Research on beam supply control strategy based on sliding mode control

摘要

In the hybrid multiple H-bridge topology of beam supply, the load change of aDC/DC full-bridge converter can greatly affect the output voltage during onsite operation.An improved sliding mode control (SMC) strategy is thus proposed in this paper, wherethe rate of switching control is added to the law of system equivalent control to createa law that can realize a complete sliding mode control. Considering the special operatingconditionsoftheloadcanhaveaninfluenceontheperformanceofthecontroller,theimpactofuncertaintyexistinginonsiteconditionsissuppressedwiththeproposedstrategyutilized.The validity of the proposed strategy, finally, is verified by simulation, which proves theoutperformance of the system in both robustness and dynamics.