governing system supply voltage exception
New technical equipment, energy storage device pass through bi-directional DC-DC circuit in parallel in frequency converter DC capacitor side, when system voltage voltage reduces
When, the decline of frequency converter DC capacitor voltage, then starting bi-directional DC-DC charges to frequency converter DC capacitor immediately, it is ensured that frequency converter
Output voltage amplitude is kept constant.When system voltage increases, inverter passes through the voltage control strategy based on PWM, it is ensured that becomes
Frequency device output voltage amplitude is kept constant, and keeps sensitive load impacted because of the exception of supply voltage.
With the development of energy storage technology, super capacitor is as typical energy storage device since service life increases, and discharge energy
Power is reinforced, and cost is reduced and is widely used.And DC-DC circuit has been that highly developed power electronics is set with frequency converter
It is standby.With the development of modern industry, also higher and higher to the requirement of power supply quality, mutually there is high-low voltage to pass through function for reply
Frequency converter demand is more and more urgent.The frequency converter product that developing, there is high-low voltage to pass through function can satisfy the demand in market,
Push the improvement of grid power quality horizontal.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of frequency converters for having high-low voltage and passing through function.
The technical solution of the utility model is: a kind of frequency converter for having high-low voltage and passing through function, it includes corresponding suitable
It is system power supply part, inverter section, super capacitor energy storage device, bi-directional DC-DC, control and drive part with connection, negative
It carries, the system power supply part includes the first inductance, the second inductance, third inductance, first diode, the second diode, third
Diode, the 4th diode, the 5th diode, the 6th diode, the inverter section include the first super capacitor, first
IGBT pipe, the 2nd IGBT pipe, the 3rd IGBT pipe, the 4th IGBT pipe, the 5th IGBT pipe, the 6th IGBT pipe, the super capacitor storage
Energy device includes the second super capacitor, and the bi-directional DC-DC includes the 4th inductance, the 7th IGBT pipe, the 8th IGBT pipe, institute
State first diode, the second diode, third diode, the 4th diode, the 5th diode, the 6th diode composition three-phase bridge
Three ac input ends of formula rectifier, the three-phase bridge rectifier pass through first inductance, the second inductance, third respectively
Inductance connection power grid three-phase alternating-current supply, the DC output end of the three-phase bridge rectifier and first super capacitor are simultaneously
Connection, the first IGBT pipe are managed with the 2nd IGBT, and the 3rd IGBT pipe is managed with the 4th IGBT, the 5th IGBT pipe and the 6th
Forward direction is composed in series three IGBT to pipe to IGBT pipe respectively, and it is whole that three IGBT connect the three-phase bridge to the collector of pipe
The DC output end anode of device is flowed, three IGBT connect the direct current output of the three-phase bridge rectifier to the emitter of pipe
Negative terminal is held, three IGBT connect the load to the series connection point of pipe, and the 7th IGBT pipe manages (Q8) just with the 8th IGBT
To the 4th IGBT is composed in series to pipe, the 4th IGBT connects the straight of the three-phase bridge rectifier to the collector of pipe
Output end anode is flowed, the DC output end that the 4th IGBT connects the three-phase bridge rectifier to the emitter of pipe is negative
End, the 4th IGBT to the series connection point of pipe by one end of the second super capacitor described in the 4th inductance connection, it is described
The other end of second super capacitor connects the DC output end negative terminal of the three-phase bridge rectifier, the base of all IGBT pipes
The pole connection control and drive part circuit.
The bi-directional DC-DC circuit has constant-current charge and two kinds of floating charge chargings, two kinds of moulds to second super capacitor charging
Formula then carries out constant-current charge when the second super capacitor capacity is lower than desired value, when the second super capacitor capacity reaches
Floating charge is then carried out when to desired value, is constant voltage discharge mode to first super capacitor, when the first super-capacitor voltage is lower than
Desired value is to start constant voltage discharge, i.e. the second super capacitor discharges to the first super capacitor of frequency converter.
The control and drive part include control circuit and detection circuit, and the detection circuit includes super capacitor direct current
Voltage Vdc1, frequency converter DC capacitor voltage Vdc2, direct current reactive current IL, output current of frequency converter Iac, control circuit include
AD sampling and micro-control unit chip, the micro-control unit chip realize bi-directional DC-DC charge and discharge control algorithm and frequency converter
Control algolithm.
For the inverter section in addition to conventional func, first super capacitor can bear 1.3 times of specified lines of system power supply
Voltage peak, while the inverter section has the function of constant voltage output, the control and drive part control driving IGBT are led
Logical and shutdown.
