CN107093959A - A kind of high voltage shore power converter plant - Google Patents
A kind of high voltage shore power converter plant Download PDFInfo
- Publication number
- CN107093959A CN107093959A CN201610090104.5A CN201610090104A CN107093959A CN 107093959 A CN107093959 A CN 107093959A CN 201610090104 A CN201610090104 A CN 201610090104A CN 107093959 A CN107093959 A CN 107093959A
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- Prior art keywords
- phase
- high voltage
- converter plant
- transformer
- igbt
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of high voltage shore power converter plant, including transformer case, unit cabinet and filter cabinet, phase-shifting transformer is installed in the transformer case, transformer case upper surface is provided with the enterprising string holes of secondary cable；IGBT power cells are provided with by support in the unit cabinet, the phase-shifting transformer connects IGBT power cells, and is powered to IGBT power cells；The unit cabinet front is provided with controller, is communicated between controller and power cell by high speed fibre；It is equipped with the top of the transformer case and unit cabinet on rear side of blower fan, the blower fan and is provided with exhaust outlet.Present invention advantage compared with prior art is：The present invention realizes the purpose that input harmonics are offset, and input power factor can reach more than 0.95, without any power factor compensation device; and with superpower anti-power network fluctuation ability; frequency converter maintains operation during voltage ripple of power network -40%~+10%, does not shut down, and runs more reliable.
Description
Technical field
The present invention relates to converter plant, more particularly to a kind of high voltage shore power converter plant.
Background technology
The ship of the conventional landing pier in harbour must be sent out for 24 hours one day using marine auxiliary
Electricity, to meet the demand of ship electricity consumption, subsidiary engine burns substantial amounts of oil plant, row at work
Go out substantial amounts of waste gas, while 24 hours produce noise pollution incessantly.In order to solve
This problem, connects bank electricity system using ship and can solve the problem that the problem of existing, ship power supply
The problem of system has inconsistent with line voltage and frequency, shore electric power needs variable-frequency variable-voltage
Afterwards, this device is specifically designed for harbour shore electric power feature, using high-voltage rectifying, sine wave
Inversion output, the special variable-frequency power sources technology of microprocessor bus control.Due to output wave
Shape is sine wave, and output is apart from unrestricted, and frequency stabilization, voltage regulation performance are good, anti-negative
Lotus fluctuation ability is strong.This device also has automatic detection electric voltage frequency phase, carries synchronously simultaneously
Net soft and hardware, is automatically performed ship, bank simultaneous interconnecting function, excellent without manual intervention etc.
Point, can provide stable power supply for the ship that reaches port.
The content of the invention
The present invention is that there is provided a kind of high voltage shore power frequency conversion dress in order to solve above-mentioned deficiency
Put.
The above-mentioned purpose of the present invention is realized by following technical scheme：A kind of high pressure bank
In electric converter plant, including transformer case, unit cabinet and filter cabinet, the transformer case
Phase-shifting transformer is installed, transformer case upper surface is provided with the enterprising string holes of secondary cable；Institute
State in unit cabinet and IGBT power cells are provided with by support, the phase-shifting transformer connects
IGBT power cells are connect, and are powered to IGBT power cells；The unit cabinet front is set
There is controller, communicated between controller and power cell by high speed fibre；The transformation
It is equipped with the top of device cabinet and unit cabinet on rear side of blower fan, the blower fan and is provided with exhaust outlet.
The input of the phase-shifting transformer realizes that harmonic wave is supported using multiplex isolating transformer
Disappear, harmonic pollution is not produced to power network；The output of phase-shifting transformer uses many level conversions
Formula PWM, with relatively low harmonic wave of output voltage.
The vice-side winding of the phase-shifting transformer takes multiple inverter configuration, is mutually staggered certain
Electrical angle, to realize purpose that input harmonics are offset, input power factor can reach
More than 0.95, without any power factor compensation device.
The controller is by 32 high speed digital signal processors (DSP), special big rule
Vlsi die, touch-screen and PLC are collectively constituted；32 high-speed digital signals
Processor (DSP) uses speed-sensorless control algorithm, special extensive collection
Controlled into circuit using many level PWMs, touch-screen realizes high voltage converter and the people of user
Machine is exchanged.
The filter unit design considers that, per 6 unit series connection of phase, each power cell is opened
Pass frequency is 550Hz, because fundamental frequency 50Hz/60Hz is close, according to high fundamental wave
Frequency 60Hz designs filter parameter, it is necessary to which the harmonic voltage frequency component filtered out exists
Near 6kHz, the resonant frequency point of wave filter is designed as 2kHz or so.
