400A high frequency robot welding machine
Release time:
2023-05-24 14:32
PROJECT INTRODUCTION
This reference design solution is a high-frequency inverter robotwelding machine with a DSC microprocessor for full digital controland a rated current of 350 A. The main circuit uses a hard-switchfull-bridge topology based on SiC devices and APL self-developedSiC driver module was used to achieve active Mille clamp anddesaturation short-circuit protection, which improves the reliabilityof the system.
DESIGN SPECIFICATION
| Input Voltage | 380Vac |
| Output Current | 400A |
| Rated Power | 15KW |
| Switching frequency | 200KHz |
| System Efficiency | > 92% |
FEATURES
· Switching frequency up to 200 kHz, system efficiency up to 94%;
· Various CAN BUS, RS232/485 digital communication interfaces;
· Excellent dynamic response, excellent regulation of the welding arc;
· Small volume of the machine:
MAIN TOPOLOGY
MAIN DEVICES
| Function | Part Number | Brand |
| Sid Mos | C3M0065100K | Wolfspeed |
| Driver | APD202 | APL self-developed |
| Output Rectifier Diode | DSA3001200NA | IXYS |
MEASUREMENT RESULTS AND WAVEFORMS
RCD Load 3KVA
PF=0.5 逆變短路保護1s
Soft start @no load
Working waveform @full load
Working waveform @no load
Working waveform @50A output
Working waveform @200A output
Working waveform @400A output
Welding seam picture
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400A high frequency robot welding machine
2023-05-24
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