CN203180788U - Ship-used 60 Hz shore power supply multi-level high-voltage frequency converter - Google Patents
Ship-used 60 Hz shore power supply multi-level high-voltage frequency converter Download PDFInfo
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- CN203180788U CN203180788U CN 201220646711 CN201220646711U CN203180788U CN 203180788 U CN203180788 U CN 203180788U CN 201220646711 CN201220646711 CN 201220646711 CN 201220646711 U CN201220646711 U CN 201220646711U CN 203180788 U CN203180788 U CN 203180788U
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Abstract
The utility model discloses a ship-used 60 Hz shore power supply multi-level high-voltage frequency converter characterized by comprising a dry type phase-shifting transformer for shifting phase to 10000V/50Hz three phase high voltage power supply; an output terminal of the dry type phase-shifting transformer is connected with the high-voltage frequency converter for converting frequency to the three phase power supply with shifted phase; an output terminal of the high-voltage frequency converter is connected with a step down transformer for reducing converted 60Hz sine wave power supply to voltage needed by the ship; and the step down transformer outputs 440V-470V/60Hz voltage. The ship-used 60 Hz shore power supply multi-level high-voltage frequency converter realizes direct input of 10KV high-voltage, can output perfect 60Hz sine wave power supply, so power demand of a port, a dock and a shipyard can be totally satisfied, thereby completely replacing a conventional generator and a low-voltage frequency conversion shore power supply converting device.
Description
[technical field]
The utility model relates to high voltage converter, particularly a kind of 60Hz shore electric power multi-level high-voltage frequency transformer peculiar to vessel.
[background technology]
In the past, harbour, harbour and shipbuilding and repair yards etc. are specifically designed as boats and ships provides the generator of bank electricity (60Hz), namely drive the 440V/60Hz generator by three-phase 380V/50Hz motor (synchronous or asynchronous) and on ship, power, but this supply power mode noise is big, efficient is low; The failure rate height, maintenance is inconvenient, must be by the personal management; The output voltage dynamic characteristic was poor when load increased the weight of suddenly, frequency instability etc.
Along with progress of science and technology and development, converter technique is little by little ripe, and people have expected utilizing the frequency conversion converting means to provide shore electric power for boats and ships.This converting means has can make supply frequency be transformed into the function of 60Hz by 50Hz, has higher cost performance, can provide bank to the boats and ships of different systems.
But shore electric power converting means commonly used all is to adopt the needs that are adapted to harbour, harbour and the 60Hz of shipbuilding and repair yards shore electric power, improved low voltage frequency converter.For the electricity consumption user of integrated mill, their power consumption equipment One's name is legion, place capacity is bigger, and the supply voltage grade that power supply department is delivered to user side generally all is high pressure 10kV.Therefore, this just must be transformed into low tension by step-down transformer earlier with high-tension electricity and could use this device concerning these enterprises of harbour, harbour and shipbuilding and repair yards.Concerning the user, an engineering and corresponding cost have just been increased.
Based on this reason, a lot of users can wish to have a kind of shore electric power converting means that can directly be imported by high pressure, solve the problem of 60Hz shore electric power by the solution of a cover system.Fast development along with modern power electronics technology and microelectric technique, the multi-level high-voltage converter technique is very mature and stable, it can export perfect sine wave in addition, and this let us has expected utilizing multi-level high-voltage frequency transformer to come to provide for harbour, harbour and shipbuilding and repair yards the method for 60Hz bank electricity variable frequency power supply.This high voltage converter has carried out technological improvement in conjunction with the actual conditions of harbour, harbour and shipbuilding and repair yards, realized that user 10kV high pressure directly imports, and can export perfect 60Hz sine-wave power, the electricity consumption needs of harbour, harbour and shipbuilding and repair yards can be satisfied fully, and conventional electric generators and low-voltage variable frequency shore electric power converting means can be substituted fully.
The shortcoming of prior art mainly contain following some:
(1) conventional electric generators power supply noise is big, efficient is low, failure rate is high, maintenance is inconvenient, poor, the frequency instability of output voltage dynamic characteristic etc. in the time of must being increased the weight of suddenly by personal management, load.
(2) conventional low variable frequency power supply converting means: could use this device after high-tension electricity must being transformed into low tension by step-down transformer earlier.Concerning the user, an engineering and corresponding cost have just been increased.
(3) because the frequency converter capacity required is bigger, stable home brands are difficult to choose suitable frequency converter than higher, therefore cause foreign brand name price height, cause Breakdown Maintenance cost and response time etc. all to have certain limitation simultaneously.
[utility model content]
The utility model has overcome the deficiency of above-mentioned technology, and a kind of 60Hz multi-level high-voltage frequency transformer is provided.
For achieving the above object, the utility model has adopted following technical proposal:
Be applicable to that the high voltage converter design of harbour, harbour and the 60Hz of shipbuilding and repair yards shore electric power is according to the actual conditions of harbour, particularly power is bigger, adopt high-performance, highly reliable energy-saving KA3 type power source design, namely export the 60Hz sine voltage with the line voltage of 10kV/50Hz through high voltage converter, export three groups of delta-connected 440V～470V voltages through step-down transformer again, behind capacitor filtering, provide variable frequency power supply for equipment.