The output of the IGBT power cells is controlled using many level conversion formula PWM, can
To reach that, close to sinewave output, output waveform sine degree is good, and du/dt is small, to cable
Insulation is harmless.
The IGBT power cells are three-phase input single-phase output AC-DC-AC inversion knot
Structure, the secondary of phase-shifting transformer arrives three-phase after IGBT power cells input fuse
Full-bridge diode rectifier, rectifier output forms smooth direct current through capacitor filtering,
Then by by the 4 or 8 IGBT single-phase H bridge type inverter circuits constituted, being formed
The exchange output of single-phase variable voltage variable frequency.
The controller controls defencive function, control section and height using PLC programming realizations
Laminate section is electrically completely isolated, and system has high security and antijamming capability.
The filter unit is fixed and harmonic frequency is differed very with fundamental frequency because of frequency content
Greatly, it is convenient to omit damping resistance, to simplify structure design and thermal design, with reference to ABB and
CONVERTEAM structure, electric capacity centre-point earth can be with suppression common mode component.
The speed-sensorless control algorithm controls more accurate, speed adjustable range
100:1, steady-state speed precision 0.5%.
The power cell has after auto by pass function, IGBT power model failures certainly
Dynamic bypass, system can continue run with load.
The high voltage shore power converter plant application speed-sensorless control algorithm, and
All-digitized demodulator is carried out using 32 high speed digital signal processors [DSP], with reference to special
Large scale integrated chip and latest generation IGBT power cell properties of product reach state
Border top standard.
The control panel of the IGBT power cells is multiple functional, with perfect protection work(
The IGBT drive circuit that can and optimize, mechanically and electrically performance is complete for each power cell
Unanimously, can be with rapid interchangeable.
The converter plant has superpower anti-power network fluctuation ability, voltage ripple of power network
Frequency converter maintains operation when -40%~+10%, does not shut down, and runs more reliable.
The control power supply redundancy design of the converter plant, control power supply is using two-way electricity
Source, is mutually redundant, standby each other, realizes no-harass switch, and power supply is more stable.
Present invention advantage compared with prior art is：Input side of the present invention is by phase shift transformation
Device is powered to each power cell, and the vice-side winding of phase-shifting transformer takes multiplex knot
Structure, be mutually staggered certain electrical angle, to realize the purpose of input harmonics counteracting, input
Power factor can reach more than 0.95, without any power factor compensation device.Phase shift
The secondary of transformer is whole to three phase full bridge diode after power cell input fuse
Device is flowed, rectifier output forms smooth direct current, then by by 4 through capacitor filtering
Individual or 8 IGBT compositions single-phase H bridge type inverter circuit, forms single-phase variable voltage variable frequency
Exchange output.The controller of the present invention controls defencive function using PLC programming realizations,
Communicated between controller and power cell using high speed fibre, control section and high-pressure section
Electrically completely isolated, system has high security and antijamming capability.Select
Power cell has auto by pass after auto by pass function, power model failure, and system can
Continue run with load.Frequency converter of the present invention also has superpower anti-power network fluctuation ability, electricity
Frequency converter maintains operation during net voltage pulsation -40%~+10%, does not shut down, and runs more reliable.
Brief description of the drawings
Fig. 1 is the positive structure schematic of the present invention.
Fig. 2 is the side structure schematic diagram of the present invention.
Fig. 3 is the overlooking the structure diagram of the present invention.
Fig. 4 is the internal structure schematic diagram of power cell in the present invention.
Fig. 5 is the structural representation of controller in the present invention.
Fig. 6 is the control logic block diagram of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2 and Figure 3, a kind of high voltage shore power converter plant, including become
Phase shift is installed in depressor cabinet 1, unit cabinet 2 and filter cabinet 3, the transformer case 1
Transformer 4, the upper surface of transformer case 1 is provided with the enterprising string holes 5 of secondary cable；The list
IGBT power cells 7, the phase-shifting transformer 4 are provided with by support 6 in first cabinet 2
IGBT power cells 7 are connected, and are powered to IGBT power cells 7；The unit cabinet
2 fronts are provided with controller 8, by a high speed between controller 8 and IGBT power cells 7
Optical-fibre communications；The top of transformer case 1 and unit cabinet 2 is equipped with blower fan 9, described
The rear side of blower fan 9 is provided with exhaust outlet 10.
