ANTI-SURGE SPEED CONTROL OF A COMPRESSOR IN A VPSA APPARATUS
摘要
The present invention relates to a method and control system to control the speed of a centrifugal compressor operating within a vacuum pressure swing adsorption process to avoid an operation at which surge can occur and directly driven by an electric motor that is in turn controlled by a variable frequency drive. In accordance with present invention an optimal speed for operation of the compressor is determined at which the compressor will operate along a peak efficiency operating line of a compressor map thereof. This speed is adjusted by a feed back speed multiplier when the flow or other parameter referable to flow through the compressor is below a minimum and a feed forward multiplier during evacuation and evacuation with purge steps that multiplies the feed back multiplier to increase speed of the compressor and thereby avoid surge.
申请公布号
WO2013180919(A1)
申请公布日期
2013.12.05
申请号
WO2013US40129
申请日期
2013.05.08
申请人
PRAXAIR TECHNOLOGY, INC.
发明人
ROSINSKI, ANDREW, C.;BELANGER, PAUL, W.;MANNING, MICHAEL, S.