CN105262344A - Expandable long-distance power transmission frequency-converter device - Google Patents
Expandable long-distance power transmission frequency-converter device Download PDFInfo
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- CN105262344A CN105262344A CN201510780160.7A CN201510780160A CN105262344A CN 105262344 A CN105262344 A CN 105262344A CN 201510780160 A CN201510780160 A CN 201510780160A CN 105262344 A CN105262344 A CN 105262344A
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Abstract
The invention discloses an expandable long-distance power transmission frequency-converter device, which comprises N rectifier modules, N inverter modules, an EMI filter, and a control unit. The N rectifier modules are connected in parallel with the mains supply. The input ends of the N inverter modules are connected with the output ends of the rectifier modules. The output ends of the N inverter modules are connected in series and then are connected with the EMI filter. The output end of the EMI filter is used for being connected with a load. The rectifying signal interface end of each rectifier module is connected with the rectifying control signal port of the control unit. The inverter signal interface end of each inverter module is connected with the inverter control signal port of the control unit. According to the technical scheme of the invention, the alternating current of the mains supply is converted into N direct-current voltages by N rectifier modules, wherein the input ends of the N rectifier modules are connected in parallel. Meanwhile, the N direct-current voltages are further improved. By means of the N inverter modules, the power supply is inverted based on the N increased direct-current voltages. The output ends of the N rectifier modules are connected in series, so that the variable-frequency high-voltage alternating current is realized.
Description
Technical field
The invention belongs to power electronic equipment field, relate to a kind of power transfer, be specifically related to a kind of extendible remote delivery of electrical energy converter plant.
Background technology
In the field such as oil gas, coal mining, electric equipment is operated in the down-hole of thousands of meters, and wherein the equipment such as blower fan water pump submersible electric machine with oil needs variable frequency power supply to power to realize converting operation, rotational speed regulation to the requirement meeting mechanical load, and energy savings simultaneously.And subsurface environment is severe, flammable explosive gas is more, adopts aboveground variable frequency power supply long distance power transmission safer.There is following problem in the variable frequency power supply of this field application at present:
1, existing converter plant is for given load design, and its output voltage maximum and power output maximum are fixed, and can not adapt to unequally loaded requirement, when loading demand changes, need redesign the converter plant that exploitation is new;
2, existing converter plant Harmonics of Input content is large, and power factor is low, easily causes severe contamination to electrical network;
3, need the cable that lays longer owing to powering to down-hole and remote equipment, cable can produce very large pressure drop, therefore power supply needs correspondingly boosted output voltages, the Industrial Frequency Transformer that general power supply outside is equipped with volume very large carrys out boosted voltage, or be equipped with bulky Industrial Frequency Transformer at power source internal and carry out boosted voltage, but be increased volume and the cost of device.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides a kind of extendible remote delivery of electrical energy converter plant, its object is to solve existing converter plant output voltage maximum and power output maximum fixes nonadjustable technical problem.
For achieving the above object, according to one aspect of the present invention, provide a kind of extendible remote delivery of electrical energy converter plant, comprise N number of rectifier module, N number of inverter module, electromagnetic interface filter and control unit;
Wherein, the first input end of i-th rectifier module connects civil power live wire, and second input of the second input and (i+1) individual rectifier module also connects civil power zero line;
The first end of i-th inverter module connects the 3rd end of i-th rectifier module, and the second end connects the 4th end of i-th rectifier module;
4th end of i-th inverter module is connected with the 3rd end of (i+1) individual inverter module; The first end of electromagnetic interface filter connects the 3rd end of first inverter module, and the second end connects the 4th end of N number of inverter module; 3rd end of electromagnetic interface filter with the 4th end for being connected load; Wherein, 1≤i≤N, N is not less than 2;
The rectify control signal port i of the rectified signal interface end connection control unit of i-th rectifier module; Rectifier module exports rectified signal to control unit by this rectified signal interface end, the control signal that reception control unit exports and 24V power supply; The inverter control signal port i of the inverter signal interface end connection control unit of i-th inverter module; Inverter module is by inverter signal port output voltage current analog signal and level signal to control unit, and reception comprises control unit is sent to the drive singal of inverter module, reset signal and 24V power supply.
Preferably, rectifier module comprises Single-phase PFC converter and high-frequency isolation boost controlled resonant converter; The first end of Single-phase PFC converter is as the first input end of rectifier module, and the second end is as the second input of rectifier module;
The first end of high-frequency isolation boost controlled resonant converter connects the 3rd end of Single-phase PFC converter, and the second end connects the 4th end of Single-phase PFC converter; 3rd end of high-frequency isolation boost controlled resonant converter is as the 3rd end of rectifier module, and the 4th end is as the 4th end of rectifier module.
Preferably, inverter module adopts H bridge inverter; The five terminal of H bridge inverter is as the inverter signal interface end of inverter module.
