Low voltage pulse injection test of a single-stage 1 MV prototype induction voltage adder cell

Area of Science:

• Electrical Engineering
• Pulsed Power Systems

Background:

• Induction cells are critical components in pulsed power systems.
• Optimizing current uniformity is essential for efficient cell operation.

Purpose of the Study:

• To measure azimuthal uniformity of feed currents in a prototype induction cell.
• To evaluate cell electrical parameters under different feeding conditions.
• To investigate the impact of feed pulse timing and quantity on current uniformity and inductance.

Main Methods:

• Low voltage pulse injection tests were performed on a 1 MV prototype induction cell.
• Tests were conducted using single-point feed and synchronous/asynchronous two-pulse feeds.
• Azimuthal current variations and cell equivalent inductances were measured.

Main Results:

• Single-point feed achieved 19.3% azimuthal current variation.
• Synchronous two-pulse feed improved uniformity to 11.8% azimuthal variation.
• Asynchronous feed with <30 ns time deviation showed no significant degradation.
• Equivalent inductance remained stable (~130 nH) with <50% current variation.

Conclusions:

• Synchronous multi-pulse feeding enhances current uniformity in induction cells.
• Feed pulse timing and quantity significantly influence cell performance and inductance.
• The findings provide insights for optimizing induction cell design and operation.