Circuit for detecting welding current and transfer arc current of plasma cutting machine
By setting up a single Hall current sensor in the load circuit of the plasma cutting machine, and using the wires of the conversion arc branch to pass through the sensor twice, the detection of the total output current and cutting current of the plasma cutting machine is solved, and the problem of high usage in the prior art is reduced, and the cost is improved and economic benefits are improved.
CN110899936BActive Publication Date: 2025-03-28SHANGHAI MIAODIG ELECTRIC CO LTD
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Patent Information
- Application Number
- CN202010042370.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-01-15
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2040-01-15
AI Technical Summary
Technical Problem
The existing technology for detecting welding current and transfer arc current of plasma cutting machines requires the use of two-way Hall current sensors, which leads to high cost of use and poor economic benefits.
Method used
A circuit is designed to detect the total output current and cutting current of the plasma cutting machine by setting a Hall current sensor in the load circuit and using the wires of the conversion arc branch to pass through the Hall current sensor twice.
Benefits of technology
This circuit uses a single Hall current sensor to detect both the total output current of the plasma cutting machine and the cutting current, reducing costs and not increasing control complexity, and has significant economic benefits.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention discloses a circuit for detecting welding current and transfer arc current of a plasma cutting machine, which is used for a plasma cutting machine using transfer arc cutting. The plasma cutting machine is connected to a power supply circuit, which converts the AC signal of an AC power supply into a frequency and rectifies it into a working voltage and frequency required by the plasma cutting machine, and comprises: a load circuit, which is connected to the power supply circuit; and a current sensor, which is arranged in the load circuit. The present invention can detect both the total output current of the plasma cutting machine and the cutting current through a Hall current sensor, and cleverly uses the Hall current sensor, which has a delicate structure and greatly reduces the cost; at the same time, the control method does not increase any complexity, and has significant economic benefits.
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