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An inverter high-power fine plasma cutting power supply

An inverter power supply and high-power technology, applied in the power supply field, can solve problems such as unstable output current, and achieve the effect of ensuring cutting accuracy, improving quality and efficiency, and avoiding accuracy reduction.

Active Publication Date: 2018-09-18
CHENGDU HUAYUAN ELECTRIC EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to obtain an inverter type high-power fine plasma cutting power supply with stable output current. unstable problem

Method used

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  • An inverter high-power fine plasma cutting power supply
  • An inverter high-power fine plasma cutting power supply
  • An inverter high-power fine plasma cutting power supply

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Embodiment 1

[0023] Such as figure 1 as shown, figure 1 It is a structural block diagram of an inverter high-power fine plasma cutting power supply circuit provided by Embodiment 1 of the present invention.

[0024] In this embodiment, the inverter high-power fine plasma cutting power supply includes an inverter power supply and a control unit, and the inverter power supply includes a main inverter power supply and a secondary inverter power supply.

[0025] The main inverter power supply includes a main power primary rectification circuit, a main power inverter circuit and a main power secondary rectification circuit, and the external AC voltage is sequentially passed through the main power primary rectification circuit, the main power inverter circuit and the main power secondary rectification circuit output DC voltage. The voltage at the output terminal of the secondary rectification circuit of the main power supply is defined as U01, and the current at the output terminal of the seco...

Embodiment 2

[0032] In order to obtain a more powerful power supply, this embodiment adopts a parallel connection of one main inverter power supply and two auxiliary inverter power supplies. Such as Figure 6 as shown, Figure 6 It is a structural block diagram of an inverter high-power fine plasma cutting power supply circuit provided by Embodiment 2 of the present invention.

[0033]The difference between the second embodiment and the first embodiment is that the auxiliary inverter power supply includes a first auxiliary inverter power supply and a second auxiliary inverter power supply. Correspondingly, the auxiliary inverter PWM signal control module includes a first auxiliary inverter power supply The PWM signal control module and the second auxiliary inverter PWM signal control module, the synchronous controller controls the main inverter power supply, the first auxiliary inverter power supply and the second auxiliary inverter power supply to work synchronously, and the correspondin...

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Abstract

The invention discloses an inverter type high-power power supply for fine plasma cutting. The inverter type high-power power supply for fine plasma cutting comprises inverter power supplies and a control unit; the inverter power supplies comprise a main inverter power supply and N auxiliary inverter power supplies; the main inverter power supply and the N auxiliary inverter power supplies are connected in parallel; and the control unit controls synchronization of the main inverter power supply and the N auxiliary inverter power supplies, wherein N is a positive integer. According to the inverter type high-power power supply for fine plasma cutting, the main inverter power supply and the auxiliary inverter power supplies are controlled to work synchronously through a synchronous controller and are used in parallel, and therefore high-power output is realized and meanwhile stable currents can be further output, cutting precision of fine plasma cutting is ensured, the quality and the efficiency of fine plasma cutting are improved, and the problem that the fine plasma cutting precision is lowered due to output current oscillation is avoided.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to an inverter high-power fine plasma cutting power supply. Background technique [0002] Plasma cutting is a processing method that uses the heat of the high-temperature plasma arc to partially melt the metal at the incision of the workpiece, and discharges the molten metal by the momentum of the high-speed plasma to form a cut. Plasma cutting includes ordinary plasma cutting and fine plasma cutting. The precision of fine plasma cutting is higher than that of ordinary plasma cutting, which is close to the lower limit of laser cutting. The parts cut by it almost eliminate the cost of secondary processing, and the cost of fine plasma cutting is only laser cutting. One-third of that, or even lower, so fine plasma cutting has become the development direction of plasma cutting technology. The plasma cutting power supply is one of the core components of the plasma cutting system,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K10/00
CPCB23K10/00
Inventor 袁荣勤陶国利廖静
Owner CHENGDU HUAYUAN ELECTRIC EQUIP