Title:
SIC INVERTED PLASMA CUTTING POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2018/107591
Kind Code:
A1
Abstract:
Provided is an SiC inverted plasma cutting power supply, comprising a main circuit and a closed-loop control circuit. The main circuit comprises a sequentially connected noise suppression module, a power-frequency rectification and filtering module, an SiC inverted commutation module, a power transformer, an SiC rectification and smoothing module and a non-contact arc striking module, wherein the noise suppression module is connected to an alternating-current input power supply, and the SiC rectification and smoothing module and the non-contact arc striking module are respectively connected to a load. The closed-loop control circuit comprises a man-machine interaction module, a DSC controller, a failure diagnosis and protection module, an SiC high-frequency drive module and a load electrical signal detection module. The power supply has a high cutting frequency, a light weight and high energy efficiency, and has an excellent dynamic characteristic, and can be applied on both a low-power occasion and a middle and high-power cutting occasion in a stable and reliable manner.
Inventors:
WANG ZHENMIN (CN)
ZHU LEI (CN)
FAN WENYAN (CN)
ZHU LEI (CN)
FAN WENYAN (CN)
Application Number:
PCT/CN2017/076416
Publication Date:
June 21, 2018
Filing Date:
March 13, 2017
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
B23K9/10
Domestic Patent References:
| WO2016073146A1 | 2016-05-12 |
Foreign References:
| CN106392262A | 2017-02-15 | |||
| CN205967754U | 2017-02-22 | |||
| CN101391336A | 2009-03-25 | |||
| CN201002169Y | 2008-01-09 |
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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