Circuit for solving common-mode voltage interference of pouring sealant type ultrahigh-voltage power supply device

Abstract

The utility model relates to the technical field of power supply circuits, in particular to a circuit for solving common-mode voltage interference of a pouring sealant type ultrahigh-voltage power supply device, which comprises a direct-current power supply module, a high-frequency inversion module, a plurality of current transformers, a plurality of high-frequency rectification modules, a plurality of low-voltage power supply modules, a first high-voltage output port and a second high-voltage output port. The current transformer comprises a primary side and a secondary side. The ultra-high voltage power supply device is effectively divided into a low-voltage area and a high-voltage area by adopting the current transformer, so that the problem that the high-voltage power supply is broken down due to insulation and voltage resistance caused by common-mode interference of the high-voltage power supply is solved; meanwhile, the manufacturing of the ultrahigh-voltage power supply device is divided into the manufacturing of a plurality of low-voltage power supply modules, so that the cost and the manufacturing difficulty of the product are greatly reduced, and meanwhile, after the ultrahigh-voltage power supply device is damaged, fault analysis and processing are also facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply circuit technical field, concretely relates to a circuit that solves the common mode voltage interference of potting glue type ultrahigh voltage power supply device. BACKGROUND

[0002] The ultrahigh voltage power supply is applied to laser high voltage power supply, particle accelerator, pulsed accelerator power supply and high voltage demisting and the like fields.For the ultrahigh voltage power supply, with the continuous rise of voltage, how to solve the common mode voltage interference problem is the key to restrict the application of ultrahigh voltage power supply.Because the potting glue solidifies, once the problem occurs, the entire ultrahigh voltage power supply device will be unable to repair, thus there is great waste.

[0003] In addition, because the output end voltage of the ultrahigh voltage power supply is very high, when the traditional ultrahigh voltage output end is directly controlled, the design of the circuit for the ultrahigh voltage power supply is very complex, and because the output end voltage is too high, the high voltage power supply device is easily damaged, which leads to the failure of the entire power supply. SUMMARY

[0004] The utility model discloses a kind of circuits that solve the common mode voltage interference of potting glue type ultrahigh voltage power supply device, to solve the problem of the prior art.

[0005] The utility model discloses a kind of circuits that solve the common mode voltage interference of potting glue type ultrahigh voltage power supply device, to solve the problem of the prior art.

[0006] The input end of the high-frequency inverter module is connected with the direct-current power supply module;The primary side of all current transformers is connected in series at the output end of the high-frequency inverter module.

[0007] The secondary side of each current transformer is connected with the input end of one high-frequency rectifier module respectively;The output end of each high-frequency rectifier module is connected with the input end of one low-voltage power supply module respectively.

[0008] The output end of all low-voltage power supply modules is connected in series between the first high-voltage output port and the second high-voltage output port.

[0009] The utility model further sets up, the output end of high-frequency inverter module and the primary side of current transformer and the primary side between adjacent two current transformers are all connected through high-voltage power supply wire.

[0010] The utility model further sets up, high-voltage power supply insulating tube is provided with in high-voltage power supply wire outer cover.

[0011] The utility model further sets up, the circuit that solves the common mode voltage interference of potting glue formula ultrahigh voltage power supply device still includes pulse drive module, pulse drive module is connected with the control end of high frequency inverter module.

[0012] The utility model further sets up, be equipped with filter capacitor between the output of high frequency rectifier module and the input of low voltage power module.

[0013] The utility model further sets up, the output of each low voltage power module is connected with voltage acquisition module.

[0014] The utility model further sets up, the low voltage power module includes voltage doubler rectifier subassembly, voltage doubler rectifier subassembly's input is connected with the output of high frequency rectifier module.

[0015] The utility model further sets up, be equipped with electric arc detection subassembly between the input of voltage doubler rectifier subassembly and the output of voltage doubler rectifier subassembly.

[0016] The utility model further sets up, be equipped with current detection subassembly between the input of voltage doubler rectifier subassembly and the output of voltage doubler rectifier subassembly.

[0017] The utility model discloses the beneficial effect: the utility model discloses through adopting current transformer effectively ultrahigh voltage power supply device is divided into low voltage area and high voltage area, solved because high voltage power supply common mode interference problem, leads high voltage power supply because insulation withstand voltage performance and breakdown problem, simultaneously with ultrahigh voltage power supply device's making decomposes as the making of multiple low voltage power module, greatly saved the cost and the production difficulty of product, while ultrahigh voltage power supply device is damaged, also convenient for fault analysis and processing. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model is further explained with the drawings, but the embodiment in the drawing does not constitute any limit to the utility model, for the ordinary skill in the art, under the premise that does not pay the creative labor, can also obtain other drawings according to the following drawings.

