Using over-damped resistor-inductor-capacitor circuits to synthesize an adjustable high voltage rectangular pulse.

Area of Science:

• Electrical Engineering
• Materials Science

Background:

• High voltage pulse generation is crucial for material insulation testing.
• Existing methods often lack independent control over pulse parameters like rise time and flattop duration.

Purpose of the Study:

• To propose a novel method for synthesizing adjustable high voltage bipolar rectangular pulses.
• To enable independent control over the rise time and flattop duration of the generated pulses.
• To develop a pulse generation technique suitable for diverse insulation testing applications.

Main Methods:

• Utilized three over-damped resistor-inductor-capacitor (RLC) nonsynchronous discharge circuits.
• Employed artificial current zero technology for pulse synthesis.
• Designed and tested a prototype system.

Main Results:

• The prototype successfully generated adjustable unipolar rectangular pulses.
• Achieved an output amplitude of 17 kV.
• Demonstrated adjustable flattop durations ranging from 330 ns to 5.45 µs.
• Showcased adjustable rise times between 110 ns and 350 ns.

Conclusions:

• The proposed method effectively synthesizes adjustable high voltage rectangular pulses.
• Independent control of rise time and flattop duration was achieved.
• The generated waveform's insensitivity to sample variety makes it highly suitable for insulation testing.