The input of the phase-shifting transformer 4 realizes harmonic wave using multiplex isolating transformer
Offset, harmonic pollution is not produced to power network；The output of phase-shifting transformer 4 uses many level
Phase shift PWM, with relatively low harmonic wave of output voltage.
The vice-side winding of the phase-shifting transformer 4 takes multiple inverter configuration, is mutually staggered one
Fixed electrical angle, to realize the purpose of input harmonics counteracting, input power factor can reach
More than 0.95, without any power factor compensation device.
As shown in figure 5, the controller 8 is by 32 high speed digital signal processors
(DSP), specialized large scale integrated circuit, touch-screen and PLC are collectively constituted；It is described
32 high speed digital signal processors (DSP) are calculated using speed-sensorless control
Method, specialized large scale integrated circuit is controlled using many level PWMs, and touch-screen realizes high pressure
Frequency converter and the human-computer exchange of user.
The filter unit design considers that, per 6 unit series connection of phase, each power cell is opened
Pass frequency is 550Hz, because fundamental frequency 50Hz/60Hz is close, according to high fundamental wave
Frequency 60Hz designs filter parameter, it is necessary to which the harmonic voltage frequency component filtered out exists
Near 6kHz, the resonant frequency point of wave filter is designed as 2kHz or so.
As shown in figure 4, the output of the IGBT power cells 7 uses many level conversions
Formula PWM is controlled, and can reach that, close to sinewave output, output waveform sine degree is good,
Du/dt is small, harmless to cable insulation.The IGBT power cells 7 are that three-phase is defeated
Enter single-phase output AC-DC-AC inverter structure, the secondary of phase-shifting transformer 4 passes through IGBT
Three phase full bridge diode rectifier, rectifier output are arrived after the input fuse of power cell 7
Through capacitor filtering, smooth direct current is formed, then by by 4 or 8 IGBT groups
Into single-phase H bridge type inverter circuit, form the exchange output of single-phase variable voltage variable frequency.
The controller 8 using PLC programming realizations control defencive function, control section and
High-pressure section is electrically completely isolated, and system has high security and anti-interference energy
Power.
The filter unit is fixed and harmonic frequency is differed very with fundamental frequency because of frequency content
Greatly, it is convenient to omit damping resistance, to simplify structure design and thermal design, with reference to ABB and
CONVERTEAM structure, electric capacity centre-point earth can be with suppression common mode component.
The speed-sensorless control algorithm controls more accurate, speed adjustable range
100:1, steady-state speed precision 0.5%.
The power cell has after auto by pass function, IGBT power model failures certainly
Dynamic bypass, system can continue run with load.
The high voltage shore power converter plant application speed-sensorless control algorithm, and
All-digitized demodulator is carried out using 32 high speed digital signal processors [DSP], with reference to special
Large scale integrated chip and the properties of product of latest generation IGBT power cells 7 reach
The leading level in the world.
The control panel of the IGBT power cells 7 is multiple functional, with perfect protection
Function and the IGBT drive circuit of optimization, mechanically and electrically performance is complete for each power cell
It is complete consistent, can be with rapid interchangeable.
The converter plant has superpower anti-power network fluctuation ability, voltage ripple of power network
Frequency converter maintains operation when -40%~+10%, does not shut down, and runs more reliable.
The control power supply redundancy design of the converter plant, control power supply is using two-way electricity
Source, is mutually redundant, standby each other, realizes no-harass switch, and power supply is more stable.
As shown in fig. 6, apparatus of the present invention operating process is：After ship reaches port, on request
Cable is connected, manually or automatically pattern can be selected on the control panel, while also optional
Select bank electricity ship electricity in parallel or the electrically in parallel bank electricity pattern of ship.Controller 8 according to sampled signal from
It is dynamic that to shore electric power frequency modulation, pressure regulation, phase modulation, output meets the electric voltage frequency of same period requirement,
Providing ready signal simultaneously now only needs a key operation just to realize auto-parallel, load
Automatic transfer.
Embodiments of the invention are the foregoing is only, the patent of the present invention is not thereby limited
Scope, the equivalent structure or equivalent that every utilization description of the invention and accompanying drawing content are made
Flow is converted, or is directly or indirectly used in other related technical fields, is similarly wrapped
Include in the scope of patent protection of the present invention.