[0019] Fig. 1 It is the circuit schematic diagram of the utility model;

[0020] Fig. 2 It is the circuit schematic diagram of the low voltage power module of the utility model;

[0021] The components include: 1. DC power supply module; 2. High-frequency inverter module; 3. Multiple current transformers; 4. High-frequency rectifier module; 41. Filter capacitor; 5. Low-voltage power supply module; 51. Voltage acquisition module; 61. First high-voltage output port; 62. Second high-voltage output port; 71. High-voltage resistant power supply wire; 72. High-voltage power supply insulation tube; 8. Pulse drive module; 91. Voltage multiplier rectifier assembly; 92. Arc detection assembly; 93. Current detection assembly. Detailed Implementation

[0022] The present invention will be further described in conjunction with the following embodiments.

[0023] Depend on Figs. 1-2 As can be seen, the circuit for solving common-mode voltage interference of potting compound type ultra-high voltage power supply device described in this embodiment includes a DC power supply module 1, a high-frequency inverter module 2, multiple current transformers 3, multiple high-frequency rectifier modules 4, multiple low-voltage power supply modules 5, a first high-voltage output port 61 and a second high-voltage output port 62; the current transformer includes a primary side and a secondary side.

[0024] The input terminal of the high-frequency inverter module 2 is connected to the DC power supply module 1; the primary side of all current transformers is connected in series at the output terminal of the high-frequency inverter module 2.

[0025] The secondary side of each current transformer is connected to the input terminal of a high-frequency rectifier module 4; the output terminal of each high-frequency rectifier module 4 is connected to the input terminal of a low-voltage power supply module 5.

[0026] The output terminals of all low-voltage power modules 5 are connected in series between the first high-voltage output port 61 and the second high-voltage output port 62.

[0027] Specifically, in the circuit for solving common-mode voltage interference of potting compound type ultra-high voltage power supply device described in this embodiment, DC power module 1 is used to provide power, and high-frequency inverter module 2 is used to invert the DC power of DC power module 1 into AC power to supply power to the primary side of current transformer.

[0028] In this embodiment, the primary sides of multiple current transformers 3 are connected in series at the output terminal of the high-frequency inverter module 2. The secondary sides of the current transformers are connected to the input terminals of multiple low-voltage power supply modules 5 through the high-frequency rectifier module 4. That is, each current transformer is connected to a corresponding low-voltage power supply module 5, so that the first high-voltage output port 61 and the second high-voltage output port 62 on the high-voltage side are not in direct contact with the primary side of the current transformer and the DC power supply module 1. This can effectively separate the common-mode voltage generated on the high-voltage side from the low-voltage side, and effectively solve the problem of insufficient insulation withstand voltage leading to breakdown in ultra-high voltage power supply devices due to the increase in common-mode voltage caused by the increase in power supply voltage.

[0029] The embodiment is divided into low-voltage area and high-voltage area by using the effective current transformer of the super-high voltage power supply device, solves the common mode interference problem of the high-voltage power supply, and solves the breakdown problem of the high-voltage power supply due to the insulation withstand voltage performance; meanwhile, the manufacturing of the super-high voltage power supply device is divided into the manufacturing of multiple low-voltage power supply modules 5, which greatly saves the cost and manufacturing difficulty of the product, and facilitates fault analysis and processing when the super-high voltage power supply device is damaged.

[0030] The output end of the high-frequency inverter module 2 and the primary side of the current transformer are connected by the high-voltage resistant power supply wire 71, and the primary sides of adjacent two current transformers are also connected by the high-voltage resistant power supply wire 71.

[0031] Specifically, the embodiment is powered by the direct current power supply module 1, the high-frequency pulse of the pulse driving module 8 is controlled, the high-frequency driving signal is added to the high-voltage resistant power supply wire 71 with high voltage resistance through the high-frequency inverter module 2, the high-frequency alternating current signal in the high-voltage resistant power supply wire 71 is transmitted to the secondary side of the current transformer through the induction phenomenon of the current transformer, the electrical signal of the secondary side of the current transformer is rectified through the high-frequency rectifier module 4, the harmonics are reduced, the signal quality is improved, and the electrical signal is added to the input end of the multiple low-voltage power supply modules 5, the series voltage boosting of the low-voltage power supply modules 5 is performed, and the first high-voltage output port 61 and the second high-voltage output port 62 realize super-high voltage output.

