Abstract
The paper describes non-isolated converters for plasma torches. A high frequency was used in order to drive the pulse width modulation circuit. The average output current consumption (AOCC) was modified from (1A) up to (2A). The (AOCC) was increased from (1A) up to (2A) by increasing the duty ratio from (0.75) up to (0.88). The switching frequency of the non-isolated inverter was fixed at (18KHz), The maximum output power was (220W), The maximum efficiency of the designed converter was (0.90).
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