A 120kW switch mode programmable power supply (SMPS) has been developed for 10 kW transverse flow CW CO2 laser. The power supply’s output current can be programmed for three different modes namely (i) Continuous mode (ii) Pulsed periodic mode (iii) Retriggerable single shot mode. Power supply has been developed on the basis of modular concept i.e. two numbers of 60 kW SMPS are connected in series to increase the output voltage. Each module delivers 1.5 kV and 40 Amps, therefore, the combined output rating is 3.0 kV and 40Amps. The SMPS has a modulation bandwidth of ~2.0kHz. The full load efficiency of 95% has been achieved.
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Block diagram of 120 kW SMPS |
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Operational waveforms during Pulse -periodic mode of operation at 500 Hz. |
120 kW Programmable SMPS |