[0032] The circuit for solving the common mode voltage interference of the potting glue type super-high voltage power supply device further comprises a pulse driving module 8, and the pulse driving module 8 is connected with the control end of the high-frequency inverter module 2. Through the above setting, the direct current power supply is conveniently inverted into alternating current power supply.

[0033] The output end of the high-frequency rectifier module 4 and the input end of the low-voltage power supply module 5 are provided with a filter capacitor 41. Through the above setting, the harmonics between the high-frequency rectifier module 4 and the high-frequency inverter module 2 can be reduced, and the signal quality can be improved.

[0034] Each output end of the low-voltage power supply module 5 is connected with a voltage acquisition module 51. Through the above setting, the design difficulty of the super-high voltage sampling control circuit can be effectively reduced.

[0035] The low-voltage power module 5 comprises a voltage doubling rectification assembly 91; the input end of the voltage doubling rectification assembly 91 is connected with the output end of the high-frequency rectification module 4. Through the above setting, the voltage can be effectively boosted.

[0036] The circuit for solving the common-mode voltage interference of the potting glue type ultrahigh-voltage power supply device, the input end of the voltage doubling rectification assembly 91 is provided with an arc detection assembly 92 between the input end and the output end of the voltage doubling rectification assembly 91. Through the above setting, the low-voltage power module 5 can be arc detected.

[0037] The circuit for solving the common-mode voltage interference of the potting glue type ultrahigh-voltage power supply device, the input end of the voltage doubling rectification assembly 91 is provided with a current detection assembly 93 between the input end and the output end of the voltage doubling rectification assembly 91. Through the above setting, the low-voltage power module 5 can be output current detected.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited to the scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the present application.

Claims

1. A circuit for resolving common-mode voltage interference in potting compound-type ultra-high voltage power supply devices, characterized in that: It includes a DC power supply module (1), a high-frequency inverter module (2), multiple current transformers (3), multiple high-frequency rectifier modules (4), multiple low-voltage power supply modules (5), a first high-voltage output port (61), and a second high-voltage output port (62); the current transformers include a primary side and a secondary side; The input terminal of the high-frequency inverter module (2) is connected to the DC power supply module (1); the primary side of all current transformers is connected in series at the output terminal of the high-frequency inverter module (2); The secondary side of each current transformer is connected to the input terminal of a high-frequency rectifier module (4); the output terminal of each high-frequency rectifier module (4) is connected to the input terminal of a low-voltage power supply module (5). The output terminals of all low-voltage power supply modules (5) are connected in series between the first high-voltage output port (61) and the second high-voltage output port (62).

2. The circuit for solving common-mode voltage interference in potting compound-type ultra-high voltage power supply devices according to claim 1, characterized in that: The output terminal of the high-frequency inverter module (2) is connected to the primary side of the current transformer and to the primary side of two adjacent current transformers via high-voltage power supply wires (71).

3. The circuit for solving common-mode voltage interference in potting compound-type ultra-high voltage power supply devices according to claim 2, characterized in that: The high-voltage power conductor (71) is covered with a high-voltage power insulation tube (72).

4. The circuit for solving common-mode voltage interference in potting compound-type ultra-high voltage power supply devices according to claim 1, characterized in that: The circuit for resolving common-mode voltage interference in the potting compound type ultra-high voltage power supply device also includes a pulse drive module (8); the pulse drive module (8) is connected to the control terminal of the high-frequency inverter module (2).

5. The circuit for solving common-mode voltage interference in potting compound-type ultra-high voltage power supply devices according to claim 1, characterized in that: A filter capacitor (41) is provided between the output terminal of the high-frequency rectifier module (4) and the input terminal of the low-voltage power supply module (5).

6. The circuit for solving common-mode voltage interference in potting compound-type ultra-high voltage power supply devices according to claim 1, characterized in that: Each low-voltage power supply module (5) has a voltage acquisition module (51) connected to its output terminal.

7. The circuit for solving common-mode voltage interference in potting compound-type ultra-high voltage power supply devices according to claim 1, characterized in that: The low-voltage power supply module (5) includes a voltage doubler rectifier assembly (91); the input terminal of the voltage doubler rectifier assembly (91) is connected to the output terminal of the high-frequency rectifier module (4).

8. The circuit for solving common-mode voltage interference in potting compound-type ultra-high voltage power supply devices according to claim 7, characterized in that: An arc detection component (92) is provided between the input terminal and the output terminal of the voltage doubler rectifier component (91).

9. The circuit for solving common-mode voltage interference in potting compound-type ultra-high voltage power supply devices according to claim 7, characterized in that: A current detection component (93) is provided between the input terminal and the output terminal of the voltage doubler rectifier component (91).

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