Remote delivery of electrical energy converter plant provided by the invention be input as civil power, by the Single-phase PFC converter of N number of input parallel connection, mains electricity is transformed to N number of direct voltage; By high-frequency isolation boost controlled resonant converter, N number of direct voltage is improved further again; N number of H bridge inverter carries out inversion with the direct voltage after raising for power supply; The output series connection of N number of H bridge inverter, realizes the High Level AC Voltage of variable frequency.
In general, the above technical scheme conceived by the present invention compared with prior art, can obtain following beneficial effect:
(1) remote delivery of electrical energy converter plant provided by the invention, the quantity of its Single-phase PFC converter, high-frequency isolation boost controlled resonant converter, H bridge inverter can adjust flexibly according to load capacity requirement, avoids carrying out design iterations and debugging because of the power demand difference of distinct device;
(2) remote delivery of electrical energy converter plant provided by the invention, adopt high frequency PFC rectification, Harmonics of Input content is few, and power factor is high, reduces the harmonic pollution to electrical network and reactive requirement, reduces the interference to other power consumption equipments;
(3) remote delivery of electrical energy converter plant provided by the invention, adopts high-frequency isolation boost controlled resonant converter, decreases the volume of magnetic device and variable frequency power supply complete machine.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the extendible remote delivery of electrical energy converter plant that the embodiment of the present invention provides;
Fig. 2 is Single-phase PFC converter terminal numbering schematic diagram;
Fig. 3 is high-frequency isolation boost controlled resonant converter numbering schematic diagram;
Fig. 4 is rectifier module terminal numbering schematic diagram;
Fig. 5 is inverter module terminal numbering schematic diagram;
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein: 1-first rectifier, 2-second rectifier, 3-the 3rd rectifier, 4-the 4th rectifier, 5-first inverter, 6-second inverter, 7-the 3rd inverter, 8-the 4th inverter, 9-EMI filter, 10-load, 11-control unit.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each execution mode of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
Below in conjunction with the drawings and specific embodiments, extendible remote delivery of electrical energy converter plant provided by the invention is described in detail.The extendible remote delivery of electrical energy converter plant that embodiment provides, as shown in Figure 1, comprises the rectifier module (1,2 that 4 inputs are in parallel, 3,4), 4 export the inverter module (5,6 of series connection, 7,8), electromagnetic interface filter 9 and control unit 11; The terminal numbering of modules and converter is as Fig. 2 ~ illustrated in Figure 5;
Wherein, the first end of 4 rectifier modules connects and all connects civil power, and 4 rectifier module second ends are in parallel; The first end of the first inverter module 5 connects the 3rd end of the first rectifier module 1, and the second end connects the 4th end of the first rectifier module 1; The first end of the second inverter module 6 connects the 3rd end of the second rectifier module 2, and the second end connects the 4th end of the second rectifier module 2; The first end of the 3rd inverter module 7 connects the 3rd end of the 3rd rectifier module 3, and the second end connects the 4th end of the 3rd rectifier module 3; The first end of the 4th inverter module 8 connects the 3rd end of the 4th rectifier module 4, and the second end connects the 4th end of the 4th rectifier module 4;
4th end of the first inverter module 5 is connected with the 3rd end of the second inverter module 6,4th end of the second inverter module 6 is connected with the 3rd end of the 3rd inverter module 7, and the 4th end of the 3rd inverter module 7 is connected with the 3rd end of the 4th inverter module 8; The first end of electromagnetic interface filter 9 connects the 3rd end of the first inverter module 5, and the second end connects the 4th end of the 4th inverter module 8; 3rd end of electromagnetic interface filter 9 with the 4th end for being connected remote load 10;
First rectify control signal port of the five terminal connection control unit 11 of the first rectifier module 1, second rectify control signal port of the five terminal connection control unit 11 of the second rectifier module 2,3rd rectify control signal port of the five terminal connection control unit 11 of the 3rd rectifier module 3, the 4th rectify control signal port of the five terminal connection control unit 11 of the 4th rectifier module 4;
First inverter control signal port of the five terminal connection control unit of the first inverter module 5, second inverter control signal port of the five terminal connection control unit of the second inverter module 6,3rd inverter control signal port of the five terminal connection control unit of the 3rd inverter module 7, the 4th inverter control signal port of the five terminal connection control unit of the 4th inverter module 8;
4 rectifier modules are identical, and 4 inverter modules are also identical, and control unit 11 has at least 4 rectified signal interfaces and at least 4 inverter signal interfaces; Can hold at least 4 rectifier module input parallel runnings, at least 4 inverter modules export series operation;
Each rectifier adopts identical control signal, feedback signal, and each inverter adopts identical control signal, feedback signal; Increase at input side the peak power output that rectifier module just can increase system, increase at outlet side the maximum output voltage that inverter module just can increase system.
Same, if the power of load and voltage request reduce, reduce the peak power output that input side rectifier module can reduce converter plant, reduce the maximum output voltage that outlet side inverter module can reduce system; Expansion and this remote delivery of electrical energy converter plant of cutting all easily, without the need to development and Design again.
In embodiment, the front stage converter of rectifier adopts pfc converter, has input current waveform good, the feature that power factor is high; The second level of rectifier adopts high-frequency resonant isolation boosting converter, and reduce the volume of magnetic device, realize the isolation of the DC bus of each inverter, harmonic technology reduces the switching loss of power device, improves the efficiency of system.
