According to needs in engineering practice

for the value of smoothing reactor of current-source converter based on space vector modulation（SVM）

we provide a convenient and effective designing method.Realizing the modulation of three-phase current-source converter front and rear-stage power devices

analyzing direct current inductance voltage

according to fluctuation requirement of direct current

this paper provides the formula to select smoothing reactor.At last

inductance value through the formula is obtained and verified by simulation

and the result confirms the feasibility of the design method.