Claims (8)
1. a kind of high voltage shore power converter plant, it is characterised in that：Including transformer case,
Phase-shifting transformer, transformer case are installed in unit cabinet and filter cabinet, the transformer case
Upper surface is provided with the enterprising string holes of secondary cable；It is provided with the unit cabinet by support
IGBT power cells, the phase-shifting transformer connects IGBT power cells, and to IGBT
Power cell is powered；The unit cabinet front is provided with controller, controller and power cell
Between communicated by high speed fibre；Wind is equipped with the top of the transformer case and unit cabinet
Exhaust outlet is provided with rear side of machine, the blower fan.
2. a kind of high voltage shore power converter plant according to claim 1, its feature
It is：The input of the phase-shifting transformer uses multiplex isolating transformer；Phase shift transformation
The output of device uses many level conversion formula PWM.
3. a kind of high voltage shore power converter plant according to claim 1, its feature
It is：The vice-side winding of the phase-shifting transformer takes multiple inverter configuration.
4. a kind of high voltage shore power converter plant according to claim 1, its feature
It is：The controller is by 32 high speed digital signal processors (DSP), special big
Scale integrated circuit, touch-screen and PLC are collectively constituted；32 high-speed figures letter
Number processor (DSP) uses speed-sensorless control algorithm, special extensive
Integrated circuit is controlled using many level PWMs, and touch-screen realizes high voltage converter and user
Human-computer exchange.
5. a kind of high voltage shore power converter plant according to claim 1, its feature
It is：The filter unit is per 6 unit series connection of phase, each power cell switching frequency
For 550Hz.
6. a kind of high voltage shore power converter plant according to claim 1, its feature
It is：The output of the IGBT power cells is controlled using many level conversion formula PWM.
7. a kind of high voltage shore power converter plant according to claim 1, its feature
It is：The IGBT power cells are three-phase input single-phase output AC-DC-AC inversion
Structure, the secondary of phase-shifting transformer is after IGBT power cells input fuse to three
Phase full-bridge diode rectifier, rectifier output forms smooth direct current through capacitor filtering,
Then by by the 4 or 8 IGBT single-phase H bridge type inverter circuits constituted, being formed
The exchange output of single-phase variable voltage variable frequency.
8. a kind of high voltage shore power converter plant according to claim 1, its feature
It is：The power cell has auto by pass function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090104.5A CN107093959A (en) | 2016-02-17 | 2016-02-17 | A kind of high voltage shore power converter plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090104.5A CN107093959A (en) | 2016-02-17 | 2016-02-17 | A kind of high voltage shore power converter plant |
Publications (1)
| Publication Number | Publication Date |
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| CN107093959A true CN107093959A (en) | 2017-08-25 |
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ID=59646496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610090104.5A Pending CN107093959A (en) | 2016-02-17 | 2016-02-17 | A kind of high voltage shore power converter plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305461A (en) * | 2020-10-30 | 2021-02-02 | 国网重庆市电力公司电力科学研究院 | Single-phase three-phase integrated distribution transformer short-circuit resistance bearing capacity test device |
| CN113224838A (en) * | 2021-03-30 | 2021-08-06 | 中国人民解放军海军工程大学 | Fifteen-phase large-capacity induction propulsion frequency converter control framework |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202085077U (en) * | 2011-05-26 | 2011-12-21 | 江苏力普电子科技有限公司 | High-voltage frequency converter |
| CN202206300U (en) * | 2011-09-14 | 2012-04-25 | 江苏聚友电气有限公司 | Mine explosion-proof type high-voltage frequency converter |
| CN204013185U (en) * | 2014-07-29 | 2014-12-10 | 浙江航天神舟电控技术有限公司 | A kind of medium-high voltage frequency converter |
-
2016
- 2016-02-17 CN CN201610090104.5A patent/CN107093959A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202085077U (en) * | 2011-05-26 | 2011-12-21 | 江苏力普电子科技有限公司 | High-voltage frequency converter |
| CN202206300U (en) * | 2011-09-14 | 2012-04-25 | 江苏聚友电气有限公司 | Mine explosion-proof type high-voltage frequency converter |
| CN204013185U (en) * | 2014-07-29 | 2014-12-10 | 浙江航天神舟电控技术有限公司 | A kind of medium-high voltage frequency converter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305461A (en) * | 2020-10-30 | 2021-02-02 | 国网重庆市电力公司电力科学研究院 | Single-phase three-phase integrated distribution transformer short-circuit resistance bearing capacity test device |
| CN113224838A (en) * | 2021-03-30 | 2021-08-06 | 中国人民解放军海军工程大学 | Fifteen-phase large-capacity induction propulsion frequency converter control framework |
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Application publication date: 20170825 |