A kind of 60Hz shore electric power multi-level high-voltage frequency transformer peculiar to vessel, it is characterized in that: include the dry type phase shifting transformer 1 that carries out phase shift for the three-phase high-voltage power supply to 10000V/50Hz, output at dry type phase shifting transformer 1 is connected with for the high voltage converter 2 that the three phase mains after the phase shift is carried out frequency conversion, be connected with the step-down transformer 3 that carries out step-down for to the 60Hz sine-wave power after the frequency conversion at high voltage converter 2 outputs, step-down transformer 3 outputs 440～470V/60Hz voltage.
Described a kind of 60Hz shore electric power multi-level high-voltage frequency transformer peculiar to vessel is characterized in that: between described dry type phase shifting transformer 1 input and the high voltage source service entrance switch 6 is arranged.
The beneficial effects of the utility model are:
(1) with generator relatively, energy-conservation 20 ﹪ are above, noise is few, operating cost is low, loss is low, easy to maintenance, need not the personal management etc. advantage.
(2) has stronger applicability on the function, in real time the ruuning situation of monitoring power supply.
(3) solve the problem of 60Hz shore electric power by the solution of a cover system, reduce quantities and the comprehensive cost of application mutually.
(4) equipment is selected no limitation, both can realize energy-conservationly, can also realize converting operation as required.
(5) defective of solution Breakdown Maintenance cost height and low-response, realization is low-cost to be safeguarded and the quick target that responds.
[description of drawings]
Fig. 1 is Circuits System of the present utility model.
[embodiment]
Be described in further detail below in conjunction with accompanying drawing and execution mode of the present utility model:
A kind of 60Hz shore electric power multi-level high-voltage frequency transformer peculiar to vessel, it is characterized in that: include the dry type phase shifting transformer 1 that carries out phase shift for the three-phase high-voltage power supply to 10000V/50Hz, output at dry type phase shifting transformer 1 is connected with for the high voltage converter 2 that the three phase mains after the phase shift is carried out frequency conversion, be connected with the step-down transformer 3 that carries out step-down for to the 60Hz sine-wave power after the frequency conversion at high voltage converter 2 outputs, step-down transformer 3 outputs 440～470V/60Hz voltage.
Described a kind of 60Hz shore electric power multi-level high-voltage frequency transformer peculiar to vessel is characterized in that: between described dry type phase shifting transformer 1 input and the high voltage source service entrance switch 6 is arranged.
As seen from Figure 1, line voltage 10kV/50Hz power supply enters the dry type phase shifting transformer supporting with converting means behind service entrance switch, and the secondary of phase shifting transformer is multiple secondary winding, is high voltage converter inversion side input power supply.High voltage converter get electric after, control section comes each IGBT power model inversion side output of conducting/blockade by sending the SPWM waveform, because high voltage converter adopts multiple unit IGBT power model series model, just formed the sine wave that is close to perfect harmony after the IGBT power model inversion side output stack.By the primary control program inside modulation ratio of calculating and setting, can obtain being output as the 6kV/60Hz sine voltage.This has just realized the conversion to high voltage converter output 6kV/60Hz sine voltage by line voltage 10kV/50Hz, and the output at high voltage converter connects a step-down transformer again, just can be boats and ships variable frequency power supply is provided; This step-down frequency converter can realize that the output of 60Hz high voltage converter carries out functions such as decompression transformation, isolation and filtering.
Simultaneously, the output frequency of high voltage converter is variable,, its frequency adjustment can be moved at 50Hz if needed.Among Fig. 1 there be the effect of capacitor 5: the one, and for step-down transformer provides reactive power compensation, the 2nd, output voltage is carried out filtering, reduce harmonic pollution.
Claims (2)
1. 60Hz shore electric power multi-level high-voltage frequency transformer peculiar to vessel, it is characterized in that: include the dry type phase shifting transformer (1) that carries out phase shift for the three-phase high-voltage power supply to 10000V/50Hz, output at dry type phase shifting transformer (1) is connected with for the high voltage converter (2) that the three phase mains after the phase shift is carried out frequency conversion, be connected with for the step-down transformer (3) that the 60Hz sine-wave power after the frequency conversion is depressured to required voltage peculiar to vessel step-down transformer (3) output 440～470V/60Hz voltage at high voltage converter (2) output.
2. a kind of 60Hz shore electric power multi-level high-voltage frequency transformer peculiar to vessel according to claim 1 is characterized in that: between described dry type phase shifting transformer (1) input and the high voltage source service entrance switch (6) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646711 CN203180788U (en) | 2012-11-29 | 2012-11-29 | Ship-used 60 Hz shore power supply multi-level high-voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646711 CN203180788U (en) | 2012-11-29 | 2012-11-29 | Ship-used 60 Hz shore power supply multi-level high-voltage frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203180788U true CN203180788U (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220646711 Expired - Fee Related CN203180788U (en) | 2012-11-29 | 2012-11-29 | Ship-used 60 Hz shore power supply multi-level high-voltage frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203180788U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107800136A (en) * | 2017-11-20 | 2018-03-13 | 苏州沪港科技股份有限公司 | Centralized ship shore power supply system |
-
2012
- 2012-11-29 CN CN 201220646711 patent/CN203180788U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107800136A (en) * | 2017-11-20 | 2018-03-13 | 苏州沪港科技股份有限公司 | Centralized ship shore power supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20151129 |