CN216252659U

CN216252659U - Micro-grid-connected inverter controller based on virtual synchronous generator

Info

Publication number: CN216252659U
Application number: CN202122457219.2U
Authority: CN
Inventors: 陈啟梁; 赵书琪; 王晓昕; 付光杰
Original assignee: Northeast Petroleum University
Current assignee: Northeast Petroleum University
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-04-08
Anticipated expiration: 2031-10-12

Abstract

The utility model discloses a microgrid grid-connected inverter controller based on a virtual synchronous generator, which relates to the technical field of microgrid control and comprises an outer shell and an inner shell, wherein a control panel is arranged at the middle position in the inner shell, an assembling mechanism is arranged between the outer shell and the inner shell, an elastic clamping mechanism is arranged in the inner shell, supporting pads are fixedly connected to the positions, close to corners, of the lower surface of the outer shell, four groups of fans are arranged on the front side surface of the outer shell, filter screens are arranged on the outer sides of the four groups of fans, the assembling mechanism comprises a plurality of groups of rolling wheels, and limiting rods are fixedly connected to the positions of the corners in the outer shell; the utility model has convenient combined installation function, improves the compression resistance and the falling resistance of the controller by arranging the double shells, can avoid the control panel from being damaged due to collision in the installation and use processes of the controller, has good protection function and improves the stability of the control panel.

Description

Micro-grid-connected inverter controller based on virtual synchronous generator

Technical Field

The utility model relates to the technical field of microgrid control, in particular to a microgrid grid-connected inverter controller based on a virtual synchronous generator.

Background

The virtual synchronous generator technology is a technology which enables a power supply adopting a converter to have external characteristics of grid-connected operation such as inertia, damping, primary frequency modulation, reactive voltage regulation and the like of a synchronous generator set by simulating the electromechanical transient characteristics of the synchronous generator set, the technical core of power generation and grid connection lies in a distributed power supply grid-connected inverter which can safely, stably and efficiently output high-quality electric energy or not, and is directly related to the safety and stability of a power grid, and an inverter controller is widely applied with the unique advantages.

Through retrieval, chinese patent No. CN201720485319.7 discloses an effective cost-reducing pv grid-connected inverter controller, which solves the problem of poor heat dissipation effect of the existing pv grid-connected inverter controller when in use, thereby avoiding the phenomenon of aging of the internal electronic components of the pv grid-connected inverter controller under long-term use, thereby prolonging the service life and reducing the cost, but does not have a convenient combined installation function, and the controller has poor resistance to compression and falling, and the controller is easy to collide during installation and use to cause the control panel to be damaged, and does not have a good protection function, thereby reducing the stability of the control panel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a microgrid grid-connected inverter controller based on a virtual synchronous generator, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a little grid-connected inverter controller based on virtual synchronous generator, includes shell body and interior casing, the inside intermediate position of interior casing is provided with the control panel, be provided with equipment mechanism between shell body and the interior casing, the inside of interior casing is provided with elasticity fixture, the lower surface of shell body is close to the equal fixedly connected with supporting pad in corner position, the leading flank of shell body is provided with four groups of fans, and the filter screen is all installed in the outside of four groups of fans.

As a further scheme of the utility model, the assembling mechanism comprises a plurality of groups of rolling wheels, limiting rods are fixedly connected at the inner corners of the outer shell, two groups of fixing rods are fixedly connected at the positions, close to the middle, of the two inner side walls of the inner shell, an installation cover plate is arranged at the outer side of the outer shell, a hinge is connected between the installation cover plate and the outer shell, and two groups of clamping plates are installed at the lower side of the installation cover plate.

As a further scheme of the utility model, a plurality of groups of rolling wheels are movably arranged on two side surfaces of the inner shell, the cross sections of the four groups of limiting rods are arranged in an L shape, the mounting cover plate is movably arranged on the outer side of the outer shell through a hinge, and the mounting cover plate is fixedly connected with the outer shell in a clamping manner through two groups of clamping plates.

As a further scheme of the utility model, the elastic clamping mechanism comprises two groups of movable plates, a plurality of groups of rubber pads are fixedly connected to opposite surfaces of the two groups of movable plates, five groups of movable rods are fixedly connected to opposite surfaces of the two groups of movable plates, a baffle is fixedly connected to one end, away from the control plate, of each group of movable rods, and a compression spring is sleeved on the outer side of each group of movable rods.

As a further scheme of the utility model, the two groups of movable plates are symmetrically arranged relative to the control plate, and the plurality of groups of rubber pads and the plurality of groups of movable rods are respectively distributed on two sides of the two groups of movable plates at equal intervals.

As a further scheme of the utility model, a plurality of groups of movable rods are respectively connected with two sides of the inner shell in a sliding manner, and two groups of movable plates are respectively and movably arranged in the inner shell by matching five groups of compression springs with five groups of movable rods.

Compared with the prior art, the utility model has the beneficial effects that:

1. the control panel is pegged graft through four dead levers of group and is settled including the inside of casing, rolls through a plurality of groups and takes turns four gag lever posts of cooperation with interior casing and lay the inside at the shell body, will install the apron and closely pack in the opening part of shell body through two sets of cardboards of hinge cooperation immediately, has convenient built-up fitting function, and sets up the anti ability of falling of resistance to compression that double casing has improved the controller.

2. Two sets of fly leafs move to the both sides of control panel through five groups of movable rod cooperation five groups compression spring and five groups of baffles respectively, until a plurality of rubber pads of group laminate respectively at the both sides face of control panel, can avoid the controller to bump in installation and use and cause the control panel impaired, have fine safeguard function, have improved the stability of control panel.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of an inner coupling structure of the inner case in the present invention.

Fig. 3 is a schematic view of the connection structure of the movable plate of the present invention.

Fig. 4 is a schematic internal rear view of the present invention.

In the figure: 1. an outer housing; 2. an inner housing; 3. fixing the rod; 4. a control panel; 5. a rolling wheel; 6. installing a cover plate; 7. a hinge; 8. clamping a plate; 9. a movable plate; 10. a rubber pad; 11. a movable rod; 12. a baffle plate; 13. a compression spring; 14. a fan; 15. filtering with a screen; 16. a support pad; 17. a limiting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a little grid-connected inverter controller based on virtual synchronous generator, including shell body 1 and interior casing 2, the inside intermediate position of interior casing 2 is provided with control panel 4, be provided with equipment mechanism between shell body 1 and the interior casing 2, the inside of interior casing 2 is provided with elasticity fixture, the lower surface of shell body 1 is close to the equal fixedly connected with supporting pad 16 in corner position, the leading flank of shell body 1 is provided with four groups of fans 14, and filter screen 15 is all installed in four groups of fans 14's the outside.

Referring to fig. 1, 2 and 4, in the present embodiment, the assembling mechanism includes a plurality of sets of rolling wheels 5, limiting rods 17 are fixedly connected to inner corners of the outer shell 1, two inner side walls of the inner shell 2 are fixedly connected to two sets of fixing rods 3 near the middle positions, an installation cover plate 6 is arranged on the outer side of the outer shell 1, a hinge 7 is connected between the installation cover plate 6 and the outer shell 1, two sets of clamping plates 8 are installed on the lower side of the installation cover plate 6, the plurality of sets of rolling wheels 5 are movably installed on two side surfaces of the inner shell 2, the cross-sectional shapes of the four sets of limiting rods 17 are all arranged in an L shape, the installation cover plate 6 is movably installed on the outer side of the outer shell 1 through the hinge 7, and the installation cover plate 6 is fixedly connected with the outer shell 1 through the two sets of clamping plates 8;

when the combined installation controller is used, the control panel 4 is inserted and arranged in the inner shell 2 through the four groups of fixing rods 3, then the inner shell 2 is placed in the outer shell 1 through the four groups of rolling wheels 5 matched with the limiting rods 17, the mounting cover plate 6 is tightly packaged at the opening of the outer shell 1 through the two groups of clamping plates 8 matched with the hinges 7, the combined installation function is convenient, and the anti-pressure and anti-falling capacity of the controller is improved through the two groups of fixing rods 3.

Example 2:

in this embodiment, referring to fig. 2 and 3, the present invention provides a technical solution: a microgrid grid-connected inverter controller based on a virtual synchronous generator further comprises an elastic clamping mechanism, the elastic clamping mechanism comprises two groups of movable plates 9, a plurality of groups of rubber pads 10 are fixedly connected to opposite surfaces of the two groups of movable plates 9, five groups of movable rods 11 are fixedly connected to opposite surfaces of backs of the two groups of movable plates 9, a baffle 12 is fixedly connected to one end, away from a control plate 4, of each group of movable rods 11, compression springs 13 are sleeved on the outer sides of the groups of movable rods 11, the two groups of movable plates 9 are symmetrically arranged relative to the control plate 4, the groups of rubber pads 10 and the groups of movable rods 11 are respectively distributed on two sides of the two groups of movable plates 9 at equal intervals, the groups of movable rods 11 are respectively connected with two sides of an inner shell 2 in a sliding mode, and the two groups of movable plates 9 are respectively movably mounted inside the inner shell 2 through the five groups of compression springs 13 in cooperation with the five groups of movable rods 11;

specifically, on the basis of embodiment 1, two sets of movable plates 9 move to the two sides of control panel 4 through five sets of movable rods 11 respectively matching five sets of compression springs 13 and five sets of baffles 12 until a plurality of sets of rubber pads 10 are respectively attached to the two side faces of control panel 4, so that the controller can be prevented from being damaged due to collision in the installation and use processes, and the control panel has a good protection function and improves the stability of control panel 4.

The working principle is as follows: for the utility model, firstly, a worker inserts the control panel 4 into the inner shell 2 through four groups of fixed rods 3, then the outer shell 1 is stably placed on a plane through four groups of supporting pads 16, the inner shell 2 is placed in the outer shell 1 through a plurality of groups of rolling wheels 5 matched with four groups of limiting rods 17, then the mounting cover plate 6 is tightly packaged at the opening of the outer shell 1 through a hinge 7 matched with two groups of clamping plates 8, the utility model has convenient combined mounting function, and the double shells are arranged to improve the compression resistance and the falling resistance of the controller, in the process of mounting and using the controller, two groups of movable plates 9 respectively move to two sides of the control panel 4 through five groups of movable rods 11 matched with five groups of compression springs 13 and five groups of baffles 12 until a plurality of groups of rubber pads 10 are respectively attached to two sides of the control panel 4, thereby avoiding the control panel 4 from being damaged due to collision in the mounting and using processes of the controller, the inverter controller has a good protection function, improves the stability of the control panel 4, and when the inverter controller is used, the four groups of fans 14 respectively discharge hot air emitted from the control panel 4 to the outside through the four groups of filter screens 15, so that a good dustproof heat dissipation effect is achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a little grid-connected inverter controller based on virtual synchronous generator, includes shell body (1) and interior casing (2), its characterized in that, the inside intermediate position of interior casing (2) is provided with control panel (4), be provided with equipment mechanism between shell body (1) and interior casing (2), the inside of interior casing (2) is provided with elasticity fixture, the lower surface of shell body (1) is close to the equal fixedly connected with supporting pad (16) in corner position, the leading flank of shell body (1) is provided with four group's fan (14), and filter screen (15) are all installed in the outside of four group's fan (14).

2. The microgrid grid-connected inverter controller based on a virtual synchronous generator is characterized in that the assembling mechanism comprises a plurality of sets of rolling wheels (5), limiting rods (17) are fixedly connected to the inner corners of the outer shell (1), two inner side walls of the inner shell (2) are fixedly connected with two sets of fixing rods (3) close to the middle positions, a mounting cover plate (6) is arranged on the outer side of the outer shell (1), a hinge (7) is connected between the mounting cover plate (6) and the outer shell (1), and two sets of clamping plates (8) are mounted on the lower side of the mounting cover plate (6).

3. The microgrid grid-connected inverter controller based on a virtual synchronous generator is characterized in that a plurality of groups of rolling wheels (5) are movably mounted on two side faces of an inner shell (2), four groups of limiting rods (17) are arranged in an L shape in cross section, an installation cover plate (6) is movably mounted on the outer side of the outer shell (1) through a hinge (7), and the installation cover plate (6) is fixedly connected with the outer shell (1) in a clamping mode through two groups of clamping plates (8).

4. The microgrid grid-connected inverter controller based on a virtual synchronous generator is characterized in that the elastic clamping mechanism comprises two groups of movable plates (9), a plurality of groups of rubber pads (10) are fixedly connected to opposite surfaces of the two groups of movable plates (9), five groups of movable rods (11) are fixedly connected to opposite surfaces of the two groups of movable plates (9), a plurality of groups of baffles (12) are fixedly connected to one ends, away from the control plate (4), of the movable rods (11), and compression springs (13) are sleeved on outer sides of the groups of movable rods (11).

5. The microgrid grid-connected inverter controller based on a virtual synchronous generator is characterized in that two groups of movable plates (9) are symmetrically arranged about the control plate (4), and a plurality of groups of rubber pads (10) and a plurality of groups of movable rods (11) are respectively distributed on two sides of the two groups of movable plates (9) at equal intervals.

6. The microgrid grid-connected inverter controller based on a virtual synchronous generator is characterized in that a plurality of groups of movable rods (11) are respectively connected with two sides of the inner shell (2) in a sliding manner, and two groups of movable plates (9) are respectively movably arranged inside the inner shell (2) through five groups of compression springs (13) matched with the five groups of movable rods (11).