CN217135354U - Novel high-voltage variable-frequency power unit - Google Patents
Novel high-voltage variable-frequency power unit Download PDFInfo
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- CN217135354U CN217135354U CN202123376029.4U CN202123376029U CN217135354U CN 217135354 U CN217135354 U CN 217135354U CN 202123376029 U CN202123376029 U CN 202123376029U CN 217135354 U CN217135354 U CN 217135354U
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- radiator
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Abstract
The utility model relates to a novel high-voltage variable-frequency power unit, which comprises a radiator, a rectifier bridge connecting row, a filtering energy-storage capacitor and the like, wherein the radiator is fastened at the upper part of a sheet metal case, and fins of the radiator are surrounded by a bent sheet metal plate to form a closed air duct; the rectifier bridge connecting rows are connected with the rectifier diode modules, and insulating paper is used between the two rows to meet the insulating requirement; all the filtering energy storage capacitors are connected in parallel to the direct current bus bar, and the end connected with the IGBT module uses insulating paper to meet the insulating requirement between the positive direct current bus bar and the negative direct current bus bar. The utility model discloses structural compactness and the electric replaceability have been considered simultaneously, have compact structure, small, power density high, be convenient for install characteristics such as maintain, electric good performance.
Description
Technical Field
The utility model relates to a high-voltage frequency conversion power unit in the power electronics field especially relates to power unit module among the high-voltage inverter.
Background
With the rapid development of modern power electronic technology, the development of power semiconductor technology is promoted. At present, a cascade voltage source high-voltage frequency conversion speed regulation technology is widely applied to medium and low power motors, and a power unit is used as a core component of a frequency conversion speed regulation system to determine the performance of a high-voltage frequency converter. The traditional power unit radiator is large in size and complex in installation, so that the power unit module is high in cost, small in power density and large in size.
Disclosure of Invention
In order to solve the above problem, the utility model provides a novel high-voltage frequency conversion power unit, its technical scheme is:
the radiator is fastened at the upper part of the sheet metal case, and fins of the radiator are surrounded by a bent sheet metal plate to form a closed air duct; the filtering energy storage capacitor and the control drive plate mounting plate are mounted in the metal plate case, the filtering energy storage capacitors are located at the lower part in the metal plate case, are arranged in a rectangular array and are fixed on the metal plate case through the capacitor mounting plate; the two rectifier bridge connecting rows are connected with the rectifier diode modules, and insulating paper is used between the rectifier bridge connecting rows to enhance the insulating property; the direct current bus bar is connected with the filtering energy storage capacitor in parallel, insulating paper is used at one end connected with the IGBT module, the control drive plate mounting plate is fixed on the metal plate case, and the control drive plate is fixed on the control drive plate mounting plate.
Furthermore, the sheet metal case is composed of a main case body, an L-shaped side plate and a straight side plate, wherein the L-shaped side plate and the straight side plate are respectively fixed on the main case body.
The utility model has the advantages that: the utility model relates to a novel high-voltage variable-frequency power unit, which comprises a radiator, a rectifier bridge connecting row, a filtering energy-storage capacitor and the like, wherein the radiator is fastened at the upper part of a sheet metal case, and fins of the radiator are surrounded by a bent sheet metal plate to form a closed air duct; the rectifier bridge connecting rows are connected with the rectifier diode modules, and insulating paper is used between the two rows to meet the insulating requirement; all the filtering energy-storage capacitors are connected in parallel with the direct current bus bars, and insulating paper is used at one end connected with the IGBT modules to meet the insulating requirement between the positive direct current bus bar and the negative direct current bus bar. The utility model discloses structural compactness and the electric replaceability have been considered simultaneously, have compact structure, small, power density high, be convenient for install characteristics such as maintain, electric good performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of FIG. 1;
as shown in the figure, the sheet metal chassis comprises a sheet metal chassis 1, a control drive plate mounting plate 2, a filtering energy storage capacitor 3, a direct current bus bar 4, insulating paper (5.1, 5.2), power devices (6.1, 6.2), a radiator 7, an output bar 8, a rectifier bridge connecting bar (9.1, 9.2), a capacitor mounting plate 10, a fast melting 11, a handle 12, an insulator 13, a control drive plate 14 and a cable 15.
