CN101789703A - High-power variable frequency power supply device - Google Patents
High-power variable frequency power supply device Download PDFInfo
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- CN101789703A CN101789703A CN 201010003657 CN201010003657A CN101789703A CN 101789703 A CN101789703 A CN 101789703A CN 201010003657 CN201010003657 CN 201010003657 CN 201010003657 A CN201010003657 A CN 201010003657A CN 101789703 A CN101789703 A CN 101789703A
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- 238000004804 winding Methods 0.000 claims abstract description 18
- 230000010363 phase shift Effects 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009183 running Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/49—Combination of the output voltage waveforms of a plurality of converters
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Abstract
The invention discloses a high-power variable-frequency power supply device, which comprises a phase-shifting input transformer, wherein the output end of the phase-shifting input transformer is connected with a high-voltage converter, the output end of the high-voltage converter is connected with an output transformer, and the input end of the high-voltage converter is also connected with a controller; the phase-shifting input transformer comprises 3N secondary windings, the high-voltage converter is composed of a plurality of power module units, the output end of each winding is correspondingly connected with the input end of one power module unit of the high-voltage converter, and the main controller controls all the power module units of the high-voltage converter to realize power inversion output. The invention can realize the power grade of 10000kW for a single device with 300-times power, and has the advantages of higher efficiency, simpler control and lower failure rate compared with the mode of adopting a plurality of parallel devices. The high-power variable-frequency power supply device with excellent performance is widely applied to power supply of a ship repair factory.
Description
Technical field
The present invention relates to a kind of supply unit, particularly a kind of high power variable frequency power supply device.
Background technology
Traditional generator comprises that diesel engine generator or three-phase 380V/50Hz motor (synchronous or asynchronous) drive the 440V/60Hz generator and power on ship.This supply power mode shortcoming is more, and noise is big, efficient is low, loss is big; Failure rate height, maintenance be inconvenient, pollution is arranged, must be by the personal management; The output voltage dynamic characteristic is poor when particularly adding heavy duty, frequency instability or the like.
Also have a kind of state type shore electric power in addition, this power supply has 50Hz and is transformed into the 60Hz power supply function, can provide bank to the boats and ships of different systems; With generator relatively, energy-conservation more than 20%, saved more that the noise that generator brings is big, operating cost is high, loss is big, pollution arranged, inconveniences such as maintenance difficult, palpus personal management; Has stronger applicability on the function, in real time the advantages such as ruuning situation of monitoring power supply.Shortcoming is: output needs to increase filter and satisfies the power supply needs; Input side is big to mains by harmonics, needs the increase device to come filtering as improving; The separate unit capacity is all done not quite usually, and maximum separate unit is accomplished hundreds of kilowatt, needs many parallel runnings if realize big capacity, and the control difficulty increases the also corresponding raising of equipment failure rate; Complicated operation, maintenance strengthens.
Because countries in the world mains frequency standard is inconsistent, main at present two kinds of frequencies, i.e. two kinds of frequencies of 50Hz and 60Hz of existing.Some shipyards at home and abroad, dock repair shop etc., can be country variant manufacturing and maintenance ship, and these producer's station services all are 50 or the 60Hz power supply of this domestic fixedly standard, need frequency conversion apparatus when so just running into the boats and ships of different systems country.Different shipyards or dock repair shop need the conversion equipment of different capabilities, use very dumb, inconvenient.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this invention is to provide the high power variable frequency power supply device that a kind of frequency and voltage are adjustable, efficient is high, failure rate is low.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high power variable frequency power supply device, comprise the phase shift input transformer, the output of described phase shift input transformer is connected with high tension transformer, and the output of described high tension transformer is connected with output transformer, and the input of described high tension transformer also is connected with controller; Described phase shift input transformer comprises 3N secondary winding, described high tension transformer is made up of a plurality of power models unit, the output correspondence of described each winding is connected with the input of a power model unit of high tension transformer, and described main controller is realized power inverters output by all power model unit of control high tension transformer.
Further, the every of described high tension transformer is that N power model is unit cascaded mutually.
Further, to count N be 4-10 in described cascade.
Further, to count N be 6 in described cascade.
Further, the output of described output transformer is connected with building-out capacitor.
Further, the input of described phase shift input transformer is connected with the subscriber's drop switch, and the output of described output transformer is connected with the user and goes out wiretap.
Further, the secondary winding of described phase shift input transformer is divided into 6 different phase-group, 10 ° of electrical degrees of described phase-group mutual deviation.
Further, the power supply push-pull output circuit is mainly formed by the IGBT power tube in the power model unit of described high tension transformer.
Further, all power model unit of described controller output pulse width modulation (PWM) waveform signal control high tension transformer.
