Abstract: In order to avoid the load impact on the power grid,the DC pulse generator sets are widely used in the fusion experimental equipment.However,the traditional open-loop excitation voltage control method can not solve the circulation problem when the generator sets operate in parallel.Aiming at this problem,based on the theoretical analysis of circulation suppression measures,this paper put forward a kind of armature current closed-loop feedback control of excitation power supply system,and starting from the engineering actual situation,expounded the DC side capacitor voltage pump up problems,and put forward the solution of natural continued flow capacitance bypass,eliminating the dead band time adverse impacts on the natural stream.The simulation and experiment prove the rationality of the design of the excitation power supply system.

Key words: DC pulse generator set, circulation suppression, closed loop feedback, excitation source, voltage pumping