Detailed Description
As shown in the figure, the utility model relates to a novel high-pressure frequency conversion power unit, this power unit module have compact structure, small, power density is high, be convenient for install and maintain.
The power unit comprises a sheet metal case 1, a control drive plate mounting plate 2, a filtering energy storage capacitor 3, a direct current bus bar 4, insulating paper (5.1 and 5.2), power devices (6.1 and 6.2), a radiator 7, an output bar 8, a rectifier bridge connecting bar (9.1 and 9.2), a capacitor mounting plate 10, a fast melting 11, a handle 12, an insulator 13, a control drive plate 14 and a cable 15. The sheet metal case is composed of a main case body, an L-shaped side plate and a straight side plate, the L-shaped side plate and the straight side plate are fixedly connected with the main case body respectively, an output row, a quick melting device, a cable and a handle are fixed on the outer surface of the main case body, and other components are installed inside the sheet metal case.
The radiator is fastened on the upper part of the sheet metal case, and the fins of the radiator are surrounded by the bent sheet metal plate to form a closed air duct. The filtering energy storage capacitor is arranged at the lower part in the sheet metal case in a rectangular array, and the bottom of the filtering energy storage capacitor is fixed on the sheet metal case through a capacitor mounting plate. The two rectifier bridge connecting rows are connected with the rectifier diode modules, and insulating paper is used between the rectifier bridge connecting rows to enhance the insulating property. All the filtering energy storage capacitors are connected in parallel to the direct current bus bar, and insulating paper is used at one end, connected with the IGBT module, of the direct current bus bar to improve the insulating property between the positive direct current bus bar and the negative direct current bus bar.
The utility model discloses a be applied to high-voltage inverter's power unit has solved the problem that power unit modular structure is complicated, power density is low, and structural compactness and electric replaceability have been considered simultaneously to frequency conversion power unit, have characteristics such as compact structure, electric functional well.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transformation that the content of the specification and the embodiment of the present invention do, or directly or indirectly use in other related technical fields, all including in the same way the patent protection scope of the present invention.
Claims (2)
1. A novel high-voltage variable-frequency power unit comprises a sheet metal case and is characterized in that an output row, a quick melting device, a cable and a handle are fixed on the front surface of the sheet metal case, a radiator is fastened on the upper part of the sheet metal case, and fins of the radiator are surrounded by a bent sheet metal plate to form a closed air duct; the filtering energy storage capacitor and the control drive plate mounting plate are mounted in the metal plate case, the filtering energy storage capacitors are located at the lower part in the metal plate case, are arranged in a rectangular array and are fixed on the metal plate case through the capacitor mounting plate; the two rectifier bridge connecting rows are connected with the rectifier diode modules, and insulating paper is used between the rectifier bridge connecting rows to enhance the insulating property; the direct current bus bar is connected with the filtering energy storage capacitor in parallel, insulating paper is used at one end connected with the IGBT module, the control drive plate mounting plate is fixed on the metal plate case, and the control drive plate is fixed on the control drive plate mounting plate.
2. The novel high-voltage variable-frequency power unit according to claim 1, wherein the sheet metal case is composed of a main case body, an L-shaped side plate and a straight side plate, and the L-shaped side plate and the straight side plate are respectively fixed on the main case body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123376029.4U CN217135354U (en) | 2021-12-30 | 2021-12-30 | Novel high-voltage variable-frequency power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123376029.4U CN217135354U (en) | 2021-12-30 | 2021-12-30 | Novel high-voltage variable-frequency power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217135354U true CN217135354U (en) | 2022-08-05 |
Family
ID=82620557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123376029.4U Active CN217135354U (en) | 2021-12-30 | 2021-12-30 | Novel high-voltage variable-frequency power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217135354U (en) |
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2021
- 2021-12-30 CN CN202123376029.4U patent/CN217135354U/en active Active
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