The beneficial effects of the utility model are: it includes the system power supply portion of corresponding adaptation connection due to the utility model
Point, inverter section, super capacitor energy storage device, bi-directional DC-DC, control and drive part, load, the bi-directional DC-DC electricity
There are constant-current charge and two kinds of charging both of which of floating charge in road to second super capacitor charging, when second super capacitor holds
Constant-current charge is then carried out when amount is lower than desired value, floating charge is then carried out when the second super capacitor capacity reaches desired value, it is right
First super capacitor is constant voltage discharge mode, is to start constant voltage discharge when the first super-capacitor voltage is lower than desired value,
That is the second super capacitor discharges to the first super capacitor of frequency converter.The control and drive part include control circuit and detection electricity
Road, the detection circuit include super capacitor DC voltage Vdc1, frequency converter DC capacitor voltage Vdc2, direct current reactive current
IL, output current of frequency converter Iac, control circuit include AD sampling and micro-control unit chip, and the micro-control unit chip is real
Existing bi-directional DC-DC charge and discharge control algorithm and Frequency Converter Control algorithm.The inverter section is in addition to conventional func, and described first
Super capacitor can bear 1.3 times of system power supply rated line voltage peak values, while the inverter section has the function of constant voltage output,
The control and drive part control driving IGBT conducting and shutdown.So the utility model is a kind of based on energy storage device and double
The frequency converter of electric DC-DC circuit not only has and is exceedingly fast response speed, the operation is stable, and can effectively save the cost, be convenient for
Maintenance, easily operated, sexual valence is relatively high.
Detailed description of the invention
Fig. 1 is the utility model main circuit schematic illustration；
Fig. 2 is the utility model Frequency Converter Control and detection hardware structural diagram；
Fig. 3 is the Frequency Converter Control algorithm structure block diagram of the utility model.
Specific embodiment
As shown in Figure 1 to Figure 3, the utility model it include the system power supply part of corresponding adaptation connection, inverter section,
Super capacitor energy storage device, bi-directional DC-DC, control and drive part, load, the system power supply part include the first inductance
L1, the second inductance L2, third inductance L3, first diode D1, the second diode D2, third diode D3, the 4th diode D4,
5th diode D5, the 6th diode D6, the inverter section include the first super capacitor E1, the first IGBT pipe Q1, second
IGBT pipe Q2, the 3rd IGBT pipe Q3, the 4th IGBT pipe Q4, the 5th IGBT pipe Q5, the 6th IGBT pipe Q6, the super capacitor energy-storage
Device includes the second super capacitor E2, and the bi-directional DC-DC includes the 4th inductance L4, the 7th IGBT pipe Q7, the 8th IGBT
Pipe Q8, the first diode D1, the second diode D2, third diode D3, the 4th diode D4, the 5th diode D5,
Six diode D6 form three-phase bridge rectifier, and three ac input ends of the three-phase bridge rectifier pass through described the respectively
One inductance L1, the second inductance L2, third inductance L3 connection power grid three-phase alternating-current supply, the direct current of the three-phase bridge rectifier are defeated
Outlet is in parallel with the first super capacitor E1, the first IGBT pipe Q1 and the 2nd IGBT pipe Q2, the 3rd IGBT pipe Q3
Forward direction is composed in series three IGBT to pipe, institute respectively with the 4th IGBT pipe Q4, the 5th IGBT pipe Q5 and the 6th IGBT pipe Q6
The DC output end anode that three IGBT connect the three-phase bridge rectifier to the collector of pipe is stated, three IGBT are to pipe
Emitter connect the DC output end negative terminal of the three-phase bridge rectifier, three IGBT connect institute to the series connection point of pipe
Stating load, the 7th IGBT pipe Q7 and the 8th IGBT pipe Q8 forward direction are composed in series the 4th IGBT to pipe, and described 4th
IGBT connects the DC output end anode of the three-phase bridge rectifier, hair of the 4th IGBT to pipe to the collector of pipe
Emitter-base bandgap grading connects the DC output end negative terminal of the three-phase bridge rectifier, and the 4th IGBT passes through the series connection point of pipe described
4th inductance L4 connects one end of the second super capacitor E2, and the other end of the second super capacitor E2 connects the three-phase
The DC output end negative terminal of bridge rectifier, the base stage connection control of all IGBT pipes and drive part circuit.
The bi-directional DC-DC circuit has constant-current charge and two kinds of charging moulds of floating charge to the second super capacitor E2 charging
Formula then carries out constant-current charge when the second super capacitor E2 capacity is lower than desired value, when the second super capacitor E2 holds
Amount then carries out floating charge when reaching desired value, is constant voltage discharge mode to the first super capacitor E1, as the first super capacitor E1
Voltage is to start constant voltage discharge lower than desired value, i.e. the second super capacitor E2 discharges to frequency converter the first super capacitor E1.
