CN108879388A - A kind of solar switch cabinet and its application method - Google Patents

A kind of solar switch cabinet and its application method Download PDF

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Publication number
CN108879388A
CN108879388A CN201810929622.0A CN201810929622A CN108879388A CN 108879388 A CN108879388 A CN 108879388A CN 201810929622 A CN201810929622 A CN 201810929622A CN 108879388 A CN108879388 A CN 108879388A
Authority
CN
China
Prior art keywords
top cover
weather shield
solar
cabinet
pieces
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.)
Pending
Application number
CN201810929622.0A
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Chinese (zh)
Inventor
顾纪阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU JINLI ELECTRIC CO Ltd
Original Assignee
JIANGSU JINLI ELECTRIC CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGSU JINLI ELECTRIC CO Ltd filed Critical JIANGSU JINLI ELECTRIC CO Ltd
Priority to CN201810929622.0A priority Critical patent/CN108879388A/en
Publication of CN108879388A publication Critical patent/CN108879388A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/28Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/30Cabinet-type casings; Parts thereof or accessories therefor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/30Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/303Bases or feet
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/30Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/38Hinged covers or doors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/46Boxes; Parts thereof or accessories therefor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/52Mobile units, e.g. for work sites
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56Cooling; Ventilation
    • H02B1/565Cooling; Ventilation for cabinets

Abstract

The present invention relates to a kind of solar switch cabinet and its application methods, belong to controller switching equipment technical field.The solar switch cabinet, including rectangular susceptor, switchgear cabinet and top cover, switchgear cabinet setting are arranged in rectangular susceptor upper end, top cover in switchgear cabinet upper end;Top cover lower end has been respectively articulated with upper weather shield close to the outside surrounding of switchgear cabinet, and rectangular susceptor upper end has been respectively articulated with lower weather shield close to the outside surrounding of switchgear cabinet;Top cover upper end is symmetrically arranged with two pieces of support plates, support plate upper end is equipped with solar panel, two pieces of support plates are hinged in one end close to each other, and the one end of two pieces of support plates far from hinged place is mounted on top cover upper end by what sliding rail can control sliding, and top cover upper center is provided with electric telescopic rod.The various devices being driven by electricity on switchgear that solar switch cabinet of the invention is generated by solar panel, reduce operating cost, the extra electricity of generation can also and in power grid, as residential electricity consumption, energy conservation and environmental protection.

