A new complete model of switch-mode plasma cutting power supply

摘要

A complete model of switch-mode plasma cutting power supply and its Simulation are developed. The full bridge isolated pulse width modulation (PWM) buck Converter in continuous conduction mode ( CCM) for high watt plasma power supply is approached. Reduced ripple current and improved power factor are achieved in the plasma power supply. With a PID control strategy, circuit responses become more stable and faster with low overshoot during load and current changing. The Converter achieved high efficiency under 3 to 15 kW load conditions.