The invention has the beneficial effects as follows: the present invention can realize the power grade of separate unit 300-10000KW, has the advantage that efficient is higher, control is more simple, failure rate is lower for adopting many parallel waies.Phase-shifting rectifier transformer is adopted in input, secondary has a plurality of windings, a plurality of level superimposing techniques are adopted in output, feasible pollution to electrical network significantly reduces, and need not to increase harmonic treating apparatus and just can satisfy the requirement of IEEE519～1992 and GB/T14519～93 standards to voltage distortion and current harmonics fully.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is that master of the present invention is electrically connected block diagram;
Fig. 2 is a power model schematic diagram of the present invention;
Fig. 3 is high tension transformer output principle figure of the present invention;
Fig. 4 is a single unit system principle schematic of the present invention.
Embodiment
With reference to Fig. 1, a kind of high power variable frequency power supply device comprises phase shift input transformer 1, and the output of described phase shift input transformer 1 is connected with high tension transformer 2, the output of described high tension transformer 2 is connected with output transformer 3, and the input of described high tension transformer 2 also is connected with controller 7; Described phase shift input transformer 1 comprises 3N secondary winding, described high tension transformer 2 is made up of a plurality of power models unit, the output correspondence of described each winding is connected with the input of a power model unit of high tension transformer 2, and described main controller 7 is realized power inverters output by all power model unit of control high tension transformer 2.
Further, the every of described high tension transformer 2 is that N power model is unit cascaded mutually.
Further, to count N be 4-10 in described cascade.
Further, to count N be 6 in described cascade.
Further, the output of described output transformer 3 is connected with building-out capacitor 6.
With further reference to Fig. 1, the input of described phase shift input transformer 1 is connected with subscriber's drop switch 4, and the output of described output transformer 3 is connected with the user and goes out wiretap 5.
With further reference to Fig. 4, the secondary winding of described phase shift input transformer 1 is divided into 6 different phase-group, 10 ° of electrical degrees of described phase-group mutual deviation.
With further reference to Fig. 2 and 3, the power supply push-pull output circuit is mainly formed by the IGBT power tube in the power model unit of described high tension transformer 2.
Further, all power model unit of described controller 7 output pulse width modulation (PWM) waveform signals control high tension transformer 2.
As shown in Figure 1, a kind of frequency changing power device mainly is made up of subscriber's drop switch, input phase shifting transformer, high tension transformer, output transformer, subscriber's drop switch.User's station service enters phase shifting transformer through input switch, phase shifting transformer secondary output 3N group three-phase voltage, supplying with 3N module of high tension transformer respectively uses, each module is according to the corresponding PWM ripple of master control system instruction output, the output of every phase N module is together in series mutually, forms every output mutually, through output transformer, go out wiretap to the user again, obtain the electric pressure of the specification of user's needs; Among Fig. 1 there be the effect of capacitor: the one, and for step-down transformer provides reactive power compensation, the 2nd, output voltage is carried out filtering, reduce harmonic pollution, can match according to user's needs.
Electrical network (10kV/50Hz or 10KV/60Hz or other, by user's station service decision) power supply enters the input phase shifting transformer behind subscriber switch, the phase shifting transformer secondary adopts multipleization phase shift design, this transformer secondary is 3N winding altogether, each winding is a module (the every phase N in the high tension transformer, three-phase is 3N module altogether) provide the module needs three phase mains, corresponding phase shift angle at same per three windings that list is consistent, transformer secondary winding phase shifting angle is the 60/N degree between row and the row, for whole transformer, be exactly the 6N pulse wave rectifier like this.As shown in Figure 4, with 6KV, 6 grades of secondary windings are example, adopt extend-triangle to connect, secondary winding is divided into 6 different phase-group, 10 ° of electrical degrees of mutual deviation have ± 5 ° ± 15 ° respectively, ± 25 °, this phase shift connection can be eliminated the harmonic wave below 36 times in theory, can not meet the requirement of IEEE519～1992 and GB/T14519～93 standards to voltage distortion and current harmonics fully above the harmonic wave of national standard to electrical network.
Fig. 2 is module principle figure, each module of converter get electric after, control section comes the output of each module inversion side of conducting/blockade by sending the SPWM waveform; As shown in Figure 3, the every individual unit cascaded pattern of N that adopts mutually of high tension transformer, just formed the sine wave that is close to perfect harmony after the module inversion side output stack, this output meets IEEE519～1992 and GB/T14519～93 standards fully to the requirement of voltage distortion and current harmonics, does not need to increase in addition filter.
High tension transformer outputs to output transformer, just can be the power supply that the user provides to be needed; This transformer can be realized the functions such as output buck conversion, isolation and filtering of high tension transformer.Outlet side at this transformer in the control detects voltage output, and the output of setting according to the user compares, and adopts closed-loop control, guarantees that output voltage is constant, and significantly fluctuation can not arranged because of the fluctuation output voltage of load.