Description

A kind of solar switch cabinet and its application method
Technical field
The present invention relates to a kind of solar switch cabinet and its application methods, belong to controller switching equipment technical field.
Background technique
Low-tension switch cabinet as gas-distributing motor device for converting electric energy be suitable for generate electricity, metallurgy, weaving etc. numerous industries, switch Cabinet outside line is introduced into master switch in cabinet, and subsequently into sub-control switch, each branch is set according to its needs, and such as instrument, automatic control is electronic Machine magnetic switch, various A.C. contactors etc., some also set hyperbaric chamber and low-pressure chamber switchgear, are equipped with high voltage bus, such as generate electricity Factory etc., some are additionally provided with to protect the low-frequency load reduction of capital equipment.Original switchgear works as cabinet case when radiating to inside When with external excessive temperature differentials, internal there may be condensations, cause switchgear that may be influenced by condensation, to reduce switchgear Safety, make troubles to user.And when existing switchgear uses outdoors, is generally driven and dissipated using external power supply Hot charging carries, and does not meet energy-saving and environment-friendly trend, and is easy to be influenced and make moist by rainwater, to further reduced out Close the safety and service life of cabinet.
Summary of the invention
The technical problem to be solved by the present invention is in view of the shortcomings of the prior art, propose that one kind can utilize Driven by Solar Energy The solar switch cabinet and its application method of radiator.
The technical solution that the present invention proposes to solve above-mentioned technical problem is:A kind of solar switch cabinet, including rectangle base Seat, switchgear cabinet and top cover, switchgear cabinet setting are arranged in switchgear cabinet upper end, open in rectangular susceptor upper end, top cover It closes and is provided with the first air inlet and the second air inlet on a face side wall of cabinet cabinet, the first air inlet is equipped with aerofoil fan, Second air inlet is equipped with ion blower, on a switchgear cabinet face side wall opposite with the first air inlet and the second air inlet It is provided with air outlet;
Top cover lower end has been respectively articulated with upper weather shield close to the outside surrounding of switchgear cabinet, and upper weather shield is set with top cover hinged place The first rotating electric machine is equipped with for driving weather shield to rotate along hinged place;Rectangular susceptor upper end is close to the outside of switchgear cabinet Surrounding has been respectively articulated with lower weather shield, and lower weather shield and rectangular susceptor hinged place are provided with the second rotating electric machine for driving lower block Rain plate is rotated along hinged place;
Top cover upper end is symmetrically arranged with two pieces of support plates, and support plate upper end is equipped with solar panel, and two pieces of support plates are in phase Mutually close one end is hinged, and the one end of two pieces of support plates far from hinged place can control being mounted on top cover of sliding by sliding rail End, top cover upper center are provided with electric telescopic rod close to the hinged place of two pieces of support plates, the output shaft of electric telescopic rod it is upper It holds hinged with the hinged place of two pieces of support plates.
The improvement of above-mentioned technical proposal is:Rectangular susceptor lower end has been uniformly arranged support footed glass, and rectangular susceptor lower end is also set It is equipped at least three universal wheels.
The improvement of above-mentioned technical proposal is:Temperature sensor is provided on the inner wall of switchgear cabinet.
The improvement of above-mentioned technical proposal is:Humidity sensor is additionally provided on the inner wall of switchgear cabinet.
The improvement of above-mentioned technical proposal is:Electric heater unit is provided in switchgear cabinet.
The improvement of above-mentioned technical proposal is:Top cover upper end is provided with battery, the input terminal and solar battery of battery Plate is connected by conducting wire, and the output end of battery is by conducting wire respectively at aerofoil fan, ion blower, the first rotating electric machine, the Two rotating electric machines are connected with electric telescopic rod.
The application method of solar switch cabinet of the invention, includes the following steps:
(1)In solar switch cabinet in use, opening ion blower, it is dusted and destatics;
(2)When temperature sensor detects temperature lower than 55 DEG C, aerofoil fan is closed;When temperature sensor detects temperature height When 55 DEG C, opens aerofoil fan and carry out auxiliary heat dissipation;
(3)When humidity sensor detects that relative humidity is higher than 55%, while opening electric heater unit, ion blower and axis stream Fan dehumidifies;
(4)When not raining:
A controls electric telescopic rod and shrinks, so that two pieces of support plate levels, solar panel carries out solar power generation;
