A High-Voltage DC Power Supply with Extremely Low Ripple for Traveling Wave Tubes

This research delves into voltage fluctuations in high-voltage DC power supplies (HVDCPSs), employing a low-frequency rectifier structure for depressed collector traveling wave tubes (TWTs). It investigates the impact of HVDCPS output voltage ripple on depressed collector TWT performance. Excessive ripple can elevate undesired harmonics in the TWT output power spectrum, diminishing accuracy. Through simulations and tests, the study identifies ripple causes and proposes solutions, highlighting resonance between stray capacitance and leakage inductance during rectifier diode turn-off. It suggests placing a capacitor in the collector terminal to mitigate ripple, considering stored energy. The findings enhance HVDCPS design for depressed collector TWTs, offering insights to elevate TWT system performance and accuracy. By comprehending ripple causes and effects and proposing effective solutions, the study contributes to the overall enhancement of TWT system performance and accuracy.