Multi-stage voltage droop compensation based on resonant circuit for unipolar solid-state Marx Generators

Area of Science:

• Electrical Engineering
• Pulsed Power Systems

Background:

• High-voltage pulses require stable electric fields, but suffer from voltage droop.
• Increasing capacitor size for stability increases system cost and bulk.
• Existing methods for voltage droop compensation are limited.

Purpose of the Study:

• To develop an effective and adjustable method for compensating voltage droop in high-voltage pulses.
• To integrate resonant compensation stages into a solid-state Marx generator.
• To achieve rectangular pulsed voltage with minimal droop.

Main Methods:

• Insertion of four resonant circuit-based compensation stages into a 16-stage solid-state Marx generator.
• Utilizing the linear portion of sinusoidal voltage for load compensation during discharge.
• Adjusting the number of compensation stages and resonant inductance for tunable compensation.
• Operating compensation stages as common stages by open-circuiting resonant elements.

Main Results:

• Achieved ideal compensation of voltage droop for a 9 kV pulse over a 500 Ω resistive load.
• Demonstrated adjustable droop compensation by varying compensation stages and inductance.
• Verified functionality through simulations and experiments.
• Confirmed that pulse width must be less than the linear segment of the sinusoidal voltage.

Conclusions:

• The proposed resonant compensation stages effectively minimize voltage droop in high-voltage pulses.
• The compensation is adjustable and does not require an auxiliary power supply.
• This method enables the realization of rectangular pulsed voltages with significantly reduced droop.