B controls the first rotating electric machine and the second rotating electric machine drives upper weather shield and lower weather shield to rotate to horizontal position;
(5)When rainy:
A controls electric telescopic rod elongation, so that the hinged place of two pieces of support plates increases, two pieces of support plate inclinations are drained;
B controls the first rotating electric machine and the second rotating electric machine drives upper weather shield and lower weather shield to rotate to vertical position, prevents Rainwater is squeezed into switchgear cabinet.
The beneficial effect of the present invention by adopting the above technical scheme is:
(1)The various devices being driven by electricity on switchgear that solar switch cabinet of the invention is generated by solar panel, Reduce operating cost, the extra electricity of generation can also and in power grid, as residential electricity consumption, energy conservation and environmental protection;
(2)Solar switch cabinet of the invention is in use, unlatching ion blower, is able to carry out dedusting and destatics, and can assist Heat dissipation;
(3)Solar switch cabinet of the invention is not when raining:Electric telescopic rod is controlled to shrink, so that two pieces of support plate levels, Solar panel can receive the sunlight that all directions irradiation comes, and carry out all-weather solar power generation;Control the first electric rotating Machine and the second rotating electric machine drive upper weather shield and lower weather shield to rotate to horizontal position, and Convenient switch cabinet cabinet radiates;
(4)Solar switch cabinet of the invention is when rainy:Electric telescopic rod elongation is controlled, so that the hinged place of two pieces of support plates It increases, two pieces of support plate inclinations, can effectively carry out draining prevents rainwater from top access switch cabinet cabinet;The first rotation of control Motor and the second rotating electric machine drive upper weather shield and lower weather shield to rotate to vertical position, rainwater can be effectively prevent to squeeze into In switchgear cabinet;
(5)Solar switch cabinet of the invention when humidity sensor detect relative humidity be higher than 55% when, while open electricity plus Thermal, ion blower and aerofoil fan dehumidify, and ensure that the steady operation of solar switch cabinet, prevent due to humidity mistake The safety reduction of switchgear caused by large inner dampness or condensation and service life shorten.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is structural schematic diagram of the solar switch cabinet of the embodiment of the present invention when not raining;
Fig. 2 is structural schematic diagram of solar switch of the embodiment of the present invention cabinet when raining;
Wherein:1- solar panel, the first rotating electric machine of 2-, 3- air outlet, 4- switchgear cabinet, the second rotating electric machine of 5-, 6- supports footed glass, 7- support plate, 8- battery, 9- output shaft, 10- electric telescopic rod, 11- sliding rail, the upper weather shield of 12-, 13- the One air inlet, the second air inlet of 14-, 15- aerofoil fan, 16- ion blower, weather shield under 17-, 18- rectangular susceptor, 19- ten thousand To wheel, 20- temperature sensor, 21- humidity sensor, 22- electric heater unit, 23- top cover.
Specific embodiment
Embodiment
The solar switch cabinet of the present embodiment, as illustrated in fig. 1 and 2, including rectangular susceptor 18, switchgear cabinet 4 and top cover 23, the setting of switchgear cabinet 4 is in 18 upper end of rectangular susceptor, and top cover 23 is arranged in 4 upper end of switchgear cabinet, switchgear cabinet 4 It is provided with the first air inlet 13 and the second air inlet 14 on one face side wall, aerofoil fan 15 is installed at first air inlet 13, the Ion blower 16 is installed at two air inlets 14, switchgear cabinet 4 it is opposite with the first air inlet 13 and the second air inlet 14 one Air outlet 3 is provided on the wall of surface side;
23 lower end of top cover has been respectively articulated with upper weather shield 12, upper weather shield 12 and top cover close to the outside surrounding of switchgear cabinet 4 23 hinged places are provided with the first rotating electric machine 2 for driving weather shield 12 to rotate along hinged place;18 upper end of rectangular susceptor is close The outside surrounding of switchgear cabinet 4 has been respectively articulated with lower weather shield 17, and lower weather shield 17 is provided with 18 hinged place of rectangular susceptor Second rotating electric machine 5 is for driving lower weather shield 17 to rotate along hinged place;
23 upper end of top cover is symmetrically arranged with two pieces of support plates 7, and 7 upper end of support plate is equipped with solar panel 1, two pieces of support plates 7 is hinged in one end close to each other, and the one end of two pieces of support plates 7 far from hinged place can control being mounted on for sliding by sliding rail 11 23 upper end of top cover, 23 upper center of top cover are provided with electric telescopic rod 10, electric telescopic rod close to the hinged place of two pieces of support plates 7 The upper end of 10 output shaft 9 and the hinged place of two pieces of support plates 7 are hinged.