The control and drive part include control circuit and detection circuit, and the detection circuit includes super capacitor direct current
Voltage Vdc1, frequency converter DC capacitor voltage Vdc2, direct current reactive current IL, output current of frequency converter Iac, control circuit include
AD sampling and micro-control unit chip, the micro-control unit chip realize bi-directional DC-DC charge and discharge control algorithm and frequency converter
Control algolithm.
For the inverter section in addition to conventional func, it is specified that the first super capacitor E1 can bear 1.3 times of system power supplies
Line voltage peak value, while the inverter section has the function of constant voltage output, the control and drive part control driving IGBT
Conducting and shutdown.
In the present embodiment, power electronics hardware circuit includes IGBT to pipe, inductance, super capacitor, diode, system power supply
When voltage is normal, frequency converter passes through three-phase diode rectification and three-phase bridge inversion driving load.Frequency converter DC capacitor is logical simultaneously
Bi-directional DC-DC is crossed to charge to super capacitor.When system power source voltage reduces or interrupts, frequency changer direct current bus voltage is reduced,
Then start bi-directional DC-DC, super capacitor discharges to frequency converter DC capacitor, and it is constant that frequency converter can still maintain output voltage amplitude
Driving load.When system voltage voltage increases, frequency converter guarantees inverter output electricity by the voltage control technology based on PWM
It presses constant.Power module is for providing current Hall element, voltage needed for driving circuit and controller.Driving circuit is for driving
IGBT conducting and shutdown.Controller includes control circuit and detection circuit.Controller passes through function for having high-low voltage
Frequency Converter Control algorithm is realized, realizes frequency converter output voltage Isobarically Control, super capacitor charge and discharge control according to algorithm.When being
When supply voltage of uniting is normal or increases, frequency converter be in constant voltage output state, and its DC capacitor passes through bi-directional DC-DC to super
Capacitor charging.When system power source voltage reduces or interrupts, frequency converter is in constant voltage output state, and bi-directional DC-DC passes through super
Capacitor discharges to frequency converter DC capacitor.
It is above-mentioned based on the frequency converter scheme for having high-low voltage and passing through function, mainly solve traditional frequency conversion device in system power supply
The problem of voltage can stop working when being abnormal.Not only there is be exceedingly fast response speed, the operation is stable, and can effectively save
About cost, convenient for safeguarding, easily operated, sexual valence is relatively high.
Claims (4)
1. a kind of frequency converter for having high-low voltage and passing through function, it includes the system power supply part of corresponding adaptation connection, frequency conversion
Device part, super capacitor energy storage device, bi-directional DC-DC, control and drive part, load, it is characterised in that: the system power supply
Part include the first inductance (L1), the second inductance (L2), third inductance (L3), first diode (D1), the second diode (D2),
Third diode (D3), the 4th diode (D4), the 5th diode (D5), the 6th diode (D6), the inverter section packet
Include the first super capacitor (E1), the first IGBT pipe (Q1), the 2nd IGBT pipe (Q2), the 3rd IGBT pipe (Q3), the 4th IGBT pipe
(Q4), the 5th IGBT manages (Q5), the 6th IGBT pipe (Q6), and the super capacitor energy storage device includes the second super capacitor (E2),
The bi-directional DC-DC includes the 4th inductance (L4), the 7th IGBT pipe (Q7), the 8th IGBT pipe (Q8), the first diode
(D1), the second diode (D2), third diode (D3), the 4th diode (D4), the 5th diode (D5), the 6th diode
(D6) three-phase bridge rectifier is formed, three ac input ends of the three-phase bridge rectifier pass through first inductance respectively
(L1), the second inductance (L2), third inductance (L3) connect power grid three-phase alternating-current supply, and the direct current of the three-phase bridge rectifier is defeated
Outlet is in parallel with the first super capacitor (E1), the first IGBT pipe (Q1) and the 2nd IGBT pipe (Q2), the third
IGBT manages (Q3) and the 4th IGBT pipe (Q4), and forward direction is composed in series the 5th IGBT pipe (Q5) respectively with the 6th IGBT pipe (Q6)
Three IGBT connect the DC output end anode of the three-phase bridge rectifier to the collector of pipe to pipe, three IGBT,
Three IGBT connect the DC output end negative terminal of the three-phase bridge rectifier to the emitter of pipe, and described three IGBT pairs
The series connection point of pipe connects the load, and the 7th IGBT pipe (Q7) and the 8th IGBT pipe (Q8) forward direction are composed in series the 4th
IGBT connects the DC output end anode of the three-phase bridge rectifier, institute to the collector of pipe to pipe, the 4th IGBT
State the DC output end negative terminal that the 4th IGBT connects the three-phase bridge rectifier to the emitter of pipe, the 4th IGBT
One end that 4th inductance (L4) connects second super capacitor (E2), the second super electricity are passed through to the series connection point of pipe
The other end for holding (E2) connects the DC output end negative terminal of the three-phase bridge rectifier, the base stage connection of all IGBT pipes
The control and drive part circuit.
