Modeling and flow control method for high-speed compressor under variable height

• Main Authors: WANG XIPO, TAN BO, ZHAO DONGDONG, LI FEI, HUA ZHIGUANG, HUANGFU YIGENG
• Format: Patent
• Language: Chinese; English
• Published: 05.06.2018
• Subjects: BLASTING; HEATING; INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention relates to a modeling and flow control method for a high-speed compressor under a variable height. For the influence of changes of the working height of a high-speed centrifugal compressor for a fuel cell on a compressor model and the flow control, the modeling and flow control method for the high-speed centrifugal compressor under the variable height is provided. First an inlet airpressure and inlet air density model of the centrifugal compressor under the variable height is established, and static and dynamic models of the centrifugal compressor under variable height conditions are established. Based on the static and dynamic models of the compressor, the super-twisting sliding mode principle is adopted to perform smooth tracking control on the compressor flow. The modeling and flow control method has the advantages that in the modeling method for the centrifugal compressor under the variable height, the influence of height changes on the centrifugal compressor model is taken into account; thr