The inverter of the extendible remote delivery of electrical energy converter plant that embodiment provides adopts digital control, and output voltage frequency is adjustable; The extendible remote delivery of electrical energy converter plant that embodiment provides, adopts touch-screen as man-machine interface, can arrange the system parameters such as module number, output voltage frequency; And its control unit has RS485, CAN communication interface, can with other device group-net communications.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. an extendible remote delivery of electrical energy converter plant, is characterized in that, comprises N number of rectifier module, N number of inverter module, electromagnetic interface filter and control unit;
Wherein, the first input end of i-th rectifier module connects civil power live wire, and second input of the second input and (i+1) individual rectifier module also connects civil power zero line;
The first end of i-th inverter module connects the 3rd end of i-th rectifier module, and the second end connects the 4th end of i-th rectifier module;
4th end of i-th inverter module is connected with the 3rd end of (i+1) individual inverter module; The first end of electromagnetic interface filter connects the 3rd end of first inverter module, and the second end connects the 4th end of N number of inverter module; 3rd end of electromagnetic interface filter with the 4th end for being connected load;
The rectify control signal port i of the rectified signal interface end connection control unit of i-th rectifier module; The inverter control signal port i of the inverter signal interface end connection control unit of i-th inverter module; 1≤i≤N; N is not less than 2.
2. remote delivery of electrical energy converter plant as claimed in claim 1, it is characterized in that, described rectifier module comprises Single-phase PFC converter and high-frequency isolation boost controlled resonant converter; The first end of Single-phase PFC converter is as the first input end of rectifier module, and the second end is as the second input of rectifier module;
The first end of high-frequency isolation boost controlled resonant converter connects the 3rd end of Single-phase PFC converter, and the second end connects the 4th end of Single-phase PFC converter; 3rd end of high-frequency isolation boost controlled resonant converter is as the 3rd end of rectifier module, and the 4th end is as the 4th end of rectifier module.
3. remote delivery of electrical energy converter plant as claimed in claim 1 or 2, it is characterized in that, described inverter module adopts H bridge inverter; The five terminal of H bridge inverter is as the inverter control signal interface end of inverter module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510780160.7A CN105262344A (en) | 2015-11-14 | 2015-11-14 | Expandable long-distance power transmission frequency-converter device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510780160.7A CN105262344A (en) | 2015-11-14 | 2015-11-14 | Expandable long-distance power transmission frequency-converter device |
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| CN105262344A true CN105262344A (en) | 2016-01-20 |
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| CN201510780160.7A Pending CN105262344A (en) | 2015-11-14 | 2015-11-14 | Expandable long-distance power transmission frequency-converter device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196524A (en) * | 2017-07-20 | 2017-09-22 | 云南电网有限责任公司电力科学研究院 | A kind of GIS voltage transformers verifying power supply |
| CN111193413A (en) * | 2018-11-15 | 2020-05-22 | 航天科工惯性技术有限公司 | Power supply equipment and system for oil-water separation |
| CN111193414A (en) * | 2018-11-15 | 2020-05-22 | 航天科工惯性技术有限公司 | Environment self-adaptive oil-water separation power supply equipment and system |
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| US20020074862A1 (en) * | 2000-12-15 | 2002-06-20 | Ryohei Saga | Parallel power source system |
| CN101800483A (en) * | 2010-02-09 | 2010-08-11 | 艾默生网络能源有限公司 | Voltage converter |
| CN102064712A (en) * | 2010-12-24 | 2011-05-18 | 东南大学 | Power electronic transformer based on simple PFC (Power Factor Correction) |
| CN205123596U (en) * | 2015-11-14 | 2016-03-30 | 武汉华海通用电气有限公司 | Remote power transfer variable frequency device of extensible |
-
2015
- 2015-11-14 CN CN201510780160.7A patent/CN105262344A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020074862A1 (en) * | 2000-12-15 | 2002-06-20 | Ryohei Saga | Parallel power source system |
| CN101800483A (en) * | 2010-02-09 | 2010-08-11 | 艾默生网络能源有限公司 | Voltage converter |
| CN102064712A (en) * | 2010-12-24 | 2011-05-18 | 东南大学 | Power electronic transformer based on simple PFC (Power Factor Correction) |
| CN205123596U (en) * | 2015-11-14 | 2016-03-30 | 武汉华海通用电气有限公司 | Remote power transfer variable frequency device of extensible |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196524A (en) * | 2017-07-20 | 2017-09-22 | 云南电网有限责任公司电力科学研究院 | A kind of GIS voltage transformers verifying power supply |
| CN111193413A (en) * | 2018-11-15 | 2020-05-22 | 航天科工惯性技术有限公司 | Power supply equipment and system for oil-water separation |
| CN111193414A (en) * | 2018-11-15 | 2020-05-22 | 航天科工惯性技术有限公司 | Environment self-adaptive oil-water separation power supply equipment and system |
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