More than be that preferable enforcement of the present invention is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (10)
1. high power variable frequency power supply device, it is characterized in that: comprise phase shift input transformer (1), the output of described phase shift input transformer (1) is connected with high tension transformer (2), the output of described high tension transformer (2) is connected with output transformer (3), and the input of described high tension transformer (2) also is connected with controller (7); Described phase shift input transformer (1) comprises 3N secondary winding, described high tension transformer (2) is made up of a plurality of power models unit, the output correspondence of described each winding is connected with the input of a power model unit of high tension transformer (2), and described main controller (7) is realized power inverters output by all power model unit of control high tension transformer (2).
2. a kind of high power variable frequency power supply device according to claim 1 is characterized in that: the every of described high tension transformer (2) is that N power model is unit cascaded mutually.
3. a kind of high power variable frequency power supply device according to claim 2 is characterized in that: it is 4-10 that N is counted in described cascade.
4. a kind of high power variable frequency power supply device according to claim 3 is characterized in that: it is 6 that N is counted in described cascade.
5. according to each described a kind of high power variable frequency power supply device of claim 1 to 4, it is characterized in that: the output of described output transformer (3) is connected with building-out capacitor (6).
6. according to each described a kind of high power variable frequency power supply device of claim 1 to 4, it is characterized in that: the input of described phase shift input transformer (1) is connected with subscriber's drop switch (4), and the output of described output transformer (3) is connected with the user and goes out wiretap (5).
7. a kind of high power variable frequency power supply device according to claim 5 is characterized in that: the input of described phase shift input transformer (1) is connected with subscriber's drop switch (4), and the output of described output transformer (3) is connected with the user and goes out wiretap (5).
8. a kind of high power variable frequency power supply device according to claim 4 is characterized in that: the secondary winding of described phase shift input transformer (1) is divided into 6 different phase-group, 10 ° of electrical degrees of described phase-group mutual deviation.
9. a kind of high power variable frequency power supply device according to claim 1 is characterized in that: the power supply push-pull output circuit is mainly formed by the IGBT power tube in the power model unit of described high tension transformer (2).
10. a kind of high power variable frequency power supply device according to claim 1 is characterized in that: all power model unit of described controller (7) output pulse width modulation (PWM) waveform signal control high tension transformer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010003657 CN101789703A (en) | 2010-01-05 | 2010-01-05 | High-power variable frequency power supply device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010003657 CN101789703A (en) | 2010-01-05 | 2010-01-05 | High-power variable frequency power supply device |
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| CN101789703A true CN101789703A (en) | 2010-07-28 |
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| CN 201010003657 Pending CN101789703A (en) | 2010-01-05 | 2010-01-05 | High-power variable frequency power supply device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248240A (en) * | 2013-04-11 | 2013-08-14 | 株洲变流技术国家工程研究中心有限公司 | Experimental power supply system for high-voltage electric pump |
| CN106849087A (en) * | 2017-01-09 | 2017-06-13 | 中交航局安装工程有限公司 | A kind of bank electricity system for being applied to bulk cargo terminals |
| CN107134782A (en) * | 2016-02-29 | 2017-09-05 | 上海港蓝环保科技有限公司 | A kind of high pressure constant frequency pressure regulating regulated power supply system provided with intelligence control system |
| CN107134781A (en) * | 2016-02-29 | 2017-09-05 | 上海港蓝环保科技有限公司 | A kind of high pressure constant frequency pressure regulating regulated power supply system |
| CN111786571A (en) * | 2020-05-22 | 2020-10-16 | 中车株洲电力机车研究所有限公司 | Test power supply of rail transit equipment and control method thereof |
-
2010
- 2010-01-05 CN CN 201010003657 patent/CN101789703A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248240A (en) * | 2013-04-11 | 2013-08-14 | 株洲变流技术国家工程研究中心有限公司 | Experimental power supply system for high-voltage electric pump |
| CN107134782A (en) * | 2016-02-29 | 2017-09-05 | 上海港蓝环保科技有限公司 | A kind of high pressure constant frequency pressure regulating regulated power supply system provided with intelligence control system |
| CN107134781A (en) * | 2016-02-29 | 2017-09-05 | 上海港蓝环保科技有限公司 | A kind of high pressure constant frequency pressure regulating regulated power supply system |
| CN106849087A (en) * | 2017-01-09 | 2017-06-13 | 中交航局安装工程有限公司 | A kind of bank electricity system for being applied to bulk cargo terminals |
| CN111786571A (en) * | 2020-05-22 | 2020-10-16 | 中车株洲电力机车研究所有限公司 | Test power supply of rail transit equipment and control method thereof |
| CN111786571B (en) * | 2020-05-22 | 2024-04-19 | 中车株洲电力机车研究所有限公司 | Test power supply of rail transit equipment and control method thereof |
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Application publication date: 20100728 |