18 lower end of rectangular susceptor of the solar switch cabinet of the present embodiment, which has been uniformly arranged, supports footed glass 6, rectangular susceptor 18 Lower end is also set up there are four universal wheel 19.Temperature sensor 20 is provided on the inner wall of switchgear cabinet 4.Switchgear cabinet 4 Humidity sensor 21 is additionally provided on inner wall.Electric heater unit 22 is provided in switchgear cabinet 4.23 upper end of top cover is provided with storage The input terminal of battery 8, battery 8 is connect with solar panel 1 by conducting wire, and the output end of battery 8 is distinguished by conducting wire It is connected in aerofoil fan 15, ion blower 16, the first rotating electric machine 2, the second rotating electric machine 5 and electric telescopic rod 10.Battery 8 Output end also connect with electric heater unit 22 by conducting wire.Switchgear cabinet 4 is equipped with display(It is not shown in the figure), display The input terminal and temperature sensor 20 of device, connect with the output end of humidity sensor 21 for displays temperature and humidity data.
The application method of the solar switch cabinet of the present embodiment, includes the following steps:
(1)In solar switch cabinet in use, opening ion blower 16, it is dusted and destatics;
(2)When temperature sensor 20 detects temperature lower than 55 DEG C, aerofoil fan 15 is closed;When temperature sensor 20 detects When temperature is higher than 55 DEG C, opens aerofoil fan 15 and carry out auxiliary heat dissipation;
(3)When humidity sensor 21 detects that relative humidity is higher than 55%, while opening electric heater unit 22, ion blower 16 It dehumidifies with aerofoil fan 15;
(4)When not raining:
A controls electric telescopic rod 10 and shrinks, so that two pieces of support plates 7 are horizontal, solar panel 1 carries out solar power generation;
B controls the first rotating electric machine 2 and the second rotating electric machine 5 drives upper weather shield 12 and lower weather shield 17 to rotate to horizontal position It sets;
(5)When rainy:
A controls electric telescopic rod 10 and extends, so that the hinged place of two pieces of support plates 7 increases, two pieces of support plates 7 are tilted, and is arranged Water;
B controls the first rotating electric machine 2 and the second rotating electric machine 5 drives upper weather shield 12 and lower weather shield 17 to rotate to vertical position It sets, prevents rainwater from squeezing into switchgear cabinet 4.
The various dresses being driven by electricity on switchgear that the solar switch cabinet of the present embodiment is generated by solar panel Set, reduce operating cost, the extra electricity of generation can also and in power grid, as residential electricity consumption, energy conservation and environmental protection;The present embodiment Solar switch cabinet is able to carry out dedusting and destatics in use, unlatching ion blower, and can auxiliary heat dissipation;The present embodiment Solar switch cabinet is not when raining:It controls electric telescopic rod to shrink, so that two pieces of support plate levels, solar panel can connect The sunlight that all directions irradiation comes is received, all-weather solar power generation is carried out;Control the first rotating electric machine and the second rotating electric machine Weather shield and lower weather shield rotate to horizontal position in driving, and Convenient switch cabinet cabinet radiates;The solar energy of the present embodiment Switchgear is when rainy:Electric telescopic rod elongation is controlled, so that the hinged place of two pieces of support plates increases, two pieces of support plate inclinations, Draining, which can effectively be carried out, prevents rainwater from top access switch cabinet cabinet;It controls the first rotating electric machine and the second rotating electric machine drives Dynamic upper weather shield and lower weather shield rotate to vertical position, rainwater can be effectively prevent to squeeze into switchgear cabinet;The present embodiment Solar switch cabinet when humidity sensor detects that relative humidity is higher than 55%, while opening electric heater unit, ion wind Machine and aerofoil fan dehumidify, and ensure that the steady operation of solar switch cabinet, prevent due to the excessive internal wetted of humidity or The safety reduction of switchgear caused by condensation and service life shorten.
Wherein the electric pushrod of the excellent transmission Science and Technology Ltd. production of special nurse, temperature sensor can be used in electric telescopic rod 10 20 can be used the temperature sensor AD3 that the production of mayer Electronics Equipment Co., Ltd is thought in Suzhou, and Huo Ni can be used in humidity sensor 21 Wei Er Honeywell humidity sensor, electric heater unit 22 can be electric heating sheets or heating wire.Remaining electric device is adopted Existing electric device is purchased, herein a different citing.
The present invention is not limited to the above embodiment.All technical solutions formed using equivalent replacement, are all fallen within the present invention and wanted The protection scope asked.

