CN209860832U - Four-process cutting machine frequency converter - Google Patents
Four-process cutting machine frequency converter Download PDFInfo
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- CN209860832U CN209860832U CN201920961210.5U CN201920961210U CN209860832U CN 209860832 U CN209860832 U CN 209860832U CN 201920961210 U CN201920961210 U CN 201920961210U CN 209860832 U CN209860832 U CN 209860832U
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- frequency converter
- cutting machine
- circuit
- electrically connected
- process cutting
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Abstract
The utility model provides a four processes open material machine converter, include: the first end of the rectifying circuit is electrically connected with a three-phase power supply, and the rectifying circuit is formed by connecting three groups of diodes in parallel; the first end of the pre-charging circuit is electrically connected with the second end of the rectifying circuit; and the first end of the inverter circuit is electrically connected with the second end of the pre-charging circuit, and the inverter circuit consists of a plurality of groups of converters. The utility model discloses a four processes are opened built-in four independent motor drive units of group of quick-witted converter, and zero second motor switching control can the opening of four processes of simultaneous control machine, saves 8 ac contactor, and the wiring reduces nearly 95%.
Description
Technical Field
The utility model relates to a converter technical field, in particular to four-process cutting machine converter.
Background
A large-scale frequency converter is provided with a plurality of circuit elements with large current and large heat productivity, if the arrangement among the circuit elements is not reasonable enough, serious mutual interference can be generated, and the reliability of the frequency converter is greatly reduced. At present, although some frequency converters on the market are provided with relatively reasonable circuit arrangement structures, other elements in the cabinet cavity are not reasonably arranged, so that the frequency converters have larger improvement space in the aspects of comprehensive installation cost, maintenance difficulty, reliability and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a four-process cutting machine converter, its purpose is in order to solve the multiple operation control of converter and the inside problem of arranging reasonable inadequately.
In order to achieve the above object, an embodiment of the utility model provides a four-process cutting machine converter, include:
the first end of the rectifying circuit is electrically connected with a three-phase power supply, and the rectifying circuit is formed by connecting three groups of diodes in parallel;
the first end of the pre-charging circuit is electrically connected with the second end of the rectifying circuit;
and the first end of the inverter circuit is electrically connected with the second end of the pre-charging circuit, and the inverter circuit consists of a plurality of groups of converters.
Each diode group of the rectification circuit consists of two diodes, and each pole of the three-phase power supply is connected with one diode group respectively and is connected between the two diodes of the diode group.
Each group of converters of the inverter circuit consists of six diodes, and each group of converters is respectively electrically connected with a direct current motor.
The pre-charging circuit comprises a switch and a resistor which are connected in parallel and electrically connected with a filter capacitor.
The frequency converter is electrically connected with a brake resistor, and the brake resistor is 50 omega.
The frequency converter is provided with four motor starting signal interfaces and a public end interface.
The frequency converter is provided with two analog signal input ends and an analog signal output end.
Wherein, be provided with a plurality of communication interface on the converter.
Wherein, be provided with a plurality of multi-functional instruction output contact on the converter.
The frequency converter is provided with a grounding impedance, and the grounding impedance is less than 4 omega.
The above technical scheme of the utility model has following beneficial effect:
the utility model discloses a four processes are opened built-in four independent motor drive units of group of quick-witted converter, and zero second motor switching control can the opening of four processes of simultaneous control machine, saves 8 ac contactor, and the wiring reduces nearly 95%.
Drawings
Fig. 1 is a schematic diagram of the circuit connection of the present invention.
[ description of reference ]
1-a rectifying circuit; 2-a precharge circuit; 3-inverter circuit.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The utility model discloses to the multiple operation control and the inside problem of arranging reasonable inadequately of current converter provides a four-process cutting machine converter.
As shown in fig. 1, the embodiment of the utility model provides a four-process cutting machine converter, include: the rectifier circuit 1 is electrically connected with a three-phase power supply at a first end of the rectifier circuit 1, and the rectifier circuit 1 is formed by connecting three groups of diodes in parallel; a pre-charging circuit 2, wherein a first end of the pre-charging circuit 2 is electrically connected with a second end of the rectifying circuit 1; and a first end of the inverter circuit 3 is electrically connected with a second end of the pre-charging circuit 2, and the inverter circuit 3 is composed of a plurality of groups of converters.
The utility model discloses an above-mentioned embodiment the control circuit of converter be through being transformed into the direct current with the alternating current, then be transformed into the alternating current with the direct current, in addition some steady voltage, the filtering, detection circuitry, protection circuit etc. embeds four independent motor drive units of group, zero second motor switching control, can control the material machine of opening of four processes simultaneously, saves 8 ac contactor, the wiring reduces nearly 95%.
