Comparison of Series Regulated Neutral Beam Accel Supplies with Shunt Regulated Accel Supplies.

摘要

This study was undertaken to get a direct comparison between comparable series and shunt regulated power supplies. It is intended that the two supplies will be strictly equivalent with the same safety factors in the design of each type and the cost estimates made on the same basis. The series regulated power supply is simply a scaled up version of the 2XIIB Accel Supplies. Each supply provides 150kV, 65ampere, 500ms pulse output such as will be used on the TFTR sources. The shunt regulated power supply uses high reactance transformers to provide the series impedance for the shunt regulator. The most significant difference in the performance of the two types of power supplies is that the shunt regulated supply has a minimum interrupt period of 16ms,whereas the series regulated supply can have about 0.5ms. Even this difference can be eliminated with a commutator circuit such as is being developed in Berkeley for the 150kV, 20ampere system. The 16ms period is probably not a very serious limitation because it still permits up to 31interrupts per 500ms pulse. The shunt regulated system appears to be about 37percent less expensive than the series system. (ERA citation 01:018336)