Claims (7)

1. a kind of solar switch cabinet, it is characterised in that:Including rectangular susceptor, switchgear cabinet and top cover, the switchgear case Body setting is in the rectangular susceptor upper end, and the top cover setting is in the switchgear cabinet upper end, and the one of the switchgear cabinet It is provided with the first air inlet and the second air inlet on the wall of surface side, first air inlet is equipped with aerofoil fan, and described second Air inlet is equipped with ion blower, a switchgear cabinet surface side opposite with first air inlet and the second air inlet Air outlet is provided on wall;
The top cover lower end has been respectively articulated with upper weather shield close to the outside surrounding of the switchgear cabinet, the upper weather shield with The top cover hinged place is provided with the first rotating electric machine for driving the upper weather shield to rotate along hinged place;The rectangular susceptor Upper end has been respectively articulated with lower weather shield, the lower weather shield and the rectangular susceptor close to the outside surrounding of the switchgear cabinet Hinged place is provided with the second rotating electric machine for driving the lower weather shield to rotate along hinged place;
The top cover upper end is symmetrically arranged with two pieces of support plates, and the support plate upper end is equipped with solar panel, and described two Block support plate is hinged in one end close to each other, and the one end of two pieces of support plates far from hinged place can control sliding by sliding rail Be mounted on the top cover upper end, the top cover upper center is provided with electric expansion close to the hinged place of two pieces of support plates Bar, the upper end of the output shaft of the electric telescopic rod and the hinged place of two pieces of support plates are hinged.
2. solar switch cabinet according to claim 1, it is characterised in that:The rectangular susceptor lower end has been uniformly arranged branch Footed glass is held, the rectangular susceptor lower end is additionally provided at least three universal wheels.
3. solar switch cabinet according to claim 2, it is characterised in that:It is provided on the inner wall of the switchgear cabinet Temperature sensor.
4. solar switch cabinet according to claim 3, it is characterised in that:It is also set up on the inner wall of the switchgear cabinet There is humidity sensor.
5. solar switch cabinet according to claim 4, it is characterised in that:Electric heating is provided in the switchgear cabinet Device.
6. solar switch cabinet according to claim 5, it is characterised in that:The top cover upper end is provided with battery, institute The input terminal for stating battery is connect with the solar panel by conducting wire, and the output end of the battery is distinguished by conducting wire It is connected in the aerofoil fan, ion blower, the first rotating electric machine, the second rotating electric machine with electric telescopic rod.
7. the application method of solar switch cabinet described in -6 any claim according to claim 1, it is characterised in that:Packet Include following steps:
(1)In solar switch cabinet in use, opening ion blower, it is dusted and destatics;
(2)When temperature sensor detects temperature lower than 55 DEG C, aerofoil fan is closed;When temperature sensor detects temperature height When 55 DEG C, opens aerofoil fan and carry out auxiliary heat dissipation;
(3)When humidity sensor detects that relative humidity is higher than 55%, while opening electric heater unit, ion blower and axis stream Fan dehumidifies;
(4)When not raining:
A controls electric telescopic rod and shrinks, so that two pieces of support plate levels, solar panel carries out solar power generation;
B controls the first rotating electric machine and the second rotating electric machine drives upper weather shield and lower weather shield to rotate to horizontal position;
(5)When rainy:
A controls electric telescopic rod elongation, so that the hinged place of two pieces of support plates increases, two pieces of support plate inclinations are drained;
B controls the first rotating electric machine and the second rotating electric machine drives upper weather shield and lower weather shield to rotate to vertical position, prevents Rainwater is squeezed into switchgear cabinet.
CN201810929622.0A 2018-08-15 2018-08-15 A kind of solar switch cabinet and its application method Pending CN108879388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810929622.0A CN108879388A (en) 2018-08-15 2018-08-15 A kind of solar switch cabinet and its application method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810929622.0A CN108879388A (en) 2018-08-15 2018-08-15 A kind of solar switch cabinet and its application method

Publications (1)

Publication Number Publication Date
CN108879388A true CN108879388A (en) 2018-11-23

Family

ID=64317968

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810929622.0A Pending CN108879388A (en) 2018-08-15 2018-08-15 A kind of solar switch cabinet and its application method

Country Status (1)

Country Link
CN (1) CN108879388A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111697467A (en) * 2020-06-23 2020-09-22 淄博凯越电气有限公司 Intelligent protection device for switch cabinet and intelligent switch cabinet
CN113079668A (en) * 2021-04-07 2021-07-06 嘉兴南湖学院 Energy-saving environment-friendly wind power generation medium-voltage converter and use method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111697467A (en) * 2020-06-23 2020-09-22 淄博凯越电气有限公司 Intelligent protection device for switch cabinet and intelligent switch cabinet
CN113079668A (en) * 2021-04-07 2021-07-06 嘉兴南湖学院 Energy-saving environment-friendly wind power generation medium-voltage converter and use method thereof
CN113079668B (en) * 2021-04-07 2022-06-21 嘉兴南湖学院 Energy-saving environment-friendly wind power generation medium-voltage converter and use method thereof

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