2. the frequency converter according to claim 1 for having high-low voltage and passing through function, it is characterised in that: the two-way DC-
DC circuit has constant-current charge and two kinds of charge modes of floating charge to second super capacitor (E2) charging, when the described second super electricity
Hold when (E2) capacity is lower than desired value and then carry out constant-current charge, then when the second super capacitor (E2) capacity reaches desired value
Floating charge is carried out, is constant voltage discharge mode to first super capacitor (E1), when the first super capacitor (E1) voltage is lower than expectation
Constant voltage discharge is then carried out when value, i.e. the second super capacitor (E2) discharges to the first super capacitor of frequency converter (E1).
3. the frequency converter according to claim 1 for having high-low voltage and passing through function, it is characterised in that: the control and drive
Dynamic part includes control circuit and detection circuit, and the detection circuit includes super capacitor DC voltage Vdc1, frequency converter direct current
Capacitance voltage Vdc2, direct current reactive current IL, output current of frequency converter Iac, control circuit include AD sampling and micro-control unit
Chip.
4. the frequency converter according to claim 1 for having high-low voltage and passing through function, it is characterised in that: the frequency converter portion
Divide in addition to conventional func, first super capacitor (E1) can bear 1.3 times of system power supply rated line voltage peak values, while described
Inverter section has the function of constant voltage output, the control and drive part control driving IGBT conducting and shutdown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820719907.7U CN208723785U (en) | 2018-05-15 | 2018-05-15 | A kind of frequency converter for having high-low voltage and passing through function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820719907.7U CN208723785U (en) | 2018-05-15 | 2018-05-15 | A kind of frequency converter for having high-low voltage and passing through function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208723785U true CN208723785U (en) | 2019-04-09 |
Family
ID=65970619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820719907.7U Active CN208723785U (en) | 2018-05-15 | 2018-05-15 | A kind of frequency converter for having high-low voltage and passing through function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208723785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797910A (en) * | 2019-10-28 | 2020-02-14 | 天津大学 | A control method for improving low voltage ride-through capability of matrix converter system |
-
2018
- 2018-05-15 CN CN201820719907.7U patent/CN208723785U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797910A (en) * | 2019-10-28 | 2020-02-14 | 天津大学 | A control method for improving low voltage ride-through capability of matrix converter system |
| CN110797910B (en) * | 2019-10-28 | 2023-06-02 | 天津大学 | A Control Method for Improving Low Voltage Ride Through Capability of Matrix Converter System |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108777494A (en) | Collecting and distributing type light stores up charging system and its control method | |
| CN103746432B (en) | A kind of cascade connection multi-level super capacitor energy storage system and discharge mode control method | |
| CN203674793U (en) | On-line power frequency uninterrupted power supply | |
| CN205666668U (en) | Parallelly connected high efficiency of flow equalizing of modularization of crisscross mode module of charging | |
| CN203289117U (en) | High-efficient rectification and inversion integrated energy feedback system | |
| CN102355140A (en) | Concatenated multilevel inverter circuit capable of realizing energy feedback and control method | |
| CN106026164A (en) | Photovoltaic power generation system with energy storage apparatus | |
| CN101202461A (en) | Main circuit structure for changing storage battery into charge and discharge | |
| CN205693374U (en) | The Bidirectional charging-discharging device that a kind of electrical network is mutual with electric automobile energy | |
| CN104734264A (en) | Online interactive uninterruptible power supply and control method thereof | |
| CN101882878A (en) | High-power high-frequency high-voltage rectifier transformer for electric precipitation | |
| CN201956961U (en) | Energy feedback device based on power unit cascade type high voltage frequency converter | |
| TWI592358B (en) | Double power energy saving system of rubber tyre gantry crane (rtg) | |
| CN110436283A (en) | A kind of elevator energy storage control device and its control method | |
| CN1852021A (en) | L-source inventer | |
| CN201549892U (en) | DC power supply control system | |
| CN105186919A (en) | Non-isolated grid-connected converter, air conditioning system and converter control method | |
| CN104883103A (en) | Composite circuit integrating rectification, active filtering and energy consumption braking and control method thereof | |
| CN208723785U (en) | A kind of frequency converter for having high-low voltage and passing through function | |
| CN104811075B (en) | A kind of control method of combined converter | |
| CN102222965A (en) | Hybrid UPS (uninterruptible power supply) | |
| CN102255356A (en) | Efficient uninterruptible power supply | |
| CN209860804U (en) | A single-phase power topology based on cascaded high-voltage inverters | |
| CN111123143A (en) | Economical and energy-saving fuel cell DCDC converter debugging and aging system | |
| CN103166306A (en) | Uninterrupted power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |