CN214480304U

CN214480304U - Flying capacitor type three-level inverter zero common mode voltage modulation system

Info

Publication number: CN214480304U
Application number: CN202120426630.0U
Authority: CN
Inventors: 刘平; 蔡振中
Original assignee: Sunwins Technologies Suzhou Co ltd
Current assignee: Sunwins Technologies Suzhou Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-22
Anticipated expiration: 2031-02-26

Abstract

The utility model relates to an inverter technical field, concretely relates to zero common mode voltage modulation system of flying capacitor type three-level inverter, including main part, link and control panel, the front of main part is inlayed and is connected with the link. The utility model overcomes prior art's is not enough, vacuum tube and transformer one side that link up with power supply ware and auxiliary power supply respectively through circuit controller left side and upper end setting are equipped with 3 connecting harnesses and circuit controller series connection, divide into the direct current tripartition respectively leading-in power supply ware and auxiliary power supply through connecting harness after circuit controller inside direct current electric energy leading-in transformer is inside, thereby avoid circuit controller internal voltage too strong, and inside circuit controller partial electric power can pass through the leading-in auxiliary power supply of vacuum tube inside, make auxiliary power supply can carry out the electric power storage, make the dc-to-ac converter can directly not cut off all powers supplies after unexpected outage, thereby avoid the device of connecting the dc-to-ac converter to break down because of the outage suddenly.

Description

Flying capacitor type three-level inverter zero common mode voltage modulation system

Technical Field

The utility model relates to an inverter specifically is a zero common mode voltage modulation system of flying capacitor type three-level inverter.

Background

The inverter is a converter for converting direct current electric energy into constant frequency, constant voltage or frequency and voltage regulation alternating current, consists of an inverter bridge, control logic and a filter circuit, and is widely applied to air conditioners, home theaters, electric grinding wheels, electric tools, sewing machines, computers, televisions, washing machines, smoke exhaust ventilators, refrigerators, video recorders, massagers, fans, lighting and the like.

However, in the actual use process, the zero common mode voltage modulation system of the existing flying capacitor type three-level inverter cannot control the voltage intensity of the direct current inside the inverter, so that the inverter is easily overheated, the service life of the inverter is further shortened, and all power supplies are directly cut off after the inverter is powered off accidentally, so that a device connected with the inverter is easily broken down, which is not beneficial to actual use.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a flying capacitor type three-level inverter zero common mode voltage modulation system, which overcomes the defects of the prior art, has simple structural design, effectively solves the problem that the prior flying capacitor type three-level inverter zero common mode voltage modulation system can not control the voltage intensity of the direct current in the inverter in the actual use process, thereby leading the inverter to be easily overheated, further shortening the service life of the inverter, and the inverter directly cuts off all power supply after unexpected power failure, thereby leading the device connected with the inverter to be easily broken down and not beneficial to actual use, and can not send out alarm when abnormal use is used, thereby leading the inverter to be still used for a long time after the failure occurs, not only possibly causing the damage of the inverter, but also possibly causing a series of subsequent safety accidents, is not beneficial to the practical use.

In order to solve the technical problem, the utility model provides a following technical scheme:

a flying capacitor type three-level inverter zero common mode voltage modulation system comprises a main body, a connecting end and a control panel, wherein the connecting end is embedded and connected on the front surface of the main body, and the control panel is fixedly connected with one end of the left side of the surface of the connecting end;

the utility model discloses a power supply, including the link, the surperficial right side one end fixedly connected with wiring board of link, the inside fixedly connected with mainboard of main part, the top front end left side fixedly connected with circuit controller of mainboard, the top front end right side fixedly connected with power supply ware of mainboard, fixedly connected with auxiliary power source in the middle of the top of mainboard, the top rear end fixedly connected with siren of mainboard, the equal fixed connection seal cover board in the left and right sides of power supply ware.

As a preferred technical scheme of the utility model, the left and right sides of main part all is fixed with the fixed bolster that the transverse section is the form of buckling, and 2 installation screws are all installed to the inside of 4 fixed bolsters.

As a preferred technical scheme of the utility model, be equipped with the partition cover of fretwork form in the middle of the front of link, and the surface of control panel is equipped with display list and control switch respectively to 2 sunken form fixed slot inside center departments of wiring board lower extreme all are fixed with connection port.

As a preferred technical scheme of the utility model, circuit controller's left side and upper end all are equipped with the vacuum tube that links up with power supply ware and auxiliary power source respectively, and circuit controller's upper end is equipped with the transformer to transformer one side is equipped with 3 connecting wire restraints and establishes ties with circuit controller.

As a preferred technical scheme of the utility model, the top of power supply ware is equipped with the arcuation conduction pipe of establishing ties with auxiliary power supply, and auxiliary power supply's the left and right sides all is equipped with the insulating rubber tube of establishing ties with the siren to the positive left 4 reposition of redundant personnel interfaces of auxiliary power supply are inside all to be linked up and to have the allocation pipe.

As a preferred technical scheme of the utility model, the left and right sides of mainboard all is fixed with the stationary blade that the surface was equipped with the circular fixed screw of form that link up, and the top of siren is equipped with the warning light that 5 horizontal equidistance arranged form distributes.

The embodiment of the utility model provides a flying capacitor type three-level inverter zero common mode voltage modulation system possesses following beneficial effect: the device can control the direct current voltage intensity in the inverter, thereby avoid the inverter to produce overheated condition easily, and then prolonged the life of inverter to a certain extent, and the inverter can not directly cut off all supplies power after unexpected outage, thereby avoid connecting the device of inverter and breaking down because of cutting off the power supply suddenly, be favorable to in-service use, and the device can send out the police dispatch newspaper when using unusually, thereby can in time remind the user of service to change the inverter, avoid the inverter to still use for a long time after breaking down, not only avoid causing the inverter to appear damaging and avoid a series of incident that follow-up probably appears, be favorable to in-service use.

1. Set up respectively with the vacuum tube that feeder and auxiliary power linked up and transformer one side through circuit controller left side and upper end and be equipped with 3 connection pencil and establish ties with circuit controller, the leading-in transformer of the inside direct current electric energy of circuit controller is inside back to divide into the leading-in feeder and auxiliary power respectively of triplex with the direct current through the connection pencil, thereby avoid circuit controller internal voltage too strong, and inside the leading-in auxiliary power of vacuum tube of part electric power can pass through, make auxiliary power can carry out the electric power storage, make the dc-to-ac converter can directly not cut off all supplies power after unexpected outage, thereby avoid the device of connecting the dc-to-ac converter to break down because of outage suddenly, be favorable to in-service use.

2. Set up the top that the surface was equipped with stationary blade and siren that link up the circular fixed screw of form through the mainboard left and right sides, make the mainboard can fix the mainboard inside the main part through the mode with screw twist fixed screw inside, and the siren can last the scintillation when receiving auxiliary power supply abnormal voltage, remind the user of service dc-to-ac converter to break down from this, thereby can in time remind the user of service to change the dc-to-ac converter, avoid the dc-to-ac converter still to use for a long time after breaking down, not only avoid causing the dc-to-ac converter to appear damaging and avoid a series of incident that follow-up probably appears, be favorable to in-service use.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a schematic diagram of the main board structure of the present invention;

fig. 3 is an enlarged schematic view of a structure in fig. 1 according to the present invention.

In the figure: 1. a main body; 101. fixing a bracket; 102. mounting screws; 2. a connecting end; 201. a separation cover; 3. a control panel; 301. displaying the table; 302. a control switch; 4. a wiring board; 401. fixing grooves; 402. a receive port; 5. a main board; 501. a fixing sheet; 502. fixing screw holes; 6. a circuit controller; 601. a vacuum tube; 602. a transformer; 603. connecting a wire harness; 7. a power supply; 701. sealing the cover plate; 702. a conducting tube; 8. an auxiliary power supply; 801. an insulating rubber tube; 802. a shunt interface; 803. a regulating pipe; 9. an alarm; 901. an alarm light.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-3, a flying capacitor type three-level inverter zero common mode voltage modulation system includes a main body 1, a connection end 2 and a control board 3, wherein the connection end 2 is embedded and connected to the front surface of the main body 1, and the control board 3 is fixedly connected to one end of the left side of the surface of the connection end 2;

the surface right side one end fixedly connected with wiring board 4 of link 2, the inside fixedly connected with mainboard 5 of main part 1, the top front end left side fixedly connected with circuit controller 6 of mainboard 5, the top front end right side fixedly connected with power supply 7 of mainboard 5, fixedly connected with auxiliary power supply 8 in the middle of the top of mainboard 5, the top rear end fixedly connected with siren 9 of mainboard 5, the equal fixed connection seal cover plate 701 in the left and right sides of power supply 7.

Wherein, the left and right sides of the main body 1 are fixed with fixing brackets 101 with the cross section in a bending shape, and 2 mounting screws 102 are arranged in the 4 fixing brackets 101;

in this embodiment, through such a design, the main body 1 can be fixed by screwing the mounting screw 102 into the mounting device, and the cross section of the fixing bracket 101 is bent, so that the fixing bracket 101 prevents the main body 1 from directly contacting with the mounting device while lifting the main body 1, thereby effectively preventing the occurrence of streaming of power.

The middle of the front face of the connecting end 2 is provided with a hollow-out separating cover 201, the surface of the control panel 3 is respectively provided with a display meter 301 and a control switch 302, and the centers of the insides of 2 concave fixing grooves 401 at the lower end of the wiring board 4 are respectively fixed with a connecting port 402;

in this embodiment, through such a design, the connection terminal 2 can separate the control board 3 and the wiring board 4 through the partition cover 201, and simultaneously can suck the outside air into the hollow portion of the partition cover 201 to cool the main body 1, and the device is activated by pressing the control switch 302 and the power consumption can be displayed through the display table 301, and the installation device can be connected with the main body 1 for use by embedding the power device into the internal connection port 402 of the fixing groove 401.

Wherein, the left side and the upper end of the circuit controller 6 are both provided with vacuum tubes 601 respectively connected with the power supply 7 and the auxiliary power supply 8, the upper end of the circuit controller 6 is provided with a transformer 602, and one side of the transformer 602 is provided with 3 connecting wire harnesses 603 which are connected with the circuit controller 6 in series;

in this embodiment, through this kind of design, divide into the direct current with the triplex respectively and lead into power supply 7 and auxiliary power supply 8 through connecting wire harness 603 after the inside direct current electric energy of circuit controller 6 is leading into transformer 602 is inside, thereby avoid circuit controller 6 internal voltage too strong, and the partial electric power in circuit controller 6 can lead into inside auxiliary power supply 8 through vacuum tube 601, make auxiliary power supply 8 can carry out the electric power storage, make the dc-to-ac converter can not directly cut off all supplies power after unexpected outage, thereby avoid the device of connecting the dc-to-ac converter to break down because of outage suddenly, be favorable to in-service use.

Wherein, the top of the power supply 7 is provided with an arc conducting pipe 702 connected with the auxiliary power supply 8 in series, the left side and the right side of the auxiliary power supply 8 are both provided with an insulating rubber pipe 801 connected with the alarm 9 in series, and the insides of 4 shunting interfaces 802 on the left side of the front surface of the auxiliary power supply 8 are both connected with a regulating pipe 803;

in this embodiment, by such a design, the power supply 7 can introduce power into the auxiliary power supply 8 through the conducting pipe 702 to supply main driving power to the auxiliary power supply 8, and the auxiliary power supply 8 can prevent the alarm 9 from generating electric leakage when receiving the auxiliary power supply 8 through the insulating rubber pipes 801 on the left and right sides, and can distribute the electric leakage through the distribution pipe 803 on the surface of the auxiliary power supply 8 to prevent the internal voltage of the auxiliary power supply 8 from being too strong.

Wherein, the left and right sides of the main board 5 are both fixed with a fixing sheet 501 whose surface is provided with a through round fixing screw hole 502, and the top of the alarm 9 is provided with 5 alarm lamps 901 which are distributed in a transverse equidistant arrangement;

in this embodiment, through this kind of design, mainboard 5 can be fixed mainboard 5 inside main part 1 through the mode of screwing in the inside of fixed screw 502 with the screw, and siren 9 warning light 901 can continuously twinkle when receiving auxiliary power supply 8 abnormal voltage, remind the user of service inverter to break down from this, thereby can in time remind the user of service inverter to change the dc-to-ac converter, avoid the dc-to-ac converter still to use for a long time after breaking down, not only avoid causing the dc-to-ac converter to appear damaging and avoid a series of incident that follow-up probably appears, be favorable to in-service use.

The working principle is as follows: direct current electric energy in the circuit controller 6 is led into the transformer 602 and then is divided into three parts by the connecting wire harness 603 and then is led into the power supply 7 and the auxiliary power supply 8 respectively, so that the internal voltage of the circuit controller 6 is prevented from being too strong, and partial electric power in the circuit controller 6 can be led into the auxiliary power supply 8 through the vacuum tube 601, so that the auxiliary power supply 8 can store electric power, the inverter cannot directly cut off all power supply after accidental power failure, so that the device connected with the inverter is prevented from being failed due to sudden power failure, the main board 5 can be fixed in the main body 1 in a mode that screws are screwed into the fixing screw holes 502, and the alarm lamp 901 can continuously flash when the alarm 9 receives abnormal voltage of the auxiliary power supply 8, thereby reminding users of the inverter of being failed, and timely reminding users of replacing the inverter, the inverter is prevented from being used for a long time after the inverter breaks down, the inverter is prevented from being damaged and a series of subsequent possible safety accidents are avoided, the connecting end 2 can suck external air into the hollow part of the separation cover 201 to cool the main body 1 while separating the control panel 3 and the wiring board 4 through the separation cover 201, the device is started by pressing the control switch 302, the used power can be displayed through the display meter 301, and the installation equipment is connected with the main body 1 for use in a mode that the electrifying equipment is embedded into the internal connecting port 402 of the fixing groove 401.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flying capacitor type three-level inverter zero common mode voltage modulation system comprises a main body (1), a connecting end (2) and a control panel (3), and is characterized in that the connecting end (2) is embedded and connected to the front of the main body (1), and the control panel (3) is fixedly connected to one end of the left side of the surface of the connecting end (2);

the utility model discloses a power supply device, including main part (1), the inside fixedly connected with mainboard (5) of main part (1), the surperficial right side one end fixedly connected with wiring board (4) of link (2), the inside fixedly connected with mainboard (5) of main part (1), top front end left side fixedly connected with circuit controller (6) of mainboard (5), the top front end right side fixedly connected with power supply ware (7) of mainboard (5), fixedly connected with auxiliary power source (8) in the middle of the top of mainboard (5), the top rear end fixedly connected with siren (9) of mainboard (5), the equal fixed connection sealed apron (701) in the left and right sides of power supply ware (7).

2. The flying capacitor type three-level inverter zero-common mode voltage modulation system according to claim 1, wherein fixing brackets (101) with bent cross sections are fixed on the left side and the right side of the main body (1), and 2 mounting screws (102) are mounted inside each of 4 fixing brackets (101).

3. The flying capacitor type three-level inverter zero-common mode voltage modulation system according to claim 1, wherein a hollow-out separation cover (201) is arranged in the middle of the front surface of the connection terminal (2), a display meter (301) and a control switch (302) are respectively arranged on the surface of the control board (3), and a connection port (402) is fixed in the center of the inner part of each of 2 recessed fixing grooves (401) at the lower end of the wiring board (4).

4. The flying capacitor type three-level inverter zero-common mode voltage modulation system according to claim 1, wherein the left side and the upper end of the circuit controller (6) are provided with vacuum tubes (601) respectively connected with the power supply (7) and the auxiliary power supply (8), the upper end of the circuit controller (6) is provided with a transformer (602), and one side of the transformer (602) is provided with 3 connecting wire harnesses (603) connected in series with the circuit controller (6).

5. The flying capacitor type three-level inverter zero-common-mode voltage modulation system according to claim 1, wherein an arc-shaped conducting pipe (702) connected in series with the auxiliary power supply (8) is arranged at the top of the power supply (7), insulating rubber pipes (801) connected in series with the alarm (9) are arranged on the left side and the right side of the auxiliary power supply (8), and a regulating pipe (803) is connected inside 4 shunt interfaces (802) on the front left side of the auxiliary power supply (8).

6. The flying capacitor type three-level inverter zero-common-mode voltage modulation system according to claim 1, wherein fixing plates (501) with through round fixing screw holes (502) on the surfaces are fixed on the left and right sides of the main board (5), and 5 alarm lamps (901) are arranged in a transverse and equidistant manner on the top of the alarm (9).