Each group of diodes of the rectification circuit 1 is composed of two diodes, and each pole of the three-phase power supply is connected with one group of diodes respectively and is connected between the two diodes of the diode group.
The utility model discloses an above-mentioned embodiment rectifier circuit 1 constitute reversible converter with two sets of transistor converters, because its power direction is reversible, can carry out regeneration operation, change industrial frequency power supply into DC power supply.
Each converter of the inverter circuit 3 is composed of six diodes, and each converter is electrically connected to a dc motor.
The utility model discloses an above-mentioned embodiment inverter circuit 3 constitute by four group's converters, the converter comprises six diodes, is similar to the check valve that uses in the pipe-line system, allows the electric current to flow only in a direction, the direction that the arrow mark in the diode sign shows promptly, when every diode is opened and is closed, we can obtain six electric current "pulses", realize the function of converter.
The pre-charging circuit 2 comprises a switch and a resistor which are connected in parallel and electrically connected with a filter capacitor.
The utility model discloses an above-mentioned embodiment precharge circuit 2 use resistance to establish ties between rectifier circuit 1 and inverter circuit 3, go up the electric in the twinkling of an eye and charge filter capacitor through resistance, reduce the impact of heavy current to the circuit.
The frequency converter is electrically connected with a brake resistor, and the brake resistor is 50 omega.
The frequency converter is provided with four motor starting signal interfaces and a public end interface.
The frequency converter is provided with two analog signal input ends and an analog signal output end.
Wherein, be provided with a plurality of communication interface on the converter.
Wherein, be provided with a plurality of multi-functional instruction output contact on the converter.
The frequency converter is provided with a grounding impedance, and the grounding impedance is less than 4 omega.
The above-mentioned embodiment the four-process cutting machine converter built-in four independent motor drive unit of group, zero second motor switching control, the cutting machine that can four processes of simultaneous control, save 8 ac contactor, the wiring reduces nearly 95%, has solved the converter and has realized that multiple operation control and inside arrange reasonable problem inadequately.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a four processes are opened quick-witted converter of material, its characterized in that includes:
the first end of the rectifying circuit is electrically connected with a three-phase power supply, and the rectifying circuit is formed by connecting three groups of diodes in parallel;
the first end of the pre-charging circuit is electrically connected with the second end of the rectifying circuit;
and the first end of the inverter circuit is electrically connected with the second end of the pre-charging circuit, and the inverter circuit consists of a plurality of groups of converters.
2. The frequency converter of the four-process cutting machine according to claim 1, wherein each group of diodes of the rectification circuit is composed of two diodes, and each pole of the three-phase power supply is connected with one group of diodes respectively and is connected between two diodes of the diode group.
3. The frequency converter of four-process cutting machine according to claim 1, characterized in that each group of converters of the inverter circuit is composed of six diodes, and each group of converters is electrically connected with a direct current motor respectively.
4. The frequency converter of a four-process cutting machine as claimed in claim 1, wherein the pre-charging circuit comprises a switch and a resistor connected in parallel and electrically connected to a filter capacitor.
5. The frequency converter of a four-process cutting machine as claimed in claim 1, wherein the frequency converter is electrically connected with a braking resistor, and the braking resistor is 50 Ω.
6. The frequency converter of a four-process cutting machine as claimed in claim 1, wherein four motor start signal interfaces and a common terminal interface are provided on the frequency converter.
7. The frequency converter of a four-process cutting machine according to claim 1, wherein two analog signal input ends and one analog signal output end are arranged on the frequency converter.
8. The frequency converter of the four-process cutting machine according to claim 1, wherein a plurality of communication interfaces are arranged on the frequency converter.
9. The frequency converter of a four-process cutting machine as claimed in claim 1, wherein a plurality of multifunctional indicating output contacts are provided on the frequency converter.
10. The frequency converter of a four-process cutting machine as claimed in claim 1, wherein a grounding impedance is arranged on the frequency converter, and the grounding impedance is less than 4 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920961210.5U CN209860832U (en) | 2019-06-25 | 2019-06-25 | Four-process cutting machine frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920961210.5U CN209860832U (en) | 2019-06-25 | 2019-06-25 | Four-process cutting machine frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209860832U true CN209860832U (en) | 2019-12-27 |
Family
ID=68942645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920961210.5U Active CN209860832U (en) | 2019-06-25 | 2019-06-25 | Four-process cutting machine frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209860832U (en) |
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2019
- 2019-06-25 CN CN201920961210.5U patent/CN209860832U/en active Active
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